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Australian Weather Mailing List Archives: Saturday, 25 December 1999 |
From Subject -------------------------------------------------------------------------------------- 001 steve baynham [bayns at broad.net.au] bye for now 002 Mark Dwyer [mjd at wantree.com.au] Perth Heat Wave 003 Ben Quinn [bodie at flatrate.net.au] 1989 Christmas Eve Storm 004 "Leslie R. Lemon" [lrlemon at compuserve.com] Dec 10 Supercell 3D Radar (jet flow) 005 Carl Smith [carls at ace-net.com.au] Off Topic 006 "Leslie R. Lemon" [lrlemon at compuserve.com] Overshooting the EL 007 Lindsay [writer at lisp.com.au] Telegraph article RE: Hobart Yacth race weather 008 Don White [donwhite at ozemail.com.au] Perth Heat Wave 009 Chas & Helen Osborn [hosborn at tassie.net.au] Overshooting the EL] 010 "Kevin Phyland" [kjphyland at hotmail.com] Santa's presents... 011 Jimmy Deguara [jdeguara at ihug.com.au] Dec 10 Supercell 3D Radar (jet flow) 012 Nick Sykes [njsykes at yahoo.com] Nick from Kerang - Looking good 013 Matt Smith [disarm at braenet.com.au] Nick from Kerang - Looking good 014 "Patrick Tobin" [patricktobin at ozemail.com.au] STA - A Happy Christmas Present 015 Nick Sykes [njsykes at yahoo.com] Kerang - Noon Update 016 Les Crossan [les.crossan at virgin.net] Back for Christmas 017 Matt Smith [disarm at braenet.com.au] SA/VIC storms 018 Matt Smith [disarm at braenet.com.au] Melbourne Storm 019 Matt Smith [disarm at braenet.com.au] Melbourne severe storm warning 020 Paul Mossman [paulmoss at tpgi.com.au] Melbourne severe storm warning 021 Phil Bagust [paisley at cobweb.com.au] delaide's Christmas day 022 "Steve" [sselka at ozemail.com.au] Darwin Storm Cam 023 Les Crossan [les.crossan at virgin.net] Darwin Storm Cam -------------------------------------------------------------------------------------- 001 X-Sender: bayns at mail.broad.net.au X-Mailer: Windows Eudora Light Version 3.0.1 (32) Date: Fri, 24 Dec 1999 22:31:23 +1000 To: aussie-weather at world.std.com From: steve baynham [bayns at broad.net.au] Subject: aus-wx: bye for now Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com well guys, i must depart for my vacation to grafton, then canberra. am unsubscriging for i won't be back til the 17th or so!i will have internet access in canberra, so i might write if something interesting happens!!! a big MERRY CHRISTMAS to all! and a safe new year which is shaping to be a big one for us!!:) and a present to leave yous with, yes you guessedit, a loop...hahawhwhe! http://www.angelfire.com/ok2/gany/images/satloop.gif taatataa! steve +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 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------------------------------ 002 Date: Fri, 24 Dec 1999 20:58:49 +0800 From: Mark Dwyer [mjd at wantree.com.au] X-Mailer: Mozilla 4.7 [en] (Win98; I) X-Accept-Language: en To: "aussie-weather at world.std.com" [aussie-weather at world.std.com] Subject: aus-wx: Perth Heat Wave Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hi All Perth is have a small (minor) Heat wave this following week, the exspected top is about 37 C till at least Thursday. With the west coast trough not moving any were for the next 5 - 7 Days. We just might have our hottest Christmas day in 20 Years, Yes 20 Years..lol. The record for christmas day is 42 C , cant recall the actuall year this ourred, it was in the 60's i think ( any one care to comment )... only time will tell if we make it or not. And to all on the list Have a Merry Christmas and a Happy New Year. MJday +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 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------------------------------ 003 Date: Mon, 20 Dec 1999 00:13:19 +1100 From: Ben Quinn [bodie at flatrate.net.au] X-Mailer: Mozilla 4.61 [en] (Win95; I) X-Accept-Language: en To: aussie-weather at world.std.com Subject: aus-wx: 1989 Christmas Eve Storm Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hi Everyone, I have put up my account of the 1989 SE QLD Christmas eve Tornadic Thunderstorm on BSCH in the recent events section: http://www.bsch.simplenet.com/products/recentevents.htm This storm caused a huge amount of damage in Redcliffe City, with 500 houses unroofed, 1000 damaged and 17 or so declared structurally unsafe.. 