Storm News
[Index][Aussie-Wx]
Australian Weather Mailing List Archives: 19th December 1998

    From                                           Subject
--------------------------------------------------------------------------------------
001 "Terry Bishop" [dymprog at mpx.com.au]            Hi All
002 Susan Puddifer [susanpud at sydney.healey.com.au  SE QLD Storms
003 Paul Graham [pgraham1 at mail.usyd.edu.au]        North Coast Storms...
004 Paul Graham [pgraham1 at mail.usyd.edu.au]        North Coast Storms...
005 Local_Court_Maclean at agd.nsw.gov.au             Severe Storm in Maclean / Yamba / Palmerston Areas Yesterday
006 steve baynham [bayns at nor.com.au]               storms
007 Don White [donwhite at ozemail.com.au]            North Coast storms
008 Ben Quinn [bodie at corplink.com.au]              Storms
009 "Anthony Cornelius" [cyclone at stealth.com.au]   Interesting + Promising Brisbane Soundings
010 steve baynham [bayns at nor.com.au]               webpage
011 Phil Bagust [mail.cobweb.com.au at redback.cobwe  the desperate folks in Adelaide
012 steve baynham [bayns at nor.com.au]               a question
013 "Kevin Phyland" [kjphyland at hotmail.com]        SE QLD Storms
014 Ben Quinn [bodie at corplink.com.au]              a question
015 "Anthony Cornelius" [cyclone at stealth.com.au]   Severe T'Storm Warning for SE QLD
016 "McDonald" [mcdonald at one.net.au]               Severe Advice S.A.
017 "Kevin Phyland" [kjphyland at hotmail.com]        Nature's Fury!
018 wbc at ozemail.com.au (Laurier Williams)          Non-meteorological Message from the Silent One
019 "Jimmy Deguara" [jimmyd at ozemail.com.au]        Forecast
020 "Jimmy Deguara" [jimmyd at ozemail.com.au]        Forecast
021 "James Chambers" [jamestorm at ozemail.com.au]    SE Qld cricket ball hail/weak storm chase
022 Susan Puddifer [susanpud at sydney.healey.com.au  Severe Storm in Maclean / Yamba / Palmerston
023 "Michael Thompson" [michaelt at ozemail.com.au]   Christmas Eve / Day may be interesting in NSW

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001

From: "Terry Bishop" [dymprog at mpx.com.au]
To: "Aussie-weather" [aussie-weather at world.std.com]
Subject: aussie-weather: Hi All
Date: Sat, 19 Dec 1998 02:22:03 +1100
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Hi all,
                Sorry, missing the last couple days due to personal probs.
Nothing to report . All boring in the Central West of NSW. Promising cloud
about 6.00 PM 18.00 Friday but blew away  again. Wish I was in SE Qld. Back
to standard type as requested. Sorry to anybody who had trouble reading
previous messages.

Terry
dymprog at mpx.com.au

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002

Date: Sat, 19 Dec 1998 08:13:01 +1100 (EST)
From: Susan Puddifer [susanpud at sydney.healey.com.au]
To: aussie-weather at world.std.com
Subject: Re: aussie-weather: SE QLD Storms
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com


Hi All,

Been hearing lots of reports on the North Coast storms unfortunatly was at
work all during the build up so missed all the good stuff off the net.
Any follow up info on damage etc heard it hit a 100 kilometre swathe
around Yamba

Susan



On Fri, 18 Dec 1998, Anthony Cornelius wrote:

> Hi all,
> 
> Well, today was certainly a mixture of excitement and anti-climax!  Here, I
> had about 6 storms, all pretty much sideswiped me!  All up, I've had about
> 3.5 to 4 hours of thunder (where thunder has been heard within 5minutes of
> the last rumble)  But only 0.5mm of rain - all gave some spits and a fresh
> breeze though.
> 
> Some severe thunderstorms did develop - the Sunshine Coast sustained some
> fallen trees and powerlines, with 10,000 homes blacked out - some minor roof
> damage to some houses as well.  But not much coverage - most was on this dam
> 'desert fox!'
> 
> Some storms still around Stanthorpe, but I'm beginning think that maybe it's
> too much to hope for a good storm unfortunately :(  Although stranger things
> have happened!
> 
> Anthony from Brisbane

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003

Date: Sat, 19 Dec 1998 08:21:53 +1100 (EST)
From: Paul Graham [pgraham1 at mail.usyd.edu.au]
To: Aussie Weather [aussie-weather at world.std.com]
Subject: aussie-weather: North Coast Storms...
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
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I have heard that on the radio this morning there has been some talk of
some very severe storms in northern NSW last night.
- Paul G.

