X-Sender: carls at ford.ace-net.com.au
Date: Mon, 11 Sep 2000 23:56:15 +1000
To: Aussie Weather List <aussie-weather at world.std.com>
From: Carl Smith <carls at ace-net.com.au>
Subject: aus-wx: Sydney Olympics astrometeorological forecasts update
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com

Hi All.

The Astrometerological Forecasts for the Sydney Olympics webpage at
http://www.ace-net.com.au/~carls/Olympics.html has now been
updated with the contributions from Anonomous Person via Ken Ring, Carolyn
Egan, and Ken Paone - the date/time header off each email is there as well
so you can see the time it was sent.

I have also extracted key points from the forecasts and arranged them in
daily paragraphs.

Be interested to see how accurate they prove to be.

Regards,
Carl.


 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com
 with "unsubscribe aussie-weather your_email_address" in the body of your
 message.
 -----------------------jacob at iinet.net.au------------------------------
From: "bussie" <bussie at netc.net.au>
To: <aussie-weather at world.std.com>
Subject: Re: aus-wx: Tornado: NE Victoria
Date: Tue, 12 Sep 2000 06:48:12 +1000
X-Mailer: Microsoft Outlook Express 5.50.4133.2400
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com

How stiff's that. You were a stones throw away.

Bussy

----- Original Message -----
From: "clyve herbert" <mesof5 at iprimus.com.au>
To: <aussie-weather at world.std.com>
Sent: Monday, September 11, 2000 9:23 PM
Subject: Re: aus-wx: Tornado: NE Victoria


> Hi Bussy.
> You wont believe it but I drove past the Malawa turn off heading back to
> Geelong yesterday and almost went that way instead of the Alpine way,
> although I ended up at Beechworth and some friendly person in  a gift shop
> showed me his collection of photos of the great snow storm they had in
> May.Regards Clyve Herbert.
> ----- Original Message -----
> From: bussie <bussie at netc.net.au>
> To: <aussie-weather at world.std.com>
> Sent: Monday, September 11, 2000 6:51 AM
> Subject: Re: aus-wx: Tornado: NE Victoria
>
>
> > Anybody get this on radar or something? Would like to see it.
> >
> > Bussy
> >
> > ----- Original Message -----
> > From: "Jimmy Deguara" <jdeguara at ihug.com.au>
> > To: <aussie-weather at world.std.com>
> > Sent: Sunday, September 10, 2000 8:30 PM
> > Subject: Re: aus-wx: Tornado: NE Victoria
> >
> >
> > > Sorry if I have been ignorant had it been mentioned, but what was the
> time
> > > when the tornado hit? I am trying to narrow down the storm that did it
> but
> > > I think I know which one. If it was the one I was thinking of, then I
> can
> > > tell you it was quite explosive.
> > >
> > > Jimmy Deguara
> > >
> > > At 08:19 PM 10/09/00 +1000, you wrote:
> > > >Great updates Nick. Keep up the good work!! Jane is on her way home
> with
> > a
> > > >pocket full of goodies........
> > > >
> > > >Bussy (NE Victoria)
> > > >----- Original Message -----
> > > >From: "Nick Sykes" <nsykes22 at optushome.com.au>
> > > >To: <aussie-weather at world.std.com>
> > > >Sent: Sunday, September 10, 2000 12:13 PM
> > > >Subject: Re: aus-wx: Tornado: NE Victoria
> > > >
> > > >
> > > > > A new piece on the tornado from the ABC news, Midday
> > > > >
> > > > > One house close to been destroyed.
> > > > >
> > > > > Real Media
> > > > >
> > > > > http://seaustraliasatpics.virtualave.net/tornado3.rm
> > > > >
> > > > > wav
> > > > >
> > > > > http://seaustraliasatpics.virtualave.net/tornado3.wav
> > > > >
> > > > > Location of Milawa where the tornado occurred
> > > > > http://www.auslig.gov.au/cgi-bin/gazdraw?20682846
> > > > >
> > > > > Nick Sykes
> > > > >
> > > > >
> > > > >
> > +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> > > > >  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------------------------------
> > >
> > > -----------------------------------------
> > > Jimmy Deguara
> > > Storm Chaser and Mathematics Teacher
> > >
> > > from
> > > Schofields, Sydney
> > > NSW Australia
> > >
> > > e-mail:jdeguara at ihug.com.au
> > >
> > > Web Page with Michael Bath
> > >
> > > Australian Severe Weather Home Page
> > > http://www.australiasevereweather.com
> > >
> > > President of the Australian Severe Weather Association
> > > http://www.severeweather.asn.au
> > >
> > >
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> > >  To unsubscribe from aussie-weather send e-mail
> to:majordomo at world.std.com
> > >  with "unsubscribe aussie-weather your_email_address" in the body of
> your
> > >  message.
> >
  -----------------------jacob at iinet.net.au------------------------------
> > >
> >
> >  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> >  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------------------------------
>
>  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>  To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com
>  with "unsubscribe aussie-weather your_email_address" in the body of your
>  message.
>  -----------------------jacob at iinet.net.au------------------------------
>

 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com
 with "unsubscribe aussie-weather your_email_address" in the body of your
 message.
 -----------------------jacob at iinet.net.au------------------------------
Date: Tue, 12 Sep 2000 01:04:20 +1000
From: Don White <donwhite at ozemail.com.au>
X-Mailer: Mozilla 4.5 [en] (Win98; I)
X-Accept-Language: en
To: Aussie Weather <aussie-weather at world.std.com>
Subject: aus-wx: Two Questions
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com


First, the ultimate trivia question - I suppose I direct this to Blair
but anyone might know the answer who has tabulated data from both cities
- I only have Sydney unfortunately, at this stage.
As of 12 September, Adelaide - Australia's driest capitals city on
average, has had 537.4 mm of rain so far in 2000 (Annual ave around 585
mm). Sydney - Australia's wettest capital on average - has had 534.8 mm
(aver 1220 mm). My question - what is the latest in the year that
Adelaide's rainfall has totalled more than Sydney's and when??

Second question - a little off topic but possibly of interest to more
than just me who uses computers without relaly understanding them. 
Probably directed to Jacob following the request to avoid "one
liners"... how do these lists work? What is meant by band width and how
can short messages affect it? What is meant by "owning" a list and what
does the owner have to or need to do to admisistor it and keep it
working for all us luddites? Should we appreciate you more than we might
be aware of?