2 people were also killed, and several more badly injured.. The storm also produced multiple tornadoes during it's lifetime (which could possibly have been up to 6 hours).. this is also the storm which reached 23.1 km's in height (!!!!!!!!!) There is even a picture of the gust front in the report! +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 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------------------------------ 004 Date: Fri, 24 Dec 1999 09:35:28 -0500 From: "Leslie R. Lemon" [lrlemon at compuserve.com] Subject: RE: aus-wx: Dec 10 Supercell 3D Radar (jet flow) To: "INTERNET:aussie-weather at world.std.com" [aussie-weather at world.std.com] X-MIME-Autoconverted: from quoted-printable to 8bit by europe.std.com id JAA21907 Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Jimmy and all: Storms producing all that severe and damaging weather are almost certainly supercells. As I said, hail of that size can not be produced without a mesocyclone. In my experience, hail greater than about 5 cm can only be produced by supercells. The enhanced vertical accelerations created by the turning of the flow aloft appears to be necessary to create the broad and sustained updrafts that are needed for hail growth to those sizes.. Les ************************ Leslie R. Lemon Radar, Severe Storms, & Research Meteorologist Phone: 816-373-3533 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------------------------------ 005 X-Sender: carls at ford.ace-net.com.au Date: Sat, 25 Dec 1999 03:12:05 +1000 To: aussie-weather mailing list [aussie-weather at world.std.com] From: Carl Smith [carls at ace-net.com.au] Subject: aus-wx: Off Topic Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hi All. This came off another list. Regards, Carl. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >Greetings all, > >Wishing everyone the very best for the season. > > >A Christmas Poem > > Twas the night before Christmas and Santa's a wreck... > How to live in a world that's politically correct? > His workers no longer would answer to "Elves". > "Vertically Challenged" they were calling themselves. > And labor conditions at the north pole > Were alleged by the union to stifle the soul. > Four reindeer had vanished, without much propriety, > Released to the wilds by the Humane Society. > And equal employment had made it quite clear > That Santa had better not use just reindeer. > So Dancer and Donner, Comet and Cupid, > Were replaced with 4 pigs, and you know that looked stupid! > The runners had been removed from his sleigh; > The ruts were termed dangerous by the E.P.A. > And people had started to call for the cops > When they heard sled noises on their roof-tops. > Second-hand smoke from his pipe had his workers quite > frightened. > His fur trimmed red suit was called "Unenlightened." > And to show you the strangeness of life's ebbs and flows, > Rudolph was suing over unauthorized use of his nose > And had gone on Geraldo, in front of the nation, > Demanding millions in over-due compensation. > So, half of the reindeer were gone; and his wife, > Who suddenly said she'd enough of this life, > Joined a self-help group, packed, and left in a whiz, > Demanding from now on her title was Ms. > And as for the gifts, why, he'd ne'er had a notion > That making a choice could cause so much commotion. > Nothing of leather, nothing of fur, > Which meant nothing for him. And nothing for her. > Nothing that might be construed to pollute. > Nothing to aim. Nothing to shoot. > Nothing that clamored or made lots of noise. > Nothing for just girls. Or just for the boys. > Nothing that claimed to be gender specific. > Nothing that's warlike or non-pacific. > No candy or sweets...they were bad for the tooth. > Nothing that seemed to embellish a truth. > And fairy tales, while not yet forbidden, > Were like Ken and Barbie, better off hidden. > For they raised the hackles of those psychological > Who claimed the only good gift was one ecological. > No baseball, no football...someone could get hurt; > Besides, playing sports exposed kids to dirt. > Dolls were said to be sexist, and should be passe; > And Nintendo would rot your entire brain away. > So Santa just stood there, disheveled, perplexed; > He just could not figure out what to do next. > He tried to be merry, tried to be gay, > But you've got to be careful with that word today. > His sack was quite empty, limp to the ground; > Nothing fully acceptable was to be found. > Something special was needed, a gift that he might > Give to all without angering the left or the right. > A gift that would satisfy, with no indecision, > Each group of people, every religion; > Every ethnicity, every hue, > Everyone, everywhere...even you. > So here is that gift, it's price beyond worth... > "May you and your loved ones enjoy peace on earth." > > > >God bless us, every one! > >Aranka >Oz ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Carl Smith. Gold Coast, Queensland, Australia. carls at ace-net.com.au Cyclone Tracking Maps Website: http://www.ace-net.com.au/~carls/index.htm Current Cyclone Information Page: http://www.ace-net.com.au/~carls/current.htm ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 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------------------------------ 006 Date: Fri, 24 Dec 1999 12:46:16 -0500 From: "Leslie R. Lemon" [lrlemon