----------------------------
Paul Graham
paul at marconi.mpce.mq.edu.au
----------------------------

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004

Date: Sat, 19 Dec 1998 08:24:29 +1100 (EST)
From: Paul Graham [pgraham1 at mail.usyd.edu.au]
To: Aussie Weather [aussie-weather at world.std.com]
Subject: Re: aussie-weather: North Coast Storms...
Reply-Receipt: pgraham1 at extro.ucc.su.oz.au
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Have a look at:
http://www.abc.net.au/news/98/12/19/981219_19.htm

----------------------------
Paul Graham
paul at marconi.mpce.mq.edu.au
----------------------------

On Sat, 19 Dec 1998, Paul Graham wrote:

> I have heard that on the radio this morning there has been some talk of
> some very severe storms in northern NSW last night.
> - Paul G.

--------------------------------------------------------------------------------------
005

From: Local_Court_Maclean at agd.nsw.gov.au
X-Lotus-Fromdomain: NSW_AG
To: aussie-weather at world.std.com
Date: Sat, 19 Dec 1998 10:47:29 +1000
Subject: aussie-weather: Severe Storm in Maclean / Yamba / Palmerston Areas Yesterday.
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com


This morning, the people of the Maclean, Palmerston & Yamaba areas awoke to
devastation. Suger cane growers were especially hardest hit with '00's
acres of sugar cane ready to be harvested flattened. What caused this? I
believe it was a Severe Supercell. And let me tell you the story of that
storm.........................

Friday 18.12.1998.

BOM issues severe storm advice (not warning though) that storms maybe
possible in several areas. I walk outside and see well - nothing. I curese
the BOM and walk back and get immersed in my work. At 3.45pm I check the
Satpics, and not that there was some development, but not explosive enough
to worry me. I again check the BOm warnings and they have maintained that
there will be a severe storm in several areas. I wonder if someone there is
not on crack or sumthin and go back to work. 5.00pm comes. I notice several
people sheltering in the CourtHouse porch. I lock up and walk outside.
Shit.................shit shit shit. To the S - SW was a massive squall
line. The leading edge of that squall line was cumuliform and "lipping"
over where I was then in Maclean. Damn it I forgot my camera. I jump in the
car, trying to outrace the squall line back to Yamba, some 18 kms to the
NE. As I do the line hits. Winds gutsing to 100 km/h push the car all over
the raod, extreme precipitation followed by periods of calm made visibility
reduced to about 10 - 15metres. I seemed then to get in front of the main
action. As I pass under the bridge over the Clarence river at the Pacific
Highway, the line cathes me again, and this time more intense. Trees were
swaying almost horizontally, branches smashing into my car and across the
road. Rain was hitting every window on the car. So far no hail......

I get onto Palmerston Island, and the storm intensified further. I was
punching the core of this beauty! (NOw Kids dont do this at
home................). The water from the sides of the road (its the
estuary of the river or lake or sumthin) looked like a force 11 gale!! The
spray was actually being whipped over the road, as bits of weed and stuff
were blown over the car!! Ligthining (CG) was smashing down around me, and
I feared for my life. I decided to keep going. It clamed a little as I
headed towards Yamba,but then I looked to my SE and saw a green / balck
"Barrel" of storm heading towards me. I rang Ken at the Sydney BOM severe
weather section advising him of the damgerous situation, and that there was
no radio warnings at all. The people of Yamba were about to be caught
totally unawares.

