From: "Weatherhead" To: "aussieweather" Subject: aus-wx: STORMS: Storms head for SE Sydney Date: Tue, 26 Sep 2000 01:00:09 +1000 X-Mailer: Microsoft Outlook Express 5.00.2615.200 Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com

A very nice line has moved on from Canberra and is now heading for SE of Sydney. The line seems to be propogating NW so there is a chance the inner suburbs of Sydney might get a rumble or too. The storms are very electrically active and it has given us a chance to use the experimental products.

http://ows.bom.gov.au/products/reg/wwrp/wwrp_anal_intro.html

name and password : olympic

Daniel Weatherhead
weatherhead at ozemail.com.au

============================
SYDNEY STORM CHASERS
http://www.sydneystormchasers.com
============================

Date: Tue, 26 Sep 2000 01:19:40 +1000 From: Andrew Miskelly X-Mailer: Mozilla 4.72 [en] (Win98; I) X-Accept-Language: en To: Aussie Weather Subject: aus-wx: STORM: Wollongong Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hi all, The stroms that Patrick reported earlier on have made it to Wollongong (0100 EST). The storms seem similar to what was reported in Canberra - lots of long, deep rumbles of thunder. A cell passed over West Wollongong giving me a great view of it - most of the lightning looked to be CCs. This brings the question to mind, are long deep rolls of thunder ofetn associated with CC lightning and if so, why?? The line could well get through Sydeny yet - hopefully it will intensify as it often does after passing the 'storm unfriendly' Wollongong!! Andrew. -- Andrew Miskelly Illawarra/Southern Tablelands, NSW amiskelly at ozemail.com.au +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ Date: Tue, 26 Sep 2000 01:35:31 +1000 From: David Carroll X-Mailer: Mozilla 4.74 [en] (Win98; U) X-Accept-Language: en To: Aussie Weather Subject: aus-wx: Lightning Show - Bathurst Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com 1.32am, 26/09 Huge lightning show in Bathurst right now, looking South over Mt Panorama and Oberon way. Thunder rolling nice and heavy.. Looks like some nice CG's at Mt Panorama, Im waiting now for the blackout that always seems to happen at Mt Panoram and South Bathurst Areas. Lightning getting a little close to my house now, with the last flash lit up my loungeroom followed by thunder 2 sec later.. Will keep updated.. Dave Bathurst ph 0408863956 or 63321196. +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ Date: Mon, 25 Sep 2000 10:54:51 -0400 From: "Leslie R. Lemon" Subject: aus-wx: Condensation funnels et al... To: "INTERNET:aussie-weather at world.std.com" X-MIME-Autoconverted: from quoted-printable to 8bit by europe.std.com id KAA04762 Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Kevin from Wycheproof wrote: > Just one question left: Do all tornadoes have condensation funnels? In short, no. "Gustnadoes" do not. But they are usually very weak. However, even very strong supercellular tornadoes will not have continuous condensation funnels. Sometimes they will be fragmented, other times only the "suction vortices" of a multivortex tornado will have condensation funnels. However, even then these funnels are fragmented. In fact, during the lifetime of many tornadoes the funnel is in part transient, changing continuously. Another point to keep in mind is that the vortex must first be established at the surface and then as the vortex intensifies, the funnel is seen to descend owing to the falling pressure within the vortex. The vortex lines must end at the earth's surface. Recently we have learned that the RFD in the vicinity of the tornado must be rather warm and buoyant in order to sustain the vortex. At times, I believe, some of the air descending in the RFD will have a drier character which will contribute to diminishing condensation in the vortex. One other point, there seems to be some confusion, interchanging "condensation" for "coalescence". Coalescence is a precipitation process and not a condensation process. Coalescence is the process where precipitation droplets collide and combine making a larger droplet. In other words, they coalesce. Condensation is the formation of visible cloud. Condensation is the important process we are talking about relative to the funnel cloud of tornadic vortices. Condensation is the process that make wingtip vortices visible in airborne aircraft and it is condensation that develop, at times, above the wing surface of jet aircraft. In all these cases the air through which the aircraft is flying is relatively close to saturation and the pressure drop causes sufficient cooling of the air to produce condensation. Note the key to all this, whether we are discussing tornadic vortices or aircraft associated condensation is the cooling of the air undergoing the pressure drop. The cooling causes the air to become saturated relative to water vapor. In other words the relative humidity rises as the air cools until it is saturated. Beyond saturation condensation must occur as the air continues to cool. The air is unable to carry, in vapor form, the water substance that it was carrying before. Les ************************ Leslie R. Lemon Radar, Severe Storms, & Research Meteorologist Tel. 816-373-3533, 816-213-3237 E-Mail: lrlemon at compuserve.com +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ Date: Tue, 26 Sep 2000 02:11:59 +1000 From: David Carroll X-Mailer: Mozilla 4.74 [en] (Win98; U) X-Accept-Language: en To: Aussie Weather , Weatherhead Subject: aus-wx: storms - Central Tablelands. Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com IDW16N00 TOP PRIORITY FOR IMMEDIATE BROADCAST SEVERE THUNDERSTORM ADVICE BUREAU OF METEOROLOGY NEW SOUTH WALES REGIONAL OFFICE Issued at 0110 on Tuesday the 26th of September 2000 This advice affects people in the following weather districts: Central Tablelands Thunderstorms are forecast within the advice area from now to 0400am. Some of these are expected to be severe bringing large hailstones, destructive winds and very heavy rainfall. A line of thunderstorms extends from Parkes to Oberon and is moving towards the east to northeast at about 60 km/h. The STATE EMERGENCY SERVICE advises that as storms approach people should: * put vehicles under cover * move indoors away from windows During and after the storm people should: * beware of fallen trees and power lines * keep away from creeks and drains as you may be swept away * shelter in the strongest part of a building [eg. bathroom or basement] The RTA recommends motorists switch their lights & wipers on & slow down in the wet. If your house is damaged contact your local SES unit, listed under "S" in the white pages, for emergency assistance. Don't use the telephone during storms. TV CRAWL: Severe Thunderstorm Advice current for the Central Tablelands NOT FOR BROADCAST: This Advice message is valid until 0400am. The Bureau and SES would appreciate it being broadcast regularly until this time. +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ X-Authentication-Warning: new-smtp1.ihug.com.au: Host p10-max41.syd.ihug.com.au [216.132.22.202] claimed to be storm.ihug.com.au X-Sender: jdeguara at pop.ihug.com.au X-Mailer: QUALCOMM Windows Eudora Version 5.0 Date: Tue, 26 Sep 2000 03:22:56 +1000 To: aussie-weather at world.std.com From: Jimmy Deguara Subject: Re: aus-wx: storms - Central Tablelands and now Schofields. Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hi all, I had come back home last night from Michael Bath's. I wasn't really tired but slept like a log. But - what is this?? It is 3:04am and I am awakened by big - rolling marbles in the sky? Yes these deep booms of thunder as the storms pass through. Finally. Storms from the WSW on radar and as David Carroll indicated, there was a warning put out!!!!! Jimmy Deguara At 02:11 AM 26/09/00 +1000, you wrote: >IDW16N00 > >TOP PRIORITY FOR IMMEDIATE BROADCAST > >SEVERE THUNDERSTORM ADVICE >BUREAU OF METEOROLOGY >NEW SOUTH WALES REGIONAL OFFICE >Issued at 0110 on Tuesday the 26th of September 2000 > >This advice affects people in the following weather districts: > >Central Tablelands > >Thunderstorms are forecast within the advice area from now to 0400am. >Some >of these are expected to be severe bringing large hailstones, >destructive >winds and very heavy rainfall. > >A line of thunderstorms extends from Parkes to Oberon and is moving >towards >the east to northeast at about 60 km/h. > >The STATE EMERGENCY SERVICE advises that as storms approach people >should: > * put vehicles under cover > * move indoors away from windows > >During and after the storm people should: > * beware of fallen trees and power lines > * keep away from creeks and drains as you may be swept away > * shelter in the strongest part of a building [eg. bathroom or >basement] > >The RTA recommends motorists switch their lights & wipers on & slow down >in >the wet. > >If your house is damaged contact your local SES unit, listed under "S" >in >the white pages, for emergency assistance. Don't use the telephone >during >storms. > >TV CRAWL: Severe Thunderstorm Advice current for the Central Tablelands > >NOT FOR BROADCAST: This Advice message is valid until 0400am. The Bureau >and SES would appreciate it being broadcast regularly until this time. > +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com > with "unsubscribe aussie-weather your_email_address" in the body of your > message. > -----------------------jacob at iinet.net.au------------------------------ ----------------------------------------- Jimmy Deguara Storm Chaser and Mathematics Teacher from Schofields, Sydney NSW Australia e-mail:jdeguara at ihug.com.au Web Page with Michael Bath Australian Severe Weather Home Page http://www.australiasevereweather.com President of the Australian Severe Weather Association http://www.severeweather.asn.au +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ From: Harald Richter Subject: aus-wx: Cumulonimbus tops HOW HIGH! To: aussie-weather at world.std.com (Australian Severe Weather Association) Date: Mon, 25 Sep 2000 12:33:53 -0500 (CDT) X-Mailer: ELM [version 2.5 PL3] Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Cb lovers, Clyve typed: > ...Although there can be a = > comparison with CB tops maximum and the extent of severe condition that = > might be generated, this can at times not be the case I.E. the Sunbury = > tornado developed from a supercell with tops just reaching 30.000ft, = > however the Sandon tornado developed from a supercell with tops measured = > at 61.000ft! ..... > ... Cat 6 storm tops 65.000ft and above (mega supercell ! ) One note of caution. The deep tropics can produce very deep storms (60,000 ft +) without much rotation, i.e. these storms are not supercells. When I hear "supercell" it translates primarily into "a rotating storm" regardless of its cloud top height. *Generally* warm-season supercells have high cloud tops, though. Storm height estimates: If the storm occurs near a sounding location around a sounding time (00 or 12 UTC for standard launches) you might be able to visually correlate inversion layers in the sounding with preferred horizontal development when visually observing the storm. I would expect the main storm anvil to spread out along or above the tropopause level in the sounding. A more accurate way of storm height estimation could be a measurement of the elevation angle "a" between the ground (if horizontal) and the visual cloud top. Use high-tilt radar reflectivity to locate the storm reflectivity core at the time of the elevation angle measurement. This way you can compute your distance "d" to the storm reflectivity core aloft. Pythagoras then yields the storm height (above ground level) as h = d*tan(a). > ... rotation has been observed for more than 50 minutes = As Les remarked, 50 minutes of [continuous] rotation is quite demanding. A recent supercell in Xenia (Ohio) showed rotation for only 10-12 minutes (2 volume scans) whilst dragging a strong to violent tornado along the turf below it. WEATHER: The 16Z surface obs show moist and saturated air (T ~ Td ~ 13 C) over much of SA. Plenty of deep moist convection is visIble over central SA - looks like an MCS (Mesoscale Convective System) to me. The Woomera 12Z sounding shows a moist adiabatic profile through most of the troposphere above 700 hPa. The Adelaide 12Z sounding ahead of this system has an Li of -3 (for what that it's worth) with 0-6 km shear that could be a lot worse than it is. The main surface baroclinic zone is a few hundred kilometres N of Adelaide and might be the focal line for development. Ironically the 06Z AVN run has zero CAPE for the region at 15Z and 18Z despite all the deep convection actually occuring at 1630 Z... Cheers, Harald -- ------------------------------------------- Harald Richter NOAA/National Severe Storms Laboratory 1313 Halley Circle Norman, OK 73069, U.S.A. ph.: (405) 366-0430 fax: (405) 579-0808 email: hrichter at enterprise.nssl.noaa.gov