Thanks

Don White
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com
 with "unsubscribe aussie-weather your_email_address" in the body of your
 message.
 -----------------------jacob at iinet.net.au------------------------------
From: "Phil Smith" <drdisk at hktrade.com>
To: <aussie-weather at world.std.com>
Subject: Re: aus-wx: Two Questions
Date: Tue, 12 Sep 2000 06:02:25 +0800
Organization: Doctor Disk
X-Mailer: Microsoft Outlook Express 5.50.4133.2400
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com

Perhaps I may answer the second question in part.
The current discussion on many lists on the Internet about "bandwidth"
refers to, by way of illustration, the "thinnest part of the pipe" between
two places that a large quantity of water is trying to get through.
My ISP does not have good connections to Australia so downloading a site or
a file from there is very slow compared to US or Japan.  Eastern Europe is
even slower.  This is because the cables/fibres/circuits/satellite
links/whatever that take the data between these countries can only handle a
certain number of bits per second.  This number of bits per second gets
shared out by the computers in between so that some bits from all pairs of
computers attempting to share the conduit at once get through in each
second.  This goes on until there are just so many conversations that
somebody's computer times out and communication is lost.
To cut a very long story short, we all need to keep all of our
communications as small as possible.
Now you might wonder how sending one-liners could get Jacob worried about
bandwidth.  The answer lies in the part of the message you never get to see
if you are using Outlook Express.
Every message has a section of headers which trace the often dozen or more
computers the message has been through on its way from point A to point B.
In twenty years of using Internet e-mail, I cannot remember any message
having less than about 15 full lines of info amongst its headers and 30 or
more is far more normal.
Therefore an email with just the word "Thanks" takes almost as much
bandwidth as an email with a few sentences, because it will have several
hundred times the length of the message used up by its headers.
Given that most of us these days have become lazy and just hit "Reply"
without snipping out the irrelevant parts of the original message, the reply
ends up with sometimes twice the length of headers.  And those chain letters
we all get at times are some of the worst offenders of all, often having
accumulated hundreds or thousands of addresses amongst the headers on their
way around and around the world.
Thus while it is easier for us as users to have three e-mails from one
person if we have three topics, it is a far more efficient use of Internet
resources to have all three topics covered in a single email.

As to running lists, perhaps David is the better person to answer this, but
generally software is kept upon the server of the person who maintains the
list which can receive and re-send the messages to all people on the list.
I suspect it is fairly automatic on this particular list, as I have seen
David having to "correct"  miscreant users after the event and viruses have
gotten through to us.
On closely moderated lists, all messages have to be read by the moderator or
one of several team members before they are forwarded on.
Some of these systems do things like automatically detecting viruses or
automatically filtering out messages with offensive words.
There are a host of list managing software packages out there now and they
all vary in what features they support.
But in common, the more messages which pass through any list, the more work
ends to be done by the moderator.
Over to David for some more specifics ...


Phil
<><
Phil Smith

Director
Doctor Disk Limited
Unit B, 4th Floor, Imperial Heights
Belair Gardens, Shatin, NT
HONG KONG S.A.R.
People's Republic of China
Phone +852 2646 4672
Fax +852 2637 4006
E-mail: phil at drdisk.com.hk
Home e-mail: drdisk at hktrade.com
Web: http://www.drdisk.com.hk
Typhoon Information: http://www.drdisk.com.hk/cyclones.htm

----- Original Message -----
From: "Don White" <donwhite at ozemail.com.au>
To: "Aussie Weather" <aussie-weather at world.std.com>
Sent: Monday, 11 September 2000 23:04
Subject: aus-wx: Two Questions


>
> First, the ultimate trivia question - I suppose I direct this to Blair
> but anyone might know the answer who has tabulated data from both cities
> - I only have Sydney unfortunately, at this stage.
> As of 12 September, Adelaide - Australia's driest capitals city on
> average, has had 537.4 mm of rain so far in 2000 (Annual ave around 585
> mm). Sydney - Australia's wettest capital on average - has had 534.8 mm
> (aver 1220 mm). My question - what is the latest in the year that
> Adelaide's rainfall has totalled more than Sydney's and when??
>
> Second question - a little off topic but possibly of interest to more
> than just me who uses computers without relaly understanding them.
> Probably directed to Jacob following the request to avoid "one
> liners"... how do these lists work? What is meant by band width and how
> can short messages affect it? What is meant by "owning" a list and what
> does the owner have to or need to do to admisistor it and keep it
> working for all us luddites? Should we appreciate you more than we might
> be aware of?
>
> Thanks
>
> Don White
>  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>  To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com
>  with "unsubscribe aussie-weather your_email_address" in the body of your
>  message.
>  -----------------------jacob at iinet.net.au------------------------------
>
>

 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com
 with "unsubscribe aussie-weather your_email_address" in the body of your
 message.
 -----------------------jacob at iinet.net.au------------------------------
X-Originating-IP: [203.36.248.18]
From: "Kevin Phyland" <kjphyland at hotmail.com>
To: aussie-weather at world.std.com
Subject: aus-wx: Amazingly structured LP supercell...
Date: Tue, 12 Sep 2000 08:17:23 EST
X-OriginalArrivalTime: 11 Sep 2000 22:17:23.0564 (UTC) FILETIME=[0F3DEAC0:01C01C3E]
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com

Hi every1,

This was gleaned from WX-CHASE so it'll be old hat to many but I couldn't 
get over the amazing structure of the meso in this report (which 
incidentally contains some easy to follow explanations...)


http://netnow.micron.net/~mridge/CO_chase.html

Cheers,
Kevin from Wycheproof.
_________________________________________________________________________
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.

Share information about yourself, create your own public profile at 
http://profiles.msn.com.

 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com
 with "unsubscribe aussie-weather your_email_address" in the body of your
 message.
 -----------------------jacob at iinet.net.au------------------------------
From: Blair Trewin <blair at earthsci.unimelb.edu.au>
Subject: Re: aus-wx: Two Questions
To: aussie-weather at world.std.com
Date: Tue, 12 Sep 2000 11:59:07 +1100 (EST)
X-Mailer: ELM [version 2.5 PL2]
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com

> 
> 
> First, the ultimate trivia question - I suppose I direct this to Blair
> but anyone might know the answer who has tabulated data from both cities
> - I only have Sydney unfortunately, at this stage.
> As of 12 September, Adelaide - Australia's driest capitals city on
> average, has had 537.4 mm of rain so far in 2000 (Annual ave around 585
> mm). Sydney - Australia's wettest capital on average - has had 534.8 mm
> (aver 1220 mm). My question - what is the latest in the year that
> Adelaide's rainfall has totalled more than Sydney's and when??

In 1968 Adelaide (654.5) had more rain for the full year than Sydney
(624.8). There may be other years but I haven't checked fully. In
1968, though, Adelaide's rainfall only overtook Sydney's in October
after an extremely dry spring in Sydney (and a somewhat wet one
in Adelaide). I haven't checked whether Adelaide's rainfall has ever
run ahead of Sydney's at this point in the year.

