T-Storms & Tornadoes - Apr 9-13

spwill · Unread post by **spwill** » Sat 08/04/2023 19:40

The high cloudiness cleared out early here for a fine sunny day, max temps in the low 20s.
A lot of instability showing in the modelling for later tomorrow around the upper North Island, thunderstorm activity on the cards tomorrow evening.

Nev · Unread post by **Nev** » Sun 09/04/2023 08:09

Here's this morning's TS update for this arvo/evening's active trough. MS maintaining a moderate risk for the upper North Island for T-storms, strong winds, hail and the odd possible tornado...

spwill · Unread post by **spwill** » Sun 09/04/2023 09:37

The instability numbers are good in the GFS, thunderstorm development will come down to how good the lifting mechanism is later today.

More thunderstorms in the modelling for Tuesday.

Razor · Unread post by **Razor** » Sun 09/04/2023 11:59

Very blustery nor Easter coming though Woodend Beach and Kairaki. Seen a couple of trees topple in the forest

Storm Struck · Unread post by **Storm Struck** » Sun 09/04/2023 12:09

Razor wrote: Sun 09/04/2023 11:59 Very blustery nor Easter coming though Woodend Beach and Kairaki. Seen a couple of trees topple in the forest

Not too bad in Christchurch yet up around 35kmh but I'm sure will pick up into the afternoon.
Abit of instability about for most of Aotearoa tomorrow and today further north, an upper trough crosses down from the north tomorrow afternoon bringing heavy showers and a risk of thunderstorms on the plains.

NZ Thunderstorm Soc · Sun 09/04/2023 18:34

Skies looking dark and heavy looking as the evening settles in.
No wind. The calm before the storm, maybe?
Interesting to see what happens tomorrow with the ULT and associated systems as they move across from the west?

David · Unread post by **David** » Sun 09/04/2023 20:14

Bit of a non-event here so far, not even 1mm of showers yet...

cbm · Unread post by **cbm** » Sun 09/04/2023 20:28

David wrote:Bit of a non-event here so far, not even 1mm of showers yet...

That line off the Manukau looks pretty nasty but this system may miss populated Auckland which I'm sure few will mind given what's happened this year so far. Looking like will get something more intense here in the next hr.

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spwill · Unread post by **spwill** » Sun 09/04/2023 23:31

Looks like a tornado event for parts of South Auckland earlier this evening. Looks less damaging than the Papatoetoe tornado 2 years ago.

Nev · Unread post by **Nev** » Mon 10/04/2023 06:55

Happened about 9pm last night. Wonder if it may have been a microburst?

'Tornado rips roofs off, fences down and tosses property in East Tamaki and Flat Bush, Auckland' - NZ Herald

https://www.stuff.co.nz/national/300849 ... ding-sound

David · Unread post by **David** » Mon 10/04/2023 07:32

Really interesting to see that as there weren’t any active thunderstorms around at the time as far as I’m aware. Picked up almost 10mm yesterday evening.

spwill · Unread post by **spwill** » Mon 10/04/2023 08:59

I seem to remember the Albany and Papatoetoe tornadoes were from non thunderstorm Cbs.
With last night's event the damage path is quite long and is about a house or two wide so looks like a tornado. There was another tornado in the East Tamaki suburb just 2km away in 2020 and nearby the Papatoetoe tornado in 2021.
I had a look at the damage path this morning and will post some photos. Damage is light but still a bit of a clean up for those affected.

spwill · Unread post by **spwill** » Mon 10/04/2023 09:04

Some photos of the damage in East Tamaki.

Richard · Unread post by **Richard** » Mon 10/04/2023 09:26

An interesting day coming up for much of NZ

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ScottyD · Unread post by **ScottyD** » Mon 10/04/2023 10:31

I went for a short drive this morning and had a look. You can clearly see a narrow path of damage. There's a NZ Herald article, with a video that shows where damage has been reported.

https://www.nzherald.co.nz/nz/tornado-r ... 2BJFUZOTQ/

RODALCO · Unread post by **RODALCO** » Mon 10/04/2023 14:45

1425h Heavy downpour Mt Wellington hwy, outside Sylvia Park. Lasted only about 5 minutes.

Storm Struck · Unread post by **Storm Struck** » Mon 10/04/2023 14:49

Quite an active trough coming down from the north, reports of lots of lightning activity and torrential rain in the upper south Nelson etc.
Reports of a Tornado too unsure where, power out from Golden Bay to parts of Nelson.

Thunderstorms in a torrential band moving into canterbury now, currently sunny 19C with building clouds.

Razor · Unread post by **Razor** » Mon 10/04/2023 15:07

Storm approaching fast from the north in Kairaki. A sight to behold

spwill · Unread post by **spwill** » Mon 10/04/2023 15:14

Intense rain here at Pokéno near Bombay. Just had a very close lightning strike, the lightning flash and thunder at the same time.

Dean. · Unread post by **Dean.** » Mon 10/04/2023 15:16

Approaching Methven from the north

20230410_150645.jpg

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Razor · Unread post by **Razor** » Mon 10/04/2023 15:22

And thunder.... approaching from the NW hitting coastal easterly breeze

mikestormchaser · Unread post by **mikestormchaser** » Mon 10/04/2023 15:23

Pretty impressive line crossing from north to south. Don't think iv seen that before. Something you would normally see with a SW change in Canterbury

JP. · Unread post by **JP.** » Mon 10/04/2023 15:24

Just started raining here in ChCh CBD.

Nev · Unread post by **Nev** » Mon 10/04/2023 15:31

Getting a few rumbles of thunder and heavy rain here atm...

Storm Struck wrote: Mon 10/04/2023 14:49 Quite an active trough coming down from the north, reports of lots of lightning activity and torrential rain in the upper south Nelson etc.
Reports of a Tornado too unsure where, power out from Golden Bay to parts of Nelson.

Thunderstorms in a torrential band moving into canterbury now, currently sunny 19C with building clouds.

That possible tornado was in the Upper Moutere area (between Motueka and Richmond) at around 1:20pm...

'Wild weather: Tornado strikes Nelson, lifting roofs and downing trees' - NZ Herald

https://www.stuff.co.nz/national/weathe ... le-tornado

Orion · Unread post by **Orion** » Mon 10/04/2023 15:47

Getting very dark here over the past ten minutes or so.
Breeze south-easterly. Temp. 16.7°C.

edit: just heard the first thunder.

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T-Storms & Tornadoes - Apr 9-13

T-Storms & Tornadoes - Apr 9-13

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