web: http://www.nssl.noaa.gov/~hrichter ------------------------------------------- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ X-Originating-IP: [216.132.22.34] From: "Hector Pascal" To: aussie-weather at world.std.com Subject: Re: aus-wx: Sharp upper level trough moving east! Date: Mon, 25 Sep 2000 17:58:35 EST X-OriginalArrivalTime: 25 Sep 2000 07:58:35.0874 (UTC) FILETIME=[6820E420:01C026C6] Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com >From what I have seen, it must have been somewhere between Eucla and Esperance this morning, judging from upper level winds. The models I have seen show it weakening as it moves east but there still could be some good storms about since the upper temps are still pretty chilly. - Hector. > >The upper trough I mentioned in my last e-mail that was over WA, has now >been mentioned in the South Austrailain weather notes issued by BOM and is >forecast to move eastward across SA during the day tomorrow(Tuesday). I >was >wondering does anyone know how sharp this upper level trough is? To me it >sounds like this trough combined with the lingering surface trough could >cause some interesting storm activity that could possibly become severe in >SA, VIC and NSW. Does anyone know what is the exact location of this >trough, I am wondering if it is connected with the small patch of cloud >just >south of the Bight at the moment or the back of the trough cloud in the >mainland?. Adelaide's weather tomorrow morning could be interesting for >once, (for a storm), seeing as the forecast predicts thundery showers. I >won't hold my breath though, the forecasts have been being changed left >right and center for the last 5 days. _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com. +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ X-Originating-IP: [206.17.107.43] From: "Hector Pascal" To: aussie-weather at world.std.com Subject: aus-wx: Chance of a Late Thursday??? Date: Tue, 26 Sep 2000 04:12:28 EST X-OriginalArrivalTime: 25 Sep 2000 18:12:28.0698 (UTC) FILETIME=[2A33CFA0:01C0271C] Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Looks like the BoM staff will be having a late Thursday judging from their Olympic forecast for Sydney: "The rain will clear on Wednesday and it should be warmer. On Thursday there is a chance of a lateThursday and Friday should be dry, though partly cloudy. " Judging from this, it looks like they'll be having a late Tuesday also! - Hector _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com. +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ Date: Mon, 25 Sep 2000 14:45:30 -0400 From: "Leslie R. Lemon" Subject: aus-wx: Cumulonimbus tops HOW HIGH! To: "INTERNET:aussie-weather at world.std.com" X-MIME-Autoconverted: from quoted-printable to 8bit by europe.std.com id OAA20317 Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Harald wrote in a very good post, as always: > A more accurate way of storm height estimation could be a measurement > of the elevation angle "a" between the ground (if horizontal) and the > visual cloud top. Use high-tilt radar reflectivity to locate the > storm reflectivity core at the time of the elevation angle measurement. > This way you can compute your distance "d" to the storm reflectivity core aloft. > Pythagoras then yields the storm height (above ground level) > as h = d*tan(a). This was done by the "Stormy Weather Group" of McGill University during the 60's. They did this to combine visual and radar observations. This is something that needs to be done to a much greater extent. In most of my studies, from my first in the late 60's, I have attempted to do this but has not been done to any significant extent. I believe we are approaching the time when we will be able to do this to a far greater extent with the advent of the digital camera. Are there any on this list who are willing to attempt this? I challenge you to do so. Les ************************ Leslie R. Lemon Radar, Severe Storms, & Research Meteorologist Tel. 816-373-3533, 816-213-3237 E-Mail: lrlemon at compuserve.com +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ X-Originating-IP: [206.17.107.43] From: "Hector Pascal" To: aussie-weather at world.std.com Subject: aus-wx: Rain is Wet...Really??? Date: Tue, 26 Sep 2000 04:53:12 EST X-OriginalArrivalTime: 25 Sep 2000 18:53:12.0424 (UTC) FILETIME=[DAC6CE80:01C02721] Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com According to the BoM's Olympic forecast, when it rains, it means it will be wet!! "The rain will produce some wet conditions tomorrow..." - Hector _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com. +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ From: David Jones To: "Aussie Weather Digest (E-mail)" Subject: aus-wx: Sydney forecast. Date: Tue, 26 Sep 2000 08:28:51 +1000 X-Mailer: Internet Mail Service (5.5.2650.21) Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com >Hi Everyone >i am very confused at the moment. I am at an absolute loss as to why the >BoM in there forecast for Monday in Sydney, have SE winds, and the >chance of a shower ! (Olympic forecast says coastal) Matt, I can think of a few reasons, which may have factored in the forecast, 1) The meso-laps was suggesting a quite well developed topographically induced ridge/trough structure near Sydney - trough in lee of ranges, ridge o windward side. This suggested a distortion of the more general synoptic flow around Sydney - ie more easterly and less northerly. 2) Local knowledge correcting for known biases in the models. All the models have biases under certain circumstances. To name a few, ECMWF and UK models both have shown tendencies to over intensify developing cyclones, GASP for a long time had a tendency to shift the east coast ridge in Queensland too far inland, LAPS tends to have thicknesses a little lower than reality. The forecasters in NSW would be well aware of the model deficiencies and may have been compensating for some of these in the forecast. 3) Surface friction, which means the surface flow is typically 10-30% cross-isobaric. 4) The isallobaric flow. The models suggested quite rapid pressure falls of ~6hPa centred on eastern NSW with rises of about 10hPa in the central Tasman in 24 hours, which would give rise to cross isobaric easterlies. BTW clocked up our first 20mm (22.9mm) fall in Box Hill (eastern suburbs of Melbourne) since late February. There have been many 10-19mm falls in this time, but not one managing to crack 20mm - one could say pathetic! Cheers, David. Dr David Jones Climate Analysis Section National Climate Centre Bureau of Meteorology Fax : (+61 3) 9669 4678 GPO Box 1289K, Melbourne Ph (work): (+61 3) 9669 4861 Victoria 3001, Australia Ph (home): (+61 3) 9898 4425 email : D.Jones at bom.gov.au +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ X-Mailer: Microsoft Outlook Express Macintosh Edition - 4.5 (0410) Date: Tue, 26 Sep 2000 09:02:22 +1100 Subject: Re: aus-wx: Chance of a Late Thursday??? From: "twc at theweather.com.au" To: aussie-weather at world.std.com Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Great to see we finally have a 1st class sharp witted cynic on the list. :) _____________________________________________________ Mark Hardy. http://www.theweather.com.au _____________________________________________________ ---------- >From: "Hector Pascal" >To: aussie-weather at world.std.com >Subject: aus-wx: Chance of a Late Thursday??? >Date: Tue, 26 Sep 2000 20:12 > > Looks like the BoM staff will be having a late Thursday judging from their > Olympic forecast for Sydney: > "The rain will clear on Wednesday and it should be warmer. On Thursday there > is a chance of a lateThursday and Friday should be dry, though partly > cloudy. " > Judging from this, it looks like they'll be having a late Tuesday also! > - Hector > _________________________________________________________________________ > Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. > > Share information about yourself, create your own public profile at > http://profiles.msn.com. > > +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com > with "unsubscribe aussie-weather your_email_address" in the body of your > message. > -----------------------jacob at iinet.net.au------------------------------ > +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ From: David_Cornford at ansett.com.au X-Lotus-FromDomain: ANSETT To: aussie-weather-digest at world.std.com Date: Tue, 26 Sep 2000 09:23:14 +1000 Subject: aus-wx: Re: aussie-weather-digest V1 #749 Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Update on rain in Melbourne from Balwyn in the inner east - 24.6mm in my gauge 24 hours to 8am this morning, having had 7.4 mm for the previous 24 hours. Michael T and Andrew M - great to read your posts from Illawarra - I am a Wombarra boy, having left there in 1985 after 19 years to go to uni in Canberra. I used to keep a gauge there for a few years and provide rainfall figures to Win 4. Our family has personal experience of the effects of the phenomenal falls that part of the world can get - my parents' place has been struck twice in the last 10 years, losing their car on each occasion amongst other innumerable effects, when high intensity stationary falls occurred, the runoff dammed by earthworks from the past railway electrification, and collapsing the railway embankment behind their place. On a lighter side, one particular memory is the storm that broke the 1983 drought which dumped 113 mm in my gauge in around two hours, sending the contents of our vegie garden down the creek and out into the street, sailing down the road. Best regards DVC _____________________________________________________________________ CAUTION - This message may contain privileged and confidential information intended only for the use of the addressee named above. If you are not the intended recipient of this message you are hereby notified that any use, dissemination, distribution or reproduction of this message is prohibited. If you have received this message in error please notify Ansett Australia immediately. Any views expressed in this message are those of the individual sender and may not necessarily reflect the views of Ansett Australia. ABN Ansett Australia Ltd 37 004 209 410 ABN Ansett International Ltd 72 060 622 460 _____________________________________________________________________ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ X-Originating-IP: [203.54.87.223] From: "S G" To: aussie-weather at world.std.com Subject: aus-wx: Interesting area of cloud Date: Tue, 26 Sep 2000 09:11:29 CST X-OriginalArrivalTime: 25 Sep 2000 23:41:29.0412 (UTC) FILETIME=[2095B840:01C0274A] Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Well there has been no t'storm activity in Adelaide, it has been very pathetic. I am still holding out hope for a possible rumble of thunder today but the chances of that don't look too great. Not sure about this, there is an area of cloud just near Pt Lincoln, it looks a little bit active on the radar, some flashes of pink. I am wondering if this could by any chance be a thunderstorm. Heading fairly slowly east - south east. Could be associated with the upper level trough or just the wind change associated with the pathetic lingering surface trough, which is becoming very annoying for its lack of weather in central SA. Would liike to here from t'storm chasers etc to whether they think this could be a t'storm. More likely it is just a shower I suppose. _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com. +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ X-Sender: mbath at pop.ozemail.com.au X-Mailer: QUALCOMM Windows Eudora Version 5.0 Date: Tue, 26 Sep 2000 10:58:45 +1000 To: aussie-weather at world.std.com From: Michael Bath Subject: aus-wx: CHASE - Hunter & conditions Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Jimmy, David Croan and Paul Graham are heading up to the Hunter Valley for a chase. Jimmy's mobile is 0408 020 468. 18z AVN data has LI's of -4 to -6 in the upper Hunter and further west, along with CAPE around 1400, though upper winds are light. Here in the NE NSW we have LI of -4 to -6 for this afternoon and a CAPE around 1000 forecast. Winds are more favourable with 60knot WNW winds at 300hPa at my location (28.5S, 153E). Currently sunny here with light N winds. regards, Michael ============================================================= Michael Bath mailto:mbath at ozemail.com.au McLeans Ridges http://australiasevereweather.com/ NE NSW Australia http://www.lightningphotography.com/ ASWA Secretary http://www.severeweather.asn.au/ ============================================================= +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ From: "clyve herbert" To: Subject: aus-wx: Confused barometer tappers. Date: Tue, 26 Sep 2000 12:24:40 +1000 X-Mailer: Microsoft Outlook Express 5.00.2615.200 Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com

