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Australian Weather Mailing List Archives: 7th February 1999 |
From Subject -------------------------------------------------------------------------------------- 001 David Hart [dhart at world.std.com] Rainfall data--Seven Hills 002 "Nandina Morris" [nandina at alphalink.com.au] Interesting Eyewitness Account of the Dec (18?) devastating 003 Anthony Cornelius [cyclone at stealth.com.au] Heat back on Next week + Brisbane Summer 004 Lindsay [writer at lisp.com.au] Snow (was: Suprise Adelaide Chase) 005 Jimmy Deguara [jimmydeguara at rocketmail.com] (no subject) 006 "Paul Graham" [v_notch at hotmail.com] Multiple Suction Vortices... 007 "Nick Sykes" [nsykes at labyrinth.net.au] Melbourne cools off (Big Time) 008 "Terry Bishop" [dymprog at mpx.com.au] Orange weather 009 Keith Barnett [weather at ozemail.com.au] Interesting Eyewitness Account of the Dec (18?) devastating 010 Keith Barnett [weather at ozemail.com.au] Multiple Suction Vortices... 011 Keith Barnett [weather at ozemail.com.au] Rainfall data--Seven Hills 012 David Croan [bustchase at yahoo.com] Melbourne Thunder 013 Chris Maunder [cmaunder at dynamite.com.au] Multiple Suction Vortices... 014 "bonzo" [bonzo at mpx.com.au] dropping pressure 015 "John Graham" [gorzzz at one.net.au] Interesting eyewitness account (18/12/98) 016 "RODNEY AIKMAN" [raikman at hotmail.com] (no subject) 017 Keith Barnett [weather at ozemail.com.au] Multiple Suction Vortices... 018 Keith Barnett [weather at ozemail.com.au] (no subject) 019 Chris Maunder [cmaunder at dynamite.com.au] Multiple Suction Vortices... 020 Keith Barnett [weather at ozemail.com.au] Multiple Suction Vortices... 021 Keith Barnett [weather at ozemail.com.au] An interesting trend? 022 Chris Maunder [cmaunder at dynamite.com.au] An interesting trend? 023 "Michael Thompson" [michaelt at ozemail.com.au] An interesting trend? & Models -------------------------------------------------------------------------------------- 001 Date: Sat, 6 Feb 1999 09:52:09 -0500 From: David Hart [dhart at world.std.com] To: aussie-weather at world.std.com Subject: aus-wx: Rainfall data--Seven Hills Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com This was sent to the list with a large attacment that made it bounce. I put the attachment in: http://world.std.com/~dhart/aussie-weather/seven-hills.html BTW, thanks for all that work, Keith. -dkh- --- >Date: Sat, 06 Feb 1999 19:44:47 +1100 >From: Keith Barnett>Mime-Version: 1.0 >To: "'aussie-weather at world.std.com'" >Subject: Rainfall data--Seven Hills > > >For anyone interested, the attachment is a table of rainfall in this >district for the last 50 years. >From 1950 to 1972 the site was the Seven Hills Poultry Research station >(now mostly a housing estate). From 1972 onwards the data are mine. To >March 1977 I was living about 1 Km south of the Research Station (about >2KM south of Seven Hills station). >After that the data are for my present address about 2km north of the >railway station. >I had a bit of trouble setting the link so I hope it works! -------------------------------------------------------------------------------------- 002 To: aussie-weather at world.std.com From: "Nandina Morris" [nandina at alphalink.com.au] Subject: Re: aus-wx: Interesting Eyewitness Account of the Dec (18?) devastating t'storm that went through NE NSW. Date: Sun, 07 Feb 99 07:22:40 PST Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com X-MIME-Autoconverted: from quoted-printable to 8bit by penman.es.mq.edu.au id IAA22886 Precisely what happened to me as an infant in the '39 Black Friday fires. Omeo - Grew up with anecdotes from my parents who said the fire would raze one house, burrow under three, burn the next then hop over the next. It stopped at our house and took a long time to move off. Locals reckon it was my mum's pear-ginger jam that saved the town. It had set so hard in the jars that it took a long time for the fire to burn through it. :-) Cheers, Nandina nandina at alphalink.com.au ---------- > This sort of thing happens in bushfires too. A house gets burnt down while the > one next door is spared. -------------------------------------------------------------------------------------- 003 