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Australian Weather Mailing List Archives: 30th December 1998 |
From Subject -------------------------------------------------------------------------------------- 001 "Grant Boyden" [boyden at zeta.org.au] Sydney 002 Paul_Mossman at agd.nsw.gov.au Sydney 003 "Grant Boyden" [boyden at zeta.org.au] Sydney 004 Paul_Mossman at agd.nsw.gov.au Media Communication of Severe Thunderstorms. 005 Jacob [jacob at iinet.net.au] Perth Storms 006 Paul_Mossman at agd.nsw.gov.au Perth Storms 007 "2KY Racing Radio" [boyden at zeta.org.au] Media Communication Of Servere Thunderstorms 008 Blair Trewin [blair at met.Unimelb.EDU.AU] Wilsons Prom gust equ 009 Paul_Mossman at agd.nsw.gov.au Media Role in Severe Thunderstorm Information Distribution. 010 Paul_Mossman at agd.nsw.gov.au Media Role in Severe Thunderstorm Information 011 steve baynham [bayns at nor.com.au] gold coast storm & media 012 "Terry Bishop" [dymprog at mpx.com.au] No action at Orange. 013 mildad [mildad at one.net.au] (no subject) 014 Ben Quinn [bodie at corplink.com.au] Queensland weather 015 Ben Quinn [bodie at corplink.com.au] Great Page 016 Michael Bath [mbath at ozemail.com.au] storm chase 30/12/98 017 Paul Graham [pgraham1 at mail.usyd.edu.au] Sydney to Hobart Disaster... 018 Andrew Puddifer [andypudd at backmeup.net.au] Sydney to Hobart Disaster... -------------------------------------------------------------------------------------- 001 From: "Grant Boyden" [boyden at zeta.org.au] To: "Aussie Weather" [aussie-weather at world.std.com] Subject: aussie-weather: Sydney Date: Wed, 30 Dec 1998 10:38:46 +1100 X-Msmail-Priority: Normal X-Mailer: Microsoft Internet Mail 4.70.1161 Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Good Morning all, The lastest from Sydney is 6-7 oct. of CU cloud. temp. 26% Hum65% barr: jumped up to 1014 10:30am How are things where you are. ****************************************** Grant Boyden -------------------------------------------------------------------------------------- 002 From: Paul_Mossman at agd.nsw.gov.au X-Lotus-Fromdomain: NSW_AG To: aussie-weather at world.std.com Date: Wed, 30 Dec 1998 10:49:14 +1000 Subject: Re: aussie-weather: Sydney Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Howdy Grant. Taree is currently very warm, humid, with Some low level cloud. Looks like good weather for a storm but i doubit it! (man Im starting to get cynical!!) Paul from Taree -------------------------------------------------------------------------------------- 003 From: "Grant Boyden" [boyden at zeta.org.au] To: [aussie-weather at world.std.com] Subject: Re: aussie-weather: Sydney Date: Wed, 30 Dec 1998 11:13:24 +1100 X-Msmail-Priority: Normal X-Mailer: Microsoft Internet Mail 4.70.1161 Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com ---------- > From: Paul_Mossman at agd.nsw.gov.au > To: aussie-weather at world.std.com > Subject: Re: aussie-weather: Sydney > Date: Wednesday, 30 December 1998 11:49 > > > > Howdy Grant. > > Taree is currently very warm, humid, with Some low level cloud. Looks like > good weather for a storm but i doubit it! (man Im starting to get > cynical!!) > > Paul from Taree > > Top of the morning to u. Yeah, funny patern we are in at the moment. the days look like we should get a storm but!!!!! no result. I bet if we didn't want them they would come 3 or 4 a day. ****************************************** Grant Boyden -------------------------------------------------------------------------------------- 004 From: Paul_Mossman at agd.nsw.gov.au X-Lotus-Fromdomain: NSW_AG To: aussie-weather at world.std.com Date: Wed, 30 Dec 1998 11:31:50 +1000 Subject: aussie-weather: Media Communication of Severe Thunderstorms. Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com For some time this has been worrying me. It was all the more evident when I was in Darwin and saw how the media handled the TC Thelma. A bulletin was on every hour, describing its location with recent satpics, radar (on differing channels) and a constant warning tone & flashing letters. Updated Bulletins from the BOm every 3 hours provided the necessary info & warnings. It leads me to this:- with all the current devastation from severe storms in Australia, and my recent experience with what I believe was a mesocyclonic Supercell - the warning system is totally inadequate. And its not the BOms fault either. The local radio stations in the Yamba/Ballina/Lismore areas DID NOT EVEN mention the weather let alone the severe storm warnings that were issued (I was listening to the heat Fm station.) This caused many people to be caught totally unawares, especially regarding the fact that the storm came from literally "nowhere" and caused such devastation & loss. I just heard again an advertisement for the natural disaster warning tone on the radio, advising people if they hear that then there is going to be a urgent message which they need to listen to? Why is this not being used for Severe Storm warnings? Indeed the North Coast storms possibly caused more damage then the Cat 5 TC Thlema did, yet NO