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------------------------------
From: "David Findlay" <nedz at bigpond.com>
To: <aussie-weather at world.std.com>
Subject: aus-wx: Did anyone feel that?
Date: Tue, 12 Sep 2000 11:19:01 +1000
X-Mailer: Microsoft Outlook 8.5, Build 4.71.2173.0
Importance: Normal
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com

I am in Redcliffe north of Brisbane. We just(11:17am) had an incredible
sudden gust of wind from the sw. It was about 100km/ph and lasted 5 to 10
seconds. It has died down now. The sky is perfectly clear, so could it have
been a microburst?

David Findlay

 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com
 with "unsubscribe aussie-weather your_email_address" in the body of your
 message.
 -----------------------jacob at iinet.net.au------------------------------
From: "bussie" <bussie at netc.net.au>
To: "weather list" <aussie-weather at world.std.com>
Subject: aus-wx: Hume Dam
Date: Tue, 12 Sep 2000 13:57:39 +1000
X-Mailer: Microsoft Outlook Express 5.50.4133.2400
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com

The Hume Dam apparently now has 15 of the 17 flood gates open. Saw a picture
on the front of toady's Border Morning Mail (Albury), but haven't seen the
article as yet. It's a spectacular site. Although not as good a site as the
Dartmouth when it overflows. Massive steps cut into the mountain side forms
the spillway. Now that is awesome, and a lot of water of course. The
Dartmouth isn't full though. With big water releases I'd hate to be living
on the banks of the Murray right now.

Bussy (NE Victoria)

 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com
 with "unsubscribe aussie-weather your_email_address" in the body of your
 message.
 -----------------------jacob at iinet.net.au------------------------------
From: "John Woodbridge" <jrw at pixelcom.net>
To: <aussie-weather at world.std.com>
Subject: RE: aus-wx: Did anyone feel that?
Date: Tue, 12 Sep 2000 12:45:06 +1000
X-Mailer: Microsoft Outlook CWS, Build 9.0.2416 (9.0.2911.0)
Importance: Normal
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com

Hi David,

Did not occur at Mt. Crosby, although the Westerly picked up again from
around 10am onwards.  You could have been on one side of a large willy willy
perhaps, the conditions were conducive prior to the onset of the Westerly...
No it could not be a microburst, that requires a severe thunderstorm to be
present.

John.
>snip

Subject: aus-wx: Did anyone feel that?

I am in Redcliffe north of Brisbane. We just(11:17am) had an incredible
sudden gust of wind from the sw. It was about 100km/ph and lasted 5 to 10
seconds. It has died down now. The sky is perfectly clear, so could it have
been a microburst?

David Findlay

 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com
 with "unsubscribe aussie-weather your_email_address" in the body of your
 message.
 -----------------------jacob at iinet.net.au------------------------------
Date: Tue, 12 Sep 2000 12:52:07 +1000
From: Anthony Cornelius <cyclone at bigpond.net.au>
X-Mailer: Mozilla 4.72 [en] (Win98; I)
X-Accept-Language: en
To: aussie-weather at world.std.com
Subject: Microbursts (was)  Re: aus-wx: Did anyone feel that?
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com

Hi David,

Microbursts as I understand form from convective clouds (although if
some one was to argue to me that Nimbostratus could produce microbursts,
they'd probably convince me - just that Nimbostratus often occurs in
very moist environments, where as microbursts require dry air during
part of the atmosphere).  Microbursts are essentially defined as a
downburst less than 4km in width (this was defined for aviation
purposes, something to do with how long a plane needs to take off/land),
and produces winds in excess of 90km/h - well, this is the Australian
definition anyway, it may be different in the US and/or other
countries.)

There are two types of microbursts - although sometimes microbursts may
have characteristics of both.  They are dry microbursts and wet
microbursts.

Dry microbursts occur when the surface temperatures are very high (high
30's, low 40's), and the lower atmosphere (say, most of the atmosphere
from the LCL (lifted condensation level, where a parcel of air has to be
lifted for it to condense), to the surface has low DP's - say below
10C.  Because of the extreme surface temperatures, (potential cold air
aloft), and the presence of a trigger - storms can still form.  Most of
these days often have lapse rates in the lower 3km that are
approximately super-adiabatic, or close to it (keeping in mind that a
super-adiabatic lapse rate cannot exist for very long).  They also
require low level wind shear below the LCL - this will be discussed
later.  However, any storms that form will be very high based since it's
so dry.  Sometimes these storms will precipitate - but it's so dry, that
the air below the base of the cloud causes a lot of the precipitating to
evaporate (ie, virga).  This causes a strong chilling effect below the
cloud - it can be eventually so significant that it becomes negatively
buoyant.  (Negatively buoyant is when a parcel of air will fall freely
through a given layer of the atmosphere, and is the opposite to
positively buoyant where air will ascend freely into the atmosphere
through a given layer.)  This then sinks rapidly - as it sinks, it
warms, however if this layer is still carrying a little precipitation,
it'll continue to evaporate and chill the parcel further - when it's all
evaporated, the air will then warm at the DALR (Dry Adibatical Lapse
Rate, or 9.8C/km).  If there is a lot of wind shear in the low levels,
or the air is very turbulent, the air will mix with its surroundings,
hence 'diluting' the cold air with the warmer air, and causing the
rapidly descending air to become closer to the surrounding temperature,
and the closer it is to the surrounding temperature, the slower it'll
fall.  However, if it remains significantly cooler than its environment,
by the time it reaches the ground it can have attained speeds well over
90-100km/h - but will be accominied with no precipitation - hence the
term "dry microburst."  These storms I would imagine be quite common in
inland NSW & QLD, as in some areas of SA/NT and certainly along the heat
trough of WA in summer.

Wet microbursts on the other hand form differently - they start a bit
higher up in the atmosphere of a large convective cloud.  They require a
lot of low level moisture, but require a significant dry 'slot' in the
mid levels.  This can allow a parcel of air, with its precipitation
mixture of rain (and hail) to evaporate into the surrounding
atmosphere.  Again, this can occur to the extent that it becomes
negatively buoyant.  However, unlike the dry microburst - it has extra
'fuel' to add to its arsenal.  While the dry microburst may have been
lucky to bring with it a little rain and allow the rain to evaporate
into it (hence a brief warming at the SALR, Saturated Adibatical Lapse
rate, between 4-9C/km - before warming at the DALR), the wet microburst
contains with it lots and lots of precipitation.  Remember - that when
parcels of air rise, they expand due to the low pressure, and they cool
adiabatically (ie, without heat exchange - but because there's now the
same amount of heat energy spread over a larger area, hence the
cooling).  The opposite occurs when they fall, they compress and warm -
so does the ELR (Environmental Lapse Rate), as you get closer to the
surface (ignoring the effect of inversions).  So it warms at the SALR -
which is essentially the way it ascended - but remember, it cooled
before starting its descent, so if it reaches the LFS (Level of Free
Sinking), then it'll eventually reach the surface>0

But the thing to remember is that when the parcel of air started at the
surface, it rose, cooled at the DALR, and then the SALR at the LCL - a
downdraft won't do this if it has precipitation!  It'll keep warming at
the SALR until the surface, so the real DMAPE (Downburst Maximum
Available Potential Energy) is created in the low levels, when it's
still warming at the SALR.  So the Delta-T in the surface temperature,
the final parcel temperature that's descending could potentially be
quite large!  I'm not sure of what values would be deemed as
significant, but would *think* that 4-6C difference would be quite
sigificant?  Given that a 4-6C temperature difference in the atmosphere
(between the ascending air parcel and ELR) can result in updrafts in
well in excess of 100km/h.

