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#1459582 - 28/03/2018 16:24 Re: NSW/ACT day to day weather [Re: Grant]
DerekHV Offline
Weatherzone Addict

Registered: 12/02/2010
Posts: 1132
Loc: Aberglasslyn (Maitland) NSW
Extreme heat in the Pilbara is an interesting phenomenon, not sure any will make it here though.
Although, the blistering heatwave in Feb 1998, that gave rise to the 2nd hottest verifiable temp recorded in Australia, 50.5C at Mardie, also gave rise to very hot February and Marchs in central east NSW.

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#1459583 - 28/03/2018 16:39 Re: NSW/ACT day to day weather [Re: Knot]
Mr Buzle Offline
Weather Freak

Registered: 09/09/2014
Posts: 66
Loc: Lake Macquarie NSW
Yeah I did too! I’m not as knowledgeable on models and stuff as some of the others here but I do like to look at the sat pic to get an idea of what’s coming. Too much sun on the land without shade from clouds or even rain and it’s gotta heat up.

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#1459584 - 28/03/2018 16:53 Re: NSW/ACT day to day weather [Re: Grant]
Antarctic Whaler Offline
Weather Freak

Registered: 26/03/2018
Posts: 55
Loc: Black Springs NSW; 1,228-1,265...
Quite warm for the time of year at this elevation now; 24.9° C. Would love meself some days in excess of 30° C with negative dew points like I've expereinced down in Rockley and Tannas Mount (30.0° C with a –4.9° C dew point).

This autumn's looking splendid so far! grin
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#1459585 - 28/03/2018 16:53 Re: NSW/ACT day to day weather [Re: Grant]
Knot Offline
Weatherzone Addict

Registered: 01/05/2014
Posts: 2560
Loc: Toronto N.S.W
I wouldn't know the $ss end of a model either Buz. Just old school sat pics and synoptics does me fine.
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#1459590 - 28/03/2018 17:50 Re: NSW/ACT day to day weather [Re: Knot]
Homer Offline
Meteorological Motor Mouth

Registered: 16/06/2007
Posts: 5855
Loc: Dural
Originally Posted By: Knot
I wouldn't know the $ss end of a model either Buz. Just old school sat pics and synoptics does me fine.



Me too, although, I must say I've learnt a lot more about models since I've been on this forum.
Those skew charts though with all the scribbly lines....WTF? confused haha.


Edited by Homer (28/03/2018 17:51)

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#1459593 - 28/03/2018 17:59 Re: NSW/ACT day to day weather [Re: Grant]
ashestoashes Offline
Weather Freak

Registered: 22/10/2017
Posts: 364
Loc: Voyager Point (South West Sydn...
When I finish school I think I'll do some proper learning of Skew-T diagrams and other weather forecasting tools.

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#1459595 - 28/03/2018 18:56 Re: NSW/ACT day to day weather [Re: Grant]
Knot Offline
Weatherzone Addict

Registered: 01/05/2014
Posts: 2560
Loc: Toronto N.S.W
I guess if you wanted a career in Meteorology of some kind then keeping up to date with the tools used would be a good idea. Like needing a good grasp of classical music theory if you want to get on top of Bach. But if all you wanna do is rock and roll weather I think model ins and outs are a bit too involved.
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#1459603 - 28/03/2018 20:09 Re: NSW/ACT day to day weather [Re: Grant]
Antarctic Whaler Offline
Weather Freak

Registered: 26/03/2018
Posts: 55
Loc: Black Springs NSW; 1,228-1,265...
Cooled down quite a bit now—only 15.7° C.
_________________________
“Below 40 degrees South, there is no law; below 50 degrees South, there is no rescue; below 60 degrees South, there is no hope; below 70 degrees South, there is no God.”

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#1459609 - 28/03/2018 21:00 Re: NSW/ACT day to day weather [Re: Grant]
EddyG Offline
Weatherzone Addict

Registered: 19/12/2008
Posts: 4953
Loc: Port Stephens NSW
Happy Birthday DerekHV.

Another spectacular autumn day, maxed out at 26.3c.

Skew T diagrams are hard to understand, I have a basic understanding of them, but that's about it.
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#1459612 - 28/03/2018 21:41 Re: NSW/ACT day to day weather [Re: Grant]
Wave Rider Offline
Meteorological Motor Mouth

Registered: 27/01/2014
Posts: 6877
If you go onto a BSCH stormcast sounding in the link

http://soundings.bsch.com.au/skew-t.html...on=nsw&type=aus


The red line on the right is the temp, red line on the left is the dew point. The vertical scale is atmospheric levels and the horizontal is the temp. But except the temp scale is diagonal. The grey line is a measure of instability. If it's to the right of the temp then the atmosphere is unstable. On the far right side of the sounding is the winds.

So at 4pm around the Sydney area today, the sounding shows a very stable atmosphere (grey line is far to the left of temp) and no cloud (the red lines are not touching at any point meaning no areas of 100% humidity in the atmosphere). At the surface it shows approx 23°C with 17°C dew point and 15 knot NEer. At say 800mb (2038m- but this number varies with atmospheric pressure, the elevation at 800mb will be lower in lower pressure) the temp is about 15°C with -6°C dp and 17 knot WSWly.