warnings were received by most of the population that were effected! It is amazing that no real issues have yet been raised by those most effected inc farmers with regards to these warning systems. I realise that some people don't want to panic people unnecessarily or become too "Americanised" BUT peoples safety should be paramount to the adage "she'll be right mate!" Certainly If my property had been damage due to inadequate warning, I would be causing some stir. Now I realise that sometimes even warnings are not going to stop property damage, BUT will stop loss of life (hopefully). Maybe this is something we as an Association can change. I am going to try and approach NBN ( a local TV station) with regards to implementing this, and what their thoughts are (considering that they cover a large area of affected places inc NW Slopes, NE, etc.) Hopefully some of the BOM guys/gals are listening and I would appreciate their comments esp. if this Assoc can be of assistance to them. While I am raising some contentious issues, how about the weekend weather services! Are they not shit! What a load of crap (not the BOMs - the media's). The last 4 days of the holiday weekend all we have had is Sunny - no outlooks, no District forecasts, no anything! Not even a satpic! Crap crap crap................. Anyways, appreciate all your thoughts. Regards, Paul. -------------------------------------------------------------------------------------- 005 X-Sender: jacob at iinet.net.au X-Mailer: Windows Eudora Light Version 3.0.1 (32) Date: Wed, 30 Dec 1998 10:21:15 +0800 To: aussie-weather at world.std.com From: Jacob [jacob at iinet.net.au] Subject: aussie-weather: Perth Storms Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Quite hot in Perth this morning, its 10am, the current temp is 33.9C, we've got about 6/8 cloud cover right now with the chance of some thunderstorms today. FORECAST FOR METROPOLITAN AREA Issued at 0835 hours on Wednesday, 30/12/98 ISSUED BY THE BUREAU OF METEOROLOGY PERTH FOR TODAY AND TONIGHT. The temperature at 8:30am was 28.5 degrees Celsius. PERTH AND METROPOLITAN: Hot with a shower or two and the risk of a thunderstorm. E'ly winds and a mid afternoon sea breeze. Squalls possible near thunderstorms. MAX 37. FIRE DANGER: Coastal Plain: Very High. Hills : Very High. -------------------------------------------------------------------------------------- 006 From: Paul_Mossman at agd.nsw.gov.au X-Lotus-Fromdomain: NSW_AG To: aussie-weather at world.std.com Date: Wed, 30 Dec 1998 14:07:18 +1000 Subject: Re: aussie-weather: Perth Storms Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Howdy jacob! Its 31c here with 70% humidity, low level cu with some vertical development now. The BOm says chance of arvo showers, hopefully it may develop to soemthing more. -------------------------------------------------------------------------------------- 007 From: "2KY Racing Radio" [boyden at zeta.org.au] To: [aussie-weather at world.std.com] Subject: aussie-weather: Media Communication Of Servere Thunderstorms Date: Wed, 30 Dec 1998 15:13:28 +1100 X-Msmail-Priority: Normal X-Mailer: Microsoft Outlook Express 4.72.2106.4 X-Mimeole: Produced By Microsoft MimeOLE V4.72.2106.4 X-Mime-Autoconverted: from 8bit to quoted-printable by godzilla.zeta.org.au id PAA02230 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 PAA28048 Hello all, Let me start off by saying that these views do not reflect the management or staff here at 2KY, just my own. Paul today posted a question about why the Media are so slack in broadcasting information on storms. Some of his comments were well thought out and very true except for blaming the media. While I don�t claim or want to be a spokesperson for the media on this list I feel I can add some information to those that don�t have a connection with media agencies. I have been a member of the media for around 7 years now, in that time I have taken up roles in Announcing, Producing and News reading. I can recall once reading a weather bulletin at 12 noon that read, �A fine, warm to very warm sunny day with the chance of an afternoon shower.� That read was issued by the BoM at 0700 and was taken from our AAP News service. At the time it was the most up to date weather that was on the computer. The only problem with the read was it had been raining heavy from around 8am on. While I could look out the window and see that the read was wrong, by law I have to read exactly what the BoM say in their read. That is part of the charter radio stations undertake as part of getting a broadcasting licence. The station I work for, 2KY have AAP and our own mini weather station. There are stations around Australia that do not have AAP nor do they have a newsroom. Most country stations take news from Capital City radio and add their own news on at the end. A junior or some one usually writes the news they add. It is almost imposable for the BoM to predicted weather with 100% accuracy, due to the nature of the beast. If that statement is true then how can a new recruit to the broadcasting industry that would like to be a �D.J.