Updrafts can have maximum potential speeds of over 300km/h!  So it's
potentially quite possible some very severe microbursts can have wind
speeds in similar proportions (ie, Sydney had microburstal winds
estimated to 250km/h in 1991?) - I would have expected significant
cooling in the mid levels, and possibly a relatively high based storm in
very warm temperatures.

This is purely my understand of microbursts, but I hope it helps David -
I think that since we were expecting a SW'ly change today, that it was
possibly just a strong SW'ly surge that can occassionally occur 'out of
the blue' so to speak.

David Findlay wrote:
> 
> I am in Redcliffe north of Brisbane. We just(11:17am) had an incredible
> sudden gust of wind from the sw. It was about 100km/ph and lasted 5 to 10
> seconds. It has died down now. The sky is perfectly clear, so could it have
> been a microburst?
> 
> David Findlay
> 
>  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>  To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com
>  with "unsubscribe aussie-weather your_email_address" in the body of your
>  message.
>  -----------------------jacob at iinet.net.au------------------------------

-- 
Anthony Cornelius
Queensland Coordinator of the Australian Severe Weather Association
(ASWA)
(07) 3390 4812
14 Kinsella St
Belmont, Brisbane
QLD, 4153
Please report severe thunderstorms on our Queensland severe thunderstorm
reporting line on (07) 3390 4218 or by going to our homepage at
http://www.severeweather.asn.au
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com
 with "unsubscribe aussie-weather your_email_address" in the body of your
 message.
 -----------------------jacob at iinet.net.au------------------------------
From: "bussie" <bussie at netc.net.au>
To: "weather list" <aussie-weather at world.std.com>
Subject: aus-wx: Doppler v Traditional radar
Date: Tue, 12 Sep 2000 14:16:10 +1000
X-Mailer: Microsoft Outlook Express 5.50.4133.2400
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com

Just a query. What is the big difference between our current radar and
Doppler. Does it do a sweep quicker, or more powerful microwave beam or
something. Even if we put one in say Melbourne would it still give "false"
echo's from aircraft, mountains etc like the "old" ones?
I know a few things were discussed earlier on, but just wondering a bit more
about it?

Bussy (NE Victoria)

 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com
 with "unsubscribe aussie-weather your_email_address" in the body of your
 message.
 -----------------------jacob at iinet.net.au------------------------------
X-Sender: mm_de at postoffice.utas.edu.au
X-Mailer: QUALCOMM Windows Eudora Light Version 3.0.6 (32)
Date: Tue, 12 Sep 2000 14:53:50 +1000
To: aussie-weather-digest at world.std.com
From: Miguel de Salas <mm_de at postoffice.utas.edu.au>
Subject: aus-wx: Amazing thunderstorm in Hobart!!!  (NOT!!!! :)
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com

Apologies for the misleading topic. Most people would skip this message if
it just said re: admin... I realise it is immorl, but I think it's also
important that people read this.

I know I've said this before, but as well as avoiding as much as possible
these one line emails, it would be nice if people could bother to delete
the email they are responding to avoid accumulation of material after their
message/reply.

It can become EXTREMELY annoying for those of us subscribed to the digest
version of the list to have to scroll through endless copies of messages
that have already appeared.
As an example, see below. I've just left the contents of the message I'm
replying to untouched. The average digest contains 1/3 original material
and 2/3 crap like this that accumulates because some people are too slack
to bother deleting it.

I apologise for sounding anal about it, but I have stated this problem
politely before, and it's just becoming harder and harder to keep track of
the important or interesting messages coming in when one has to scroll past
all this. I've missed many a message I would have liked to recieve on time
because I've scrolled straight past it when avoiding this sort of stuff.

Anyway, sorry for the waffle, but I had to get it out of my system. Keep up
the good work.

As an aside, and a bit more in topic, an interesting phenomenon occurred in
Hobart last thursday: the sundogs (two bright refracted images of the sun
on both sides of a large halo) were visible from Hobart for the second time
in three weeks, and also for the second time anyone can remember (the first
being three weeks ago :))

Is this phenomenon more common in lower or higher latitudes?