If you can take the time to understand them they can be a very interesting tool for looking at where unstable areas on the atmosphere are or even what exact level clouds may form at.
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The longer you wait for storms, the more you appreciate them.

2017-18 storm total= 11
Oct 25th
Nov 6th(3), 17th
Dec 2nd, 14th
Jan 2nd(2), 8th(2), 9th

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#1459613 - 28/03/2018 21:49 Re: NSW/ACT day to day weather [Re: Grant]
Wave Rider Offline
Meteorological Motor Mouth

Registered: 27/01/2014
Posts: 6877
Ashes to ashes, if you really want to learn about this, the link below has a very good explanation (although the yellow writing on black background is a bit annoying). I reckon you will be able to grasp the concept of it.

http://www.downunderchase.com/storminfo/stormguide/guide06.html


Edited by Wave Rider (28/03/2018 21:49)
_________________________
The longer you wait for storms, the more you appreciate them.

2017-18 storm total= 11
Oct 25th
Nov 6th(3), 17th
Dec 2nd, 14th
Jan 2nd(2), 8th(2), 9th

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#1459615 - 28/03/2018 22:22 Re: NSW/ACT day to day weather [Re: Wave Rider]
ashestoashes Offline
Weather Freak

Registered: 22/10/2017
Posts: 364
Loc: Voyager Point (South West Sydn...
Originally Posted By: Wave Rider
Ashes to ashes, if you really want to learn about this, the link below has a very good explanation (although the yellow writing on black background is a bit annoying). I reckon you will be able to grasp the concept of it.

http://www.downunderchase.com/storminfo/stormguide/guide06.html

Thanks WaveRider, I already stumbled upon this before person who made it seems like a legend.

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#1459626 - 29/03/2018 04:50 Re: NSW/ACT day to day weather [Re: Grant]
Knot Offline
Weatherzone Addict

Registered: 01/05/2014
Posts: 2560
Loc: Toronto N.S.W
Mildish night again. Av min upticking. Going to be very close for Nobbys to break 1956 av min record. Given the heat in other parts of country,
Newie might as well break a long standing record as well. The av max record is safe for another year. The remaining days of March would have to hit 37 each day to beat the post 1910 record from 2015.
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#1459627 - 29/03/2018 06:38 Re: NSW/ACT day to day weather [Re: Grant]
Knot Offline
Weatherzone Addict

Registered: 01/05/2014
Posts: 2560
Loc: Toronto N.S.W
Skew T a bit involved.
For simplicity I just look at current surface pressure and temp over your location or a site. Use that data to get what height 500mb pressure is above the site. And that height tells you if air is bulging up (stable) or dipping (unstable). The range between a bulge and dip is about 5000 metres. Currently above Newie the 500mb is around 5800 metres. And guess what. The weather is stable. And boring
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#1459628 - 29/03/2018 07:02 Re: NSW/ACT day to day weather [Re: Grant]
Knot Offline
Weatherzone Addict

Registered: 01/05/2014
Posts: 2560
Loc: Toronto N.S.W
At least I think I understand things correctly lol
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#1459630 - 29/03/2018 07:16 Re: NSW/ACT day to day weather [Re: Grant]
Knot Offline
Weatherzone Addict

Registered: 01/05/2014
Posts: 2560
Loc: Toronto N.S.W
Correction. The distance between top of 500mb bulge and dip is approx 1000 not 6000 metres.
I know what I am trying to say but the words just won't come out right he he he
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#1459644 - 29/03/2018 08:58 Re: NSW/ACT day to day weather [Re: Grant]
Knot Offline
Weatherzone Addict

Registered: 01/05/2014
Posts: 2560
Loc: Toronto N.S.W
Correction 2. lol. I think difference between a bulge and dip at 500mb is a potential max of of 400 or 500 metres. A 400 metre spread wouldn't occur at my latitude. Prob bad weather indication would be around 200 metres less than a 500mb ridge.
Someone in the know please correct me if this is not accurate.
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If you can't change something, there is only one option. Adapt!

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#1459645 - 29/03/2018 09:10 Re: NSW/ACT day to day weather [Re: Grant]
Knot Offline
Weatherzone Addict

Registered: 01/05/2014
Posts: 2560
Loc: Toronto N.S.W
I think the diff between the height of 500mb at Equator and Antarctica is 400 metres without factoring in a bulge or dip.

Real warm day coming up.


Edited by Knot (29/03/2018 09:12)
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#1459649 - 29/03/2018 10:04 Re: NSW/ACT day to day weather [Re: Grant]
Knot Offline
Weatherzone Addict

Registered: 01/05/2014
Posts: 2560
Loc: Toronto N.S.W
Lol. I'll settle for a height difference of between bulge and dip of 1200 metres not 200 at my latitude. I think I am inching closer to the answer he he he lol
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If you can't change something, there is only one option. Adapt!

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#1459663 - 29/03/2018 13:24 Re: NSW/ACT day to day weather [Re: Grant]
DaveM Offline
Meteorological Motor Mouth

Registered: 21/05/2001
Posts: 10132
Loc: Bathurst NSW about 700 m asl
Very warm here for end of March - high so far of about 28.

Full sun, hazy sky, warm breeze.

Thankfully a pleasant 9 this morning keeping the house from warming too much.

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