at compuserve.com] Subject: aus-wx: Overshooting the EL To: "INTERNET:aussie-weather at world.std.com" [aussie-weather at world.std.com] X-MIME-Autoconverted: from quoted-printable to 8bit by europe.std.com id MAA14567 Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Clyve and Anthony and All: > With the recent discussion over overshooting tops overshooting the EL - > Jane phoned Clyve Herbert to inform him of a few of the discussions. > Clyve then phoned me and we talked about a few things. > > We were wondering how supercooled water droplets could actually come > into play with the main updraft, and overshooting top. snip bunches This was a very good discussion. Good reasoning. Updrafts are very definitely the location for large amounts of supercooled water. In fact, it is these drops of supercooled water that become the source of most of the mass of hailstones. They grow very rapidly in the updraft and in the presence of this liquid water which freezes rapidly on contact with the stones. However, the water does not freeze immediately due to the heat exchange and heat budget of the stones. The largest stones often have a 10% to 15% liquid water mass that both coat the stone and that forms trapped liquid within. Sometimes these stones reach the surface rather "mushy" and can break up on impact with the surface. It has been found that by the time the updraft temperatures reach -40 all the supercooled liquid has frozen. Even here there is hail growth but it takes place in a dry fashion (vapor to solid) and much more slowly. It is in the wet growth that the lion's share of mass is accumulated. By the time most of the updrafts reach the trop, the EL for most thunderstorms, the updraft is much colder than this. So, at the tropopause and above, the updraft finds itself colder, the higher it rises the colder, much colder, it is than the environment. Note that on the IR satellite photos the storms show up as being very cold......-70 to -100 or even colder. (It is for this reason that the IR temperatures can not be used to estimate cloud top heights. Thus, the glaciation (cloud water turning to ice) usually occurs well below the overshooting dome level. However, during the phase transition from liquid to ice lower down in the updraft, there are very large quantities of latent heat released sustaining and augmenting the updraft. BTW, most hailstones have as their cores, what is called graupel (hope the spelling is correct but probably not [S]) or what can be called pellet snow. However, sometimes you can even find insects that were lofted by the updraft and become the condensation nuclei for hail growth. Remember the discussions of CAPE? Also remember that CAPE is largely due to the addition of latent heat. So, it is the initial conversion of gas to liquid where some latent heat is released and then the additional heat release when the phase changes once again from liquid to ice, that so much of the potential energy of CAPE .....the P stands for "potential", is released. That explains why so much of the CAPE is wrapped up in the water vapor....humidity of the air. Environmental shear and the fact that storms move more slowly than the wind creates storm-relative, sr, flow. It is this sr flow as well as the storm summit divergence that helps remove mass from the upper reaches of the updraft and helps maintain the updraft. Les ************************ Leslie R. Lemon Radar, Severe Storms, & Research Meteorologist Phone: 816-373-3533 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------------------------------ 007 Date: Fri, 24 Dec 1999 08:59:42 -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: Telegraph article RE: Hobart Yacth race weather Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hi Blair and others, Sadly, having worked in the newspaper industry (not in Sydney) I know how much crap editors and subbies CAN (to be balanced, they also produce good work) come up with. As a junior back in those days it was awful just walking the streets after certain silly articles. Its probably been discussed but has anyone thought of approaching the papers about the said articles etc? Again, because its a "Weather" article, somehow papers seem to get away with it, ie: few seem to think its important, compared to other "Important" stories. Lindsay P. PS: Even if we emailed them individually, it could help. Blair Trewin wrote: > > > > > To the contrary. I found it very uninteresting or perhaps I should say > > dissapointing. All it showed was how dangerous it is for those without the > > expertise to interpret computer models. They claimed the models from last > > year are very similar to this year. Perhaps to the public who merely see > > squiggles on a page that may be true. But any experienced meteorologist > > could have pointed out enough differences to throw