>------------------------------
>
>Date: Tue, 12 Sep 2000 06:48:12 +1000
>From: "bussie" <bussie at netc.net.au>
>Subject: Re: aus-wx: Tornado: NE Victoria
>
>How stiff's that. You were a stones throw away.
>
>Bussy
>
>- ----- Original Message -----
>From: "clyve herbert" <mesof5 at iprimus.com.au>
>To: <aussie-weather at world.std.com>
>Sent: Monday, September 11, 2000 9:23 PM
>Subject: Re: aus-wx: Tornado: NE Victoria
>
>
>> Hi Bussy.
>> You wont believe it but I drove past the Malawa turn off heading back to
>> Geelong yesterday and almost went that way instead of the Alpine way,
>> although I ended up at Beechworth and some friendly person in  a gift shop
>> showed me his collection of photos of the great snow storm they had in
>> May.Regards Clyve Herbert.
>> ----- Original Message -----
>> From: bussie <bussie at netc.net.au>
>> To: <aussie-weather at world.std.com>
>> Sent: Monday, September 11, 2000 6:51 AM
>> Subject: Re: aus-wx: Tornado: NE Victoria
>>
>>
>> > Anybody get this on radar or something? Would like to see it.
>> >
>> > Bussy
>> >
>> > ----- Original Message -----
>> > From: "Jimmy Deguara" <jdeguara at ihug.com.au>
>> > To: <aussie-weather at world.std.com>
>> > Sent: Sunday, September 10, 2000 8:30 PM
>> > Subject: Re: aus-wx: Tornado: NE Victoria
>> >
>> >
>> > > Sorry if I have been ignorant had it been mentioned, but what was the
>> time
>> > > when the tornado hit? I am trying to narrow down the storm that did it
>> but
>> > > I think I know which one. If it was the one I was thinking of, then I
>> can
>> > > tell you it was quite explosive.
>> > >
>> > > Jimmy Deguara
>> > >
>> > > At 08:19 PM 10/09/00 +1000, you wrote:
>> > > >Great updates Nick. Keep up the good work!! Jane is on her way home
>> with
>> > a
>> > > >pocket full of goodies........
>> > > >
>> > > >Bussy (NE Victoria)
>> > > >----- Original Message -----
>> > > >From: "Nick Sykes" <nsykes22 at optushome.com.au>
>> > > >To: <aussie-weather at world.std.com>
>> > > >Sent: Sunday, September 10, 2000 12:13 PM
>> > > >Subject: Re: aus-wx: Tornado: NE Victoria
>> > > >
>> > > >
>> > > > > A new piece on the tornado from the ABC news, Midday
>> > > > >
>> > > > > One house close to been destroyed.
>> > > > >
>> > > > > Real Media
>> > > > >
>> > > > > http://seaustraliasatpics.virtualave.net/tornado3.rm
>> > > > >
>> > > > > wav
>> > > > >
>> > > > > http://seaustraliasatpics.virtualave.net/tornado3.wav
>> > > > >
>> > > > > Location of Milawa where the tornado occurred
>> > > > > http://www.auslig.gov.au/cgi-bin/gazdraw?20682846
>> > > > >
>> > > > > Nick Sykes
>> > > > >
>> > > > >
>> > > > >
>> > +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>> > > > >  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------------------------------
>> > >
>> > > -----------------------------------------
>> > > Jimmy Deguara
>> > > Storm Chaser and Mathematics Teacher
>> > >
>> > > from
>> > > Schofields, Sydney
>> > > NSW Australia
>> > >
>> > > e-mail:jdeguara at ihug.com.au
>> > >
>> > > Web Page with Michael Bath
>> > >
>> > > Australian Severe Weather Home Page
>> > > http://www.australiasevereweather.com
>> > >
>> > > President of the Australian Severe Weather Association
>> > > http://www.severeweather.asn.au
>> > >
>> > >
>+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>> > >  To unsubscribe from aussie-weather send e-mail
>> to:majordomo at world.std.com
>> > >  with "unsubscribe aussie-weather your_email_address" in the body of
>> your
>> > >  message.
>> >
>  -----------------------jacob at iinet.net.au------------------------------
>> > >
>> >
>> >  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>> >  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------------------------------
>>
>>  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>  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------------------------------


Miguel de Salas
mailto:mm_de at postoffice.utas.edu.au

 School of Plant Science,
 University of Tasmania,
 GPO Box 252-55, Hobart,
 Tasmania, Australia, 7001.


 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com
 with "unsubscribe aussie-weather your_email_address" in the body of your
 message.
 -----------------------jacob at iinet.net.au------------------------------
X-Authentication-Warning: neumann.maths.monash.edu.au: robert owned process doing -bs
Date: Tue, 12 Sep 2000 15:39:18 +1100 (EST)
From: Robert Goler <robert at mail.maths.monash.edu.au>
X-Sender: robert at neumann.maths.monash.edu.au
To: aussie-weather at world.std.com
cc: aussie-weather-digest at world.std.com
Subject: aus-wx: Re: sundogs - "woof"
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com

> 
> Is this phenomenon (sundogs) more common in lower or higher latitudes?
> 

I would have thought these would have been more common in higher
latitudes. Since these sundogs are caused by ice crystals in the
atmosphere, the more prevalent the ice crystals, then the more chance you
have of seeing them. 

It seems the most spectacular photos showing sundogs, or any other optical
phenomenon is always from Antarctica in the southern hemisphere, or in
Scandanavia/Canada etc for the northern hemisphere. In these regions,
due to the cold air, the ice crystals can exist to low levels in the
atmosphere.

The only time I have seen sundogs in Adelaide and in Melbourne (which
included 3 consecutive afternoons in March this year) was when cirrus
cloud was present, ie ice crystals. So, in lower latitudes if there's no
cirrus cloud in the sky, then you stand little chance of seeing these
features. However, in higher latitudes, ice crystals can be present in
the lower atmosphere without the need for cirrus clouds.


Cheers

--

Robert A. Goler        

E-mail robert at mail.maths.monash.edu.au
http://www.maths.monash.edu.au/~robert/

Department of Mathematics and Statistics
Monash University
Clayton, Vic 3800
Australia

--

 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com
 with "unsubscribe aussie-weather your_email_address" in the body of your
 message.
 -----------------------jacob at iinet.net.au------------------------------
X-Sender: jacob at mail.iinet.net.au
X-Mailer: QUALCOMM Windows Eudora Pro Version 4.1
Date: Tue, 12 Sep 2000 13:17:14 +0800
To: aussie-weather at world.std.com
From: Jacob <jacob at iinet.net.au>
Subject: Re: aus-wx: Two Questions
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com


Yes, you are pretty much correct, also an annoying factor comes into it if
one person sends one liner
emails several times in one day. Most of us would prefer to see one or two
emails with a few sentences from someone rather than many emails with only
one line in each.

As with running the list, most of it is automatic, but due to the size of
the list, myself and Dave get message errors from the list everyday, we've
been getting such emails for over a year and half now.
When downloading 150 emails or so, and seeing that about 70% of them are
message errors, it can get annoying sometimes.

For instance we get these type of errors from a person's ISP: (only pasting
the very top of the emails)

Subject: Message status - undeliverable
The message that you sent was undeliverable to the following: 
granneskat at ridgewater.mnscu.edu (user not found)

and

Subject: Returned mail: User unknown
The original message was received at Tue, 12 Sep 2000 15:03:40 +1100 
from smtpd at localhost
----- The following addresses had permanent fatal errors ----- 
<manda at buffy.tpgi.com.au> 
manda at bwn-mail.tpg.com.au 
(expanded from: <manda at buffy.tpgi.com.au>)

and

Subject: failure delivery 

Message from yahoo.com. 
Unable to deliver message to the following address(es).
<pnitkiew at yahoo.com>: 
Sorry, your message to pnitkiew at yahoo.com cannot be delivered. This account
is overquota. 
Sorry, your message to pnitkiew at yahoo.com cannot be delivered. This account
is overquota. 
leaving proxy group udbs (client)

We don't always get these errors from those email addresses, it changes
from time to time to different people, depending on how unstable that
persons ISP is etc..

For every post to the list, we can get several errors that is emailed back
to me and Dave automaticly, so in any given day, we can get up to 100
emails back like that a day, ofcourse me and Dave filter these into
seperate email folders, otherwise our email client would be a mess.

Then we also get bounced messages from either people sending from an email
address that isn't subscribed or someone sending a message that is too long
(usually with an attachment). We both can view the email, if its on topic
Dave aproves it and sends it to the list (Except large attachments). For
instance we get a lot of spam email, which is ofcourse never approved,
thats why we never see it on the list.

