General September Weather

03Stormchaser · Unread post by **03Stormchaser** » Thu 31/08/2023 19:35

Latest outlook is up

spwill · Unread post by **spwill** » Thu 31/08/2023 21:37

03Stormchaser wrote: Thu 31/08/2023 19:35 Latest outlook is up

Well done on your outlooks

The first chase day of the new season for the upper North Island is in the models for Tuesday, still 5 days out though.

NZ Thunderstorm Soc · Thu 31/08/2023 22:59

After an absence of snow last winter,it did snow on the first day of spring last year. I don't think it will happen this year.
September could a wetter month than August, interesting to see how things pan out.

snowstormwatcher · Unread post by **snowstormwatcher** » Fri 01/09/2023 07:10

NZ Thunderstorm Soc wrote: Thu 31/08/2023 22:59 After an absence of snow last winter,it did snow on the first day of spring last year

That was in 2020, we had around 3-4cm here on the ground at 100m asl.
Been a poor winter for low level snow here, lots at higher altitude though.

David · Unread post by **David** » Fri 01/09/2023 09:21

3.7C here to start off September but certainly looks like a milder pattern moving in.

mikestormchaser · Unread post by **mikestormchaser** » Fri 01/09/2023 13:06

spwill wrote: Thu 31/08/2023 21:37
Well done on your outlooks
The first chase day of the new season for the upper North Island is in the models for Tuesday, still 5 days out though.

Yes happy first meteorological day of spring! Lovely warm day in Canterbury today, working out in charing cross on a weather board house. Nice to be outside.

Thunder season is nearing, normally starts mid October for this region when the NE sea breeze kicks in.

North island does look like their could be some chances in the next week as you say spwill

NZ Thunderstorm Soc · Fri 01/09/2023 22:46

The first day of Meteorological spring was a nice pleasant day after a light frost. Not much wind.
Thin high cloud increasing from the NW with a light arch developing this afternoon.
Today's maximum was 19.4C.

spwill · Unread post by **spwill** » Sat 02/09/2023 08:12

A thunderstorm risk for Northland/Auckland Monday morning along frontal activity in response to upper level cooling.

NZ Thunderstorm Soc · Sat 02/09/2023 23:14

A rather cloudy day on the second day of spring here with cloud thickening in as the afternoon wore on and into the evening.
Light winds from the east. A wee bit of drizzle before dawn. Today's max was 15.2C however.

spwill · Unread post by **spwill** » Sun 03/09/2023 08:39

Auckland was fine yesterday with 19.2C maximum at the airport. The frontal activity to the north is struggling to come south.

Looking ahead, Tuesday looks like messy breezy NE conditions here now.

NZ Thunderstorm Soc · Sun 03/09/2023 22:57

A rather cloudy day on the third day of spring here with cloud thickening in as the afternoon wore on and into the evening.
Light winds from the east. Today's max was 12C.

NZ Thunderstorm Soc · Mon 04/09/2023 22:55

A rather cloudy day on the fourth day of spring here,
Light winds from the east. Today's max was 16C, when the sun popped out around noon today.

Bradley · Unread post by **Bradley** » Tue 05/09/2023 10:45

Something brewing the Southern ocean for around the 12/09/23, similar setup to early October last year with a large high pressure system sitting over SE Australia and some deep low pressure systems north of Antarctica dredging up some seriously cold air. So not quite as cold but with more moisture...

darcyplumb · Unread post by **darcyplumb** » Tue 05/09/2023 11:04

Bradley wrote: Tue 05/09/2023 10:45 Something brewing the Southern ocean for around the 12/09/23, similar setup to early October last year with a large high pressure system sitting over SE Australia and some deep low pressure systems north of Antarctica dredging up some seriously cold air. So not quite as cold but with more moisture...

I was going through photos on my phone with the kids this morning and it reminded me that we had snow flurries in Ashburton in October last year! There’s still hope yet for the snow lovers amongst us!

David · Unread post by **David** » Tue 05/09/2023 21:26

Been a damp few days here, up to 43mm across yesterday and today.

NZ Thunderstorm Soc · Tue 05/09/2023 22:30

Not damp down here with only 1.2mm falling here in the last 10 days.
Another cloudy day but it was fine around noon with today's maximum recorded around that time.
16.3C the max for today around that time but then it was mostly quite cool with a light NE with the temperature around the 13C mark for most of the day.

Andy · Unread post by **Andy** » Wed 06/09/2023 05:25

NZ Thunderstorm Soc wrote: Tue 05/09/2023 22:30 Not damp down here with only 1.2mm falling here in the last 10 days.
Another cloudy day but it was fine around noon with today's maximum recorded around that time.
16.3C the max for today around that time but then it was mostly quite cool with a light NE with the temperature around the 13C mark for most of the day.

Only 2mm in Alexandra since the 3rd August.

Nev · Unread post by **Nev** » Wed 06/09/2023 09:05

47mm here so far since Monday, which is about half our normal Sep rainfall.

(MS have 51mm at Whangaparaoa, 49mm at Whenuapai Aero and 34mm at Auckland Aero)

NZ Thunderstorm Soc · Wed 06/09/2023 14:17

Andy wrote: Wed 06/09/2023 05:25
NZ Thunderstorm Soc wrote: Tue 05/09/2023 22:30 Not damp down here with only 1.2mm falling here in the last 10 days.
Only 2mm in Alexandra since the 3rd August.

Waimate and Oamaru have had only 2mm and 1mm of rain since the 1st of August according to this morning's Timaru Herald.

tich · Unread post by **tich** » Wed 06/09/2023 18:44

Dark cloud to the south of Chch around mid-late afternoon - 4.30pm radar showed blue over Banks Peninsula, with a small patch of red just off Birdlings Flat.

NZ Thunderstorm Soc · Wed 06/09/2023 22:52

Generally, a fine day here with light winds this morning but from just before 1pm, a strong NW flow developed with a warming of temperatures when the high cloud moved away allowing the sun to shine through. 21.7C the maximum for today.
Generally a NW day with the wind easing away at times.
Fine mild evening with it being 15C at 10pm.

NZ Thunderstorm Soc · Thu 07/09/2023 23:29

Another fine and sunny day with light winds and warm this afternoon with a light southerly.
23.6C here for today. Another fine day tomorrow looks likely on the cards

NZ Thunderstorm Soc · Fri 08/09/2023 23:37

Blue dome day here today with no cloud to be seen.
light NE and a maximum of 18.4C.
New house going up next door.
If they have a black roof no doubt the maximum temperatures recorded here will be higher than with previous recordings at this site.
There should be a ban on black roofs as that enhances heat rising making the weather warmer?
I would like to know how many black roof houses are in places like Phoenix in Arizona or Dallas in Texas?

TonyT · Unread post by **TonyT** » Sat 09/09/2023 09:23

NZ Thunderstorm Soc wrote: Fri 08/09/2023 23:37 Blue dome day here today with no cloud to be seen.
light NE and a maximum of 18.4C.
New house going up next door.
If they have a black roof no doubt the maximum temperatures recorded here will be higher than with previous recordings at this site.
There should be a ban on black roofs as that enhances heat rising making the weather warmer?
I would like to know how many black roof houses are in places like Phoenix in Arizona or Dallas in Texas?

A black body will absorb more radiant energy than a white one (daytime), but it will also release more as well (night time). Swings and roundabouts.

NZ Thunderstorm Soc · Sat 09/09/2023 22:52

Another blue dome day here today with no cloud to be seen.
light NE and a maximum of 19.6C.

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