cold water on their > > story. It was irresponsible of them to print such garbage and for the editor > > to see it worthy of a comment was pretty laughable. > > > > It's great for the media to create interesting weather stories but this was > > classic fearmongering at it's best. > > > Hear, hear. > > Another interesting angle I've seen in a newspaper today - in an > article on Y2K panic (or lack thereof) in the general population, a > Coles-Myer spokesperson was quoted as attributing increased sales of > candles in Queensland, WA and SA to the arrival of the cyclone season. > Entirely reasonable for the first two, but South Australia? > > (I guess it's just about plausible that a fast-moving SE-tracking > cyclone of the Vance or Bobby type might one day retain its TC status > into the far west of SA, but it's not something I'm holding my breath > waiting for). > > (and I won't get started on the Sydney Morning Herald's angle on > the Audit Office report. The ANAO report (or to be more precise, the > summary and recommendations - any more is for the masochist) is well > worth reading, but I wouldn't wrap my fish and chips in the 'Herald's > effort). > > Blair Trewin > +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > 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------------------------------ 008 Date: Sat, 25 Dec 1999 06:57:37 +1000 From: Don White [donwhite at ozemail.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: Perth Heat Wave Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Perth's hottest Xmas Day was 42.0 in 1968 just behind Adelaide's 42.1 way back in 1888 as the hottest for any Aussie Capital Let's hope we all "weather"the New Year in peace and contentment. Cheers, Don White Mark Dwyer wrote: > > Hi All Perth is have a small (minor) Heat wave this following week, the > exspected top is about 37 C till at least Thursday. With the west coast > trough not moving any were for the next 5 - 7 Days. We just might have > our hottest Christmas day in 20 Years, Yes 20 Years..lol. The record for > christmas day is 42 C , cant recall the actuall year this ourred, it was > in the 60's i think ( any one care to comment )... only time will tell > if we make it or not. > > And to all on the list Have a Merry Christmas and a Happy New Year. > > MJday > > +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > 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------------------------------ 009 Date: Sat, 25 Dec 1999 09:21:52 +1100 From: Chas & Helen Osborn [hosborn at tassie.net.au] X-Mailer: Mozilla 4.61 [en] (Win98; I) X-Accept-Language: en To: Australian Weather Mailing List [aussie-weather at world.std.com] Subject: [Fwd: aus-wx: Overshooting the EL] Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Anthony Cornelius wrote: > I believe it is thought that supercooled water droplets cannot remain > supercooled under temperatures of -20C and below. This reminds me of several aircraft accidents in Western Australia involving the MU2 (This is a high speed twin turboprop that uses spoilers instead of ailerons for roll control). Both of these aircraft where believed to be flying through what a friend described to me as super saturated air originating from decayed cyclones. The aircraft skin is very cold, as it flys in cold air, it hits a area of super saturated air with unstable super cooled water droplets that instantly turn to ice on impact. Ice has several effects it adds weight and changes airflow both have a negative effect on the aircraft's performance. Ice in large quantities can also jam flight controls. Both aircraft had autopilot on and accrued ice so fast that control was lost and basically fell like a stone (large block of ice). At the accident site there was no evidence of why these aircraft fell out of the sky because ice melts. Christmas morning is going to plan, the food colouring and chocolate has kicked in, the dog has run for cover and you know who likes you by the noise coming out of toys they gave. Chas Strahan Tasmania +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 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------------------------------ 010 X-Originating-IP: [203.25.186.101] From: "Kevin Phyland" [kjphyland at hotmail.com] To: aussie-weather at world.std.com Subject: aus-wx: Santa's presents... Date: Sat, 25 Dec 1999 10:29:05 EST Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hi every1, Just thought I'd wish everyone the compliments of the season and also to tell you that Santa's delivering some presents my way atm... Large towers to my NNW shooting up at phenomenal speed! Capped at present but if the temperature gets up a bit more...WHOOOHH!!! Welcome to all the list neophytes - you'll have gangs'o'fun on this list...I know I have! Cheers, Kevin from Wycheproof (36.08 S 143.23 E) ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.