Hi all.

Got a phone call from a friend yesterday, (Monday 25.09.2000)complaining about his misbehaving barometer.He noticed that the reading showed "very dry", but outside rain was falling, infact it had been raining continuously for almost 12 hours.(its still raining as I type this story Tuesday 26.09.2000.) Infact there must have been some rather confused barometer tappers across Victoria yesterday morning ,especially in southern Victoria where surface pressure was around 1025hpa!.... The culprit was a strengthening high over Victoria on Sunday and a developing "cut off low" over south Australia, favourable upper winds were dragging large areas of mid and high cloud from the developing system west of Adelaide across Victoria, so by Monday a large mid and upper level rainband was dissecting the high and producing an uncommon rain within the high pressure situation. This development shows how important actual visual observations are needed to confirm expected weather conditions and this combined with instrumental either mechanical (barometers etc) or electronic (computer models) are important and not the total reliance on indications and predictions offered by instrumentation. In regards to barometers some of the first to be constructed were by Torricelli between 1641 and 1644,however there were some very adventurous barometer builders which included a huge water barometer constructed by Otto van Gueriche in 1654, this instrument measured 36 ft high and was filled with water, he floated a wooden model of a man at the top(he also made wooden models of women with umbrellas!) . The idea was of course when atmospheric pressure fell the wooden man would pop out of the top, and in the case of a model women she would appear with the brolly raised, as pressure increased they would disappear The predictions of the bobbing wooden models were rather accurate and rain followed on most occasions..sounds ok so far, infact what van Gueriche failed to predict was the reaction of the locals who eventually came to the conclusion this was all the work of the devil and threatened to hang their local mayor up to the nearest tree...He rather rapidly dismantled the device..... regards Clyve Herbert.