Some also have troubles subscribing to the list, in which case they email
us, and we then manually put them on the list.

Jacob


At 06:02  12/09/00 +0800, you wrote:
>Now you might wonder how sending one-liners could get Jacob worried about
>bandwidth.  The answer lies in the part of the message you never get to see
>if you are using Outlook Express.
>Every message has a section of headers which trace the often dozen or more
>computers the message has been through on its way from point A to point B.
>In twenty years of using Internet e-mail, I cannot remember any message
>having less than about 15 full lines of info amongst its headers and 30 or
>more is far more normal.
>Therefore an email with just the word "Thanks" takes almost as much
>bandwidth as an email with a few sentences, because it will have several
>hundred times the length of the message used up by its headers.
>Given that most of us these days have become lazy and just hit "Reply"
>without snipping out the irrelevant parts of the original message, the reply
>ends up with sometimes twice the length of headers.  And those chain letters
>we all get at times are some of the worst offenders of all, often having
>accumulated hundreds or thousands of addresses amongst the headers on their
>way around and around the world.
>Thus while it is easier for us as users to have three e-mails from one
>person if we have three topics, it is a far more efficient use of Internet
>resources to have all three topics covered in a single email.


 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com
 with "unsubscribe aussie-weather your_email_address" in the body of your
 message.
 -----------------------jacob at iinet.net.au------------------------------
From: "dann weatherhead" <weatherhead at ozemail.com.au>
To: <aussie-weather at world.std.com>
Subject: aus-wx: 25th August chase report and photos.
Date: Tue, 12 Sep 2000 16:25:19 +1000
X-Mailer: Microsoft Outlook Express 5.00.2615.200
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com

<x-html>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content="text/html; charset=iso-8859-1" http-equiv=Content-Type>
<META content="MSHTML 5.00.2614.3500" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT face=Arial size=2>Hey everyone, </FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=Arial size=2>Here is&nbsp;the link to the report and photos for 
Thursday 25th August.</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=Arial size=2><A 
href="http://www.sydneystormchasers.com/2000/august24.htm">http://www.sydneystormchasers.com/2000/august24.htm</A></FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=Arial size=2>Also some nice photos:</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=Arial size=2><A 
href="http://www.sydneystormchasers.com/pictures/Daniel/2000/08-18-00-01.jpg">http://www.sydneystormchasers.com/pictures/Daniel/2000/08-18-00-01.jpg</A></FONT></DIV>
<DIV><FONT face=Arial size=2><A 
href="http://www.sydneystormchasers.com/pictures/Daniel/2000/08-18-00-02.jpg">http://www.sydneystormchasers.com/pictures/Daniel/2000/08-18-00-02.jpg</A></FONT></DIV>
<DIV><FONT face=Arial size=2><A 
href="http://www.sydneystormchasers.com/pictures/Daniel/2000/08-18-00-03.jpg">http://www.sydneystormchasers.com/pictures/Daniel/2000/08-18-00-03.jpg</A></FONT></DIV>
<DIV><FONT face=Arial size=2><A 
href="http://www.sydneystormchasers.com/pictures/Daniel/2000/sunset1.jpg">http://www.sydneystormchasers.com/pictures/Daniel/2000/sunset1.jpg</A></FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=Arial size=2>Enjoy!!</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=Arial size=2>dann</FONT></DIV>
<DIV><FONT face=Arial size=2>__________________________<BR>Daniel Weatherhead 
<BR>Blaxland, NSW<BR><A 
href="mailto:weatherhead at ozemail.com.au">weatherhead at ozemail.com.au</A><BR>SYDNEY 
STORM CHASERS<BR><A 
href="http://www.sydneystormchasers.com">www.sydneystormchasers.com</A><BR></FONT></DIV></BODY></HTML>
</x-html>
X-Sender: jdeguara at pop.ihug.com.au
X-Mailer: QUALCOMM Windows Eudora Version 4.3.2
Date: Tue, 12 Sep 2000 16:30:34 +1000
To: aussie-weather at world.std.com
From: Jimmy Deguara <jdeguara at ihug.com.au>
Subject: Re: Microbursts (was)  Re: aus-wx: Did anyone feel that?
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com

At 12:52 PM 12/09/00 +1000, you wrote:
>Microbursts as I understand form from convective clouds (although if
>some one was to argue to me that Nimbostratus could produce microbursts,
>they'd probably convince me - just that Nimbostratus often occurs in
>very moist environments, where as microbursts require dry air during
>part of the atmosphere).

Hi Anthony,

I do believe you can get extremely strong gusts when extremely dry air is 
situation below areas of shower clouds. This occurred a few days ago on 
Saturday 9th September 2000. Showers had developed over the mountains 
during the early afternoon. As these progressed over the western Sydney 
basin, you could see the cloud and shower region dissipate but also we 
experienced significantly stronger wind gusts, even though it was fresh W 
winds. Apparently the dew points in Sydney were around 2C and the models 
had much more moister air aloft.

I believe the processes are the same but the dynamics are different with 
more shear. If the wind strength satisfies the definition, would you call 
this a microburst, macroburst, downburst???

Jimmy Deguara
-----------------------------------------
Jimmy Deguara
Storm Chaser and Mathematics Teacher

from
Schofields, Sydney
NSW Australia

e-mail:jdeguara at ihug.com.au

Web Page with Michael Bath

Australian Severe Weather Home Page
http://www.australiasevereweather.com

President of the Australian Severe Weather Association
http://www.severeweather.asn.au

 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com
 with "unsubscribe aussie-weather your_email_address" in the body of your
 message.
 -----------------------jacob at iinet.net.au------------------------------
Date: Tue, 12 Sep 2000 12:46:59 -0700
From: Lindsay Pearce <writer at lisp.com.au>
X-Mailer: Mozilla 4.05 [en] (Win16; I)
To: aussie-weather at world.std.com
Subject: aus-wx: WEATHER: How are the ski-fields? OFFTOPIC: Bandwidth etc.
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com

(Written offline: Tuesday 2:15pm)

* Does any one have some information on the ski fields? That is, how's
the spring melt going? I'm just trying to get an accurate idea of the
conditions down there other than staring into the snow cams etc. 

* Thanks Phil for the bandwidth info etc, it was helpful.

* Was it Andrew Miskelly who posted a link for the Central Tablelands
boundaries some weeks ago? I can't find the post in my folders. Could
Andrew or someone else help me with this enquiry? I'm just curious to
know the exact boundaries of the Central Tablelands.


Thanks,


Lindsay Pearce

Phil Smith wrote:
> 
> Perhaps I may answer the second question in part.
> The current discussion on many lists on the Internet about "bandwidth"
> refers to, by way of illustration, the "thinnest part of the pipe" between
> two places that a large quantity of water is trying to get through.
SNIP...