Date: Sun, 07 Feb 1999 08:24:06 +1000 From: Anthony Cornelius [cyclone at stealth.com.au] X-Mailer: Mozilla 4.5 [en] (Win98; I) X-Accept-Language: en To: aussie-weather at world.std.com Subject: Re: aus-wx: Heat back on Next week + Brisbane Summer Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hi all, While our southern counterparts seem to be getting their fair share of summer, us Brisbanites have really had a cooler then average summer with temps between 28-29C with the occassional day of 30C+ and some days 25/26C!!! Certainly not the typical Brisbane summer we're used to...I'd say the SE winds are to blame. On Feb 1st I had to wear a jumper in the evening!! And another point of academic interest...Dec 1 was cool and wet, Jan 1 was cool and wet, Feb 1 was cool and wet...lets hope the trend doesn't continue. Anthony from Brisbane dpn wrote: > > Looking at the latest Forecast charts it looks like a very Strong High > pressure system Central pressure over 1030Hpa is expected to develop near > Tasmania early next week and then move slowly into the Tasman Sea. If this > proves to be the case Then the heat will be on again all next Week with > Temps well into the 30"s for Melbourne from Tuesday till at least Friday > and possibly beyond That. Dane -------------------------------------------------------------------------------------- 004 Date: Sun, 07 Feb 1999 09:26:55 -0800 From: Lindsay [writer at lisp.com.au] X-Mailer: Mozilla 3.0 (Win16; I) To: aussie-weather at world.std.com Subject: Re: aus-wx: Re: aussie-weather: Snow (was: Suprise Adelaide Chase) Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Please note: My snowfall observation for Blackheath in 1900 was wrong. I meant to say 900mm over 24 hours not 300mm. Lindsay -------------------------------------------------------------------------------------- 005 Date: Sat, 6 Feb 1999 15:50:35 -0800 (PST) From: Jimmy Deguara [jimmydeguara at rocketmail.com] To: aussie-weather at world.std.com Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hi everyone, Jimmy here. I have been quiet as a result of the failure of my e-mail server to work. I am accessing messages from rocketmail but I will not answer anything but urgent messages until the server is fixed. Cheers Jimmy -------------------------------------------------------------------------------------- 006 X-Originating-Ip: [203.2.193.71] From: "Paul Graham" [v_notch at hotmail.com] To: aussie-weather at world.std.com Subject: aus-wx: Multiple Suction Vortices... Date: Sat, 06 Feb 1999 16:34:21 PST Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com There has been some recent talk on this list about the type of damage caused by tornadoes. Interestingly, most tornadoes have multiple suction vortices which orbit around a central vortex and are not always visible to the eye. It is believed that most of the damage attributed to a tornado circulation is in fact caused by these suction vortices. In the TVC series, there is a piece of famous tornado footage, filmed from helicopter, in which these vortices are not always so obvious in the main circulation. It is an excellent example and supports the argument that these small circulations probably exist in most tornadoes but are not always so easily seen. - Paul G. -------------------------------------------------------------------------------------- 007 From: "Nick Sykes" [nsykes at labyrinth.net.au] To: "aussie-weather" [aussie-weather at world.std.com] Subject: aus-wx: Melbourne cools off (Big Time) Date: Sun, 7 Feb 1999 12:03:44 +1100 X-Mailer: Microsoft Outlook Express 5.00.0810.800 Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hi all After days of heat in the 30's. Melbourne cooled off with a bang last night. Thunderstorms lashed the suburbs. My brother in the south eastern suburbs reported flash flooding, frequent lightning and power loss. The Temperature today is in the mid-teens, and it feels bloody freezing after such a long period of hot weather. But from looking at the latest computer models it looks like the cool down will be short lived. By mid next week a solid northerly flow will again be effecting Melbourne and is expected to last at least to the weekend. So to all those Melbourne people out there, bottle