General August Weather

[NZ Thunderstorm Soc]

Could of been a light frost this morning but no incidence of it this morning.
A fine morning but cloud increasing during the afternoon with light variable winds.
Today's maximum was 12.9C.

[Awhituobs]

I see the low from north has developed further west than the models predicted
its now west of Northland
I could see that trend in the rain radar last night
Barometer has dropped a lot here overnight
good rain bands moving down into the Auckland area now

[Cyclone Tracy]

Wind has picked up here in the last 10 minutes with the wind swinging between ENE & NE. Gusting over 50 knots in the gulf on Tiritiri. Nice convergence zone to my NE.

[David]

6mm here so far. NE gusting around 50 km/h

[Awhituobs]

I see going by the sat image there is the model forecasted low developing to the NE of northland still

[Cyclone Tracy]

A nice 20mm here with that warm front. It should give a good drop into the Hunua ranges and water catchment.

[Richard]

Still looking a bit promising for some rain along the top eastern half of the SI Sunday-Monday, fingers crossed.

[Awhituobs]

yes it looks like the Hunua ranges got a good dollop going by the rain radar
and they might pick up a bit more yet

[JP.]

Driest Ive seen it here with 257mm this year so far, to have not had a major weather system at all this winter is worrisome going into spring.

Very much like that here in Canterbury / Christchurch too, Ive never seen the port hills so dry in August. Really worrying going into spring with it like this. We have had 52.4mm in the last 50 days (1st July to 19th August).

[Awhituobs]

there is some rain in models for eastern SI over the next 10 days...but not drought breaking

[David]

40mm at the Mangatangi catchment in Hunua, well needed! We got 19mm here.

[NZ Thunderstorm Soc]

there is some rain in models for eastern SI over the next 10 days...but not drought breaking

Hope so, getting dry down here as well.
Today's warm temperature doesn't help (19C max for today)

[Awhituobs]

should be some interesting weather tomorrow...thunderstorms, possible tornado...for western NI

[spwill]

A lot of thunderstorms currently across the central and western Tasman. Looks interesting for the western NI tomorrow afternoon and night.

[NZstorm]

A lot of thunderstorms currently across the central and western Tasman. Looks interesting for the western NI tomorrow afternoon and night.

GFS has a front arriving around the middle of the day and then more activity in the evening with colder upper air. Isolated severe squalls/hail with storm activity.

[NZ Thunderstorm Soc]

A mainly fine and warm today, much milder than expected.
Today's maximum was 19C.
High cloud from the NW, but with layers to the NE..
Light variable winds.

[Awhituobs]

Unstable look

[spwill]

Isolated thunder showing up on this mornings incoming front.

[Awhituobs]

Another photo

[Richard]

Couldn't be so different here to what you have Brian, barely a cloud in the sky this morning

[David]

Just hit 500mm for the year, amazing it took so long to get there. Normally >800mm by now.

[spwill]

Clearance is here now, front was a fizzer, Northland got some thunder.

[Awhituobs]

fingers crossed next front
day time heating will help

[Awhituobs]

https://www.stuff.co.nz/national/122506 ... -far-north

[Cyclone Tracy]

18.8c with a 14.4c DP locally. A good batch of colder air at 500 hPa arrives on the west coast of the NI after sunset. Access G3 modelling on the 18Z run looks quite unstable with total totals 55+ with some moisture at 700 hPa.