From: "John Woodbridge" To: Subject: RE: aus-wx: Confused barometer tappers. Date: Tue, 26 Sep 2000 11:47:59 +1000 X-Mailer: Microsoft Outlook CWS, Build 9.0.2416 (9.0.2911.0) Importance: Normal Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hi all, Depending upon location, the correlation between low pressure and rain is not always particularly relevant. Much of our coastal rain in SE QLD occurs with stengthening SE's under increasing pressure as a ridge builds. Drops in pressure associated with passage of winter time lows to the South, typically result in very dry westerly scenarios. But the opposite would be true for Perth, for instance. For us, humidity changes are a better indication of rain prospects. I have often wondered if some device could be built, which uses both humidity & pressure and which can be switched between an East Coast/West Coast regime, to indicate prospects of rain. Regards, John. >snip Subject: aus-wx: Confused barometr tappers. Hi all. Got a phone call from a friend yesterday, (Monday 25.09.2000)complaining about his misbehaving barometer.He noticed that the reading showed "very dry", but outside rain was falling, infact it had been raining continuously for almost 12 hours.(its still raining as I type this story Tuesday 26.09.2000.) Infact there must have been some rather confused barometer tappers across Victoria yesterday morning ,especially in southern Victoria where surface pressure was around 1025hpa!.... The culprit was a strengthening high over Victoria on Sunday and a developing "cut off low" over south Australia, favourable upper winds were dragging large areas of mid and high cloud from the developing system west of Adelaide across Victoria, so by Monday a large mid and upper level rainband was dissecting the high and producing an uncommon rain within the high pressure situation. This development shows how important actual visual observations are needed to confirm expected weather conditions and this combined with instrumental either mechanical (barometers etc) or electronic (computer models) are important and not the total reliance on indications and predictions offered by instrumentation. In regards to barometers some of the first to be constructed were by Torricelli between 1641 and 1644,however there were some very adventurous barometer builders which included a huge water barometer constructed by Otto van Gueriche in 1654, this instrument measured 36 ft high and was filled with water, he floated a wooden model of a man at the top(he also made wooden models of women with umbrellas!) . The idea was of course when atmospheric pressure fell the wooden man would pop out of the top, and in the case of a model women she would appear with the brolly raised, as pressure increased they would disappear The predictions of the bobbing wooden models were rather accurate and rain followed on most occasions..sounds ok so far, infact what van Gueriche failed to predict was the reaction of the locals who eventually came to the conclusion this was all the work of the devil and threatened to hang their local mayor up to the nearest tree...He rather rapidly dismantled the device..... regards Clyve Herbert. +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ From: "Godsman, Andrew AG" To: "'aussie-weather at world.std.com'" Subject: aus-wx: Weather - Illawarra Rain Date: Tue, 26 Sep 2000 13:33:30 +1100 X-Mailer: Internet Mail Service (5.5.2652.78) Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Wollongong 1:30pm AESDT Finally, we've had around 4 hours of good steady rain, starting with some very heavy falls, and settling back to lite stuff of around 1-2mm/hr for the past 3 hours. The first time we've had a good soaking of rain for a couple of months, at least. Can't believe I missed all that thunder last night. Slept straight through despite the storm reportedly being directly overhead. Everyone has been asking me all day if I got any photos. Oh well, hopefully next time The Cloud visits during a more civilised hour. Andrew Godsman EOM NOTICE - This message contains information intended only for the use of the addressee named above. It may also be confidential and/or privileged. If you are not the intended recipient of this message you are hereby notified that you must not disseminate, copy or take any action in reliance on it. If you have received this message in error please notify postmaster at bhp.com. +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ From: davidkc at advanceenergy.com.au Subject: aus-wx: storms- Bathurst To: aussie-weather at world.std.com Date: Tue, 26 Sep 2000 13:54:48 +1100 X-MIMETrack: Serialize by Router on Domino/Advance(Release 5.0.4 |June 8, 2000) at 26/09/2000 01:54:53 Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com HI . 1.43pm 26/09 Bathurst area - Perthville/Georges Plains has received several lightning strikes to poles in this area. NO power for parts of Sth Bathurst. Areas around Cowra also without power. Radar showing storm moving east towards Sydney. Dave +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ From: "clyve herbert" To: Subject: aus-wx: Tilting cloud band south east Australia. Date: Tue, 26 Sep 2000 14:12:20 +1000 X-Mailer: Microsoft Outlook Express 5.00.2615.200 Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com

Hi all.

Nice cloud band across south east Australia at 1400hrs (26.09.00), worth keeping a close look as it appears to be tilting and becoming longitunal. Interesting features are the very thundery nature of the cloud band northwest from Mildura into eastern South Australia. Upper flow patterns are faster north west of Mildura than over western Victoria this set up may point to vorticity somewhere around Bordertown, so keep a lookout for a possible centre of low pressure developing in northwest Victoria this afternoon.

regards Clyve Herbert.