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------------------------------ 011 X-Sender: jdeguara at pop.ihug.com.au X-Mailer: QUALCOMM Windows Eudora Pro Version 4.2.0.58 Date: Sat, 25 Dec 1999 10:23:00 +1100 To: aussie-weather at world.std.com From: Jimmy Deguara [jdeguara at ihug.com.au] Subject: RE: aus-wx: Dec 10 Supercell 3D Radar (jet flow) Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com I am finding this discussion interesting Leslie. And your comments lead to two two discussions the first still on this storm event http://www.australiansevereweather.simplenet.com/photography/photos/1997/121 9jd20.jpg First, just to clarify, the hailstones of 5cm were reported from the northern part of the so called squall line structure. The photos of the base is given as the following sets of photos and all are related to the same storm but intensifying somewhat as it approached the coast from about 50-60km west in the first photos. The storm is situated to our west and then gradually to our northwest and north later in these images http://www.australiansevereweather.simplenet.com/photography/photos/1997/121 9jd06.jpg http://www.australiansevereweather.simplenet.com/photography/photos/1997/121 9jd08.jpg http://www.australiansevereweather.simplenet.com/photography/photos/1997/121 9jd09.jpg http://www.australiansevereweather.simplenet.com/photography/photos/1997/121 9jd10.jpg http://www.australiansevereweather.simplenet.com/photography/photos/1997/121 9jd12.jpg photos 12 to 17 This is the storm that gets the mention in the database of 5cm hail and damaging wind report mentioned in the previous e-mail. Again, we have no clarification of what type of storm it was. I assumed that it was part of a squall line system but you may be right - perhaps this particular storm was a mesocyclone (supercell). From the studies, it is well known that a supercell can develop ahead of the squall line system and perhaps gradually become part of the system. You and others may like to shed light on that. I only tread on areas which I am sure about - I don't like to say things I am not sure about. By the way, this is my account of the day Mild. Humid. Early altocumulus and altocumulus castellanus with rain - heavy rain and thunder. This moved to E.\\\ More cumulus congestus developed with a thunderstorm around 11:30am to the S. The cumulus congestus developed rain and thunder was heard around 1pm. At 1:30pm, I headed for Oakhurst and waited for Michael taking 1 photo of a smaller storm moving E. I then headed for Rooty Hill for more photographs. At 2:50pm, I went to get Michael from Mt Druitt Station and then headed back to Rooty Hill. We took video and photographs of the storms moving E with a light green tinge. Two roll clouds moved S and overhead as a result of outflow from the storms. We then headed home. The back anvil gradually cleared. A thunderstorm developed to the S during the evening. Hail damage, strong winds, and locally heavy rain was reported in these storms. Unfortunately, my description doesn't help as it is ambiguous to suggest that the "storms" could have included or not included this particular major cell. Oh well, I will try and ask the Bureau in Sydney and see if they take an interest or not. The second point I would like to raise is that you probably meant that supercells are the most common cause of giant hail events ie hail larger than 5cm. Please not that it is not so uncommon (no percentage or numbers can be provided here) to have non supercell storms sending down giant hailstones. A couple of recent good examples of pulse events were The Dec 16, '98 storm was a pulse storm in Brisbane area - it gave 10cm hail, two people reported it after measuring it with a ruler! from Anthony Cornelius And also a storm which Michael Bath and I have documented in the following report http://www.australiansevereweather.simplenet.com/storm_news/1996/docs/9602-0 1.htm please note there are also radar images of the storm (one of the few times we could get hold of them) For interests sake (when you get time) you may want to read the report on the supercell on the same day http://www.australiansevereweather.simplenet.com/storm_news/1996/docs/9602-0 3.htm There are several articles you or others may want to read from the past inn the Storm News archives section - namely http://www.australiansevereweather.simplenet.com/storm_news/index.html current http://www.australiansevereweather.simplenet.com/storm_news/news.htm archives That is for those who don't know already and enjoy reading the Storm News letter - now the official newsletter of ASWA. Sorry for rambling on but I can't help it when things take my interest. Jimmy Deguara At 09:35 24/12/99 -0500, you wrote: >Jimmy and all: > >Storms producing all that severe and damaging weather are