Cold Snap 18-22 September 2015

jamie · Unread post by **jamie** » Sun 20/09/2015 13:40

It looks like a big black nasty thing from here.

Is it worth a drive?

cbm · Unread post by **cbm** » Sun 20/09/2015 13:51

20c. So hail must have been pushing 15mm diameter. Large compared to anything I've seen in person before. Continuous thunder here atm.

Manukau heads obs · Sun 20/09/2015 13:52

thats some decent looking hail size!
we did get some brief hail here

Richard · Unread post by **Richard** » Sun 20/09/2015 13:56

Its an impressive looking line alright.

Still had no rain here, even patches of blue sky, maybe tomorrow

cbm · Unread post by **cbm** » Sun 20/09/2015 14:01

Fudge. That one was close. 2-3 seconds only flash to bang. I wonder if the storms are getting a lift going over the Te Miro/Maungakawa hills before hitting Cambridge town.

Richard · Unread post by **Richard** » Sun 20/09/2015 14:14

cbm wrote:Fudge. That one was close. 2-3 seconds only flash to bang. I wonder if the storms are getting a lift going over the Te Miro/Maungakawa hills before hitting Cambridge town.

Is it much a photogenic system?, would love some photos if possible

NZstorm · Unread post by **NZstorm** » Sun 20/09/2015 14:15

cbm wrote: I wonder if the storms are getting a lift going over the Te Miro/Maungakawa hills before hitting Cambridge town.

GFS surface wind shows the winds converging in on southern Waikato.

Thanks for the hail report cbm.

Tornado Tim · Unread post by **Tornado Tim** » Sun 20/09/2015 14:28

Not terribly photogenic, but some Mammatus assoc with the CB's. They arnt organised at all, they develop and then weaken as they drift along.

Lightning activity has ceased for the moment.... The SFC Temp is quite cold.....

Needs a little more organisation for me to get excited.....

treetop · Unread post by **treetop** » Sun 20/09/2015 14:35

clearing from Tauranga no hail seen there just mod to heavy rain. Whole thing looking weaker now , Whakatane/Opotiki in the firing line next if it intensifies again.

jamie · Unread post by **jamie** » Sun 20/09/2015 15:11

Yea nothing to look at from here except the awesome mama right now. Just a big black wall from here.

jamie · Unread post by **jamie** » Sun 20/09/2015 15:16

ImageUploadedByTapatalk1442718967.282565.jpg

Looking south

spwill · Unread post by **spwill** » Sun 20/09/2015 17:02

Thunderstorm here at Ramarama, South Auckland, hail storm currently.

Manukau heads obs · Sun 20/09/2015 17:19

my brother in Ramarama reports hail building up on the ground... and shed roofs....he just phoned up

spwill · Unread post by **spwill** » Sun 20/09/2015 17:35

Yes, it was a good hail storm, has eased to heavy rain now.

Tornado Tim · Unread post by **Tornado Tim** » Sun 20/09/2015 18:17

A wonderful and varied sky to the south this afternoon with the line of Thundershowers, with the activity remaining fairly stationary.
The temp and wind make it feel like the wind has come off the Antarctic ice shelf, Hands cold just from taking pictures.....
Temps between 9 and 12.

Wednesday Arvo this week seems like a good day for some more storms with a trough coming into play

Richard · Unread post by **Richard** » Sun 20/09/2015 18:20

Neat photos Tim

Manukau heads obs · Sun 20/09/2015 18:21

that sure is a slow moving rain band
thats gonna cause issues

NZstorm · Unread post by **NZstorm** » Sun 20/09/2015 18:32

Manukau heads obs wrote:that sure is a slow moving rain band
thats gonna cause issues

Te Awamutu (EW) over 80mm today.

GraemeWi · Unread post by **GraemeWi** » Sun 20/09/2015 18:40

Lots of hail falling here in Swanson & Ranui (West Auckland)

spwill · Unread post by **spwill** » Sun 20/09/2015 18:53

Photo of the Hail at Ramarama.

spwill · Unread post by **spwill** » Sun 20/09/2015 19:11

A couple more photos from my trip south this afternoon, plenty of hail showers this afternoon but observed just one thunderstorm at Ramarama

Orion · Unread post by **Orion** » Sun 20/09/2015 20:17

Spectacular photos!

NZstorm · Unread post by **NZstorm** » Sun 20/09/2015 20:27

Well done spwill on getting out there for chase.

Tornado Tim · Unread post by **Tornado Tim** » Sun 20/09/2015 20:30

The Rain is going to return in the next 30 min or so, the Line is coming up north again......

Metservice need to think about issuing a flood watch for further west along the line (they already have one for the BOP), wouldnt be surprised if its gone beyond 100mm

brikrip · Unread post by **brikrip** » Sun 20/09/2015 20:31

Hail Storm Around 11am this morning 5min north of Te awamutu township
https://www.youtube.com/watch?v=-EUkh50DnB8

https://www.youtube.com/watch?v=uCDN6FYB9ng

NZ Weather Forum