General October Weather

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NZ Thunderstorm Soc
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Re: General October Weather

Unread post by NZ Thunderstorm Soc »

Warm and sunny down here and 24C.
Some cloud to the west but rather flat.
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Richard
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Re: General October Weather

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Yes, feeling like summer alright. Another day of NW winds here today and third day in a row over 24deg, 25.4deg today.
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Re: General October Weather

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I see its 25C in Invercargill. Warmest spot in North Island is Gisborne on 22C.
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Re: General October Weather

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Invercargill does well with a northerly wind
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Re: General October Weather

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Regarding the thunderstorm on Thursday night here, My wife, Andrea sent a message to MetService on her Facebook page to enquire why the thunderstorm wasn't mentioned on their Thunderstorm Risk Warning Page for the day. She allowed me to put their reply on the forum.

Here is their response

"Hi Andrea. Yes, that thunderstorm formed in situ, and was not expected.
Thunderstorms are difficult to forecast, and rely on a lot of different 'ingredients' coming together at once. Our thunderstorm charts show risk areas, whereas the ingredients for thunderstorms seem most likely to come together. However, sometimes everything looks to be adding up, but they don't happen.Equally,sometimes weather models may not portray one of the factors correctly, and this can mean thunderstorms do happen when not expected. This was the case yesterday. Of course, our aim is to be as accurate as possible, but there is an inherent margin of error in the work that we do. Thunderstorms are one of those things that be quite difficult to forecast. We do appreciate you writing in with your feedback, and I hope this can clear things up for you.
CF"
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Richard
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Re: General October Weather

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Over the last year or so there's been more storms here on days without a low risk than with. Then there was CHCH that morning a week or so back
as well.

I dont understand why there's been so much NW wind here over the last day or so considering there's only one isobar over NZ
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NZstorm
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Re: General October Weather

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NZ Thunderstorm Soc wrote: Mon 30/10/2017 17:58 Regarding the thunderstorm on Thursday night here[/b] CF"
I had studied that set up in the 2 days prior and the modelling was showing the potential instability (when you looked at the model sounding) but less clear was a forcing mechanism. But as we know now a southerly change came up the coast to trigger the storm.
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Re: General October Weather

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NZstorm wrote: Mon 30/10/2017 19:33
NZ Thunderstorm Soc wrote: Mon 30/10/2017 17:58 Regarding the thunderstorm on Thursday night here[/b] CF"
But as we know now a southerly change came up the coast to trigger the storm.
In a Jim Hickey sort of sense, there was a rodent out there and come up and triggered things off. 8-o
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Richard
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Re: General October Weather

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Looking a lot more promising today i think, the NW has buggered of and what little cloud there is around the hill is stationary unlike the lat two mornings.
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Re: General October Weather

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Richard wrote: Tue 31/10/2017 06:20 Looking a lot more promising today i think, the NW has buggered of and what little cloud there is around the hill is stationary unlike the lat two mornings.
The lapse rates are a bit better today for deeper convection over upper South Island. You would be better off seeing lots of low cloud in the morning as you want to be seeing the moisture.

Tomorrow looks potentially a very convective day with lapse rates 7.2C lower half of the South Island.
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Re: General October Weather

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That moisture would have to come in from the east once the heating gets going, now that the NW has gone.
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Re: General October Weather

Unread post by NZ Thunderstorm Soc »

Some Cu towers going up inland from here, the one near Mt. Peel could go thundery.
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Re: General October Weather

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Hearing thunder to the west, some spectacular cloud formations right around the foothills.
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Re: General October Weather

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Re: General October Weather

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Over the Northern Tararua Ranges:
DSCF6214.jpg
Cbs near Palmerston North:
DSCF6217.jpg
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Wellington southerly front timelapse: www.youtube.com/watch?v=MBl3hsuIg2Q
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Re: General October Weather

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NZ Thunderstorm Soc wrote: Tue 31/10/2017 16:27 the one near Mt. Peel could go thundery.
It didn't
Nice pictures there Richard....and thunder 81
Cu congestus towers going up but fading away as quick as they rise.
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Re: General October Weather

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Could see all the cb tops down in the lower north island from here this evening.
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Thunder081
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Re: General October Weather

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Yeah metconnect costs too much it is not a viable option for us weather enthusiasts you'd think that since in NZ is becoming more and more of a nanny state that the govt (has anyone seen any indication that the new govt supports open weather data?) would be making this data more open for public safety.
Wellington southerly front timelapse: www.youtube.com/watch?v=MBl3hsuIg2Q
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NZstorm
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Re: General October Weather

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Thunder081 wrote: Tue 31/10/2017 21:44 Yeah metconnect costs too much it is not a viable option for us weather enthusiasts you'd think that since in NZ is becoming more and more of a nanny state that the govt (has anyone seen any indication that the new govt supports open weather data?) would be making this data more open for public safety.
I was thinking a new government could be an opportunity but then again they likely would not want to interfere with the cash flow from Met Service.

Also, the Met Service appear to have a protectionist philosophy. I tried to buy Met Flight recently to access the metars ( for surface obs at airports like Milford Sound) and they wouldn't sell it to me because I was not a pilot.
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Re: General October Weather

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NZstorm wrote: Wed 01/11/2017 06:10
Thunder081 wrote: Tue 31/10/2017 21:44 Yeah metconnect costs too much it is not a viable option for us weather enthusiasts you'd think that since in NZ is becoming more and more of a nanny state that the govt (has anyone seen any indication that the new govt supports open weather data?) would be making this data more open for public safety.
I was thinking a new government could be an opportunity but then again they likely would not want to interfere with the cash flow from Met Service.

Also, the Met Service appear to have a protectionist philosophy. I tried to buy Met Flight recently to access the metars ( for surface obs at airports like Milford Sound) and they wouldn't sell it to me because I was not a pilot.
Yeah I definitely agree that they have a protectionist philosophy there was a guy who made a rain radar for a uni project but when he told metservice about it they got all shitty at him. You can see some photos of it here: https://www.facebook.com/photo.php?fbid ... =3&theater
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Re: General October Weather

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Can't see what issue MS have with him doing this!

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Re: General October Weather

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03Stormchaser wrote: Thu 02/11/2017 18:56 Can't see what issue MS have with him doing this!

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Well maybe they were initially but that's what one of my friends who knows the guy told me. In this document about the project (very interesting btw) it says that metservice did assist him by providing raw radar data and access to radar accumulation products.
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Re: General October Weather

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Amazing that they managed to capture that Ardmore tornado, must have been satisfying seeing those results

Easy to forget how incredibly complicated some of the technology we rely on is, after reading that paper haha
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Re: General October Weather

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I see it was Auckland's cloudiest October on record with 73% of normal sunshine hours, could certainly believe that. Was a dreary month!
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Re: General October Weather

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Some interesting numbers for October 2017

Queenstown only recorded 5mm and Wanaka 3mm for the month.

Queenstown had 264hours of sunshine compared to Auckland Mangere 129hours. Both new October records.

Cromwell recorded 28.6C on the 19th and 30C on the 20th.
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