General September Weather

[NZ Thunderstorm Soc]

Interesting day here with a "Claytons" thunderstorm moving across from 3:30pm.
Rain over night with 18.5mm falling before easing away this morning and then becoming fine but with lots of weak cloud forms about.
Around 3:30pm, another bout of rain with a brief southerly change and a bit of wind. 3.4mm falling from this.
Clearing away this evening but some cloud remaining.

[Cyclone Tracy]

Subsidence over the western Pacific on EC medium term outlook. The atmosphere is not playing the La Nina pacific ocean game at the moment, in fact it looks nothing like La Nina with the standing wave anchored over Africa and the Indian ocean. Strange set up indeed but explains the drought pattern coming back over parts of NZ.

[spwill]

Rainfall last 14 days and cooler than normal upper NI.

[Razor]

Some good rattly hail showers through the night here in Christchurch. Cold tops still in the vicinity too. Not surprised to hear Porters Pass is closed by snow

[spwill]

A cumulus line has developed over east Auckland.

[David]

Random tiny hailstones here for a minute!

[tornado]

Yes some convergence in auckland. actually unstable. metservice should have low risk over auckland too.


looks a drought beginning again which is so concerning. will this ever end?

[tornado]

Random tiny hailstones here for a minute!

some small CBS/ buildiing up this afternoon. havnt had any hail yet. maybe next week.

[David]

Weird, according to rain radar it should be pouring here, but just intermittent showers

[GraemeWi]

Seeing some glaciation on those tops over east Auckland

[tornado]

this convergence set up kind of snuck up on us. a few days ago it wasnt even in the models. now it is. low chance of a isolated thunderstorm. this afternoon/evening before clearing. perhaps its a sign of a better convergance season for us this summer as well?

[Awhituobs]

Decent looking shower train south Auckland/ Drury

[David]

Weird, according to rain radar it should be pouring here, but just intermittent showers

Still looks like it should be raining, but hasn't for around 15 mins. Odd.

[Awhituobs]

I have picked up one lightning strike on that shower line

[tornado]

I have picked up one lightning strike on that shower line

have heard distant thunder

[Awhituobs]

They are very high based storms David
I.e so with the dry air below some of the rain is evaporating

[Awhituobs]

Photo

[David]

2mm here, activity looks weaker now. Cold afternoon, 10.5C currently

[NZ Thunderstorm Soc]

More rain overnight but clearing away this morning to become a fine but cool day because of the light SE wind,with some scattered Cu humulus around
Today's maximum was just 11C.

[Bradley]

The all-time lowest September minimum for Christchurch Airport of -4.4C was broken this morning with at least -4.6C being recorded at the airport!!

[Razor]

Yes a 4.5 degree difference here in Halswell though, barely a frost here it only got to -0.1

[David]

Dropped to 2.3C here this morning. Looking chilly tonight as well.

[Richard]

NW wind arrived around 1.00 and looks to be quite a long run of this wind too

[tornado]

A fine day today. In south Auckland

Yesterday had a small thunderstorm with hail. Intense too. Quite a sneaky set up that was. And the CBs built quite quickly too. Pulse though,
.

[NZ Thunderstorm Soc]

After a frost the day was lovely and fine but with increasing scattered high cloud from the west later in the afternoon.
Today's maximum was 17.6C.