General September Weather
Posted: Fri 31/08/2018 12:46
Looking like a cold start to September with a spell of southeasterly airflow, and plenty of anticyclones to follow during the month.
Good. We need plenty of sunshine down here
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Re: General September Weather
Posted: Fri 31/08/2018 17:13
Re: General September Weather
Posted: Fri 31/08/2018 17:21
No thanks. Dial in a lot of NW winds please.
Re: General September Weather
Posted: Sat 01/09/2018 11:14
Mod Note:
Have moved a few of this morning's posts to the new 'Cold outbreak 2nd-3rd Sep' thread.
Have moved a few of this morning's posts to the new 'Cold outbreak 2nd-3rd Sep' thread.
Re: General September Weather
Posted: Sat 01/09/2018 11:55
Looks like some more action for the upper north overnight!
Metservice wrote: Issued at: 10:56am Saturday 1 Sep 2018
A front moves quickly across the north of the country overnight Saturday and Sunday morning. A disturbed west to northwest flow spreads onto central and northern New Zealand following the front.
There is a moderate risk of thunderstorms about Northland, Auckland and the Coromandel Peninsula before dawn, and about the Bay of Plenty during the morning. These thunderstorms have the potential to bring localised heavy rain of 10 to 25 mm/hr, strong winds gusting 90 to 110km/hr and the possibility of a small tornado about localised eastern coastal areas. There is also the possibility one or two of these thunderstorms may become SEVERE.
In the west of the North Island from Waikato to Taranaki, there is a moderate risk of thunderstorms mostly during the morning, but in Taranaki the risk may start before dawn. These thunderstorms could bring localised heavy rain of 10 to 25 mm/hr, strong winds gusting 90 to 110 km/hr and small hail.
A lower risk of thunderstorms covers remaining areas of the North Island north of Manawatu and also Buller, Nelson and northern Marlborough. No other areas of significant convection or thunderstorms are expected.
Re: General September Weather
Posted: Sat 01/09/2018 14:18
Yes, looking a very interesting set up.
Sub tropical and polar Jets are now interacting in the Tasman. https://earth.nullschool.net/#2018/09/0 ... 49,-30.936
Atmospheric river now running at around 40mm from the tropics on the occluded frontal boundary. Total Totals near 55 on most models early tomorrow morning around Upper NI, looking quite volatile for downpours and storms in the early hours of Sunday IMO.
Sub tropical and polar Jets are now interacting in the Tasman. https://earth.nullschool.net/#2018/09/0 ... 49,-30.936
Atmospheric river now running at around 40mm from the tropics on the occluded frontal boundary. Total Totals near 55 on most models early tomorrow morning around Upper NI, looking quite volatile for downpours and storms in the early hours of Sunday IMO.
Re: General September Weather
Posted: Sun 02/09/2018 07:46
Isol Ts moving into the west of the North Island this morning south of Auckland.
Tomorrow, a nice cold pool moving across North Island, a good setup for hail.
500mb temp midday Monday.
Tomorrow, a nice cold pool moving across North Island, a good setup for hail.
500mb temp midday Monday.
Re: General September Weather
Posted: Sun 02/09/2018 08:54
Some afternoon heating in the mix tomorrow as well ( upper North Island), keep a watch on tomorrow afternoon for hail/isolated thunder.
Re: General September Weather
Posted: Sun 02/09/2018 11:53
Just a rainfall rate of 54mm/h in that brief downpour. 10mm for the day so far.
Re: General September Weather
Posted: Sun 02/09/2018 12:08
Had a torrential downpour here. Rain rate peaked at 2.25mm/min. I was out in it and we had a flash flood here. Gave us about 10mm in 10 mins. Now up to 22 since midnight with another heavy burst of rain coming through now.
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Sent from my iPhone using Tapatalk
Re: General September Weather
Posted: Sun 02/09/2018 18:33
Nothing like that down here. Just a light shower or two, whilst chopping firewood in antipating the southerly blast overnight/tomorrow.
Re: General September Weather
Posted: Sun 02/09/2018 18:54
Report of a possible tornado in Matamata around midday today…
https://www.sunlive.co.nz/news/187817-a ... amata.html
https://www.sunlive.co.nz/news/187817-a ... amata.html
Re: General September Weather
Posted: Mon 03/09/2018 13:05
Hail in Grey Lynn currently.
Re: General September Weather
Posted: Mon 03/09/2018 13:31
Thunder clap to west of here.
Re: General September Weather
Posted: Mon 03/09/2018 13:50
Re: General September Weather
Posted: Mon 03/09/2018 14:01
That cell has turned into a full on thunderstorm now that its east of me. Quite frequent lightning and thunder.
Re: General September Weather
Posted: Mon 03/09/2018 15:40
Heard quite a few distant rumbles but missed out on most of the action here. A hit and miss 2mm so far.
Re: General September Weather
Posted: Mon 03/09/2018 15:54
NZ Thunderstorm Soc wrote: ↑Sun 02/09/2018 18:33 whilst chopping firewood in antipating the southerly blast overnight/tomorrow.
......which was a blimmin well waste of time as it is fine and sunny down here and quite warm in the sun
Re: General September Weather
Posted: Mon 03/09/2018 17:15
A beautiful sunny late afternoon here. Few big cumulus around, here's a photo looking towards the south just before 5pm.
Re: General September Weather
Posted: Mon 03/09/2018 17:28
Yeah, that first thunderclap around 1:30pm was really loud here, didn't show up on Blitzortung though.
Also intense small hail showers around 11am and 2pm.Re: General September Weather
Posted: Mon 03/09/2018 17:53
Missed the hail/thunder here today.
Photo of the late day shower in the east.
Photo of the late day shower in the east.
Re: General September Weather
Posted: Tue 04/09/2018 07:43
Missed getting much rain yesterday but today the winds gone and the rain is coming and going, after a couple of below average rain months its gratefully received
Re: General September Weather
Posted: Tue 04/09/2018 07:52
Sudden shower of rain here just now, sounds cold 
Re: General September Weather
Posted: Tue 04/09/2018 16:56
Incredible to have the surface baro at 987hPa, a couple of days ago and now it is up to 1030hPa, and possibly intensify a little further, with little happening or nothing much of real significance, with the sudden rise .
Today it looks like 'anticyclonic gloom' with 0.4mm of rain in the gauge and still very overcast, especially in inland areas. I bet it's a lovely fine day on the Coast, Westland that is?
Today it looks like 'anticyclonic gloom' with 0.4mm of rain in the gauge and still very overcast, especially in inland areas. I bet it's a lovely fine day on the Coast, Westland that is?
Re: General September Weather
Posted: Tue 04/09/2018 20:15
Dry in Chch today after showers overnight. Radar showed shower activity in many other areas of Mid and North Canterbury, so must be the Banks Peninsula rainshadow effect in the southeasterly flow.