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#1485950 - 18/01/2019 21:03 Re: NSW / ACT - Severe Mid Summer Heatwave - January 15-19 2019 [Re: Adaminaby Angler]
Eigerwand Offline
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Registered: 28/05/2012
Posts: 398
Originally Posted By: Adaminaby Angler
This particular heatwave was indeed a rather South-Western NSW event—hence more adequate heat down this way than up north in the Central Tablelands at similar altitudes.

Hottest to Coolest; Snowy Monaro Shire:

Cooma Visitors Centre (778 m AMSL) = 39.5° C;

Cooma AP (930 m AMSL) = 37.9° C;

Anglers Reach (Here; 1,280 m AMSL) = 34.7° C;

Thredbo Village (1,380 m AMSL) = 33.0° C;

Cabramurra (1,482 m AMSL) = 32.3° C;

Perisher (1,738 m AMSL) = 30.1° C;

Thredbo Top Station (1,957 m AMSL) = 27.2° C



Actually, I think the heat in the CT’s actually fits in quite well to those temps in the Snowies, at least when looking at the higher altitude sites of the CT’s. For example, the highest maximums for this event at the big three high altitude sites on the CT’s recorded the following:

Mt Boyce (1080m), 36.1C

Orange AP (945m), 37.5C

Oberon (1088m), 35.5C

Remarkable really how uniformally consistent between not only the locations above but between them and the Snowies. What seems to stick out a bit for mind, and I think someone else mentioned it earlier, is that the slightly lower elevation sites like Bathurst (745m) for example maxing out at 38.1C, aren’t as far above the higher altitude locations as would be usually expected from not only altitude but the differences in topography of the higher altitude sites, ie, more air flow.

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#1485952 - 18/01/2019 21:11 Re: NSW / ACT - Severe Mid Summer Heatwave - January 15-19 2019 [Re: Steve777]
Marts Offline
Weatherzone Addict

Registered: 10/01/2006
Posts: 2258
Loc: Mona Vale, northern beaches , ...
Still reading 27.4c on the eastern side of my place with no wind at all.
Good to hear the southerly is on it's way and will be interesting what the temp does when it gets here.
I hope it doesn't do what has happened to the south of here, jeez we cant win.

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#1485954 - 18/01/2019 21:29 Re: NSW / ACT - Severe Mid Summer Heatwave - January 15-19 2019 [Re: Steve777]
Sidney Online   content
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Registered: 20/12/2013
Posts: 699
Loc: Macquarie fields ( South west ...
Campbelltown got a decent drop in temp so doubt we'd be seeing warm ups from his southerly.

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#1485955 - 18/01/2019 21:41 Re: NSW / ACT - Severe Mid Summer Heatwave - January 15-19 2019 [Re: Steve777]
Sidney Online   content
Weather Freak

Registered: 20/12/2013
Posts: 699
Loc: Macquarie fields ( South west ...
Wow nevermind went down 1c then up 2c.

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#1485957 - 18/01/2019 21:47 Re: NSW / ACT - Severe Mid Summer Heatwave - January 15-19 2019 [Re: Steve777]
Steve777 Offline
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Registered: 20/10/2011
Posts: 4779
Loc: Artarmon (Sydney North Shore)
I think the real Southerly is a way off. The winds on the South Coast are N-NE. The 'Southerly' on the Illawarra looks like a kink in the isobars like we've had a couple of times in the last few days.

The cicadas are going - don't often hear that at night. It's about 29 degrees indoors and out.

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#1485958 - 18/01/2019 21:50 Re: NSW / ACT - Severe Mid Summer Heatwave - January 15-19 2019 [Re: Sidney]
Jac0b Offline
Weather Freak

Registered: 17/12/2018
Posts: 77
A southerly that increases temperatures should be called a "confused southerly" - correct wind direction but incorrect effect on air temps.

