Very cold and unstable SW blast, Eastern SI 25th Sept

[snowchaser01]

I'm doubtful... I know I harp on but critical SW flow and all that.. out to sea I'm thinking

Agree, if its SW it can sometimes create a decent chain shower set up however.... WSW it goes out to sea. That's how i understand it anyway. I guess if the flow is straighter than or equal to the angle the SI is, then some showers will occur. Seems to be a few incoming atm.

[TonyT]

Had about a 30-40 min period of snow here, slushy accumulation on the ground which was well wet from earlier rain. Seems to have stopped now.

[Cyclone Tracy]

IMO, small window for snow in Christchurch approaching from cold convection before the flow goes more SW. Currently temps around 2c with a 1c DP from what I can see.

[mikestormchaser]

You can see the flow going SW from about 3am on the merservice maps. Snowchaser WSW is no show for Canterbury. A SSW is what we want. I think thats what it is currently?

[snowchaser01]

You can see the flow going SW from about 3am on the merservice maps. Snowchaser WSW is no show for Canterbury. A SSW is what we want. I think thats what it is currently?

Yes agree, WSW is all out to sea like i said. Currently inbetween lol... touch and go IMO

[mikestormchaser]

Tomorrow looking at the BSCH gfs, looking dry. Light NW flow at the surface. variable with a WSW in afternoon. 13-14C so a cool day

[tich]

IMO, small window for snow in Christchurch approaching from cold convection before the flow goes more SW. Currently temps around 2c with a 1c DP from what I can see.

Second band of blue (on radar) moving onto Chch now. Not as big, but air has chilled down enough for at least sleet in the city.

[NZ Thunderstorm Soc]

Nice mammatus as the cloud moved NE over Geraldine about lunchtime and then moved over to the NE developing possibly further as it worked it's way north to produce a more colder cutting underneath with it resulting in the hail that Tony got plus a few strikes of lightning possibly around the Rakaia Gorge area?

[Orion]

+0.3°C, ground and roofs dappled with frozen snow. Very picturesque.
Sky mostly clear, a few low clouds to south-east and north-west.

[Richard]

Noticed a few flakes frozen on the car

[Awhituobs]

reports of snow right down on the hills around Lake Taupo this morning (i.e 500m altitude)

[RWood]

As usual in these setups, a nonevent here - a brief squall around 10pm with a small amount of hail, 0.8mm at Kelburn. Clear this morning.

[Chris W]

Similar in Kaikõura, mainly some gale strength gusts and some brief heavy rain as the rain component of the cold front came through late at night. Back to a beautiful day today.