The "barrell" of cloud swirled around as winds reached maximum intensity of
about 165km/h (the BOM said that 66knots were recorded at Evans Head which
is about 30 km/h North and only received the side of the storm). I was core
punching this again, and I didnt realy like it. Extreme Torential rain
smashed against my windows, with the window wipers of high, I couldnt see 5
m. Great branches were flying across the road, palm trees were bent below
horizontal, and severe flash flooding had reduced streets to creeks &
streams. Then I heard it. The clunk, clunk clunk of hail. I speed up,
hoping to make it to saftey. I was talking to Ken at the severe weather
Section when bang, a golf ball size hail smashed into my window, cuasing it
to crack immediately. More started to fall, bouncing of the tar like rubber
balls. The only saving feature was that there was not a great lot. I made
it to my motel, and got out and ran upstairs to grab the camera. Then the
line hit again, and the wind howled and moaned. Trees snapped mid trunk,
water was whipped to a frenzy.Power went out. The wind moaned like a dying
man, then screamed as it intensified. I belive that it muts have gone close
to 170 km/h in a short burst, as when we were in Darwin, it sounded nothing
like this. Water was everywhere. Then as quick as it had come it was gone.
25 mins after the most intense storm I have ever experienced. I then went
for a drive and got some pics of the devastation. Trees down everywhere. NO
power.  Some roofs off. All the suger cane crops flattened like someone had
walked on them.

The looking to the west a 2nd squall line was coming! I quickly put some
more film in, and waited. It only produced moderate rain and spectacular cg
lightning.

Man was that a storm!'

I believe this baby developed between the 3pm satpic & 4.30pm with
explosive development. The atmos was perfect. 80 knot jetstream, high
humidity, high temps & plenty of instability!!  The reason I believe it was
a supercell was that it moved in a SW  - E - SE  arc, when the next one
moved in a W - SE direction.

Basic facts:    Winds gusting to about 170km/h (my guess)
           Golf Ball Hail
           Heavy - Extreme Precipitation
           Damage : guestimate in the vicinity of  $5,000,000 (awaiting
insurance company figures.)
           Severe localised Flooding (including the main street of Yamba,
the Petrol station, and the main road!)

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006

X-Sender: bayns at nornet.nor.com.au
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Date: Sat, 19 Dec 1998 10:11:46 +1000
To: aussie-weather at world.std.com
From: steve baynham [bayns at nor.com.au]
Subject: aussie-weather: storms
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com

way to go paul!!!
well, i had the chance to do the exact same thing last night at about 7pm.
i jumped in my car to head to work, and noticed the biggest mother hmmmm of
a storm:) could see plenty of lightning off in the distance as the sun set.
i knew it was gunna be a ripper. got to work and asked if i could start a
bit later so i could get some shots but he wouldn't let me:( so
disappointed when i hear customers say what excellent lightning there was.
we had brownouts all night at work. so next time i'm driving to work and i
see a storm comin, i'm just gunna keep on drivin!:p after i finished work,
i drove around for a while looking for highspots on the flatlands of the
gold coast, not that many to pick from. one good thing i discovered that
night is that the pacific fair carpark is open all night, so i went up
there and saw a very distant lightning storm way out west.
noticed there is some lightning off the coast of ballina on the energex
page. whats gunna happen with that?
steve

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007

Date: Sat, 19 Dec 1998 00:03:17 +1100
From: Don White [donwhite at ozemail.com.au]
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To: Aussie Weather [aussie-weather at world.std.com]
Subject: aussie-weather: North Coast storms
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com

Automatic rainfall recording in the area indicate that Lake Ainsworth
(at Lennox Head) had 62 mm between 1715 and 1815 hours (Eastern Standard
Time) yesterday, 61 mm of which fell 1715 to 1800 hrs.
Media reports indicate major water damage to roads and fences 20 km SW
of Kempsey.
This is confirned by AWS at Wittitrun, in the hills about 25 kms to SSW
of Kempsey  where 162 mm of rain was recorded in the hours from 2.09 pm
(Eastern Standard Time) yesterday.This is getting close to some of the
good all time falls and it will be interesting to see if there is any
further breakdown available. (Note the NSW record storm rain is 175 mm
in 30 minutes at Goonoo Goonoo south of Tamworth in an intense storm on
11 February 1992 followed by 174 mm in 40 minutes at Bonshaw on the
Q'land border NNW of Inverell on 11 November 1969
Yesterday's details from the Manly Hydrological network
Don White