Date: Tue, 26 Sep 2000 13:30:52 +1000 From: Anthony Cornelius X-Mailer: Mozilla 4.72 [en] (Win98; I) X-Accept-Language: en To: aussie-weather at world.std.com Subject: Are AU supercells different to US supercells? was Re: aus-wx: Cumulonimbus tops HOW HIGH! Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hi all, Sir Harald Richter wrote: > > As Les remarked, 50 minutes of [continuous] rotation is quite > demanding. A recent supercell in Xenia (Ohio) showed rotation > for only 10-12 minutes (2 volume scans) whilst dragging a > strong to violent tornado along the turf below it. This is interesting - as the Australian (or BoM) definition of a supercell states that a mesocyclone must be present for a minimum of twenty minutes, for at least 1/3 of the thunderstorms height. It also states a speed for rotation, which I can never remember, and am comfortably perched on my chair to go and look it up :) Is the US definition of a supercell "simply" the presence of a rotating updraft? -- Anthony Cornelius Queensland Coordinator of the Australian Severe Weather Association (ASWA) (07) 3390 4812 14 Kinsella St Belmont, Brisbane QLD, 4153 Please report severe thunderstorms on our Queensland severe thunderstorm reporting line on (07) 3390 4218 or by going to our homepage at http://www.severeweather.asn.au +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ From: "Martin Davey" To: Subject: aus-wx: Adelaide wins back reputation as the place to miss out on rain Date: Tue, 26 Sep 2000 13:45:54 +0930 X-Mailer: Microsoft Outlook Express 5.00.2919.6700 Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hi SG, Don't hold your breath waiting for thunderstorms or rain out of this system for Adelaide. It has gone and it has dumped 0.2mm of rain in the city! After a fairly good year in Adelaide with good Autumn rains and average Winter rains and not many " misses " and a good start to this month, Adelaide has fallen back into it's bad habits of missing out. This latest miss more than makes up for the lack of misses earlier in the year. While Adelaide approaches it's 3rd week with virtually no rainfall places in the lower SE have had nearly 50mm in the last 24hrs eg Coonawarra 49mm and Robe 44mm. This rainfall has also been widespread in southern Victoria. The outlook is a shocker with the so called " stronger " cool change on Friday bringing a morning shower or two and apart from that just continuing fine weather. Martin +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ From: "John Woodbridge" To: Subject: RE: aus-wx: ASWA site down? Date: Tue, 26 Sep 2000 15:08:21 +1000 X-Mailer: Microsoft Outlook CWS, Build 9.0.2416 (9.0.2911.0) Importance: Normal Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Anybody else having diffculties? John +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ X-Originating-IP: [210.9.51.36] From: "James Harris" To: aussie-weather at world.std.com Subject: Re: aus-wx: CHASE - Update - 4:15pm EDST Date: Tue, 26 Sep 2000 15:22:09 EST X-OriginalArrivalTime: 26 Sep 2000 05:22:09.0528 (UTC) FILETIME=[B7D7E780:01C02779] Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hey all Just got off the phone to Jimmy and co up near Sandy Hollows, not far from Merriwa in the Nth Central Tableands of NSW. Currently they are seing alot of Cu developing around them . Not too much else has happened . Cells have gone up on the mid north coast around Taree and Coffs Harbour but that is all the action in the NE so far. However... As we speak the following STA has been issued for the Central West Slopes and Plains ...... SEVERE THUNDERSTORM ADVICE BUREAU OF METEOROLOGY NEW SOUTH WALES REGIONAL OFFICE Issued at 1549 on Tuesday the 26th of September 2000 This advice affects people in the following weather districts: Central West Slopes and Plains south of Coonamble Thunderstorms are forecast within the advice area from 3:50pm to 7:50pm. Some of these are expected to be severe bringing large hailstones, destructive winds and very heavy rainfall. Currently Radar is showing cells occuring towards the Parkes Dubbo area (when this happens you normally now they are big as radar doesnt normally pick up anything out that far !) with Sat Pics showing two very distinct cells with strong tops on IR. Hopefully the guys will get a bit of action before the Sun sets as they head towards the Dubbo area now. Currently they are around Merriwa heading towards Gulgong where excellent views can be had to the West. Feel free to call them should anything happen as updates are always appreciated. James Harris >Jimmy, David Croan and Paul Graham are heading up to the Hunter Valley for >a chase. Jimmy's mobile is 0408 020 468. >regards, Michael > > ============================================================= > Michael Bath mailto:mbath at ozemail.com.au > McLeans Ridges http://australiasevereweather.com/ > NE NSW Australia http://www.lightningphotography.com/ > ASWA Secretary http://www.severeweather.asn.au/ > ============================================================= > _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com. +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ Date: Tue, 26 Sep 2000 01:31:54 -0400 From: "Leslie R. Lemon" Subject: aus-wx: Are AU supercells different to US supercells? was Re: aus-wx: Cumulonimbus tops HOW HIGH! To: "INTERNET:aussie-weather at world.std.com" X-MIME-Autoconverted: from quoted-printable to 8bit by europe.std.com id BAA21220 Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Anthony Cornelius wrote: > This is interesting - as the Australian (or BoM) definition of a > supercell states that a mesocyclone must be present for a minimum of > twenty minutes, for at least 1/3 of the thunderstorms height. It also > states a speed for rotation, which I can never remember, and am > comfortably perched on my chair to go and look it up :) Is the US > definition of a supercell "simply" the presence of a rotating updraft? Early on Ralph Donaldson of the Air Force Geophysical Lab developed what he called a plan shear indicator. That was the first "Doppler weather radar". But it simply showed shear. Through the use of that device he derived rules to identify a storm scale vortex. These rules began as being very stringent. The circulation needed to be deeper than its width, and needed to persist for a period such that using the estimated rotational value, it would rotate at least 1/2 a revolution. It also needed to be invariant over something like 45 degrees of azimuthal change. Well, we at NSSL (Dale Sirmans, Roger Brown, Don Burgess, and myself) were able to develop develop the first digital, S-band, pulse Doppler radar and began to better understand the circulation that accompanied some storms and that was related to Brook's (1949) "tornado cyclone". This understanding was gained through post data collection studies months after the data collection. We collected the data "blind" because we had no real-time display system then. The computers and other processing systems had not yet progressed to the point that we could see the Doppler data as it was collected. It took a while to develop the first real-time display system. But we continued to improve our understanding and named the circulation with a more general term called the "mesocyclone". After data collection over two or three years, we made some changes. We then relaxed the identification requirements somewhat. We lowered the depth requirements to be equal to its diameter, lessened the persistence scales and azimuthal requirements. In fact, we removed the azimuthal change requirement. Then again, after gathering, analysing, and developing even more data, we lessened the requirements once again to a depth of at least 10,000 ft and a persistence of 2 volume scans (~ 15 to 20 minutes at that time). Finally, we now use a diameter ranging from at least about 2 km up to 10 km and persistence of 2 WSR-88D volume scans or about 10 to 12 minutes. (I was lazy here, I did not go back to our publications to look these up. The history I just gave here spanned a period of time of about 25 years. I may be off on some values and I skipped the development of the real-time displays. But the short of it is that we now have developed much less stringent identification requirements as I have just described. In order for us to use Doppler radar signatures such as the mesocyclone, and TVS identification, and other criteria in real-time for warning purposes, we had to be able to relax the identification requirements and speed up the whole process. We feel we have been successful in doing so. It would appear that the BoM has chosen to maintain a conservative approach and rather strict requirements. If I have not already I will send Jane a paper that summarizes some of this and maybe she might be able to post it on her site. Les ************************ Leslie R. Lemon Radar, Severe Storms, & Research Meteorologist Tel. 816-373-3533, 816-213-3237 E-Mail: lrlemon at compuserve.com +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ Date: Tue, 26 Sep 2000 16:49:47 +1000 From: Andrew Miskelly X-Mailer: Mozilla 4.72 [en] (Win98; I) X-Accept-Language: en To: Aussie Weather Subject: aus-wx: WEATHER: Interesting Radar Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hi all, Just looking at the Sydney Local Radar loop at 1640EST to see what's about and noticed a line of showers (which are over my place in Wollongong as I write) moving almost completely in the opposite direction to everything else on the loop - north and south - that is, onshore rather than offshore! For those of you who will read this later, the image I am refering to is saved at http://www.ozemail.com.au/~amiskelly/26090430loop.gif (looking at the line of showers near Wollongong). Andrew. -- Andrew Miskelly Illawarra/Southern Tablelands, NSW amiskelly at ozemail.com.au +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ From: "Ben Quinn" To: Subject: Re: aus-wx: ASWA site down? Date: Tue, 26 Sep 2000 15:52:54 +1000 X-Mailer: Microsoft Outlook Express 5.50.4133.2400 Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hi John, The strikeone server (which hosts the CGI coding for the members area) is down - hopefully it'll be back up soon ----- Original Message ----- From: "John Woodbridge" To: Sent: Tuesday, September 26, 2000 3:08 PM Subject: RE: aus-wx: ASWA site down? > Anybody else having diffculties? > John > +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com > with "unsubscribe aussie-weather your_email_address" in the body of your > message. > -----------------------jacob at iinet.net.au------------------------------ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ From: "Craig Williams" To: Subject: Re: aus-wx: ASWA site down? Date: Tue, 26 Sep 2000 15:57:25 +1000 X-Mailer: Microsoft Outlook Express 5.50.4133.2400 Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hiya John, Seems to be working fine for me although I had some trouble a few days ago. snip > Anybody else having diffculties? > John +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ X-Originating-IP: [210.8.232.3] From: "Patrick Tobin" To: aussie-weather at world.std.com Subject: Re: aus-wx: WEATHER: Interesting Radar Date: Tue, 26 Sep 2000 06:06:08 GMT X-OriginalArrivalTime: 26 Sep 2000 06:06:08.0968 (UTC) FILETIME=[DD127C80:01C0277F] Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Yes have been watching this as well. Check out the BoM Experimental wind and rain product at http://ows.bom.gov.au/products/reg/wwrp/IDNB0003.shtml Username and Password both " olympic " You can see some northerlies starting to develop to the east of Wollongong - indicating the presence of a developing low (at 5pm)?? Some northerlies also developing to the north of Sydney - this is against the background of a general southerly surface flow. Also interesting to see lines of surface divergence and convergence as the bands of rain first swept over Sydney (ie typically winds were SE ahead of an eastward moving rainband and SW behind it). Patrick Rain periods and max of 12 in Canberra today No further storms today although we may get some later tonight that have formed over the warmer Riverina, CW slopes and then drift eastward. The underlying cold air over eastern NSW may provide some (slight) further uplift as the cells in the warmer air to the west move east and are forced over the ranges (and colder surface layers). >From: Andrew Miskelly >Reply-To: aussie-weather at world.std.com >To: Aussie Weather >Subject: aus-wx: WEATHER: Interesting Radar >Date: Tue, 26 Sep 2000 16:49:47 +1000 > >Hi all, > >Just looking at the Sydney Local Radar loop at 1640EST to see what's >about and noticed a line of showers (which are over my place in >Wollongong as I write) moving almost completely in the opposite >direction to everything else on the loop - north and south - that is, >onshore rather than offshore! > >For those of you who will read this later, the image I am refering to is >saved at http://www.ozemail.com.au/~amiskelly/26090430loop.gif (looking >at the line of showers near Wollongong). > >Andrew. > >-- >Andrew Miskelly >Illawarra/Southern Tablelands, NSW >amiskelly at ozemail.com.au > +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com > with "unsubscribe aussie-weather your_email_address" in the body of your > message. > -----------------------jacob at iinet.net.au------------------------------ _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com. +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ X-Originating-IP: [203.54.89.115] From: "S G" To: aussie-weather at world.std.com Subject: Re: aus-wx: Adelaide wins back reputation as the place to miss out on rain Date: Tue, 26 Sep 2000 15:41:00 CST X-OriginalArrivalTime: 26 Sep 2000 06:11:00.0459 (UTC) FILETIME=[8AD07BB0:01C02780] Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Thanks Martin for your e-mail. Well just south east of the city I failed to even pick up 0.2mm, not even a trace. It gets really annoying when these types of trough systems develop for days over SA bringing a lot of cloud to Adelaide and then take all of the weather to the eastern states. As for the so called stronger front I can't even pick which front it is. Some models show 3 cold fronts in the southern ocean and suggest the weaking front near WA at the moment is going to bring a morning shower or two on Friday, other models show the strengthening cold front in the eastern Indian Ocean at the moment as the so called strong cold front. It all looks like a lot of rubbish to me. Although pressures are meant to become low as the front approaches, (around 1004hpa) and it is meant to get up to 28 degrees on Thursday. I am surprised the Bureau hasn't forecast a possible late shower for Thurs. night when the front should be right on our doorstep. There is a chance of a thunderstorm with this system, but I will definately not hold my breath after the terrible performance of the trough system that has just passed through! _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com. +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ Date: Tue, 26 Sep 2000 16:11:28 +1000 From: Anthony Cornelius X-Mailer: Mozilla 4.72 [en] (Win98; I) X-Accept-Language: en To: aussie-weather at world.std.com Subject: Re: aus-wx: WEATHER: Interesting Radar Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hi Andrew, Looking at the obs and Sydney sounding, I'd say the showers over Sydney are from low-mid level cloud from this rain band moving through. They'd be moving westwards with the mid level 'jet' analysed on the soundings. The obs indicate some SSE winds around the place, so the Wollongong showers area probably from the SE'ly convergence as the wind blows onto the land. The marginal stability would have assisted in allowing showers to form. Just speculating... Anthony Cornelius Andrew Miskelly wrote: > > Hi all, > > Just looking at the Sydney Local Radar loop at 1640EST to see what's > about and noticed a line of showers (which are over my place in > Wollongong as I write) moving almost completely in the opposite > direction to everything else on the loop - north and south - that is, > onshore rather than offshore! > > For those of you who will read this later, the image I am refering to is > saved at http://www.ozemail.com.au/~amiskelly/26090430loop.gif (looking > at the line of showers near Wollongong). > > Andrew. > > -- > Andrew Miskelly > Illawarra/Southern Tablelands, NSW > amiskelly at ozemail.com.au > +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com > with "unsubscribe aussie-weather your_email_address" in the body of your > message. > -----------------------jacob at iinet.net.au------------------------------ -- Anthony Cornelius Queensland Coordinator of the Australian Severe Weather Association (ASWA) (07) 3390 4812 14 Kinsella St Belmont, Brisbane QLD, 4153 Please report severe thunderstorms on our Queensland severe thunderstorm reporting line on (07) 3390 4218 or by going to our homepage at http://www.severeweather.asn.au +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ From: "Andrew Godsman" To: Subject: aus-wx: Weather Update: Illawarra Rain Date: Tue, 26 Sep 2000 15:58:58 +1000 X-Mailer: Microsoft Outlook Express 5.00.2919.6600 Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com

Further to the earlier post. the weather cleared almost instantaneously as I sent the last email, until I rode home. The winds were mod S, and it is fairly cool by recent standards (~16-17 deg C). Rain again commenced and fairly heavily, gutters half full sought of stuff. My first thoughts is that it feels ECL-ish today. Then just travelled down to North W'gong beach and got blown away. The wind went from mod to gale force and gusting in the space of 5 minutes, rocking the car, blowing water up the windscreen and stripping needles from the Norfolk pines.

