Heavy rain/tornado/snow/wind event. 18-21 November

[talbotmj15]

Sunday through to Wednesday appears to be a nasty period especially for East Coast South Island and with low and heavy snow possible.

[NZstorm]

Eastern Otago and Canterbury plains look favoured for thunder/hail/squall with the trough line moving north tomorrow afternoon.

Hopefully we can get a storm set up over the North Island next week with the cold upper air.

[mikestormchaser]

Looks onshore winds along the coast tomorrow to. Wonder if that will put the low risk to atleast moderate for mid and north Canterbury? Severe hail chance maybe?

[Bradley]

Huge downgrade in the latest few EC runs, moisture halved for Canterbury and snow level snow 600-700m

[NZstorm]

GFS rainfall total through to midnight Tuesday.

Dunedin area in particular could see some flooding.

Snow possible to 500m but a warming trend during Tuesday.

[Andy]

Predictions for Central Otago ???

[Storm Struck]

Looking good from my veiw point for christchurch southwards this afternoon/evening for thunderstorms and hail possibly up to 20mm diamter.
Wind is now SE but i can see a convergence of TCU over north chch with an incoming easterly.
TCU inland and to the south currently, also 18C and rising.
Well worth a chase this afternoon,best spots look to be Ashburton to Rakaia given instability numbers.
Will likely be a classic roll cloud set up.

[03Stormchaser]

Few storms firing along the coast from Dunedin to Oamaru atm

[mikestormchaser]

Onshore winds this afternoon. Clouds going up over the city. Looking good! No sign of any NW for a change. Sun is beaming!!

[Richard]

Quite windy from the NW here but looking rather unstable down your way Mike

[Orion]

I believe I'm hearing thunder

[Chris W]

Very unstable around the peninsula early this afternoon, and signs elsewhere also. Not surprised at the severe TS heading for Waimate right now.

[mikestormchaser]

Nice breezy NE here even see sea low cloud towards the NE.
Massive CU going up around rolleston, thunderstorms in ashburton now. Will head out soon

[Chris W]

I see mid level cloud heading east, and low level cloud heading west. Bit of shear perhaps!

[Orion]

Cloud going in various directions here, and thunder racketing around nearly continuously.

[Razor]

SEVERE THUNDERSTORM WARNING
TOP PRIORITY FOR IMMEDIATE BROADCAST

Issued by MetService at 03:34 pm Sunday 18 November 2018.
Valid until 04:22 pm Sunday 18 November 2018.

This warning affects people in the following local government areas:
ASHBURTON.

At 03:22 pm, MetService weather radar detected severe thunderstorms near ASHBURTON, WINCHMORE, HINDS, TINWALD and WESTERFIELD.

These severe thunderstorms are moving towards the east, and are expected to lie near ASHBURTON, WINCHMORE, THE ASHBURTON RIVER MOUTH, TINWALD and DROMORE at 03:52 pm and near ASHBURTON, RAKAIA, CHERTSEY, THE ASHBURTON RIVER MOUTH, SEAFIELD, PENDARVES and DROMORE at 04:22 pm.

[Orion]

Hailstones falling here now, some marble-sized; followed by rain.
Very very black cloud to the east.

[Classicford]

Twister reported in ashburton area!

[Razor]

Twister reported in ashburton area!

Amazing footage on social media sorry having trouble posting link from phone

[TonyT]

Twister reported in ashburton area!

Amazing footage on social media sorry having trouble posting link from phone

https://www.facebook.com/lynchinnz/vide ... 476402536/

https://www.facebook.com/amykmaw/videos ... 958446152/

[Razor]

It's all collapsed and gone out to sea/ banks Peninsula here

[TonyT]

Looked like a nice hook echo in the 4pm radar scan above that Ashburton tornado.

[TonyT]

It's all collapsed and gone out to sea/ banks Peninsula here

"Out to sea" certainly copping it on the 4.45pm scan.

[Tornado Tim]

https://www.facebook.com/lynchinnz/vide ... 476402536/

What a Beauty of a tornado!

[spwill]

Nice clip there