�s� tell people what a storm cell is going to do. The answer, and were I think Paul lost it is, for the BoM to make radar images of storms FREE on the net for not only radio stations but, all internet users. Radio stations will not pay the $600 required per year to have internet access to the BoM radar for storms that only effect Sydney one month a year and cause major damage once every couple. The BoM get a very fair run, in my opinion at 2KY. Due to the fact that we broadcast across NSW when a notice on AAP comes in we broadcast it. Now, whether the reports are slowed down, by AAP or the BoM, I do not know, however, when we get them it�s usually to late. I know my views may not make me very popular on this group as most of you either have a good working relationship with, or at least know someone that works for the BoM, but, they are honest based on my experiences. I must say however, that these problems are based not on the good-hearted people that work at the BoM but by government involvement. I feel what Paul was trying to point out was 110% correct. This is cost lives and money and it has to stop. The point he made about the Darwin cost and the North cost coast tells you a story. The media a gooses that have good voices and no brains, If the data comes from the BoM they will broadcast it. If it doesn�t, please don�t ask them to try to make it up, that would be very painful. I may be wrong. If so please write to me and tell me your view at boyden at zeta.org.au Phew! That was a load off my mind. Paul, Thanks for posting such a thought provoking comment. I really enjoyed thinking about it. Grant Boyden boyden at zeta.org.au -------------------------------------------------------------------------------------- 008 From: Blair Trewin [blair at met.Unimelb.EDU.AU] Subject: aussie-weather: Wilsons Prom gust equ To: aussie-weather at world.std.com (Aussie Weather) Date: Wed, 30 Dec 1998 15:17:59 +1100 (EST) X-Mailer: ELM [version 2.4 PL23] Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com As part of the consequences of the low which created so much havoc in Bass Strait, at 0900 on 27 December Wilsons Promontory recorded a mean wind of 145 km/h/78 knots. This equals the highest in the digital record for this site (set at 1500 on 29 November 1996). This may not quite be what it seems, as there had been no observation in excess of 111 km/h prior to 1988, which makes me think that there was a site or instrument change (or both). As mentioned earlier, apparently gusts were being reported at the time of 92 knots/170 km/h. Unfortunately the Prom doesn't report the maximum gust for the day in near real-time, so we'll need to wait until the December field book comes in (probably early February) to find out the actual maximum gust. I'll see what other information I can dig up on this storm, although I was away for the period 24-29 December so I don't have much information on how the models were behaving, for example. Blair Trewin -------------------------------------------------------------------------------------- 009 From: Paul_Mossman at agd.nsw.gov.au X-Lotus-Fromdomain: NSW_AG To: aussie-weather at world.std.com Date: Wed, 30 Dec 1998 15:48:45 +1000 Subject: aussie-weather: Media Role in Severe Thunderstorm Information Distribution. Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Thanx Grant for the medias point of view, and no I am not offended by any comment you make. I wish to make this comment though. Somewhere there is a breakdown of communication. Maybe it si the BOM for sloppy distribution of information, maybe it is the Media for "brainless" DJ's who read out whatever is put in front of them. BUT that doesnt remove the necessity for accurate, timely & informative warning systems to be introduced. We are extremely lucky here in Australia that we dont suffer more deaths due to severe weather activity (whether it be storm, Cyclonic lows washing sailors away etc..........) What the problem is how the information is distributed. Sure, the BOM has a major blame in that area:- They are now restricting what access they give to the taxpayers for information. This is where we need to start putting weight to free up this information. Whilst I have regard to economies of information (ie the cost of distributing that information) anyone with a good client service background would know that you would never let a FEE stand in the way of excellent client service - this is what the BOM are doing. NOW BOM people dont get me wrong - its the CEO & Govt ideas to make the BOM a "profit" driven organisation - but at what costs? I would love to see what the Stats where for the Internt Open Day back in November! I bet they are already fee bound (whereby the BOM can use as proof that the fee system is going to work based on interest showed)............unfortunately. How the BOm can justify making a profit from that will always be beyond me......I suppose the justification is "But it costs money to keep up with technology! Oh well........ I still say that my experience shook me to the core, and who played what role would fade into insignifance if people had died.....thats what we need to remember. Education, Information NOT devastation! Paul. -------------------------------------------------------------------------------------- 010 From: Paul_Mossman at agd.nsw.gov.au X-Lotus-Fromdomain: NSW_AG To: aussie-weather at world.std.com Date: Wed, 30 Dec 1998 15:56:57 +1000 Subject: Re: aussie-weather: Media Role in Severe Thunderstorm Information Distribution. Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com I would really like to hear from Mark hardy on this issue, since he has background in both BOM & private enterprise and as a star boy on the Austar mag! PS Remember the Weather Channel starts 4.1.199 Paul. -------------------------------------------------------------------------------------- 011 X-Sender: bayns at nornet.nor.com.au X-Mailer: Windows Eudora Light Version 3.0.1 (32) Date: Wed, 30 Dec 1998 15:13:42 +1000 To: aussie-weather at world.std.com From: steve baynham [bayns at nor.com.au] Subject: aussie-weather: gold coast storm & media Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com hey all, have enjoyed the last few emails about the media and weather warnings. the easiest and most effective way of mending that problem for the moment is certainly the free access to the radar. anyway, judging by the lightning tracker, there is a storm forming to the west of us. has just come up in the last 10 - 20 minutes. gee, it would be nice if it comes east a bit more. ciao steve -------------------------------------------------------------------------------------- 012 From: "Terry Bishop" [dymprog at mpx.com.au] To: "Aussie-weather" [aussie-weather at world.std.com] Subject: aussie-weather: No action at Orange. Date: Wed, 30 Dec 1998 19:58:54 +1100 X-Msmail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2212 (4.71.2419.0) X-Mimeole: Produced By Microsoft MimeOLE V4.72.3110.3 Importance: Normal Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hi All, Firstly a G'day to Paul Mosman. I will be good to be able to keep up to date with Taree weather. My parents live at Old Bar and my brother lives in Taree. Boring at Orange at the present time. No cloud at all. At the present time 7.50pm Temp 25 Bar 1025 & Steady Hum. 15. All the action seems to be in North Qld in the Gulf area with the depression causing major rains with the possibility of developing into a cyclone. Have to watch it closely. Terry -------------------------------------------------------------------------------------- 013 Subject: Re: aussie-weather: gold coast storm & media Date: Wed, 30 Dec 98 20:02:40 +1000 X-Sender: mildad at mail.one.net.au X-Mailer: Claris Emailer 1.1 From: mildad [mildad at one.net.au] To: "aussie-weather" [aussie-weather at world.std.com] Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com This has been a hot topic on the mailing list. Although I would love to have free radar, for the purpose of storm chasing, I cant see that it will in any way solve the problem of timely dissemination of advisories and warnings to the public. The BoM meteorologists are the experts at interpreting radar data etc and they're the only ones who really need it for that purpose ( mind you for my own selfish reasons I wish it was free). Also, using their website, I have found the Sydney BoM severe thunderstorm advisory/warning products to be very good so far as NSW is concerned. I strongly believe, and I know it's a generalisation, that the media are largely to blame. If I can access this info from my computer before the event why cant the media gain access to it?. I listen to radio frequently when storms are imminent or warnings are out but rarely have I heard the warnings I see on my computer broadcast as a top priority as the BoM instructs. I must say that some radio stations are much better than others though. I think all this just stems from a general lack of community awareness. This is understandable since, although major centres such as Sydney an Brisbane are quite often affected by severe storms, even in those cities, most of the people wont have experienced anything like the devastation the relative few who did as seen on the evening news. I find it amazing how 'storm aware' my friends from Turramurra/Wahroonga on the north shore of Sydney are after the 1991 storm compared to those in other parts of Sydney who would never have experienced anything like that storm. Lets face it the odds of the most damaging part of such a damaging thunderstorm moving through your own backyard is not that great, probably even if you lived in Oklahoma City. For this reason it is hard to imagine ( and not that i'd want to ) a severe thunderstorm event doing for thunderstorms what Cyclone Tracey did for cyclones and the natural hazard posed by severe thunderstorms will always be underestimated by most. Perhaps if there were more members of the media, such as Grant, who had an interest in severe weather then dissemination of top priority weather information would not be such an issue. As a final comment, having said that the BoM advisory product for NSW is good, I think a warning service would be useful