Here's hoping for a nice ECL, although the timing wouldn't be good for Syd. Then again, it's probably just an increasing pressure gradient across the coast.

Andrew Godsman

From a reasonably wet, getting soggy, Wollongong.

From: "David Findlay" To: Subject: RE: aus-wx: WEATHER: Interesting Radar Date: Tue, 26 Sep 2000 16:20:08 +1000 X-Mailer: Microsoft Outlook 8.5, Build 4.71.2173.0 Importance: Normal Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Is this doppler radar? David Findlay -----Original Message----- From: aussie-weather-approval at world.std.com [mailto:aussie-weather-approval at world.std.com]On Behalf Of Patrick Tobin Sent: Tuesday, 26 September 2000 4:06 PM To: aussie-weather at world.std.com Subject: Re: aus-wx: WEATHER: Interesting Radar Yes have been watching this as well. Check out the BoM Experimental wind and rain product at http://ows.bom.gov.au/products/reg/wwrp/IDNB0003.shtml Username and Password both " olympic " You can see some northerlies starting to develop to the east of Wollongong - indicating the presence of a developing low (at 5pm)?? Some northerlies also developing to the north of Sydney - this is against the background of a general southerly surface flow. Also interesting to see lines of surface divergence and convergence as the bands of rain first swept over Sydney (ie typically winds were SE ahead of an eastward moving rainband and SW behind it). Patrick Rain periods and max of 12 in Canberra today No further storms today although we may get some later tonight that have formed over the warmer Riverina, CW slopes and then drift eastward. The underlying cold air over eastern NSW may provide some (slight) further uplift as the cells in the warmer air to the west move east and are forced over the ranges (and colder surface layers). >From: Andrew Miskelly >Reply-To: aussie-weather at world.std.com >To: Aussie Weather >Subject: aus-wx: WEATHER: Interesting Radar >Date: Tue, 26 Sep 2000 16:49:47 +1000 > >Hi all, > >Just looking at the Sydney Local Radar loop at 1640EST to see what's >about and noticed a line of showers (which are over my place in >Wollongong as I write) moving almost completely in the opposite >direction to everything else on the loop - north and south - that is, >onshore rather than offshore! > >For those of you who will read this later, the image I am refering to is >saved at http://www.ozemail.com.au/~amiskelly/26090430loop.gif (looking >at the line of showers near Wollongong). > >Andrew. > >-- >Andrew Miskelly >Illawarra/Southern Tablelands, NSW >amiskelly at ozemail.com.au > +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com > with "unsubscribe aussie-weather your_email_address" in the body of your > message. > -----------------------jacob at iinet.net.au------------------------------ _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com. +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ X-Originating-IP: [210.8.232.4] From: "Patrick Tobin" To: aussie-weather at world.std.com Subject: RE: aus-wx: WEATHER: Interesting Radar Date: Tue, 26 Sep 2000 06:50:38 GMT X-OriginalArrivalTime: 26 Sep 2000 06:50:39.0076 (UTC) FILETIME=[1494A240:01C02786] Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com David - the help page at http://ows.bom.gov.au/products/reg/wwrp/wwrp_help_anal.html says that the wind direction and strength is detected using Doppler radar. Its great to see this site put through its paces on an interesting wx day. The info on local/meso scale developments is pretty interesting. Whilst I am not keen for the Games to be too weather affected, it would be great to follow a really significant storm across the Sydney area. I am sure there are a lot of local effects that we are still to learn about. >From: "David Findlay" >Reply-To: aussie-weather at world.std.com >To: >Subject: RE: aus-wx: WEATHER: Interesting Radar >Date: Tue, 26 Sep 2000 16:20:08 +1000 >Is this doppler radar? > >David Findlay _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com. +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ From: "David Findlay" To: Subject: aus-wx: Doppler Radar Date: Tue, 26 Sep 2000 16:58:32 +1000 X-Mailer: Microsoft Outlook 8.5, Build 4.71.2173.0 Importance: Normal Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com How long do you think it will be before doppler radar is installed Australia wide? Also is the BOM still gunna release the radar data free? David Findlay +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ From: "Andrew Godsman" To: Subject: Re: aus-wx: WEATHER: Interesting Radar Date: Tue, 26 Sep 2000 17:31:09 +1000 X-Mailer: Microsoft Outlook Express 5.00.2919.6600 Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Further again from my 5:00pm post. I have just trained along the cycleway at North Wollongong for the past hour. Winds are gusting quite strongly from the ESE, maybe even E. The coal ships off-shore attest to the direction. I did forget to mention that as the winds changed direction with the gusts at around 4:45pm, they also changed direction from SSE almost S to the current direction. The seas are picking up fairly quickly also, going from on almost off-shore wind, to hard on-shore. It'll be interesting to see what happens overnight. We can often get some big totals if the conditions are right and the rain hits the escarpment. Andrew Godsman +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ Date: Tue, 26 Sep 2000 18:22:00 +1000 From: Matthew Smith X-Mailer: Mozilla 4.73 [en] (Win98; U) X-Accept-Language: en To: aussie-weather at world.std.com Subject: aus-wx: NSW storms Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Massive storm complex between Mudgee and Bathurst. David, Paul and Jimmy are at Mudgee, i cant believe this thing has grown so large... there is an STA out for it. (look at Sydney Broad radar) Matt Smith +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ Date: Tue, 26 Sep 2000 19:42:14 +1000 From: Keith Barnett X-Mailer: Mozilla 4.6 [en] (Win95; I) X-Accept-Language: en To: aussie-weather at world.std.com Subject: Re: aus-wx: storms - Central Tablelands and now Schofields. Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com It was all a sound and light show at Seven Hills with a mere 0.4mm of rain however the barometer dropped 2 or 3 millibars in an hour or so. Very interesting.... +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ Date: Tue, 26 Sep 2000 19:46:25 +1000 From: Keith Barnett X-Mailer: Mozilla 4.6 [en] (Win95; I) X-Accept-Language: en To: aussie-weather at world.std.com Subject: Re: aus-wx: Confused barometer tappers. Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com I suppose at least a few people have heard of the expression: 'Tapping the barometer will not make the weather better but the barometer worse'... +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ From: "Karratha Weather" To: Subject: aus-wx: First 40C for the Pilbara today Date: Tue, 26 Sep 2000 17:05:18 +0800 X-Mailer: Microsoft Outlook Express 5.50.4133.2400 Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com

Hey all

First 40C of the spring today at Marble Bar.

! Marble Bar ! ! 0!NW 11 ! 39 9! 40 ! !

While in the west Pilbara the other hot spot Mardie only reached a max of 30C today with fresh W'ly winds all day.

! Mardie ! ! !WNW 24 ! 29 51! 30 ! !

Here in Karratha we had a max of 34.3C at 12:03pm with fresh W'ly winds all day. At this stage the weekend is looking VERY hot and I'm expecting my first 40C day on either Saturday or Sunday. Currently here at 5pm WST its 27.9C 18C DP 1010.8 hPa with fresh W'ly winds.

A little more humid at Karratha Airport:

KARRATHA (YPKA) METAR YPKA 0900Z 27016KT //// 27/22 Q1011 RMK RF00.0/000.0

Some nice storms developing in the NW Kimberley again this afternoon with Halls Creek radar picking up one of the cells with light blue right on the outer edge of the radar! Also last night the Kimberley got its first taste of the summer wet with 18mm at Theda Station to 9am in the Nth Kimberley.