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008

Date: Sat, 19 Dec 1998 11:09:12 +1100
From: Ben Quinn [bodie at corplink.com.au]
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To: aussie-weather at world.std.com
Subject: Re: aussie-weather: Storms
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com

Hey

Well it was an interesting day here in Redcliffe (North Brisbane) yesterday,
there was a quite large storm that passed to the NW of redcliffe and then went
up along the sunshine coast .. not before letting off litterally 100's of Cg's
along the NW beachfront of Redcliffe .. was realy great stuff.  Throughout the
whole day i prolly recieved 4 or 5 storms all up, with the one big one , and
the rest more thundery showers, although some great features on a couple.  The
forecast was updated earlier thismorning to a Thunderstorms thisafternoon,
although i have a feeling most of the action could be north of Brisbane, but
we'll see.  It realy starting to warm up here (11am) and looking O.K. to my
W/SW.  Hopefully some more action for Brisbane today! we certainly have had
our fair shair lately, i'm certainly not complaining :)  At this stage monday
looks like it could be a good day in Brisbane.

l8tr

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009

From: "Anthony Cornelius" [cyclone at stealth.com.au]
To: [aussie-weather at world.std.com]
Subject: aussie-weather: Interesting + Promising Brisbane Soundings
Date: Sat, 19 Dec 1998 12:12:46 +1000
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Hi all,

Here is Brisbane's soundings - very interesting indeed!!!!  Only problem is
on the skew-T plot, it does show two inversions, one at 1500-2000m which is
fairly strong and a small one at 6000m, if they get through these Brisbane
is going to have a big day!  Some accas in the sky this morning, still a
scattering of them now.  30.1C, DP of 20C now, some small cu scattered
around the sky - 1007hPa, here's hoping!


Cap Strength:              3.22 C
Lifted Index:             -5.39 C Risk: Severe thunderstorms probable
Lifted Index  at 300 mb:     -1.73 CLifted Index  at 700 mb:      0.61 C
Showalter Index:          -5.15 C Risk: Severe thunderstorms possible
Total Totals Index:       55.90 C Risk: Severe Thunderstorms probable
  Vertical Totals Index:  29.30 C  Cross Totals Index:     26.60 C
K Index:                  31.80   Risk: 60-80 % chance of thunderstorms
Sweat Index:             350.12   Risk: Showers and thunderstorms possible
Energy Index:             -3.06   Risk: Severe Thunderstorms probable
Parcel IndicesParcel: using 100 mb layerCAPE (B+):               690.74 J/kg
Max Up Vert Vel:          37.17 m/sConv Inhibition (B-):    157.81 J/kg
Cap Strength:              3.17 C
Lift Cond Lev (LCL):     911.28 mb =   866.09 m =  2841.47 ft
Lev Free Conv (LFC):     686.28 mb =  3259.19 m = 10692.74 ft
Equ Level (EL):          276.28 mb = 10060.42 m = 33006.22 ft
B at Equ Level:          679.43 J/kg
Max Parcel Lev (MPL):    196.28 mb = 12351.60 m = 40523.12 ftWind Parameters
Mean winds (0-6000m):            268.2 at   19.3 knts
Storm direction:                 298.2 at   14.4 knts
Shear (0-3000m)              pos:    4.9 neg:    0.4 tot:    5.2 10-3/s
Storm rel Dir Shear (0-3000m):     116.5 deg
Storm rel helicity (0-3000m) pos:  122.1 neg:  -11.1 tot:  111.0 m^2/s^2
                             ave:   37.0 10^-3 m/s^2 rel:   0.62
Storm rel vorticity (0-3000m) horiz:    7.5 stream:    4.7 10^-3/s
Energy-Hel index:          0.50Bulk Rich Number:          6.66
Bulk Shear:              103.69 m/s

