General November Weather

Razor · Unread post by **Razor** » Wed 11/11/2015 21:47

3mm here, now eased

trickytiger · Unread post by **trickytiger** » Wed 11/11/2015 22:05

4.2mm down here today so far, not looking like there will be much overnight or tomorrow...

03Stormchaser · Unread post by **03Stormchaser** » Wed 11/11/2015 22:43

About 5mm so far in Halswell. Nice to hear rain on the roof in bed!

Razor · Unread post by **Razor** » Wed 11/11/2015 22:48

Its back, and heavy. Pennies from heaven, hope its widespread

melja · Unread post by **melja** » Thu 12/11/2015 04:06

4mm for the event here.

Richard · Unread post by **Richard** » Thu 12/11/2015 06:16

Got 7mm here, Saturdays NWer and that will be all gone going

treetop · Unread post by **treetop** » Thu 12/11/2015 06:28

Best pm thunder setup for a while. Looks like the cloud will clear early[for a change] with some heating and convergence later.Western Waikato looks best. Had about 3 mm this morning.Will be gone by lunchtime.

03Stormchaser · Unread post by **03Stormchaser** » Thu 12/11/2015 06:34

Small hail failing now. Looks heavier toward the port hills

Razor · Unread post by **Razor** » Thu 12/11/2015 06:56

Just rain here in the Port Hills. 11mm for the night

03Stormchaser · Unread post by **03Stormchaser** » Thu 12/11/2015 06:58

Razor wrote:Just rain here in the Port Hills. 11mm for the night

11mm, that's almost double we got!

NZstorm · Unread post by **NZstorm** » Thu 12/11/2015 07:12

treetop wrote:Best pm thunder setup for a while. Looks like the cloud will clear early[for a change] with some heating and convergence later.Western Waikato looks best. Had about 3 mm this morning.Will be gone by lunchtime.

Yes, possible the best looking 500mb trough in a while. But the tropopause is low so convection low topped (5.5km). Looking like pm shower development from Waitomo to Auckland with small hail on the cards given chilly airmass. And the steepest lapse rates are south of Huntly and that's were a few rumbles thunder possible. Looking for a SW to converge with a SE change.

treetop · Unread post by **treetop** » Thu 12/11/2015 08:58

A couple of days last year [same time] had thunder /low topped convection. The second day one storm managed to break through and delivered some decent hail at Mt Maunganui/orchards damaged.Kaimais/Mamakus may provide enough lift .We want rain near the coast not in the hills though !.

TonyT · Unread post by **TonyT** » Thu 12/11/2015 09:42

Some small hail here in Amberley just now too.

shovelopikis · Unread post by **shovelopikis** » Thu 12/11/2015 09:44

Well very windy and cold here this morning, windchill was at 4, clouds starting to break up and begining to get the warmth between them, will be interesting to see what this afternoon brings!

NZstorm · Unread post by **NZstorm** » Thu 12/11/2015 10:32

treetop wrote:A couple of days last year [same time] had thunder /low topped convection. !.

Yes, in theory cb tops only need to reach -20C for lightning to be possible. The -20C hieght is under 5km today.

NZstorm · Unread post by **NZstorm** » Thu 12/11/2015 12:45

Sunny 20C with dp13C here with SW breeze. Good surface conditions in place for the incoming polar trough!

NZstorm · Unread post by **NZstorm** » Thu 12/11/2015 12:46

Sunny 20C with dp13C in Auckland and SW breeze. Good surface conditions in place for the incoming polar trough!

spwill · Unread post by **spwill** » Thu 12/11/2015 14:11

A convergence line is visible to the east.
Photo, clouds building near Waiheke Island seen from here.

jamie · Unread post by **jamie** » Thu 12/11/2015 14:41

Some interesting cloud bases around South Auckland like this one taken just now at Bombay looking towards Auckland. Lots of fast rising skud bases to the showers.

ImageUploadedByTapatalk1447292382.896727.jpg

It was awesome development at Otaua this morning at 11.30. Lots of rapid rising skud and big fat drops of rain.

David · Unread post by **David** » Thu 12/11/2015 15:16

Looking ominous east of Howick

Richard · Unread post by **Richard** » Thu 12/11/2015 16:43

Some nice photos you guys, been some beefy clouds about here today too with the odd small hail shower thrown in, the worry now is frost tonight.

spwill · Unread post by **spwill** » Thu 12/11/2015 16:45

Just observed a flash of lightning and some hail with a Cb near Mercer, North Waikato.

David · Unread post by **David** » Thu 12/11/2015 17:17

It's gone calm in Howick, must be on the edge of the convergence zone... though all the action still remains east of here.

Nev · Unread post by **Nev** » Thu 12/11/2015 17:32

Very active out this way since about mid-arvo. Had one very near loud clap at 3:59pm, and still getting plenty of distant rumbles out east… 4.5mm so far, although it seems to have eased now.

Orion · Unread post by **Orion** » Thu 12/11/2015 18:14

Severe Thunderstorm Watch for Rural South Auckland:

http://cdem.co/viewer.jsp?token=pVGX2S5s

"MetService have advised that localised heavy downpours are possible in rural parts of South Auckland over the next two hours.
Thunderstorms have developed this afternoon about the southeast of Aucklandand are slow moving and producing heavy rain with hourly intensities of 10 to 25mm/hr and hail 10-20mm in diameter.
Additionally, because of the slow moving nature of the storms there is a potential for localised downpours with intensities of 25 to 35mm/hr in these areas and also across the Firth of Thames to western areas of the Coromandel Peninsula from late this afternoon and into the evening.
Rainfall of this intensity can cause flash flooding, especially about low-lying areas such as streams, rivers or narrow valleys, and may also lead to slips. Driving conditions will also be hazardous with surface flooding and poor visibility in heavy rain..."

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