Regards

Karratha Weather Observations
http://www.karrathaweather.org
E-mail
Jason - jason at karrathaweather.org
Webmaster - webmaster at karrathaweather.org

From: "Michael Thompson" To: Subject: Re: aus-wx: Cumulonimbus tops HOW HIGH!. Date: Tue, 26 Sep 2000 20:26:26 +1000 Organization: X-Mailer: Microsoft Outlook Express 5.00.2014.211 Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com I find that method quite good for measuring congestus, but no large storms. Never underestimate large storm heights is my motto. Two examples I can think of. The first was a isolated storm at Lithgow, there was no other cloud in the way and the sjy relatively clear. I could plainly see all the anvil and even part of the updraft from here in Mt Warrigal. That storm was 150km away with at least 1200m of mountain height in between. On another very dry day with crystal clear air I could pick up some cells way over the ocean horizon, I checked the radar and they were over 300km away !! Jimmy has told me he has seen Cb's near Yass from his place in NW Sydney. Michael > Clive and list, > To help me, and I'm sure others of similar experience in weather observations. Do you guys have a simple method for estimating cloud top hieght, other than experience and estimation? I would be interested to hear something as all I usually use is the approx height of the Illawarra escarpment and stack multiples of these. Not very accurate I am very sure. > Regards > Andrew Godsman > > > > EOM > > NOTICE - This message contains information intended only for the use of the addressee named above. It may also be confidential and/or privileged. If you are not the intended recipient of this message you are hereby notified that you must not disseminate, copy or take any action in reliance on it. If you have received this message in error please notify postmaster at bhp.com. > +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com > with "unsubscribe aussie-weather your_email_address" in the body of your > message. > -----------------------jacob at iinet.net.au------------------------------ > +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ From: "Matthew Piper" To: "Aussie Weather" Subject: aus-wx: Lightning now visible from Blaxland Date: Tue, 26 Sep 2000 20:35:01 +1100 X-Mailer: Microsoft Outlook Express 5.50.4133.2400 Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com

Hi Everyone,

Lightning is now visible to my west from a storm that has formed near Oberon. It isnt that frequent at the moment (only around 1 flash a minute) but is better than nothing. Looks like its going to be an exciting night here as that major storm system near Bathurst edges closer.

Matthew Piper (Blaxland NSW)

P.S. Has anyone noticed the storm north of Bathurst has just split on the radar. It appears that the most intense part is now moving in a different direction to the weaker southern half. Could this be a supercell?

Date: Tue, 26 Sep 2000 20:36:43 +1000 From: Jane ONeill X-Mailer: Mozilla 4.5 [en] (Win95; I) X-Accept-Language: en To: Aussie-wx Subject: aus-wx: OFFTOPIC: Photocopier in Victoria Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Leslie Lemon wrote: If I have not already I will send Jane a paper that summarizes some of this and maybe she might be able to post it on her site. Q: does anyone own (or have access to) a 'whizzbang' photocopier & a bit of spare time in Victoria?? - I need to copy these wonderful papers that Les has sent me so they will scan properly (there are quite a few of them) but the copier we have, and I've tried every possible cure for its problems...well, it just isn't up to the task. Hence, my slowness in getting said reports & the one from Browning (~1978) up on the MSC site. Please reply off list. WX REPORT: 38.1mm in the last 36 hours is a pretty reasonable total for here. Dandenong Creek has finally broken its banks. Jane -------------------------------- Jane ONeill - Melbourne cadence at stormchasers.au.com Melbourne Storm Chasers http://www.stormchasers.au.com ASWA - Victoria http://www.severeweather.asn.au -------------------------------- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ Date: Tue, 26 Sep 2000 20:33:24 +1000 From: David Carroll X-Mailer: Mozilla 4.74 [en] (Win98; U) X-Accept-Language: en To: Aussie Weather Subject: aus-wx: LIGHTNING GALORE Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com 8.20PM 26/09 HI ALL, What a storm that we have here now. Lightning show I have not seen for a long time. It extends from Oberon area right out to Mudgee and Hill End. Could see alot of Cg's towards Mudgee. We have blackouts here already, didnt think it would take long with the lightning around. My lights just dimmed here. DAve +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ From: "Pearce" To: Subject: Re: aus-wx: CHASE - Update - 8:30pm EDST Date: Tue, 26 Sep 2000 20:38:24 +1000 X-Mailer: Microsoft Outlook Express 5.00.3018.1300 Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hi all Jimmy and the guys are at Gulgong watching the absolute beast of a storm out there - check it out on satpics if you haven't already. He reckons it is a classic supercell, and has seen one lowering already. To me, the satpic structure as well as the extreme longevity of the storm as well as strong radar echoes a long way out also indicate strong chances of supercellular structure. The storm is currently tracking ESE and may come into play for northern Sydney later in the evening. Further storms are also developing along the ranges to the west of Sydney. This is going to be one very interesting night. Matt Pearce > >Jimmy, David Croan and Paul Graham are heading up to the Hunter Valley for > >a chase. Jimmy's mobile is 0408 020 468. > >regards, Michael > > > > ============================================================= > > Michael Bath mailto:mbath at ozemail.com.au > > McLeans Ridges http://australiasevereweather.com/ > > NE NSW Australia http://www.lightningphotography.com/ > > ASWA Secretary http://www.severeweather.asn.au/ > > ============================================================= > > > _________________________________________________________________________ > Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. > > Share information about yourself, create your own public profile at > http://profiles.msn.com. > > +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com > with "unsubscribe aussie-weather your_email_address" in the body of your > message. > -----------------------jacob at iinet.net.au------------------------------ > +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ From: "Michael Thompson" To: Subject: Re: aus-wx: Weather Update: Illawarra Rain Date: Tue, 26 Sep 2000 20:44:29 +1000 Organization: X-Mailer: Microsoft Outlook Express 5.00.2014.211 Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com

There was some interesting weather today. You observed correctly with the wind, it swung more east and went from nothing to 20-30knots in no time. At exactly the same time a low layer of nimbo stratus developed under the other stuff and drizzle commenced. Still drizzle now at 8.40pm. Must be heaps of moisture feeding into the low, I just hope it goes to good use storm wise. Radar from the BOM Olympic site shows two major storms active, a group near Coffs Harbour and another interesting line out near Mudgee. The Mudgee one has a developing line on the south side and the general movement is east. Should be enough for Jimmy to get a show, if development spreads south further we may even get a spark here, but I doubt it.

Further to the earlier post. the weather cleared almost instantaneously as I sent the last email, until I rode home. The winds were mod S, and it is fairly cool by recent standards (~16-17 deg C). Rain again commenced and fairly heavily, gutters half full sought of stuff. My first thoughts is that it feels ECL-ish today. Then just travelled down to North W'gong beach and got blown away. The wind went from mod to gale force and gusting in the space of 5 minutes, rocking the car, blowing water up the windscreen and stripping needles from the Norfolk pines.

Here's hoping for a nice ECL, although the timing wouldn't be good for Syd. Then again, it's probably just an increasing pressure gradient across the coast.

Andrew Godsman

From a reasonably wet, getting soggy, Wollongong.

