Thunderstorms 1st-3rd October

[tich]

Amen to that, though it's turning to rain now.

[gllitz]

Yeah, just passed through Burwood...basically covered everything in little white pellets...
Melting now, though...was in our car on the way home...roads were a bit slippery.

[David]

Nice hail shaft visible from a cloud that just passed over - but only 10seconds of about 1-2mm hail fell here though.

[Brassnz]

Hailing in Takapuna.

[ricky]

Just had another brief squally hail shower here in Grey Lynn.. The hail must've been highly electrically charged as the noise levels on the lightning detector went nuts!

[spike_01]

Plenty of new Snow on the lower Tararuas this morning.. Usually when its that low, the Desert Rd get snowed on as well..

Not impressed here.. Grrrrrrrr !!!

[NZstorm]

The key to forecasting thunderstorms in the east of the South Island is the onshore sea breeze. Its quite critical for diurnal convective development. If storms do manage to develop without it, they will be weak and junky. The onshore breezes don't usually fire up untill November.

[Razor]

Sleet in Riccardton right now

[Lawrence]

Sleet with light hail mixed here too,in Christchurch Central.Very Cold

[Paul Mallinson]

The key to forecasting thunderstorms in the east of the South Island is the onshore sea breeze. Its quite critical for diurnal convective development. If storms do manage to develop without it, they will be weak and junky. The onshore breezes don't usually fire up untill November.

Yes, thats fair comment and I would agree with that. The onshore flow provides the elevated dewpoints (moisture).

Yesterday, I was looking for the dewpoints to rise to around 6C in a northeasterly. They did at Timaru but the position of the developing low kept the winds quite northerly in central and Nrn Cny and the air dry. Also, I don't think it cooled aloft quickly enough.

Paul

[David]

Had some strong squalls come through east Auckland this morning, last one about twenty minutes ago gusting up to 85kmh for a short time. Only brief showers totaling 0.3mm from 9am though.

[Razor]

Steady sleety rain for the last hour here, still falling. Very cold. Occasionally looks like the odd snow flake going past the window too

[tich]

Down to 3C within the last hour - must be the coldest air over us now, as it's now colder than it was last night. Haven't seen the Port Hills yet, but surely a dusting on BP.

[tich]

Just been outside for a look - no snow on Port Hills, even though it's been down to 3C with sleet in central Chch.

[Razor]

Definite snowflakes mixed in with the sleet and hail here in central ChCh now!

[jamie]

could any of you take a picture and post it?

[David]

We just had a rumble of thunder, then it started raining with gusts to 85kmh and then it turned into a hailshower! Lasted about 1 minute of hail up to about 3mm diameter.

[Michael]

Totally Dreadful here The rain is almost blowing under the window catches and Wind Whistling nonstop,wished I had a moving camera

[Razor]

Extrememly strong wind blowing through again with sleet after short sunny spell. The closest I've seen to snow this year happens in October!

[gllitz]

radar shows another "mini-burst" a-coming...within the hour, I would say...and looking SW it looks pretty strong...but it will be brief...flakage?

[NZ Thunderstorm Soc]

The key to forecasting thunderstorms in the east of the South Island is the onshore sea breeze. Its quite critical for diurnal convective development. If storms do manage to develop without it, they will be weak and junky. The onshore breezes don't usually fire up untill November.

I would agree to that as well. There was nothing like that here yesterday, sadly it just keep on coming from the NW and was cold at that.


Large Cb to the east of here over BP at the moment.
Yes weve had the odd hail shower go through here at West Melton but of the wintry hail type.

JohnGaul
NZTS

[gopolks]

well the rain had come in again for about five mintues, now the sun is trying to poke its face out again, we had hail in the morning and icy rain, but thats about it, still its the most wintry its been this year.

[spwill]

Has been the odd Thundery Cb across the greater Auckland area this morn and I think most places have seen small hail.

The key to forecasting thunderstorms in the east of the South Island is the onshore sea breeze.

From late November it takes a very good NW to keep the afternoon on shore flow out, December is the favoured month for storms down there.

[David]

Sweet as heavy hailstorm just came through! With a flash of lightning and thunder too!
I measured one stone at 1cm maximum - lasted for 2 - 3minutes and was extremely deafening when I took the following pics
That is the fourth time I've heard thunder today

[Inny Binny]

Nice pics!

We've had basically everything here - rain, sleet, hail, and even snow falling for a few minutes at a time, though quite light.

Looks to be clearing up nicely now.