NZ Weather Forum

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.

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...

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.

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

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.

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?

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

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

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

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.

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.

Some photos of the damage in East Tamaki.

An interesting day coming up for much of NZ

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/

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

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.

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

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

Approaching Methven from the north Sent from my SM-A226B using Tapatalk

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

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

Just started raining here in ChCh CBD.

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

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

edit: just heard the first thunder.