Anthony

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010

X-Sender: bayns at nornet.nor.com.au
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Date: Sat, 19 Dec 1998 12:15:10 +1000
To: aussie-weather at world.std.com
From: steve baynham [bayns at nor.com.au]
Subject: aussie-weather: webpage
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com

hey all,
just added some more weather pictures to my page
http://www.angelfire.com/ok/gany/weather.html

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011

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Date: Sat, 19 Dec 1998 08:26:25 +0930
To: aussie-weather at world.std.com
From: Phil Bagust [mail.cobweb.com.au at redback.cobweb.com.au]
Subject: Re: aussie-weather: the desperate folks in Adelaide
Sender: aussie-weather-approval at world.std.com
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Well, well

I've been lurking in this list for over a month and during that time there
hasn't been a whif of *real* convection in Adelaide, just dry heat followed
by days of cool south easterlies and 'pancake' stratocumulus.

But low and behold, I wake up this morning to a humid 20 and a layer of
thick cirro stratus, but little cu popping up all over the place under it.
All this and a trough to come through early this evening.

One lives in hope....

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012

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Date: Sat, 19 Dec 1998 12:47:13 +1000
To: aussie-weather at world.std.com
From: steve baynham [bayns at nor.com.au]
Subject: aussie-weather: a question
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hey again,
whats the average distance a storm travels?

steve

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013

X-Originating-Ip: [203.25.186.111]
From: "Kevin Phyland" [kjphyland at hotmail.com]
To: aussie-weather at world.std.com
Subject: Re: aussie-weather: SE QLD Storms
Date: Fri, 18 Dec 1998 19:25:56 PST
Sender: aussie-weather-approval at world.std.com
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Hi every1,
Just logged on and read the stuff about the Northern Rivers storm.
My brother rang me this morning from Alstonville (just south of Ballina) 
and told me they had awesome storms last night. At 9 this morning the 
power was still out!
Hope somebody got some photos ('cos my brother didn't :( )
Kevin from Wycheproof.



>
>Hi All,
>
>Been hearing lots of reports on the North Coast storms unfortunatly was 
at
>work all during the build up so missed all the good stuff off the net.
>Any follow up info on damage etc heard it hit a 100 kilometre swathe
>around Yamba
>
>Susan

--------------------------------------------------------------------------------------
014

Date: Sat, 19 Dec 1998 13:25:30 +1100
From: Ben Quinn [bodie at corplink.com.au]
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To: aussie-weather at world.std.com
Subject: Re: aussie-weather: a question
Sender: aussie-weather-approval at world.std.com
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steve baynham wrote:

> hey again,
> whats the average distance a storm travels?
>
> steve
>

This is off the top of my head steve, but the average single cell storm
normally lasts around half an hour.  Multicellular storms can last many
hours, as new storms keep developing (eg. A squall line) and then you have
the Supercells, wich can last up to 3 hours or more.  I dont know of the
average distance a storm would travel, as it depends on the storm i guess
(eg. A severe single cell storm could move very rapidly, like 70 or 80 k's an
hour or so).  If you check out this URL it actualy has slides on the
different storm types
http://covis.atmos.uiuc.edu/guide/stormspotters/html/index2.html
You may find more information on that site somewhere

l8tr

--------------------------------------------------------------------------------------
015

From: "Anthony Cornelius" [cyclone at stealth.com.au]
To: [aussie-weather at world.std.com]
Subject: aussie-weather: Severe T'Storm Warning for SE QLD
Date: Sat, 19 Dec 1998 13:40:11 +1000
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TOP PRIORITYSEVERE THUNDERSTORM WARNING
Issued by the Bureau of Meteorology, Brisbane
At 1.30 pm on Saturday the 19th of December 1998For the Southeast Coast
District
Thunderstorms which formed over the eastern Downs are currently moving
eastwards
and are expected to move across to the coast throughout the afternoon.  Some
of
these storms maybe severe with possible large hail and strong wind gusts.
At 1.30 pm the largest thunderstorms were located southwest of Ipswich.
People are advised to secure outside items, move cars under cover and seek
shelter.The next warning will be issued at 2.30
**** NOT FOR BROADCAST AFTER 2.30pm  ****

--------------------------------------------------------------------------------------
016

From: "McDonald" [mcdonald at one.net.au]
To: [aussie-weather at world.std.com]
Subject: aussie-weather: Severe Advice S.A.
Date: Sat, 19 Dec 1998 15:50:52 +1100
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Hi All,

Keep hoping Adelaidians.