some of this cool air because it isn't going to be around for long. Nick -------------------------------------------------------------------------------------- 008 From: "Terry Bishop" [dymprog at mpx.com.au] To: "Aussie-weather" [aussie-weather at world.std.com] Subject: aus-wx: Orange weather Date: Sun, 7 Feb 1999 12:19:22 +1100 X-Mailer: Microsoft Outlook IMO, Build 9.0.2212 (4.71.2419.0) Importance: Normal Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hi All, Another stormless day in Orange. We do have a brown/grey smoke haze from burning off activities further out west. (At least the skies not blue.) At 12.15pm 23C, 1011, 20%, SE/SSE 5-10 knots. Terry. mailto:dymprog at mpx.com.au -------------------------------------------------------------------------------------- 009 Date: Sun, 07 Feb 1999 12:33:39 +1100 From: Keith Barnett [weather at ozemail.com.au] X-Mailer: Mozilla 4.5 [en] (Win95; I) X-Accept-Language: en To: aussie-weather at world.std.com Subject: Re: aus-wx: Interesting Eyewitness Account of the Dec (18?) devastating t'storm that went through NE NSW. Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com You should take out a patent for fire retardant chemicals... Nandina Morris wrote: > Precisely what happened to me as an infant in the '39 Black Friday fires. Omeo - Grew up with anecdotes from my parents who said the fire would raze one house, burrow under three, burn the next then hop over the next. It stopped at our house and took a long time to move off. Locals reckon it was my mum's pear-ginger jam that saved the town. It had set so hard in the jars that it took a long time for the fire to burn through it. :-) -------------------------------------------------------------------------------------- 010 Date: Sun, 07 Feb 1999 12:36:09 +1100 From: Keith Barnett [weather at ozemail.com.au] X-Mailer: Mozilla 4.5 [en] (Win95; I) X-Accept-Language: en To: aussie-weather at world.std.com Subject: Re: aus-wx: Multiple Suction Vortices... Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com I have read in books on tornadoes that there are eye witness accounts of people who looked a tornado in the eye and saw the very thing you describe, all writhing around the inside of the main funnel like snakes, with constant lightning discharges. Very few people live to tell the tale... Paul Graham wrote: > There has been some recent talk on this list about the type of damage > caused by tornadoes. Interestingly, most tornadoes have multiple > suction vortices which orbit around a central vortex and are not always > visible to the eye. It is believed that most of the damage attributed > to a tornado circulation is in fact caused by these suction vortices. > In the TVC series, there is a piece of famous tornado footage, filmed > from helicopter, in which these vortices are not always so obvious in > the main circulation. It is an excellent example and supports the > argument that these small circulations probably exist in most tornadoes > but are not always so easily seen. > - Paul G. -------------------------------------------------------------------------------------- 011 Date: Sun, 07 Feb 1999 12:38:33 +1100 From: Keith Barnett [weather at ozemail.com.au] X-Mailer: Mozilla 4.5 [en] (Win95; I) X-Accept-Language: en To: aussie-weather at world.std.com Subject: Re: aus-wx: Rainfall data--Seven Hills Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com That's the one I had trouble with (see my 3rd attempt in which I worked out how to insert, not attach). My apologies to all who received the jolly thing 3 times altogether..this netscape software had me confused...!!! David Hart wrote: > This was sent to the list with a large attacment that made it bounce. I > put the attachment in: > > http://world.std.com/~dhart/aussie-weather/seven-hills.html > > BTW, thanks for all that work, Keith. > > -dkh- > > --- > > Date: Sat, 06 Feb 1999 19:44:47 +1100 > From: Keith Barnett > Mime-Version: 1.0 > To: "'aussie-weather at world.std.com'" > Subject: Rainfall data--Seven Hills > > For anyone interested, the attachment is a table of rainfall in this > district for the last 50 years. > >From 1950 to 1972 the site was the Seven Hills Poultry Research station > (now mostly a housing