Date: Tue, 26 Sep 2000 20:52:19 +1000 From: Jane ONeill X-Mailer: Mozilla 4.5 [en] (Win95; I) X-Accept-Language: en To: Aussie-wx Subject: aus-wx: Re: Are AU supercells different to US supercells Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Evening all, Anthony wrote: This is interesting - as the Australian (or BoM) definition of a supercell states that a mesocyclone must be present for a minimum of twenty minutes, for at least 1/3 of the thunderstorms height. I've only found one definition so far in my library:- 1. the BoM definition in the green book that I found is from Moller et al, 1994 - "a thunderstorm cell is classified as a supercell if it possesses a mesocyclone with a vertical vorticity >= .01 s-1 occupying >= 1/3 of the cell's depth for a period of tens of minutes" I'm having trouble even locating the term 'supercell' in some books that I would expect to define it!!! Q: Does anyone know the height of the Canberra storm of 1971 (Woden Valley) & was it a supercell? If the answer is yes, was it a supercell during both passes over Canberra considering we are talking about quite a few hours. Would this account for the movement of the storm (SW to NE, then turning back towards the SW)? -------------------------------- Jane ONeill - Melbourne cadence at stormchasers.au.com Melbourne Storm Chasers http://www.stormchasers.au.com ASWA - Victoria http://www.severeweather.asn.au -------------------------------- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ From: "Paul Rands" To: "aussie-weather at world.std.com" Date: Tue, 26 Sep 2000 20:44:06 +1000 X-Mailer: PMMail 98 Standard (2.01.1600) For Windows NT (4.10.67766446) Subject: aus-wx: Lightning at Penrith Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hi Gang it's 21:03 and we just had the first flash of lightning and thunder following 10 seconds after. Good night ahead! It;'s 16.4 degrees here at South Penrith right now From the mind of Paul Rands (E-mail: prands at efter-stormen.com - ICQ: 1254371) Ofwerman on IRC (DAL Net) +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ Date: Tue, 26 Sep 2000 21:19:08 +1000 From: Andrew Miskelly X-Mailer: Mozilla 4.72 [en] (Win98; I) X-Accept-Language: en To: aussie-weather at world.std.com Subject: Re: aus-wx: WEATHER: Interesting Radar Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hi all, http://ows.ho.bom.gov.au/products/reg/wwrp/wwrp_anal.shtml The experimental dopler stuff now shows the very moist onshore wind driving directly against the oncoming storms. The olympic site also has a bulletin in the warnings section with what the BoM expect to happen thunderstorm-wise. Andrew. Andrew Miskelly wrote: > > Hi all, > > Just looking at the Sydney Local Radar loop at 1640EST to see what's > about and noticed a line of showers (which are over my place in > Wollongong as I write) moving almost completely in the opposite > direction to everything else on the loop - north and south - that is, > onshore rather than offshore! > > For those of you who will read this later, the image I am refering to is > saved at http://www.ozemail.com.au/~amiskelly/26090430loop.gif (looking > at the line of showers near Wollongong). > > Andrew. > > -- > Andrew Miskelly > Illawarra/Southern Tablelands, NSW > amiskelly at ozemail.com.au > +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com > with "unsubscribe aussie-weather your_email_address" in the body of your > message. > -----------------------jacob at iinet.net.au------------------------------ -- -- Andrew Miskelly Illawarra/Southern Tablelands, NSW amiskelly at ozemail.com.au +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ Date: Tue, 26 Sep 2000 21:25:10 +1000 From: Andrew Miskelly X-Mailer: Mozilla 4.72 [en] (Win98; I) X-Accept-Language: en To: Aussie Weather Subject: aus-wx: STORM: Olympic Warning Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com SEVERE THUNDERSTORM WARNING TOP PRIORITY FOR IMMEDIATE BROADCAST Issued at 21:15 on Tuesday the 26th of September 2000 This warning affects people in the Sydney Metropolitan area. Also included in this warning are the following Olympic venues: Horsley Park. This warning is current from 2115 until 2145. A line of thunderstorms is currently located near Badgerys Creek to Camden and is forecast to move towards the southeast reaching Campbelltown within half an hour. Large hailstones and destructive winds are possible. -- Andrew Miskelly Illawarra/Southern Tablelands, NSW amiskelly at ozemail.com.au +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ From: "Paul Rands" To: "aussie-weather at world.std.com" Date: Tue, 26 Sep 2000 21:09:38 +1000 X-Mailer: PMMail 98 Standard (2.01.1600) For Windows NT (4.10.67766446) Subject: aus-wx: Heavy Rain Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hi again guys the heavy rain just hit here at South Penrith (NSW) at 21:24, the sound was quite loud, had to check if it was hail... no hail :/ 15.8 degrees now From the mind of Paul Rands (E-mail: prands at efter-stormen.com - ICQ: 1254371) Ofwerman on IRC (DAL Net) +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ Date: Tue, 26 Sep 2000 22:06:57 +1000 From: Mark X-Mailer: Mozilla 4.7 [en] (Win98; I) X-Accept-Language: en To: aussie-weather at world.std.com Subject: aus-wx: hello Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hi there! I'm a newbie here and i'm just writing to let you know there is thunder and lightning close to north sydney. you prolly know that already but hey i'm trying :)) Mark. +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ From: "Patrick Tobin" To: "Aussie-wx" Subject: aus-wx: Sydney storms + Canberra again Date: Tue, 26 Sep 2000 21:49:31 +1000 X-Mailer: Microsoft Outlook Express 4.72.3110.5 Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Anyone who has been to the Olympics will know that on leaving Olympic Park - especially in the evening when a number of events finish together there can be a large queue for the train. This queue has generally been handled very well by the organisers in my experience over the last week. However you are still likely to be standing or walking slowly for some minutes out in the open with no cover. The severe warning advising of damaging hail and winds has particularly poignancy. You have to feel sorry for anyone potentially caught out in this: SEVERE THUNDERSTORM WARNINGTOP PRIORITY FOR IMMEDIATE BROADCASTIssued at 21:56 on Tuesday the 26th of September 2000 This warning affects people in the Sydney Metropolitan area.This warning also affects people in the following Local Government Areas:Wollongong. Also included in this warning are the following Olympic venues:Sydney City, Sydney Harbour, Bondi Beach, Offshore, Olympic Park, Bankstown, Horsley Park, Blacktown This warning is current from 2200 until 2300. A line of thunderstorms lies from near Mascot to Wollongong moving offshore in the next 15 minutes. Another thunderstorm is located between Blacktown and Horsley Park moving east-southeast and reaching the coast within the next hour. Large hailstones and destructive winds are possible. .......................................... Mind you some with quick thinking and a good camera some people may get some great shots.. ;) Looking at radar, these storms are very fast moving and whatever has happened looks like it will have just about finished by the time I send this. Patrick Well well well just about to press the send button and then I hear that rumbling sound again... This one has crept up on me again - I was so focussed on Sydney action that I ignored my own back yard (not helped with the Wagga radar out for upper air soundings and the ASWA site still not working). Quite a lightning active storm approaching Canberra from the WSW at 10.30pm. The lightning is well obscured by low cloud and drizzle so hard to see too clearly. Should be an interesting night. +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ From: "Pearce" To: Subject: Re: aus-wx: hello Date: Tue, 26 Sep 2000 22:53:27 +1000 X-Mailer: Microsoft Outlook Express 5.00.3018.1300 Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hi Mark and all Well, what a show that was! Amazing lightning and thunder here on the northern suburbs of Sydney, with the system now moving out to the northeast over the Central Coast. We have just been discussing on IRC the possibility that this whole system may be a Mesoscale Convective System(MCS), given the characteristic satpic signature, as well as the embedded nature of the cells within it. It is certainly widespread enough for it to be one. Anyone else have any thoughts on this idea? I for one cannot remember a MCS in Sydney for some time. What a great day...storm to start it at 3:30am and now one to finish it...couldn't think of anything better. Matt +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ From: " Max King" To: Subject: Re: aus-wx: hello Date: Tue, 26 Sep 2000 22:58:40 +1000 X-Mailer: Microsoft Outlook Express 5.00.2615.200 Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hey Mark! Welcome to the list...... I'm at Willoughby and we're getting hammered :) Max ----- Original Message ----- From: Mark To: Sent: Tuesday, September 26, 2000 10:06 PM Subject: aus-wx: hello > Hi there! > > I'm a newbie here and i'm just writing to let you know there is thunder and > lightning close to north sydney. you prolly know that already but hey i'm > trying :)) > > Mark. > > +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com > with "unsubscribe aussie-weather your_email_address" in the body of your > message. > -----------------------jacob at iinet.net.au------------------------------ > +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ Date: Tue, 26 Sep 2000 22:11:52 +1000 From: Matthew Smith X-Mailer: Mozilla 4.73 [en] (Win98; U) X-Accept-Language: en To: aussie-weather at world.std.com Subject: aus-wx: Sydney Storms Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Wow what a night ! My personal opinion, is that the storms in Sydney tonight formed on the outflow of a probable MCS which formed during the late afternoon, which Jimmy and the guys were on. Around 10 CG's within 1km here in burwood, 2 within a few hundred metres whilst on the phone to Anthony and Matt Pearce, whome i think enjoyed the crack bang thunder. More storms down near Canberra ATM which Patrick described... heres hoping for more :) Just now, a nice strong wind gust... hmmmmmm Matt Smith http://www.sydneystormchasers.com +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------ From: "Michael Thompson" To: Subject: Re: aus-wx: Re: aussie-weather-digest V1 #749 Date: Tue, 26 Sep 2000 20:55:22 +1000 Organization: X-Mailer: Microsoft Outlook Express 5.00.2014.211 Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Great part of Wollongong up there on the escarpment. Unfortunately there has been the loss of life with the mudslides up that way in the past, perhaps it was the same one. I used to work in Sydney in the early 1990's and catch the train up, how often when the train left Port Kembla it was dry, only to be pelting down at Wombarra, only to clear again once in Helensburg. Michael > Wombarra boy, having left there in 1985 after 19 years to go to uni in Canberra. > I used to keep a gauge there for a few years and provide rainfall figures to Win > 4. > > Our family has personal experience of the effects of the phenomenal falls that > part of the world can get - my parents' place has been struck twice in the last > 10 years, losing their car on each occasion amongst other innumerable effects, > when high intensity stationary falls occurred, the runoff dammed by earthworks > from the past railway electrification, and collapsing the railway embankment > behind their place. On a lighter side, one particular memory is the storm > that broke the 1983 drought which dumped 113 mm in my gauge in around two hours, > sending the contents of our vegie garden down the creek and out into the street, > sailing down the road. > > Best regards > DVC > > > _____________________________________________________________________ > CAUTION - This message may contain privileged and confidential > information intended only for the use of the addressee named above. > If you are not the intended recipient of this message you are hereby > notified that any use, dissemination, distribution or reproduction > of this message is prohibited. If you have received this message in > error please notify Ansett Australia immediately. Any views expressed > in this message are those of the individual sender and may not > necessarily reflect the views of Ansett Australia. > > ABN Ansett Australia Ltd 37 004 209 410 > ABN Ansett International Ltd 72 060 622 460 > _____________________________________________________________________ > +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com > with "unsubscribe aussie-weather your_email_address" in the body of your > message. > -----------------------jacob at iinet.net.au------------------------------ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com with "unsubscribe aussie-weather your_email_address" in the body of your message. -----------------------jacob at iinet.net.au------------------------------