for the whole state or at least in recognised severe thunderstorm hotspots. Areas such as the northern tablelands, northwest slopes and northcoast are under so many severe storm advisories during the average storm season that they probably are taken with a grain of salt by people there. A warning product would be very useful here to alert people of a dangerous situation in their immediate vicinity so that people, except for crazy storm chasers [Paul:)], would have time to take cover. Regards David -------------------------------------------------------------------------------------- 014 Date: Wed, 30 Dec 1998 19:40:39 +1100 From: Ben Quinn [bodie at corplink.com.au] X-Mailer: Mozilla 4.04 [en] (Win95; I) To: aussie-weather at world.std.com Subject: Re: aussie-weather: Queensland weather Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hey, Ben from Brisbane here It looks like it could be a very interesting couple of days for Queensland, there is an amplifying upper level trough in the west of the state that should dump some heavy rain in western parts in the next couple of days .. BOM seems to think it will weaken before it reaches the coast (We also have SE'rs forecast for brisbane from tomorrow onwards :( ) .. For those that havn't already .. check out the Notes on the Weather for Queensland (http://www.bom.gov.au/cgi-bin/wrap_fwo.pl?IDF00Q01.txt) .. now if that all happens the way it's forecast too , then i'll be very surprised. Was hoping for some storms in Brisbane today, but cloud cover killed any chance of that, although there were some weak cells to the west thisafternoon with a bit of thunder. -------------------------------------------------------------------------------------- 015 Date: Wed, 30 Dec 1998 19:58:36 +1100 From: Ben Quinn [bodie at corplink.com.au] X-Mailer: Mozilla 4.04 [en] (Win95; I) To: aussie-weather at world.std.com Subject: Re: aussie-weather: Great Page Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hey Ben from Brisbane here I HIGHLY recomend you guys visit this page, it has some great tips on forecasting severe weather/storms http://www.met.tamu.edu/class/Metr475/comap1.html#guidance in particular, this section: http://www.met.tamu.edu/class/Metr475/imglab14/outlook.gif Some realy great stuff on this page, if anyone has any questions about anything on there dont hesitate to email me at Bodie at corplink.com.au or better still you can go to www.nemas.net , and in the education section there is a link called "ask nemas". -------------------------------------------------------------------------------------- 016 X-Sender: mbath at ozemail.com.au X-Mailer: QUALCOMM Windows Eudora Light Version 3.0.6 (32) Date: Wed, 30 Dec 1998 21:14:56 +1100 To: aussie-weather at world.std.com From: Michael Bath [mbath at ozemail.com.au] Subject: aussie-weather: storm chase 30/12/98 Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Date: Wednesday 30/12/98 Location: Northern Rivers district of NSW Chasers: Michael Bath and John Graham Distance: approx 375km The Lifted Index had looked slightly promising for the eastern Northern Tablelands for two days with -3 to -4 featuring on most of the forecast data. However the 98122912z data was less promising with only and broad area of -2 for most of the target forecast area for 98123003z & 06z (2-5pm local) - Stanthorpe in QLD to Tenterfield in NSW. Lower LIs were forecast for areas further north but this was too far to chase. Another problem that was only apparent on the day was an extensive cloud band edging east-south-eastwards into northern NSW. I decided to chase as it looked to be the only likely day for any activity in the remaining time I had left in Ballina, and John was looking forward to his first chase. We set out at 10.45am and headed west along the Bruxner Highway through Lismore, Casino and then stopping at the lookout at Mallanganee (about 100km west of Ballina) at noon. Extensive patchy cirrostratus and small clumps of weakish congestus were dominating the sky. It was quite hazy and warm and a light E wind was blowing. It was hard to know what to do at this stage: head to Tenterfield (the initial target area) another 1.25 hours to the west or stay put and see if anything started to happen closer. We stayed where we were as the lookout had shade and an excellent 360 degree view, and activity on the tablelands looked less likely as the cirrostratus thickened in that area. Also, it was sunny further south away from the cloud band and congestus was occurring there too. By 1pm John spotted what appeared to be cumulonimbus. From the compass and its apparent distance I suggested that it may be close to the coast east of Grafton, about 150km from where we were. We headed back east to Casino (40km distance) as the best road south is from there. We stopped for some lunch and contacted Jimmy for some data. Fortunately he was home and on the net and provided us with valuable info that shower activity was occurring NW of Coffs Harbour - further west of where I had thought but better for intercepting. We headed south along the Summerland Way towards Grafton, a 