almost certainly >supercells. As I said, hail of that size can not be produced without a >mesocyclone. In my experience, hail greater than about 5 cm can only be >produced by supercells. The enhanced vertical accelerations created by the >turning of the flow aloft appears to be necessary to create the broad and >sustained updrafts that are needed for hail growth to those sizes.. > >Les > >************************ >Leslie R. Lemon >Radar, Severe Storms, & Research Meteorologist >Phone: 816-373-3533 >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------------------------------ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 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------------------------------ 012 Date: Fri, 24 Dec 1999 15:53:56 -0800 (PST) From: Nick Sykes [njsykes at yahoo.com] Subject: aus-wx: Nick from Kerang - Looking good To: aussie-weather at world.std.com Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hey All Happy Christmas Woke this morning to the banging blinds, the light ENE of last night has now freshened considerably. Took a look out the window and saw what every severe weather watching hates "a full sky of cloud" So after a few mutterings to myself I went back to bed. Got up at 9.30 and it was starting to look a lot more promosing, the cloud had become scattered and some sweet sun was breaking through. And now at 10.50 good breaks of blue are evident, the temp has risen to 25. There is a line of congestous to the south and a nice looking Cb is to the NNW. Atomosphere appears primed for storm development. The fire weather briefing is a work of art, have a read "A high pressure system south of Tasmania will move to the Tasman Sea on Boxing day while a low pressure trough deepens over Western Victoria. The trough will then move gradually eastwards across the state on Monday. The passage of cold front across southern Victoria and Tasmania on Tuesday will reinforce a cool fresh southwest to southerly airflow across the state. Today will be generally warm and humid with easterly winds persisting, fresh along the coast. Showers and thunderstorms are expected today and are currently occurring in the Mallee and northern Wimmera. Humidity levels are generally high. Estimates issued this morning look ok although the LAL's in the Mallee should be 2 instead of 1. A significant weather chart will be issued shortly and indicates thunderstortms possible in all parts of the state and a severe thunderstorm watch area is indicated in the northwest. Sunday will be humid and warm with showers and thunderstorms becoming more widespread from the west and some locally heavy falls are likely. Winds will be mainly moderate to fresh east to northeasterly." Chrissie dinner is going to be a quick affair this year :) Got the SLR and 6 rolls of film ready, will keep everyone posted. Nick from Kerang (near swan hill) _________________________________________________________ Do You Yahoo!? Get your free at yahoo.com address at http://mail.yahoo.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------------------------------ 013 X-Sender: disarm at mail.braenet.com.au X-Mailer: Windows Eudora Pro Version 3.0 (32) Date: Sat, 25 Dec 1999 11:54:12 +1100 To: aussie-weather at world.std.com From: Matt Smith [disarm at braenet.com.au] Subject: Re: aus-wx: Nick from Kerang - Looking good Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Heya Nick About time you got a camera!!! congratz :), just make sure you read up on how to use it thismorning, so your tornado/supercell shots turn out this arvo! ;) Matt Smith >Hey All > >Happy Christmas > >Woke this morning to the banging blinds, the light ENE >of last night has now freshened considerably. > >Took a look out the window and saw what every severe >weather watching hates "a full sky of cloud" > >So after a few mutterings to myself I went back to >bed. > >Got up at 9.30 and it was starting to look a lot more >promosing, the cloud had become scattered and some >sweet sun was breaking through. > >And now at 10.50 good breaks of blue are evident, the >temp has risen to 25. There is a line of congestous to >the south and a nice looking Cb is to the NNW. >Atomosphere appears primed for storm development. > >The fire weather briefing is a work of art, have a >read > >"A high pressure system south of Tasmania will move to >the Tasman Sea on Boxing >day while a low pressure trough deepens over Western >Victoria. The trough will >then move gradually eastwards across the state on >Monday. The passage of cold >front across southern Victoria and Tasmania on Tuesday >will reinforce a cool >fresh southwest to southerly airflow across the state. > >Today will be generally warm and humid with easterly >winds persisting, fresh >along the coast. Showers and thunderstorms are >expected today and are currently >occurring in the