estate). From 1972 onwards the data are mine. To > March 1977 I was living about 1 Km south of the Research Station (about > 2KM south of Seven Hills station). > After that the data are for my present address about 2km north of the > railway station. > I had a bit of trouble setting the link so I hope it works! -------------------------------------------------------------------------------------- 012 Date: Sat, 6 Feb 1999 19:03:46 -0800 (PST) From: David Croan [bustchase at yahoo.com] Subject: Re: aus-wx: Melbourne Thunder To: aussie-weather at world.std.com Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com I watched a nice roll cloud from Melbourne airport yesterday (about 4:30pm)- it was fairly fragmented, and formed on the side of what seemed to be a developing cell (no lightning observed), but the rotation was very rapid. A flock of large birds also got into the act by riding the turbelence around this region. Also I had hoped to meet some of the Vic chasers but I didn't get anywhere near the amount of time off work that I expected:( David ---dpn wrote: > > Storm here in the last half hour several good Cg's . Rain still falling. > rain in last 30mins 9.4mm. Dane- Kilsyth -------------------------------------------------------------------------------------- 013 X-Sender: cmaunder at mail.dynamite.com.au X-Mailer: QUALCOMM Windows Eudora Pro Version 3.0.5 (32) Date: Sun, 07 Feb 1999 14:16:13 +1100 To: aussie-weather at world.std.com From: Chris Maunder [cmaunder at dynamite.com.au] Subject: Re: aus-wx: Multiple Suction Vortices... Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com At 12:36 7/02/99 +1100, you wrote: >I have read in books on tornadoes that there are eye witness accounts of >people who looked a tornado in the eye and saw the very thing you describe, >all writhing around the inside of the main funnel like snakes, with constant >lightning discharges. Very few people live to tell the tale... THAT would be so cool! (ah - I can dream... :) - Chris. -------------------------------------------------------------------------------------- 014 To: "weather" [aussie-weather at world.std.com] From: "bonzo" [bonzo at mpx.com.au] Subject: aus-wx: dropping pressure Date: Sun, 07 Feb 99 01:07:42 PST Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com X-MIME-Autoconverted: from quoted-printable to 8bit by penman.es.mq.edu.au id OAA24631 hi all, rob from cairns again, just checked my barometer at 13.00 hrs and falling fast 1001 hpls, have,nt had a look at the metsat picture yet. could be interesting keep you posted see you all later. rob. -------------------------------------------------------------------------------------- 015 From: "John Graham" [gorzzz at one.net.au] To: "Aussie Weather" [aussie-weather at world.std.com] Subject: aus-wx:Re interesting eyewitness account (18/12/98) Date: Sun, 7 Feb 1999 15:23:26 +1100 X-Mailer: Microsoft Outlook Express 4.72.2106.4 Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hi Anthony, What part of N/E NSW does your mum's work colleague live???????? Why I'm asking is that some people (3 actually) in West Ballina told me they seen a tornado plus I'm STILL waiting for these photo's of this funnel cloud.......I'll have to get on to my nephew about that..... It makes you wonder whether there WAS a tornado or just shit scared people not knowing what to look for............. See Ya's John from Ballina -------------------------------------------------------------------------------------- 016 X-Originating-Ip: [203.43.44.177] From: "RODNEY AIKMAN" [raikman at hotmail.com] To: aussie-weather at world.std.com Date: Sat, 06 Feb 1999 21:14:10 PST Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hello everyone. Please bear with me, this is my first ever message to you. My name is Rod Aikman, and I live in Bendigo, Vic. I would love to do some storm chasing, however being married with a young family and working full time, such a pursuit is out of the question. However I am able let anyone that is interested know what mother nature is up to, or has done in the central Victorian area. I, like most Victorians, am enjoying making the most of our cool change and have already taken the oportunity to get out and do some overdue gardening today, as the cool southerlies won't last long. North of the Divide, we have had less respite from the hot weather than those of you that live in the south. 