100km drive on a very good road with very little traffic (except for one cop that nearly got us on a blind sweeping crest - fortunately it was the moment we got the best view of the storm and immediately braked for photos!). By Whiporie half way along, we could see beautiful towering congestus and a maturing storm cell. It's features became spectacular with a nice shearing anvil and boiling cumulus on the NW flank. I thought the activity would continue on the NW side, however it quickly bacame apparent that the next updraft was forming on the N-NE side and it soon obscured the first cell behind it. We reached Junction Hill (and tried to find the radar installation for a look, but could not) as this cell matured to the SW of Grafton. It seemed to have weakened a little at this stage (~3pm). I decided to continue towards the storm. Static had picked up on the radio with lightning occurring every second or more. We drove through Grafton then headed west on the Glen Innes road (Gwydir Hwy) before turning SW on the Dalmorton/Buccarumbi road. Unfortunately this took us into mainly forested areas and obscured our view though the road was heading exactly the right direction. We briefly saw and photographed a lowered base on the NW flank and very heavy preciptation in the valleys ahead. As we did not know if this road was just forest all the way, we turned around and headed back towards the Gwydir Hwy. The storm virtually collapsed at this time (~3.45pm) so it was no great loss to not continue towards it (and further from home). A weak SE change along the coast was quickly delivering a horrible load of stratocumulus so the chase was ended at this time and we headed back to Ballina along the Pacific Hwy. It would have been nice for more activity, but we did get to what appears to be the only storm anywhere in the region (or state?) this day, so the chase was successful in this regard. It also gave us the opportunity to survey many roads and vantage points in the district from which future chases will make use of. Michael (on holidays in Ballina, NSW) *==========================================================* Michael Bath Oakhurst, Sydney mbath at ozemail.com.au Australian Severe Weather http://australiansevereweather.simplenet.com/ *==========================================================* -------------------------------------------------------------------------------------- 017 Date: Wed, 30 Dec 1998 21:50:53 +1100 (EST) From: Paul Graham [pgraham1 at mail.usyd.edu.au] To: Aussie Weather [aussie-weather at world.std.com] Subject: aussie-weather: Sydney to Hobart Disaster... Reply-Receipt: pgraham1 at extro.ucc.su.oz.au Reply-Read: pgraham1 at mail.usyd.edu.au Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hi everyone, I am surprised not much more has been said by people on this list (apart from Laurier and Blair) about the recent severe east coast low (I presume that the media reports are correct since I haven't yet seen the MSL charts - for it to be a true east coast low it must spend some of its life tracking down the coast) that claimed the lives of some competitors in the Sydney to Hobart Yacht Race. This evening's SBS news headline told of an inadequacy of the weather forecast for the race. However, the Sydney Morning Herald featured a report in which a spokesman for the Bureau defended the warning of 55 Knot winds. He said that the value of 55 Knots was just an average but the wind could gust up to 30% more than this value. I remember, some time ago, reading a report on east coast lows while at the Bureau. In it, the author recommended that more attention be given to their potential destrutiveness since they are in many ways similar to tropical cyclones. Some even present a classic eye, associated with TC's, on satellite pictures. The main problem with forecasting east coast lows is that they can develop very rapidly to reach maximum intensity. Although in this case it was mainly the Sydney to Hobart competitors who were affected, it serves to highlight just how destructive a mid-lattitude cyclone can be - in this case roughly equivalent to a C1 - C2 tropical cyclone. Perhaps if we named such systems they would receive more attention. The problem is that they are usually not as long lived and as long threatening to coastal regions as their tropical cousins for which names are given. - Paul G. ---------------------------- Paul Graham paul at marconi.mpce.mq.edu.au ---------------------------- -------------------------------------------------------------------------------------- 018 Date: Wed, 30 Dec 1998 22:14:49 +1100 From: Andrew Puddifer [andypudd at backmeup.net.au] X-Mailer: Mozilla 4.05 (Macintosh; I; PPC) To: aussie-weather at world.std.com Subject: Re: aussie-weather: Sydney to Hobart Disaster... Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hi Paul, Just briefly, could you explain why these east coast lows develop so rapidly? Are they a year round occurence, or are they more seasonal? Regards, Andrew.
Document: 981230.htm
Updated: 25th February, 1999 |
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