Wet and wintry week likely

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tich
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Wet and wintry week likely

Unread post by tich »

Looks like some interesting weather coming this week. Tomorrow could see snow showers to about 600 metres in the far south, but Chch is expected to be mainly fine, though in a 'critical' southwesterly flow. A depression could bring some heavy to to the north and east of the North Island about Wednesday, and behind this low, a cold southerly should spread over NZ. The latest ECMWF has the flow coming right up from near Antarctica - pretty wintry for late November.

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Unread post by Manukau heads obs »

we have just had the same Cold Front go through for the 2nd time in 12 hours!
its ground hog day!
an exact repeat of the same windspeed/ then cahnge to a SWer and temperature drop as 12 hours ago!
(i.e the front moved back onto us overnight, then back over us again this morning, bringing us welcome 24mm of rain overnight)
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Unread post by Andy »

Very windy south westerly here in Alexandra , but mostly sunny.

Not that warm as well.. Temp 14 degrees.

Must be not very nice down on the south coast today.. :(
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Unread post by Chris Raine »

Quite cool in Invercargill this morning . Was 7 degrees at 0830 with a 20 kt SW. Been having showers of small hail this morning. Brrrr! Yesterday prior to the front beautiful day but it blew westerly 30 kts + most of the afternoon.
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Unread post by NZstorm »

The freezing level down in Invercargill today was around the 800m, so no wonder it was feeling chilly. And the hail would have been coming out of very low topped cb's. Sounding is very stable above 2300m.

Cool in Auckland this evening with a post frontal southwester coming in this afternoon. But the low in the tasman will push the milder humid air back onto us tomorrow.

I expect a few thunderstorms with decent hail over central/eastern North Island Thursday or friday.
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Unread post by tich »

Cloudy and cold (about 11C) for most of the day on Banks Peninsula; some light rain from about midmorning to early afternoon.
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Unread post by NZ Thunderstorm Soc »

tich wrote:Cloudy and cold (about 11C) for most of the day on Banks Peninsula; some light rain from about midmorning to early afternoon.
Cloudy coolish day here in ChCh although the sun must off popped out when I was at work as my max thermometer got up to 17C in the screen.
It was mainly around the 13/14C mark this afternoon with a cool southerly breeze.
Supposed to clear tomorrow but I think an ENE breeze will keep it cool like it did yesterday.
ECMWF looks good for the rest of the week with this SW flow continuing.
Depending on timing/heat from the sun/'rodents' if anything will happen !!

I expect a few thunderstorms with decent hail over central/eastern North Island Thursday or friday.
Yes that does look likely , at the moment, Steven


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Unread post by NZstorm »

Looks like Thursday still offers the best prospects for some interesting weather with Thunderstorms/hail possible over central parts of the North Island. Hopefully skies don't end up too cloudy and thermal heating prevented. If conditions still look favourable Thursday morning I'll hit the road.

Persistent drizzly rain in AK this evening.
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Unread post by Michael »

Well Australia's sending us their Rugby ball(the low in the tasman looks like a rugby ball) ;) Theyre getting the try and converting it on us :)
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Unread post by tich »

Well Australia's sending us their Rugby ball(the low in the tasman looks like a rugby ball) Theyre getting the try and converting it on us
And not much defence from the weak ridge of high pressure over central NZ at present. But I think there'll be more red and orange, than green and gold on North Island rain radar screens tomorrow (though green down here in Canty, with the drizzle predicted). Then the cold southerly looks like following on Thursday - if the cold southerly air hits the low before it moves off to the east, things could get interesting, especially in the east of the North Island.
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Unread post by Manukau heads obs »

steady rain here this eveneing, briefly heavy at times
12mm so far
:)
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Unread post by Michael »

The front must of moved south the warm sector is in Auckland now with Northerlies and humid and quite sunny now about 21c
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Unread post by Manukau heads obs »

we got lots of rain from it overnight, this morning..
around 40mm or so..
the 3rd time the same front passed over us!
very heavy for a time this morning at 8am
i see the city missed most of that rain
23oC here got to this afternnon, dew point 18oC
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Afternoon Convection Auckland

Unread post by spwill »

The Front cleared Auckland late morning and left very warm and muggy Weather in its wake. This has lead to Convection showers around Auckland this afternoon and now at 3pm there are some very nice looking Cb clouds around.,may be a Storm on the way.
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Unread post by Michael »

Lightning as I write and heavy sperics on AM interfering even with local radio and thunder too
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Unread post by spwill »

At 4-10 pm we have a very nice Thunderstorm over Mt Eden at the moement. Lots of Thunder and Lightning.
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Unread post by Manukau heads obs »

http://www.portunus.net.nz/weather/Prime.htm
and
http://www.destin.co.nz/weather/standard.htm
both recorded lightning counts :)
the grey lyn station, he reports one was right overhead

we missed it here
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Unread post by NZstorm »

After the clearance of morning rain, localised thunderstorms started developing over North Auckland about 1pm. See picture below.
Quite an active storm developed right over the Auckland Isthmus from about 3.00pm. I observed the activity from my work at the Eastern Suburbs and saw quite a bit of lightning. The static on the am band was every 2-3 seconds from this storm. It drifted southward clearing Ak by 5pm. :)

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Unread post by NZstorm »

Building cb 3.30pm over Auckland

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Unread post by NZstorm »

cb with very occasional lightning out to east of Auckland this evening.
Storm is over the Hunua region. 8.45pm.

Extent of thundery activity tomorrow will depend on timing of SW change and amount of surface heating. But looks very favourable for more storms tomorrow over Auckland/Waikato.
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Unread post by Manukau heads obs »

nice photos

still NW here
barometer stopped dropping now.

I dont think there will be much happening tomorrow here as the Swer will have arrived which a much lower DP, but maybe south waikato will be a a different story
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Unread post by NZstorm »

Yesterday afternoon's thunderstorms dumped 55mm in one hour at Hamilton between 5pm and 6pm. And the city recieved 111mm in the 24hrs to 6pm.

Auckland recorded 32mm to 6pm. I'm sure parts of Auckland would have recorded more than this.
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Unread post by Michael »

The "gales" have just arrived with rain
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Unread post by Manukau heads obs »

http://www.tokaanuskihire.co.nz/johngor ... oncity.htm

and scroll down to see the links to the 24/48/72 hour graphs
to see this rain :)

(this station is in west hamilton, northern end)
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tich
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Unread post by tich »

The "gales" have just arrived with rain
The rain (light rain) has arrived in Chch this morning, but no gales, just a moderate southerly.
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