Unstable trough

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NZstorm
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Unread post by NZstorm »

I shot off a film on my canon SLR.

This cell developed to the south of Auckland early afternoon. I reckon this cb was about 50km distant with top around 10,000m. The light was poor and the subject caught on zoom, hence quality not great.

Image




Image

a zoomed in shot of developing thunder head. Local convergence, possibly outflow from a nearby cb converging with the general NW flow.
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NZstorm
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Unread post by NZstorm »

My photos above were taken at 12.30pm. The cell developed next to an existing storm. Midday radar placed that storm west of Hamilton. Hence, the cb photographed is more like 80km away from my position. :shock:

That last shot was taken on a 300mm zoom.
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NZstorm
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Unread post by NZstorm »

My photos above were taken at 12.30pm. The cell developed next to an existing storm. Midday radar placed that storm west of Hamilton. Hence, the cb photographed is more like 80km away from my position. :shock:

That last shot was taken on a 300mm zoom. :D
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Michael
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Unread post by Michael »

Rain lasted an hour or so then it got bitterly cold here :o
spwill
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Unread post by spwill »

Nice photos. :D
I think large hail would be likely from the cloud in your photo NZstorm . I did watch that cloud build up from here.
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Michael
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Unread post by Michael »

It would be 90-100km from the CBD to say Te Kowhai as the crow flies :idea:
NZstorm wrote:My photos above were taken at 12.30pm. The cell developed next to an existing storm. Midday radar placed that storm west of Hamilton. Hence, the cb photographed is more like 80km away from my position. :shock:

That last shot was taken on a 300mm zoom. :D
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NZstorm
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Unread post by NZstorm »

With 500hpa(5000m) temp down to -25C, a chilly atmosphere, so large hail a certainty from such a congesting cloud. And I'm sure there would have been hail over Auckland today. Alot of lightning activity indicating some strong cb's about. Anyway, I took this snap of the Ak storm about 2.30pmish. :)

Image
ricky
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Unread post by ricky »

a short burst of hail (~6mm hailstones) observed here in grey lynn about 2:12 pm followed by brief heavy rain, all coincident with quite a lot of i-c lightning :)
Manukau heads obs
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Unread post by Manukau heads obs »

i see you had 64 lightning counts ricky!

http://www.portunus.net.nz/weather/Prime.htm

ps, your www in your profile on this forum for the link to your weather web site
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Brian Hamilton, weather enthusiast. My weather dataEmail: [email protected]
Fujita Phil
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Unread post by Fujita Phil »

Whew!!! Took me a while to post tonight as the snow is just too deep to type ;)

Well what a crop... mostly blue skies with a bracing southerly. Not a drop of moisture all day. You could see it all passing out to sea :evil:

Once again my collegues have lost all faith in me and the weather reports. [-( [-( [-(
There is no such thing as bad weather, just the wrong clothes.
NZ Thunderstorm Soc
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Unread post by NZ Thunderstorm Soc »

Fujita Phil wrote:Whew!!! Took me a while to post tonight as the snow is just too deep to type ;)

Well what a crop... mostly blue skies with a bracing southerly. Not a drop of moisture all day. You could see it all passing out to sea :evil:

Once again my collegues have lost all faith in me and the weather reports. [-( [-( [-(

yeah, same here Phil.
When the southerly went through Christchurch, the wind chill factor was that severe, that I had to put 2 wooly hats on, plus an extra jersey underneath the sou-wester I had on.My feet became that cold that when I took my shoes off, I had to put them, IN THE FIRE, to actually warm them up. :shock:
Never the less,I was able to keek warm despite the atrocious conditions outside. If the power went off, thank goodness, I have the AGA cokker to keep me warm :)


JohnGaul
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Thunder
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Unread post by Thunder »

Thanks for the photo's Steven and Brian! ;)

Good to see film being used! Despite my digital camera being great I'd like to get some slide film and have a go at what I can get next time a thunderstorm comes round these parts, might be a while? :(
But then again there was thunderstorms, 2cm hail and a funnel cloud on 22nd of August 1999 here in Chch and that's 46 days away!! (only 6 weeks and 6 days - for the year 2004 of course), not that far away ;)
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Aaron Wilkinson
Manukau heads obs
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Unread post by Manukau heads obs »

we had a big pressure rise overnight......but no wind....
i.e the new high developing and moving in with no opposition!!
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Brian Hamilton, weather enthusiast. My weather dataEmail: [email protected]
Thunder
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Unread post by Thunder »

Here's a better photo of that mountain range. Still, a bit hazy due to the morning conditions and quality suffers slightly due to it being taken on full zoom.
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Aaron Wilkinson
Thunder
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Unread post by Thunder »

Must be an upper cold pool or something brushing the east coast of the South Island. Some wispery tops up above Chch now, there maybe some shallow Cb's about, no lightning but there could be a few small hail showers out on the peninsula. I think it's going to move offshore soon.

Just taken some pics, shows wispery tops etc above and another one of the Alps below. In the Alps one there looks to be an invasion of huge blow flies near the left hand side of the picture. :D

Nahh! More like pigeons! :lol:
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Aaron Wilkinson
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Unread post by NZ Thunderstorm Soc »

Aaron J Wilkinson wrote:Must be an upper cold pool or something brushing the east coast of the South Island. Some wispery tops up above Chch now, there maybe some shallow Cb's about, no lightning but there could be a few small hail showers out on the peninsula. I think it's going to move offshore soon.

Just taken some pics, shows wispery tops etc above and another one of the Alps below. In the Alps one there looks to be an invasion of huge blow flies near the left hand side of the picture. :D

Nahh! More like pigeons! :lol:

Yes, Aaron,
I saw that satpic today. It looks like a band of thunderstorms moving over Christchurch. Not likely as pressures were too high, although the cirrus did look quite impressive.


JohnGaul
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Michael
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Unread post by Michael »

Lots of sferics on the radio tonight as dxing is good too so some could be from the low to the north of us ;)
tich
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Unread post by tich »

Some wispery tops up above Chch now, there maybe some shallow Cb's about, no lightning but there could be a few small hail showers out on the peninsula.
Nothing on the Noon and 3PM radars. Looked interesting though.
Thunder
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Unread post by Thunder »

Yeah, looks as if nothing happened anywhere. Had the surface temp been up a bit more things could've happened, the dewpoint would've also needed to be much higher (1C today) so there was no chance of anything happening.

But it did look intresting though.
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Aaron Wilkinson