 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com
 with "unsubscribe aussie-weather your_email_address" in the body of your
 message.
 -----------------------jacob at iinet.net.au------------------------------
From: "Anthony Spierings" <as029 at bigpond.net.au>
To: <aussie-weather at world.std.com>
Subject: aus-wx: Lightning hits Shuttle Launch Pad
Date: Tue, 12 Sep 2000 18:03:01 +1000
X-Mailer: Microsoft Outlook 8.5, Build 4.71.2173.0
Importance: Normal
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com


Hello All,

This web page has a Quick Time 4 picture of lightning hitting the shuttle
launch pad (with a shuttle at the pad) on 5 Sept 2000.


http://spaceflightnow.com/shuttle/sts106/video/000906lightning_qt.html

While you are at this web site you might like to check out some of the
'rocket cam' files.

http://spaceflightnow.com/features/rocketcams/index.html

Regards,


Anthony Spierings
as029 at bigpond.net.au

 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com
 with "unsubscribe aussie-weather your_email_address" in the body of your
 message.
 -----------------------jacob at iinet.net.au------------------------------
X-Originating-IP: [198.142.93.223]
From: "Shaun Whelan" <wheelsthepusser at hotmail.com>
To: aussie-weather at world.std.com
Subject: Re: aus-wx: Doppler v Traditional radar
Date: Tue, 12 Sep 2000 18:09:10 EST
X-OriginalArrivalTime: 12 Sep 2000 08:09:10.0862 (UTC) FILETIME=[BB3D9EE0:01C01C90]
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com

Hey Bussie, how are things in Mexico? Hot & dry?(chuckle). Anyway enough of 
that interstate rivalry,we all know what state is the greatest.The main 
difference between Doppler & traditional radar that I was taught was that 
with radar you get a range & bearing to an object (RADAR-radio direction and 
ranging) but with Doppler you get the same and a readout of the objects 
course and speed etc.There are significant other differences in the way they 
illuminate an object but that was the basic stuff that I was taught 
many,many,many years ago. If someone out there can give help out here some 
more it would be greatly appreciated.
                    Hope this helped a little
                                              Shaun      (Nowra)

    P:S. I'm going to use the same sort of sign off tag as you (location) as 
I find it helps knowing not only who you are talking to but where as well.
                  S.


>From: "bussie" <bussie at netc.net.au>
>Reply-To: aussie-weather at world.std.com
>To: "weather list" <aussie-weather at world.std.com>
>Subject: aus-wx: Doppler v Traditional radar
>Date: Tue, 12 Sep 2000 14:16:10 +1000
>
>Just a query. What is the big difference between our current radar and
>Doppler. Does it do a sweep quicker, or more powerful microwave beam or
>something. Even if we put one in say Melbourne would it still give "false"
>echo's from aircraft, mountains etc like the "old" ones?
>I know a few things were discussed earlier on, but just wondering a bit 
>more
>about it?
>
>Bussy (NE Victoria)
>
>  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>  To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com
>  with "unsubscribe aussie-weather your_email_address" in the body of your
>  message.
>  -----------------------jacob at iinet.net.au------------------------------

_________________________________________________________________________
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.

Share information about yourself, create your own public profile at 
http://profiles.msn.com.

 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com
 with "unsubscribe aussie-weather your_email_address" in the body of your
 message.
 -----------------------jacob at iinet.net.au------------------------------
From: "bussie" <bussie at netc.net.au>
To: "weather list" <aussie-weather at world.std.com>
Subject: aus-wx: Hume Dam error
Date: Tue, 12 Sep 2000 19:14:54 +1000
X-Mailer: Microsoft Outlook Express 5.50.4133.2400
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com

Sorry. Sent a post before stating that 15 of the 17 Hume Dam gates are open.
Apparently it is 12.

Bussy (NE Victoria)

 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com
 with "unsubscribe aussie-weather your_email_address" in the body of your
 message.
 -----------------------jacob at iinet.net.au------------------------------
From: "bussie" <bussie at netc.net.au>
To: "weather list" <aussie-weather at world.std.com>
Subject: aus-wx: Doppler Radar
Date: Tue, 12 Sep 2000 19:40:30 +1000
X-Mailer: Microsoft Outlook Express 5.50.4133.2400
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com

The main difference between Doppler & traditional radar that I was taught
was that
with radar you get a range & bearing to an object (RADAR-radio direction and
ranging) but with Doppler you get the same and a readout of the objects
course and speed etc.There are significant other differences in the way they
illuminate an object but that was the basic stuff that I was taught
many,many,many years ago. If someone out there can give help out here some
more it would be greatly appreciated.
                    Hope this helped a little
                                              Shaun      (Nowra)

    P:S. I'm going to use the same sort of sign off tag as you (location) as
I find it helps knowing not only who you are talking to but where as well.

It sure does help.Thanks. So basically it is the same as a regular radar
only it can tell what direction and speed something is heading?
Does it suffer from the "false echoes" etc?
Is Doppler very old, compared to the traditional radar we use here?

I Like to use the "tag" as it lets everyone know where I am and gives an
added hint about what I'm on about. If no-one knew where I was and I just
said "Severe Thunderstorm just went over here" and signed it, no-one would
know where I was talking about. With the NE Victoria tag it makes it a bit
easier to track what's going on.
Bussy (NE Victoria)

 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com
 with "unsubscribe aussie-weather your_email_address" in the body of your
 message.
 -----------------------jacob at iinet.net.au------------------------------
From: "Ben Quinn" <benquinn at optushome.com.au>
To: <aussie-weather at world.std.com>
Subject: Re: aus-wx: Lightning hits Shuttle Launch Pad
Date: Tue, 12 Sep 2000 18:55:30 +1000
X-Mailer: Microsoft Outlook Express 5.50.4133.2400
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com

Hi Everyone,

Further to this - i got this picture from the NOAA spectacular images
archive a while ago (these images are in the public domain so you can do
what you like with them) - it shows some spectacular lightning hitting the
launch pad

http://www.bsch.simplenet.com/archiveddata/speci/thunderstorms/116.html

And also a nifty shot of lightning from space

http://www.bsch.simplenet.com/archiveddata/speci/thunderstorms/117.html




----- Original Message -----
From: "Anthony Spierings" <as029 at bigpond.net.au>
To: <aussie-weather at world.std.com>
Sent: Tuesday, September 12, 2000 6:03 PM
Subject: aus-wx: Lightning hits Shuttle Launch Pad


>
> Hello All,
>
> This web page has a Quick Time 4 picture of lightning hitting the shuttle
> launch pad (with a shuttle at the pad) on 5 Sept 2000.
>
>
> http://spaceflightnow.com/shuttle/sts106/video/000906lightning_qt.html
>
> While you are at this web site you might like to check out some of the
> 'rocket cam' files.
>
> http://spaceflightnow.com/features/rocketcams/index.html
>
> Regards,
>
>
> Anthony Spierings
> as029 at bigpond.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------------------------------