SEVERE THUNDERSTORM ADVICE
Bureau of Meteorology Adelaide
Issued at  1.00 pm on  Saturday, 19/12/98
For people in the West Coast district and in the Northwest Pastoral
district west of Woomera.

Severe winds and very heavy rain are possible with thunderstorms in
the above districts during this afternoon and evening.

Localised damage and flash flooding is possible and people are
advised to take precautions, such as to secure loose outside objects
and avoid flooded roads and watercourses

Melbourne is very boring at the moment.  I'm hoping this trough will get a
bit of a hurry along cause there is nothing here at the moment.

Andrew McDonald.

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017

X-Originating-Ip: [203.25.186.111]
From: "Kevin Phyland" [kjphyland at hotmail.com]
To: aussie-weather at world.std.com
Subject: aussie-weather: Nature's Fury!
Date: Fri, 18 Dec 1998 23:34:18 PST
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com

Hi every1,

Just noticed that National Geographic Channel has three hours of 
documentaries on Storm Chasers, Tornadoes and Severe storms! It's 
repeated from midnight tonight, at 6 a.m. tomorrow and again at noon 
tomorrow.
Get those videos going...

Kevin from Wycheproof.

--------------------------------------------------------------------------------------
018

From: wbc at ozemail.com.au (Laurier Williams)
To: aussie-weather at world.std.com
Subject: aussie-weather: Non-meteorological Message from the Silent One
Date: Sat, 19 Dec 1998 07:58:29 GMT
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Greetings all

Just a brief missive to explain my temporary disappearance from the
list. On Friday 11 Dec some scoundrel *stole* the internet gateway
server at work, and we will probably be minus a connection until early
January. In the meantime, my pre-Christmas workload and activities are
such that I'm rarely at home, where my other internet connection is! 

As a result, I'll continue to be off line, both for participating in
Aussie-wx and updating my web site until after Christmas, when I have
a week off and will be back online with a vengeance (and hopefully
lots of summer storms). 

In the meantime, Merry Christmas to all, and may 1999 be just as you
wish it to be.


-- 
Laurier Williams
Australian Weather Links and News
http://www.ozemail.com.au/~wbc/

--------------------------------------------------------------------------------------
019

From: "Jimmy Deguara" [jimmyd at ozemail.com.au]
To: [aussie-weather at world.std.com]
Subject: aussie-weather: Forecast
Date: Sat, 19 Dec 1998 19:46:07 +1100
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The forecast has gone boring unless you are willing to go in SE Qld. Anyone
wishing to go???

Jimmy
----------------------------------------------------------------------------
---------------
Jimmy Deguara from Schofields
e-mail:  jimmyd at ozemail.com.au
homepage with Michael Bath
http://www.australiansevereweather.simplenet.com/

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020

From: "Jimmy Deguara" [jimmyd at ozemail.com.au]
To: [aussie-weather at world.std.com]
Subject: Re: aussie-weather: Forecast
Date: Sat, 19 Dec 1998 19:56:09 +1100
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The area which should fire in the next few days is parallel with
Maryborough, very far up!!!! When I am on holidays, the action stops....

Jimmy
-----Original Message-----
>The forecast has gone boring unless you are willing to go in SE Qld. Anyone
>wishing to go???
>
>Jimmy

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021

From: "James Chambers" [jamestorm at ozemail.com.au]
To: "Aussie Weather" [aussie-weather at world.std.com]
Subject: aussie-weather: SE Qld cricket ball hail/weak storm chase
Date: Sat, 19 Dec 1998 22:20:53 +1000
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Hi all

Thunderstorms this afternoon which developed over the Eastern Darling Downs
were probably strongest where they first originated...
  From the BoM:
  WEATHER HIGHLIGHTS
  Severe thunderstorms were reported to the West of Brisbane this afternoon
with
  cricket ball size hail reported from the Gatton area.
This storm area moved over the Sunshine Coast with no severity at all
because of a general weakening trend.