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#1485960 - 18/01/2019 21:53 Re: NSW / ACT - Severe Mid Summer Heatwave - January 15-19 2019 [Re: Steve777]
Petar @ Sdny Offline
Weather Freak

Registered: 09/03/2007
Posts: 591
Loc: South West Sydney
Originally Posted By: Steve777
I think the real Southerly is a way off. The winds on the South Coast are N-NE. The 'Southerly' on the Illawarra looks like a kink in the isobars like we've had a couple of times in the last few days.

The cicadas are going - don't often hear that at night. It's about 29 degrees indoors and out.


True Steve.

The real southerly will come in early tomorrow.

But anything to reduce temps is welcome. SW through Wattamolla around 9.30 pm.
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#1485962 - 18/01/2019 21:54 Re: NSW / ACT - Severe Mid Summer Heatwave - January 15-19 2019 [Re: Steve777]
Sidney Online   content
Weather Freak

Registered: 20/12/2013
Posts: 699
Loc: Macquarie fields ( South west ...
Oh just had a look at charts. The real southerly doesn't come till 8am tommorow morning.

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#1485963 - 18/01/2019 22:01 Re: NSW / ACT - Severe Mid Summer Heatwave - January 15-19 2019 [Re: Sidney]
Steve777 Offline
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Registered: 20/10/2011
Posts: 4779
Loc: Artarmon (Sydney North Shore)
Originally Posted By: Sidney
Oh just had a look at charts. The real southerly doesn't come till 8am tommorow morning.


That's my reading too. Might be a bit earlier but it will be a hot night.

EDIT: 30 knot Westerly at the Airport.
EDIT2: clearly visible on Doppler wind.


Edited by Steve777 (18/01/2019 22:08)

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#1485965 - 18/01/2019 22:05 Re: NSW / ACT - Severe Mid Summer Heatwave - January 15-19 2019 [Re: Steve777]
EddyG Offline
Meteorological Motor Mouth

Registered: 19/12/2008
Posts: 5327
Loc: Port Stephens NSW
It looks like the southerly hasn't even rounded Gabo Island as yet. Looks to be a shallow southerly for this neck of the woods.


Edited by EddyG (18/01/2019 22:05)
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#1485968 - 18/01/2019 22:18 Re: NSW / ACT - Severe Mid Summer Heatwave - January 15-19 2019 [Re: Sidney]
lightning chaser Offline
Weather Freak

Registered: 18/06/2007
Posts: 533
Loc: nowra NSW
Originally Posted By: Sidney
Wow check out that line impacting jervis bay.


99 % cloud to cloud lightning unfortunately. I copped 30 seconds of torrential rain and 90 km/ hr + wind at sanctuary point but only managed a few average bolts on video just prior to the rain starting. Nothing like the bolt fest last night ( which I missed out on) thanks to not checking the radar till 8 pm.

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#1485969 - 18/01/2019 22:19 Re: NSW / ACT - Severe Mid Summer Heatwave - January 15-19 2019 [Re: Steve777]
Wave Rider Offline
Meteorological Motor Mouth

Registered: 27/01/2014
Posts: 7188
The confused southerly has made conditions worse here. Still 26°C but now a SWer blowing.

That lightshow earlier was pretty amazing (I watched from Kiama) but yes not too many bolts.


Edited by Wave Rider (18/01/2019 22:20)
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#1485971 - 18/01/2019 22:26 Re: NSW / ACT - Severe Mid Summer Heatwave - January 15-19 2019 [Re: Steve777]
Sidney Online   content
Weather Freak

Registered: 20/12/2013
Posts: 699
Loc: Macquarie fields ( South west ...
31.6c at my nearest AWS. Power bill not going to like this. Wish solar panels worked at night.

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#1485974 - 18/01/2019 22:28 Re: NSW / ACT - Severe Mid Summer Heatwave - January 15-19 2019 [Re: Steve777]
Sidney Online   content
Weather Freak

Registered: 20/12/2013
Posts: 699
Loc: Macquarie fields ( South west ...
Cant believe it. Sydney just hit its daily top with 32.1C.

