Impending Westerly Flow

NZ Thunderstorm Soc · Wed 26/05/2004 21:15

Looks like an interesting impending westerly flow developing over NZ for the first week into the first week of winter.
What are one's thought's (as I thought I would start up a new thread??)

JohnGaul
NZTS

NZstorm · Unread post by **NZstorm** » Wed 26/05/2004 21:30

Looks like a humdinger of a westerly coming.

The front currently in the Tasman Sea looks like its starting to chock a bit on dry air which makes me think it may not live up to expectations.

NZ Thunderstorm Soc · Wed 26/05/2004 21:45

Yes, Steven, I think this may become the most interesting weather event for NZ since the February Floods. Wind may be the factor this time

Lets see what happens?

JohnGaul
NZTS

C-Nimbus · Unread post by **C-Nimbus** » Thu 27/05/2004 08:26

Most definately,

The attached image shows a ton of cold air coming thru, and also another little depression just of Tasmania.

Keep those fires a' burnin!

Michael · Unread post by **Michael** » Thu 27/05/2004 11:10

The lucky folks that live East gets the better weather We get all the crap as always

NZ Thunderstorm Soc wrote:Looks like an interesting impending westerly flow developing over NZ for the first week into the first week of winter.
What are one's thought's (as I thought I would start up a new thread??)

JohnGaul
NZTS

NZstorm · Unread post by **NZstorm** » Thu 27/05/2004 19:06

C-nimbus, the colours on the chart show an upper short wave trough over the western Tasman Sea. These can be favourable for thunderstorm development, more particularly in the summer months. But as the satellite imagery shows, lots of cb's in this area today(in behind front).

Chance of a heavy squally thunderstorm overnight friday/saturday right down the west of the country as this area of unstable air crosses NZ.

NZstorm · Unread post by **NZstorm** » Thu 27/05/2004 19:25

Models for Sunday have 980hpa over Invercargill, 1015hpa over Northland.

Andy · Unread post by **Andy** » Thu 27/05/2004 20:44

Itis going to get windy down south.

Gary Roberts · Unread post by **Gary Roberts** » Thu 27/05/2004 21:04

Michael wrote: The lucky folks that live East gets the better weather We get all the crap as always

If it makes you feel any better Michael, those of us at present in the FAR East are sweating through the real hot-n-humid weather. Meanwhile, back home, it continues to snow...

C-Nimbus · Unread post by **C-Nimbus** » Fri 28/05/2004 10:13

Go Northland!!!

Ya lucky buggars

NZstorm · Unread post by **NZstorm** » Fri 28/05/2004 19:37

Todays front was abit of a non event apart from an unexpected strong wind event around 2pm. Story here

http://xtramsn.co.nz/news/0,,3882-3386168,00.html

I was in Papakura at the time and the gusts would have been around 45kts. (my estimate)

Andy · Unread post by **Andy** » Fri 28/05/2004 19:51

boring here no wind or rain

Just plenty of high cloud and a cool max of 8 degrees

spwill · Unread post by **spwill** » Fri 28/05/2004 20:39

In Wanaka. Overcaste and murky here today with some light rain at times.

Looking forward to a little sun tomorrow and a good view of the Mountains .

NZstorm · Unread post by **NZstorm** » Fri 28/05/2004 20:47

Thanks for the report from Wanaka. Should be some cb in the ranges there tomorrow.

Rain has stopped in Auckland. 17mm recorded.

Slight chance of a thunderstorm overnight as that unstable line passes through. Will get heavy showers anyway, i think. Could be a resonable day tomorrow before another front at night.

tich · Unread post by **tich** » Fri 28/05/2004 22:02

Some outbreaks of rain (nothing significant) from about midafternoon here in Chch (raining again as I write), but looks like it should be fine by dawn.

Todays front was abit of a non event apart from an unexpected strong wind event around 2pm.

TV1 News showed footage of the nasty gales in Auckland today

.

Willoughby · Unread post by **Willoughby** » Fri 28/05/2004 23:25

Windiest day this year for Hamilton, no doubt
Wet, stupid day, yuck.

NZstorm · Unread post by **NZstorm** » Sat 29/05/2004 09:30

A fine morning in AK with 15C and a freash westerly.
Some fairly active looking shower cloud in the central Tasman Sea fast approaching NZ.

Must be cold in the western Tasman as subtropical Brisbane has a daybreak temperature of just 6C this morning.

GraemeWi · Unread post by **GraemeWi** » Sat 29/05/2004 10:21

Always gets cold in Brisbane during the winter mornings especially if the wind is from the SW. We hassle the relations there as they always have a fire before we do!

Yesterday was pretty crook in the central city - the windows leaked in our offices which is the first time in 4 years I've seen it do that. Also had a couple of power cuts during the day at home with trees down on the lines etc.

Cheers,

G

NZstorm · Unread post by **NZstorm** » Sat 29/05/2004 20:17

Thats a huge pool of unstable air out there

Willoughby · Unread post by **Willoughby** » Sat 29/05/2004 23:02

Oh yes.

If it came from the south a bit more, widespread hail!!!

GraemeWi · Unread post by **GraemeWi** » Sun 30/05/2004 08:01

Quite an active thunderstorm came through here at 5am, from the looks of the radar it was part of a large squall line. 10mm overnight.

Just looking at the large version of the radar image - offshore to the east is a cell with blue 50-60 dBz. Given the distance involved it could have been very impressive. Hopefully no tuna boats under it!

http://www.metvuw.com/radar/jimsradar/2 ... 00Z_ak.gif

NZstorm · Unread post by **NZstorm** » Sun 30/05/2004 08:47

Latest satellite pic shows how the convective cloud has expanded overnight. But alot of it is spent anvil cloud. Currently overcast altostratus over Auckland.

We missed the early morning thunderstorm here in Auckland (heard just one rumble, 4mm). Perhaps the upper NW flow had something to do with that. We can be rain shadow here in central AK in showery NW'esters.

Lifted index -1 on 1200Z sounding.

NZstorm · Unread post by **NZstorm** » Sun 30/05/2004 10:00

Thunder here now( ts out to the west)

My thoughts on todays weather is that if the temperatures lift a bit, currently 12C, but 15-16C, will yield a much higher level of convective energy with decent cb's possible.

spwill · Unread post by **spwill** » Sun 30/05/2004 17:54

In Queenstown. Light rain cleared today, now fine. A little new snow on the very high Mountain tops but Coronet Peak looks only good for grass skiing. Should be good snow fall here later this week to low levels .

Andy · Unread post by **Andy** » Sun 30/05/2004 18:27

Warm day with some cloud in the morning and some sun later in the afternoon.

Looking mild and windy for most of the week. Late friday to sunday may see some colder air hitting the south.

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Impending Westerly Flow

Impending Westerly Flow

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