With those storms moving north with the coastal trough some isolated weaker
convection was occurring south of the large storm area in the more stable
air.  Obviously there was still some cold air left over upstairs.  Just
before 4pm a friend and I decided to head towards Beaudesert in the hope of
finding something photogenic.  Travelling south down the Mt Lindsay Highway
, very occasional static on the AM radio started to increase just as I
noticed a weak anvil and moderate updraughts to the SW and south.
At Jimboomba, about 25km north of Beaudesert we stopped at a "grown up"
corner shop to survey the scene.  Some nice rain shafts and local lower
bases were evident with the storm to the SW which I believe originated
behind Warwick a couple of hours earlier.  This CB was linked to higher
based large cu extending to the east, probably south of Beaudesert.  The
sight of 3 CG strikes in quick succession told us to go see what it was
like.  Looking at the street directory, we decided to travel west on this
road which was supposed to then turn SSW.  Of course, the 3 year old
directory didn't predict a road closure right in the wrong spot after going
along for 20 mins in that direction.  So 40 mins was wasted, and the storm
had weakened.  Nevertheless, we got back onto the Highway and soon the rain
started falling about 6-8km south of Jimboomba, amongst the farmlands and
paddocks.  Knowing that not much else would be happening, we looked for the
biggest hill we could find (about 5m higher than the rest of the area!), and
parked the car and looked at the view.  With rain pelting down over the cow
paddocks and thunder rumbling overhead it made you feel alive!  Soon the sun
came out, and the area had a bright gold tinge to it - and there was the
brightest of bright rainbows to the east. I know - not much of a storm, but
its another side of chasing I guess.
That storm died very soon after, but the rainbow followed us back to
Brisbane.  Not a total bust :)
------------------------------------------------------
James Chambers
http://www.ozemail.com.au/~jamestorm/bristorm.html

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022

Date: Sun, 20 Dec 1998 09:59:22 +1100 (EST)
From: Susan Puddifer [susanpud at sydney.healey.com.au]
To: aussie-weather at world.std.com
Subject: Re: aussie-weather: Severe Storm in Maclean / Yamba / Palmerston
 Areas Yesterday.
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com

Hi All, 

Been off for a day so couldnt read this wonderful report until today.
Wonderful stuff and well written.

However I rang my mum who has lived in Maclean now for 80 years - her
response was 'ahh just a little storm - bit of wind thats all.  Seen it
all many times before - no big deal.  Probably be a few more like it
before new year.'  

And btw its not Palmerston its Palmers Island  (not being picky - just for
your info)

Susan




On Sat, 19 Dec 1998 Local_Court_Maclean at agd.nsw.gov.au wrote:

> 
> 
> This morning, the people of the Maclean, Palmerston & Yamaba areas awoke to
> devastation. Suger cane growers were especially hardest hit with '00's
> acres of sugar cane ready to be harvested flattened. What caused this? I
> believe it was a Severe Supercell. And let me tell you the story of that
> storm.........................
> 
> Friday 18.12.1998.
> 
> BOM issues severe storm advice (not warning though) that storms maybe
> possible in several areas. I walk outside and see well - nothing. I curese
> the BOM and walk back and get immersed in my work. At 3.45pm I check the
> Satpics, and not that there was some development, but not explosive enough
> to worry me. I again check the BOm warnings and they have maintained that
> there will be a severe storm in several areas. I wonder if someone there is
> not on crack or sumthin and go back to work. 5.00pm comes. I notice several
> people sheltering in the CourtHouse porch. I lock up and walk outside.
> Shit.................shit shit shit. To the S - SW was a massive squall
> line. The leading edge of that squall line was cumuliform and "lipping"
> over where I was then in Maclean. Damn it I forgot my camera. I jump in the
> car, trying to outrace the squall line back to Yamba, some 18 kms to the
> NE. As I do the line hits. Winds gutsing to 100 km/h push the car all over
> the raod, extreme precipitation followed by periods of calm made visibility
> reduced to about 10 - 15metres. I seemed then to get in front of the main
> action. As I pass under the bridge over the Clarence river at the Pacific
> Highway, the line cathes me again, and this time more intense. Trees were
> swaying almost horizontally, branches smashing into my car and across the
> road. Rain was hitting every window on the car. So far no hail......
> 
> I get onto Palmerston Island, and the storm intensified further. I was
> punching the core of this beauty! (NOw Kids dont do this at
> home................). The water from the sides of the road (its the
> estuary of the river or lake or sumthin) looked like a force 11 gale!! The
> spray was actually being whipped over the road, as bits of weed and stuff
> were blown over the car!! Ligthining (CG) was smashing down around me, and
> I feared for my life. I decided to keep going. It clamed a little as I
> headed towards Yamba,but then I looked to my SE and saw a green / balck
> "Barrel" of storm heading towards me. I rang Ken at the Sydney BOM severe
> weather section advising him of the damgerous situation, and that there was
> no radio warnings at all. The people of Yamba were about to be caught
> totally unawares.
> 
> The "barrell" of cloud swirled around as winds reached maximum intensity of
> about 165km/h (the BOM said that 66knots were recorded at Evans Head which
> is about 30 km/h North and only received the side of the storm). I was core
> punching this again, and I didnt realy like it. Extreme Torential rain
> smashed against my windows, with the window wipers of high, I couldnt see 5
> m. Great branches were flying across the road, palm trees were bent below
> horizontal, and severe flash flooding had reduced streets to creeks &
> streams. Then I heard it. The clunk, clunk clunk of hail. I speed up,
> hoping to make it to saftey. I was talking to Ken at the severe weather
> Section when bang, a golf ball size hail smashed into my window, cuasing it
> to crack immediately. More started to fall, bouncing of the tar like rubber
> balls. The only saving feature was that there was not a great lot. I made
> it to my motel, and got out and ran upstairs to grab the camera. Then the
> line hit again, and the wind howled and moaned. Trees snapped mid trunk,
> water was whipped to a frenzy.Power went out. The wind moaned like a dying
> man, then screamed as it intensified. I belive that it muts have gone close
> to 170 km/h in a short burst, as when we were in Darwin, it sounded nothing
> like this. Water was everywhere. Then as quick as it had come it was gone.
> 25 mins after the most intense storm I have ever experienced. I then went
> for a drive and got some pics of the devastation. Trees down everywhere. NO
> power.  Some roofs off. All the suger cane crops flattened like someone had
> walked on them.
> 
> The looking to the west a 2nd squall line was coming! I quickly put some
> more film in, and waited. It only produced moderate rain and spectacular cg
> lightning.
> 
> Man was that a storm!'
> 
> I believe this baby developed between the 3pm satpic & 4.30pm with
> explosive development. The atmos was perfect. 80 knot jetstream, high
> humidity, high temps & plenty of instability!!  The reason I believe it was
> a supercell was that it moved in a SW  - E - SE  arc, when the next one
> moved in a W - SE direction.
> 
> Basic facts:    Winds gusting to about 170km/h (my guess)
>            Golf Ball Hail
>            Heavy - Extreme Precipitation
>            Damage : guestimate in the vicinity of  $5,000,000 (awaiting
> insurance company figures.)
>            Severe localised Flooding (including the main street of Yamba,
> the Petrol station, and the main road!)

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023

From: "Michael Thompson" [michaelt at ozemail.com.au]
To: [aussie-weather at world.std.com]
Subject: aussie-weather: Christmas Eve / Day may be interesting in NSW
Date: Sat, 19 Dec 1998 20:33:20 +1100
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First a disclaimer - we are looking 144 hours ahead and models tend to be
inaccurate that far advanced.

Thursday evening sees thunderstorm activity over southern NSW, there is also
some divergence of upper winds that may make it interesting into Christmas
Day.



Michael Thompson
http://thunder.simplenet.com

Document: 981219.htm
Updated: 25th February, 1999

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