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#1485975 - 18/01/2019 22:29 Re: NSW / ACT - Severe Mid Summer Heatwave - January 15-19 2019 [Re: Steve777]
Jimi Offline
Weatherzone Addict

Registered: 15/03/2004
Posts: 1067
Loc: Cammeray
32.1C at Obs Hill though it could have gone higher than this. The max/min column on the obs page isn’t showing the after-dark spike - hope they don’t lose it and are left with only the 10 min data.

The BOM was right with the forecast after all!

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#1485976 - 18/01/2019 22:33 Re: NSW / ACT - Severe Mid Summer Heatwave - January 15-19 2019 [Re: Jimi]
Sidney Online   content
Weather Freak

Registered: 20/12/2013
Posts: 699
Loc: Macquarie fields ( South west ...
Originally Posted By: Jimi


The BOM was right with the forecast after all!


Hey maybe Penrith will sneak a 45c later poke .

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#1485978 - 18/01/2019 22:36 Re: NSW / ACT - Severe Mid Summer Heatwave - January 15-19 2019 [Re: Steve777]
Steve777 Offline
Weatherzone Addict

Registered: 20/10/2011
Posts: 4779
Loc: Artarmon (Sydney North Shore)
Here's the double front from the TH Doppler radar a little while ago:



Re OH spike, I sort of prophesied it earlier today, but only mentioned it as a possibility. The spike will go into the record, not just the 10 minute readings, making the forecast almost correct (needed to go up another degree).

The change reached here. It was quite windy for a while but it seems to have died away.


Edited by Steve777 (18/01/2019 22:42)

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#1485980 - 18/01/2019 22:37 Re: NSW / ACT - Severe Mid Summer Heatwave - January 15-19 2019 [Re: Steve777]
Jimi Offline
Weatherzone Addict

Registered: 15/03/2004
Posts: 1067
Loc: Cammeray
All we saw was the 10:20pm temp of 32.1C. The max is probably more than 32.1C as it’s unlikely it occurred spot on 10:20pm. Given the moderate spike, it may have even reached the 33

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#1485981 - 18/01/2019 23:34 Re: NSW / ACT - Severe Mid Summer Heatwave - January 15-19 2019 [Re: Steve777]
eauetsoleil Offline
Weather Freak

Registered: 03/01/2016
Posts: 319
Loc: Bexley North
A hot southerly change in Sydney tonight.
One for the record books?

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#1485989 - 19/01/2019 05:22 Re: NSW / ACT - Severe Mid Summer Heatwave - January 15-19 2019 [Re: Eigerwand]
Adaminaby Angler Offline
Weather Freak

Registered: 26/03/2018
Posts: 187
Loc: Anglers Reach NSW; 1,280 m AMS...
Originally Posted By: Eigerwand
Actually, I think the heat in the CT’s actually fits in quite well to those temps in the Snowies, at least when looking at the higher altitude sites of the CT’s. For example, the highest maximums for this event at the big three high altitude sites on the CT’s recorded the following:

Mt Boyce (1080m), 36.1C

Orange AP (945m), 37.5C

Oberon (1088m), 35.5C

Remarkable really how uniformally consistent between not only the locations above but between them and the Snowies. What seems to stick out a bit for mind, and I think someone else mentioned it earlier, is that the slightly lower elevation sites like Bathurst (745m) for example maxing out at 38.1C, aren’t as far above the higher altitude locations as would be usually expected from not only altitude but the differences in topography of the higher altitude sites, ie, more air flow.

Adequate point regarding the topographic advantage(s), but this region still surpassed the CT's in terms of altitudinal-relative heat; I'm a good ~200 m higher Oberon, yet it only recorded 35.5° C vs. 34.7° C for Anglers (let alone Adaminaby town). Likewise Cooma VC and Cooma AP vs. Bathurst AP and Orange AP—similar applies.

Thereby, if you meant to say that the lapse rate was much swifter in the Snowies than in the CT's, then you are indeed correct.
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