Mallee and northern Wimmera. Humidity >levels are generally >high. Estimates issued this morning look ok although >the LAL's in the Mallee >should be 2 instead of 1. A significant weather chart >will be issued shortly and >indicates thunderstortms possible in all parts of the >state and a severe >thunderstorm watch area is indicated in the northwest. >Sunday will be humid and warm with showers and >thunderstorms becoming more >widespread from the west and some locally heavy falls >are likely. Winds will be >mainly moderate to fresh east to northeasterly." > >Chrissie dinner is going to be a quick affair this >year :) > >Got the SLR and 6 rolls of film ready, will keep >everyone posted. > >Nick from Kerang (near swan hill) > > > > > >_________________________________________________________ >Do You Yahoo!? >Get your free at yahoo.com address at http://mail.yahoo.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------------------------------ 014 From: "Patrick Tobin" [patricktobin at ozemail.com.au] To: [aussie-weather at world.std.com] Subject: aus-wx: STA - A Happy Christmas Present Date: Sat, 25 Dec 1999 11:57:45 +1100 X-Mailer: Microsoft Outlook Express 4.72.3110.5 Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com015 Date: Fri, 24 Dec 1999 17:04:51 -0800 (PST) From: Nick Sykes [njsykes at yahoo.com] Subject: aus-wx: Kerang - Noon Update To: aussie-weather at world.std.com Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Mostly cloudy here now, Cu towers going up everywhere with the odd sunny break. Temp 24. Cb to the north with a rain curtain, very humid. Radar is showing cells popping up all over the SA border. Chrissie dinner will be served soon then off. Hoping for that sweet supercell Matt!!!! :) Nick _________________________________________________________ Do You Yahoo!? Get your free at yahoo.com address at http://mail.yahoo.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------------------------------ 016 Date: Sat, 25 Dec 1999 01:27:43 +0000 From: Les Crossan [les.crossan at virgin.net] Organization: Cosmic EuroCon - note all times in GMT X-Mailer: Mozilla 4.5 [en] (Win98; I) X-Accept-Language: en To: aus-wx [aussie-weather at world.std.com] Subject: aus-wx: Back for Christmas Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hi, Les from UK here, have I missed anything whilst I've been away???? +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 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------------------------------ 017 X-Sender: disarm at braenet.com.au (Unverified) X-Mailer: Windows Eudora Pro Version 3.0 (32) Date: Sat, 25 Dec 1999 13:36:52 +1100 To: aussie-weather at world.std.com From: Matt Smith [disarm at braenet.com.au] Subject: aus-wx: SA/VIC storms Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Storm in melbourne local radar in the red, near a place called "Warburton", certainly interesting watching these storms in Vic/SA move in a westerly/south westerly direction, i dont really think ive seen it before. Whoever goes out chasing, have a great one! BUREAU OF METEOROLOGY SOUTH AUSTRALIAN REGIONAL OFFICE SEVERE THUNDERSTORM ADVICE Issued at 12:15 pm on Saturday, 25 December 1999 For people in the Riverland, Murraylands, Upper and Lower South East, Mid North and Greater Adelaide and Mount Lofty Ranges districts. Scattered thunderstorms may cause localised very heavy rain in these districts during this afternoon. Very isolated severe wind gusts and small hail are also possible. +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 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------------------------------ 018 X-Sender: disarm at braenet.com.au (Unverified) X-Mailer: Windows Eudora Pro Version 3.0 (32) Date: Sat, 25 Dec 1999 16:44:12 +1100 To: aussie-weather at world.std.com From: Matt Smith [disarm at braenet.com.au] Subject: aus-wx: Melbourne Storm Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hi Everyone Storms are currently visable on the melbourne web cam, http://webcam.omni.net.au/ should be some interesting rainfall totals in SA, particularly near the Vic border/Adelaide suburbs from the storms. 