Heavy Rain, Strong Wind and Cold Outbreak July 5th-8th

[jamie]

91km gust and hail on the arrival of the westerly this morning. Not a pleasant day or week for that matter.


Sent from my iPhone using Tapatalk

[mikestormchaser]

Mid level moisture being picked up on the 12pm water vapour image within the 524 thickness bubble heading NNE towards the Banks peninsular. This cold pool will be energised by 10 to 11c sea surface temperatures this evening producing cold convection and super cooling in that region.

Yes some coldie CBs later. Heavy showers/ hail definately for chch city. Snow for tops of hills. 500mb temp -32 as of 6pm tonight

[Awhituobs]

brief hail in the showers here

[Cyclone Tracy]

big batch of pea sized hail in that cell that just passed.

[tornado]

hail at times here. there are no gales as forecast. may be some thunder later?

[spwill]

The higher hills around Dunedin getting some snow flurries currently.

Hail in the showers here

[tornado]

thunderstorms northland currently.

[Cyclone Tracy]

Some more beefy coldies bubbling in the Tasman to the SW of Auckland, it should be an interesting evening of icy precip. Northland will cope a decent south westerly blast later tonight with 50 to 55 knot winds at 850 hPa coming off the Tasman.

[mikestormchaser]

Quite nice virga around now, esp south of the city/ my home town rolleston.

[NZ Thunderstorm Soc]

Yes, Mike. Lots of wintry stuff moving north out to sea when we went to Temuka this afternoon.

[ben g]

Polar injected upper trough.

Is there a public link for these images? Love your contribution on this group. I think we live in the same area and likely cross paths at Narrow Neck while admiring a NE gale

[tornado]

Some more beefy coldies bubbling in the Tasman to the SW of Auckland, it should be an interesting evening of icy precip. Northland will cope a decent south westerly blast later tonight with 50 to 55 knot winds at 850 hPa coming off the Tasman.

yes more CBs coming in. more hail. had lots of hail today, perhaps a isolated thunder clap/flash of lightning. was quite unstable today.

[Chris W]

Feels chilly in Parklands, some cold rain on the drive down from Amberley mainly around Woodend but not much of it.

[Razor]

There was a light sleet shower at Victoria Park at 5pm. Hardly wet the ground tho

[tornado]

apparently there was a clap of thunder somewhere in west auckland.


and according to philip duncan this is a similar set up to april 2018. totaly differant i reakon. where was the severe gales? just saw reports it was mainly north that got damage.


oh i did see a flash of lightning and heard a distant rumble of thunder around 5:30pm. so yay.

did anyone get any coldie CB photos. i didnt unfortunatly. my phone doesnt take good pictures. doh

[Cyclone Tracy]

Polar injected upper trough.

Is there a public link for these images? Love your contribution on this group. I think we live in the same area and likely cross paths at Narrow Neck while admiring a NE gale

Sorry but images are behind a paywall. Yes, I'm always looking out for the north easterly convergence from just down the road in Devonport

[NZstorm]

Rain and hail mix here atm, temperature 7C.

[Cyclone Tracy]

and according to philip duncan this is a similar set up to april 2018. totaly differant i reakon. where was the severe gales?

Yep, synoptic set up of 10 April, 2018 was totally different to this set up tonight. That April storm was running 60 to 70 knots at 850 hPa off a cold core Tasman cyclone.

viewtopic.php?p=174362#p174362

[tornado]

6c here. another hail shower through. went to otuhuhu earlier with blue sky but CB all around.

[Awhituobs]

looks like the worse is over now
wind slowly easing here now
showers trains have moved north of us now
70mm month to date

[tornado]

wind only got to 62km here. 82mm for the month. some stable weather coming in then a northern low next week?

[snow101]

Becoming very cold around Banks Peninsula area. Down to 0.4 at Sugarloaf, only 4 degrees in Akaroa and 3.3 at Le Bons Bay. Christchurch flurries can not be ruled out.

[Awhituobs]

you would need some good instability to penetrate the marine layer though
ie some beefy showers should do that

[snow101]

Christchurch temp keeps dropping. Down to 3.3 with sleety showers, and flakes mixed.

[Cyclone Tracy]

There is also mid level moisture expanding and moving directly north around 200km south of Christchurch at the moment. This will add some extra oomph into mix for the cold convection below in the SSW flow.