 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com
 with "unsubscribe aussie-weather your_email_address" in the body of your
 message.
 -----------------------jacob at iinet.net.au------------------------------
X-Originating-IP: [203.171.105.205]
From: "Kevin Phyland" <kjphyland at hotmail.com>
To: aussie-weather at world.std.com
Subject: Re: Microbursts (was) Re: aus-wx: Did anyone feel that?
Date: Tue, 12 Sep 2000 20:15:39 EST
X-OriginalArrivalTime: 12 Sep 2000 10:15:39.0799 (UTC) FILETIME=[66998270:01C01CA2]
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com

Hi Anthony,

Sure made clear air turbulence easier to understand for me! <g>

Kevin.



could it have
> > been a microburst?
> >
> > David Findlay
> >
> >  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> >  To unsubscribe from aussie-weather send e-mail 
>to:majordomo at world.std.com
> >  with "unsubscribe aussie-weather your_email_address" in the body of 
>your
> >  message.
> >  -----------------------jacob at iinet.net.au------------------------------
>
>--
>Anthony Cornelius
>Queensland Coordinator of the Australian Severe Weather Association
>(ASWA)
>(07) 3390 4812
>14 Kinsella St
>Belmont, Brisbane
>QLD, 4153
>Please report severe thunderstorms on our Queensland severe thunderstorm
>reporting line on (07) 3390 4218 or by going to our homepage at
>http://www.severeweather.asn.au
>  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>  To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com
>  with "unsubscribe aussie-weather your_email_address" in the body of your
>  message.
>  -----------------------jacob at iinet.net.au------------------------------

_________________________________________________________________________
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.

Share information about yourself, create your own public profile at 
http://profiles.msn.com.

 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com
 with "unsubscribe aussie-weather your_email_address" in the body of your
 message.
 -----------------------jacob at iinet.net.au------------------------------
From: "John Graham" <gorzzzz at dingoblue.net.au>
To: "Aussie Weather" <aussie-weather at world.std.com>
Subject: aus-wx: Fw: OFFTOPIC:feeling too old today?
Date: Tue, 12 Sep 2000 21:42:41 +1000
X-Mailer: Microsoft Outlook Express 5.50.4133.2400
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com




> ** High Priority **
>
> Just in case you weren't feeling too old today, this will certainly change
things. Each year the staff at Beloit College in Wisconsin puts together a
list to try to give the faculty a sense of the mind set of that year's
incoming freshmen.
>
>
>
>          Here is this year's list:
>
>
>
> The people who are starting college this fall across  the nation were born
in 1982.
>
> They have no meaningful recollection of the Reagan Era and probably did
not know he had ever been shot.
>
> They were prepubescent when the Persian Gulf War was  waged.
>
> Black Monday, 1987 is as significant to them as the  Great Depression.
>
> There has been only one Pope.
>
> They have never feared a nuclear war.
>
> They are too young to remember the space shuttle  blowing up.
>
> Tianamen Square means nothing to them.
>
> Bottle caps have always been screw off and plastic.
>
> The expression "you sound like a broken record" means nothing to them.
>
> They have never owned a record  player.
>
> They have likely never played Pac Man and have never heard of Pong.
>
> They may have never heard of an 8 track.
>
> The Compact Disc was introduced when they were 1 year old.
>
> As far as they know, stamps have always cost about 33  cents.
>
> They have always had an answering machine.
>
> Most have never seen a TV set with only 13 channels, nor have they seen a
black-and-white TV.
>
> They have always had cable.
>
> There have always been VCRs, but they have no idea what BETA is.
>
> They cannot fathom not having a remote control.
>
> They were born the year that Walkmen were introduced  by Sony.
>
> Roller-skating has always meant inline for them.
>
> Jay Leno has always been on the Tonight Show.
>
> They have no idea when or why Jordache jeans were  cool.
>
> Popcorn has always been cooked in the microwave.
>
> They have never seen Larry Bird play.
>
> They never took a swim and thought about "Jaws."
>
> The Vietnam War is as ancient history to them as the Civil War, W.W.I, and
W.W.II.
>
> They have no idea that Americans were ever held hostage in Iran.
>
> They can't imagine what hard contact lenses are.
>
> They don't know who Mork was or where he was from.
>
> They never heard: "Where's the beef?", "I'd walk a  mile for a Camel," or
"de plane, de plane."
>
> They do not care who shot J. R., and have no idea who  J.R. is.
>
> The Titanic was found? They thought we always knew  where it was.
>
> Michael Jackson has always been white.
>
> Kansas, Chicago, Boston, America, and Alabama are places, not groups.
>
> McDonald's never came in Styrofoam containers.
>
> There has always been MTV.
>
> They don't have a clue how to use a typewriter.
>
> Do you feel old yet?  Nasty feeling, huh?  One way to perk up is to pass
this on to the other old fogies you know.  Those of you who don't understand
any of the above-what are you smirking at???
>
>
>

 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com
 with "unsubscribe aussie-weather your_email_address" in the body of your
 message.
 -----------------------jacob at iinet.net.au------------------------------
X-Originating-IP: [198.142.93.75]
From: "Shaun Whelan" <wheelsthepusser at hotmail.com>
To: aussie-weather at world.std.com
Subject: Re: aus-wx: Doppler Radar
Date: Tue, 12 Sep 2000 22:26:25 EST
X-OriginalArrivalTime: 12 Sep 2000 12:26:25.0955 (UTC) FILETIME=[AB45E730:01C01CB4]
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com

Hey Bussie. What's going on? No bites?Oh well. I'm not sure how old Doppler 
radar is but it isn't as old as normal RADAR that the Brits fine tuned 
during WWII. If you can find anything about the stuff that they did then, 
have a read, I think you'll find it's where they they coined the term 
"Bloody Single-Mindness". They basically designed a radar that the Germans 
said couldn't work (millimetric s..t). I'm not sure how susceptable it is to 
false echoes and such but it's the basis for most wind shear and EWACS type 
operating systems. If you want any more info I'll try to track down the 
book(s) that I read.
                                         Happy Hunting
                                               Wheels (Shaun)  Nowra
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>  To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com
>  with "unsubscribe aussie-weather your_email_address" in the body of your
>  message.
>  -----------------------jacob at iinet.net.au------------------------------

_________________________________________________________________________
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.

Share information about yourself, create your own public profile at 
http://profiles.msn.com.

 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com
 with "unsubscribe aussie-weather your_email_address" in the body of your
 message.
 -----------------------jacob at iinet.net.au------------------------------