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------------------------------ 019 X-Sender: disarm at braenet.com.au (Unverified) X-Mailer: Windows Eudora Pro Version 3.0 (32) Date: Sat, 25 Dec 1999 17:01:17 +1100 To: aussie-weather at world.std.com From: Matt Smith [disarm at braenet.com.au] Subject: aus-wx: Melbourne severe storm warning Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Sorry about the flood of emails, but im sure people would like to be kept up to date on these things.. :) BUREAU OF METEOROLOGY VICTORIAN REGIONAL OFFICE NEWS FLASH - FOR IMMEDIATE BROADCAST Severe Thunderstorm Warning for the western suburbs of Melbourne . Issued at 1624 on Saturday the 25th of December 1999 A severe thunderstorm has been observed west of Melbourne airport and is expected to move slowly southwest over the western suburbs during the next hour or so. Flash flooding is expected. This warning will be reviewed at 6pm and should not be issued after that 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------------------------------ 020 Date: Sat, 25 Dec 1999 17:11:38 +0930 From: Paul Mossman [paulmoss at tpgi.com.au] X-Mailer: Mozilla 4.08 [en] (Win98; I) To: aussie-weather at world.std.com Subject: Re: aus-wx: Melbourne severe storm warning Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Great stuff for those poor storm starved Vics. Here - a very merry wet xmas - Thundery monsoonal showers rolling in off the ocean - rainfall as follows: > 9am 24.12 - 28mm 9am - 9am 25.12 - 37mm 9am - 3pm 25.12 - 5 mm 3pm - present - 17mm at present more thunder and a heavy shower rolling in - seems like the monsoonal trough is getting inot gear & strengthening. Also Low that they are watching here - in the NE Gulf - only Low chance at this stage. Hope you had a great day. +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 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------------------------------ 021 X-Sender: paisley at mail.cobweb.com.au Date: Sat, 25 Dec 1999 18:59:17 +0930 To: aussie-weather at world.std.com From: Phil Bagust [paisley at cobweb.com.au] Subject: Re: aus-wx:Adelaide's Christmas day Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Well, it was always going to be a storm day here, with Cu popping up all over the place from very early in the morning. After Christmas dinner, I checked the radar at 2.00pm CST and it was obvious that east of the Mt Lofties was the place to be, but there was also activity on the Northern Adelaide plains. Because of the shorter distance and the flat terrain, I opted to chase to the latter hoping to be on the northern flank if any severe stuff caught up with me. So I drove north to the west of Gawler. Lovely H-bomb and flanking line to the NW. Didn't take a pic as it was right in the sun unfortunately. To the SE was very black. I got my reward with a lovely guster passing overhead. After that it was just light rain so I headed east over the Mt Lofties hoping to intercept the next cell head on. As it was the idea was right but the timing was wrong as I emerged on the Lofties eastern scarp just to the south and behind a gorgeous looking cell that ended up bringing quite bad flooding to the town of Eudunda. Nice base structure, inflow bands and a beautiful leticular cloud were my rewards - but there was no hope of chasing it from so far behind. All in all, not a bad day, no real severe weather, but some nice shots snapped, and it could have been so much better. What I really needed for Christmas was a laptop and mobile phone connection! Santa???? Godd chasing to all, especially in western Victoria! Cheers Phil 'Paisley' Bagust paisley at cobweb.com.au http://www.chariot.net.au/~paisley2 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 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------------------------------ 022 From: "Steve" [sselka at ozemail.com.au] To: "severeweather" [aussie-weather at world.std.com] Subject: aus-wx: Darwin Storm Cam Date: Sat, 25 Dec 1999 21:21:14 +1100 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 Happy Christmas to those of you who might get some action today.All very quiet and overcast (sc) in Canberra temp of 18 - with no sign of storms, rain, showers or anything else. Mind you with Christmas Day family obligations, one doesn't want it to get too interensting too soon,PatrickTOP PRIORITY FOR IMMEDIATE BROADCASTSEVERE THUNDERSTORM ADVICEBUREAU OF METEOROLOGYNEW SOUTH WALES REGIONAL OFFICEIssued at 1121 on Saturday the 25th of December 1999This advice affects people in the following weather districts:Upper and Lower WesternCentral West Plains, west of around Walgett, Warren, Condobolin
and WyalongRiverina, north of about Balranald, Hay and GriffithThunderstorms are already occurring across parts of the Advice area, and more storms are forecast
to develop during today. Some of these storms areexpected to bring very heavy
rainfall and localised flash flooding.023 Date: Sat, 25 Dec 1999 12:51:04 +0000 From: Les Crossan [les.crossan at virgin.net] Organization: Cosmic EuroCon - note all times in GMT X-Mailer: Mozilla 4.5 [en] (Win98; I) X-Accept-Language: en To: aussie-weather at world.std.com Subject: Re: aus-wx: Darwin Storm Cam Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com I don't know if it is fair dinkum,Steve EllangowanSteve wrote:
http://www.qantmnt.com/webcam/A bit dark, isn't it - did the webcam capture a CG or something????Les(UK)
Document: 991225.htm
Updated: 28 December 1999 |
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