28 days of temperatures in the 30s since January 1. Yesterday evening's change did not produce any thunderstorms in this area. Just a light sprinkle of rain that only left a trace in the rain gauge. The final wind change however was a real buster, with raised dust, leaves and other debris blowing in air. The plunge in temperature, 15 degrees within 2 hours, was rather remarkable, even for Bendigo. -------------------------------------------------------------------------------------- 017 Date: Sun, 07 Feb 1999 18:50:48 +1100 From: Keith Barnett [weather at ozemail.com.au] X-Mailer: Mozilla 4.5 [en] (Win95; I) X-Accept-Language: en To: aussie-weather at world.std.com Subject: Re: aus-wx: Multiple Suction Vortices... Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com It would be adviseable to take a barometer along... Chris Maunder wrote: > At 12:36 7/02/99 +1100, you wrote: > >I have read in books on tornadoes that there are eye witness accounts of > >people who looked a tornado in the eye and saw the very thing you describe, > >all writhing around the inside of the main funnel like snakes, with constant > >lightning discharges. Very few people live to tell the tale... > > THAT would be so cool! (ah - I can dream... :) > > - Chris. -------------------------------------------------------------------------------------- 018 Date: Sun, 07 Feb 1999 18:53:33 +1100 From: Keith Barnett [weather at ozemail.com.au] X-Mailer: Mozilla 4.5 [en] (Win95; I) X-Accept-Language: en To: aussie-weather at world.std.com Subject: aus-wx: Re: Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Welcome Rod..I haven't been on it long either. Sydney got a ripping cool southeast change today..it's only about 20 degrees at present and gusting to over 60 km (estimated). No rain, no thunderstorms but very overcast. We will only get a little drizzle for the time being... RODNEY AIKMAN wrote: > Hello everyone. > Please bear with me, this is my first ever message to > you. My name is Rod Aikman, and I live in Bendigo, Vic. I would love to > do some storm chasing, however being married with a young family and > working full time, such a pursuit is out of the question. However I am > able let anyone that is interested know what mother nature is up to, or > has done in the central Victorian area. > I, like most Victorians, am enjoying making the most of our cool > change and have already taken the oportunity to get out and do some > overdue gardening today, as the cool southerlies won't last long. North > of the Divide, we have had less respite from the hot weather than those > of you that live in the south. 28 days of temperatures in the 30s since > January 1. > Yesterday evening's change did not produce any thunderstorms in this > area. Just a light sprinkle of rain that only left a trace in the rain > gauge. The final wind change however was a real buster, with raised > dust, leaves and other debris blowing in air. The plunge in temperature, > 15 degrees within 2 hours, was rather remarkable, even for Bendigo. -------------------------------------------------------------------------------------- 019 X-Sender: cmaunder at mail.dynamite.com.au X-Mailer: QUALCOMM Windows Eudora Pro Version 3.0.5 (32) Date: Sun, 07 Feb 1999 21:04:22 +1100 To: aussie-weather at world.std.com From: Chris Maunder [cmaunder at dynamite.com.au] Subject: Re: aus-wx: Multiple Suction Vortices... Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com I think that if I had a tornado passing directly overhead nad I had the chance to (a) watch, and (b) not be diced finely, then the last thing I'd be worrying about would be a baramoter! :) At 18:50 7/02/99 +1100, Keith Barnett wrote: >It would be adviseable to take a barometer along... > >Chris Maunder wrote: > >> At 12:36 7/02/99 +1100, you wrote: >> >I have read in books on tornadoes that there are eye witness accounts of >> >people who looked a tornado in the eye and saw the very thing you describe, >> >all writhing around the inside of the main funnel like snakes, with constant >> >lightning discharges. Very few people live to tell the tale... >> >> THAT would be so cool! (ah - I can dream... :) >> >> - Chris. -------------------------------------------------------------------------------------- 020 Date: Sun, 07 Feb 1999 21:37:35 +1100 From: Keith Barnett [weather at ozemail.com.au] X-Mailer: Mozilla 4.5 [en] (Win95; I) X-Accept-Language: en To: aussie-weather at world.std.com Subject: Re: aus-wx: Multiple Suction Vortices... Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Assuming you would be watching and not being diced finely, or even at all, there would be an excellent chance for measuring the pressure... Reminds me of the storm chasers I saw on a video of the Geography channel, who tried to send a radio-controlled helicopter into a tornado but couldn't... I guess it's the thought that counts! And I don't know who the German 17th century physicist was who said 'What is not measurable, make measurable'..... Chris Maunder wrote: > I think that if I had a tornado passing directly overhead > nad I had the chance to (a) watch, and (b) not be diced > finely, then the last thing I'd be worrying about would be > a baramoter! :) -------------------------------------------------------------------------------------- 021 Date: Sun, 07 Feb 1999 21:52:04 +1100 From: Keith Barnett [weather at ozemail.com.au] X-Mailer: Mozilla 4.5 [en] (Win95; I) X-Accept-Language: en To: "aussie-weather at world.std.com" [aussie-weather at world.std.com] Subject: aus-wx: An interesting trend? Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Here's a conundrum for anyone with some mathematics. Have a look at the graph of my annual rainfall (links below) On the graph I have drawn a 6th order polynomial trend line which shows a regular up and down cycle of about 11-13 years in the rainfall (actually not me but Excel 97) Is this because it's the wrong trendline or does it really say something about the rainfall history? The graph is http://www.ozemail.com.au/~weather/rainchart.html and the data are in http://www.ozemail.com.au/~weather/rain.html -------------------------------------------------------------------------------------- 022 X-Sender: cmaunder at mail.dynamite.com.au X-Mailer: QUALCOMM Windows Eudora Pro Version 3.0.5 (32) Date: Sun, 07 Feb 1999 22:27:56 +1100 To: aussie-weather at world.std.com From: Chris Maunder [cmaunder at dynamite.com.au] Subject: Re: aus-wx: An interesting trend? Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com I'd say the shape of the curve is influenced a fair bit from the two high end data points. Look at the data data between 1970 and 1980. The actual data is peaking then fading, yet your polynomial shows the opposite. I think it's just an artefact of the 6th order poly. At 21:52 7/02/99 +1100, you wrote: >Here's a conundrum for anyone with some mathematics. >Have a look at the graph of my annual rainfall (links below) >On the graph I have drawn a 6th order polynomial trend line which shows >a regular up and down cycle of about 11-13 years in the rainfall >(actually not me but Excel 97) >Is this because it's the wrong trendline or does it really say something >about the rainfall history? >The graph is >http://www.ozemail.com.au/~weather/rainchart.html >and the data are in >http://www.ozemail.com.au/~weather/rain.html -------------------------------------------------------------------------------------- 023 From: "Michael Thompson" [michaelt at ozemail.com.au] To: [aussie-weather at world.std.com] Subject: Re: aus-wx: An interesting trend? & Models Date: Sun, 7 Feb 1999 22:30:30 +1100 X-Mailer: Microsoft Outlook Express 4.72.3110.1 Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com And it is great to see that we are in an upward phase if that trend holds true. The US models are certainly not shying from that fact, not heavy rain for Sydney / Illawarra, but consistent showers from Monday right through to at least Wednesday. From Wednesday NGP has winds going more N/NE and a trough developing that may affect us by Saturday, Melbournites look like another dose of thunder later in the week too. MRF has more persistent coastal stuff on its agenda for the later part of the week. Michael
Document: 990207.htm
Updated: 17th February, 1999 |
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