Tasman low and cold air collision September 7-9

Chris W · Unread post by **Chris W** » Wed 04/09/2019 12:18

Alluded to in the stratospheric warming thread, GFS, UKMO and EC are both modelling a very cold airmass to arrive on Friday followed by a Tasman low bumping into it. EC and UK are further north than GFS at this stage.

Chris W · Unread post by **Chris W** » Wed 04/09/2019 18:19

MetService now mentioning possible low-level snow for Canterbury and Marlborough in their Outlook, but plenty of uncertainty around this one as usual. Looks wet for the North Island.

Edit - a ridge of high pressure is keeping the southerly and Tasman low apart, so not much to write home about.

Cyclone Tracy · Unread post by **Cyclone Tracy** » Sat 07/09/2019 17:54

Time to re-activate the thread

It's certainly fizzing out in the Tasman between the warm and cold fronts. Rain totals may also add up over a couple over days on the NI from tomorrow morning.

tornado · Unread post by **tornado** » Sat 07/09/2019 17:57

Cyclone Tracy wrote: ↑Sat 07/09/2019 17:54 Time to re-activate the thread It's certainly fizzing out in the Tasman between the warm and cold fronts. Rain totals may also add up over a couple over days on the NI from tomorrow morning.

yes looks like may be in for a thundery night/morning coming up

tich · Unread post by **tich** » Sat 07/09/2019 19:22

Interaction between warm and cold air over the North Island on Monday could be interesting.

David · Unread post by **David** » Sat 07/09/2019 22:12

Typical media... Metservice issues a severe thunderstorm watch (not a warning), and now NZ Herald is reporting a severe thunderstorm warning has been issued instead

Edit: they fixed it pretty quickly thankfully

tornado · Unread post by **tornado** » Sat 07/09/2019 22:19

The cells are getting closer. can see them on rader

tornado · Unread post by **tornado** » Sun 08/09/2019 00:15

things are looking intresting by the radar that developing band of rain is heading this way and is lightning potiential too. : )

Chris Raine · Unread post by **Chris Raine** » Sun 08/09/2019 00:24

Tornado have you got this site loaded on your computer?.I use it daily.
http://en.blitzortung.org/live_lightnin ... php?map=20
and yes lots of lightning associated with the incoming trough

tornado · Unread post by **tornado** » Sun 08/09/2019 00:29

Chris Raine wrote: ↑Sun 08/09/2019 00:24 Tornado have you got this site loaded on your computer?.I use it daily.
http://en.blitzortung.org/live_lightnin ... php?map=20
and yes lots of lightning associated with the incoming trough

yes. i do. the strikes are getting closer. things could be intresting for northland and auckland this morning.im using blitz right now.

Ash · Unread post by **Ash** » Sun 08/09/2019 00:42

Looks like Hamilton to Northland are going to get a good whack. Impressive on the radar.

tornado · Unread post by **tornado** » Sun 08/09/2019 00:45

Ash wrote: ↑Sun 08/09/2019 00:42 Looks like Hamilton to Northland are going to get a good whack. Impressive on the radar.

and auckland too.

Ash · Unread post by **Ash** » Sun 08/09/2019 00:47

Hamilton to Northland and everything inbetween.

tornado · Unread post by **tornado** » Sun 08/09/2019 00:50

Ash wrote: ↑Sun 08/09/2019 00:47 Hamilton to Northland and everything inbetween.

yeah. i reackon this may be the best storm this year. metservice has put out a servere thunderstorm watch. im keeping an eye on it

Chris Raine · Unread post by **Chris Raine** » Sun 08/09/2019 00:52

Going to bed or staying up for a while for your incoming front ?. Others are tracking Hurricane Dorian(me) so a late night tonight

tornado · Unread post by **tornado** » Sun 08/09/2019 00:56

Chris Raine wrote: ↑Sun 08/09/2019 00:52 Going to bed or staying up for a while for your incoming front ?. Others are tracking Hurricane Dorian(me) so a late night tonight

staying up. it looks so extreme this thundery front.

Willoughby · Unread post by **Willoughby** » Sun 08/09/2019 01:04

Hope it makes it for you guys. Many many days living with hope in Hamilton and watching those lightning filled fronts come off NSW only to die two thirds to NZ over the Tasman.

tornado · Unread post by **tornado** » Sun 08/09/2019 01:13

Willoughby wrote: ↑Sun 08/09/2019 01:04 Hope it makes it for you guys. Many many days living with hope in Hamilton and watching those lightning filled fronts come off NSW only to die two thirds to NZ over the Tasman.

yeah they always tend to die off. hopefully not this one it looks intense. coming in real close. lightning in the tasman sea has been active for the past 24 hours or so

tornado · Unread post by **tornado** » Sun 08/09/2019 01:48

ps sorry for the other two blank spaces. i tried to add the lightning pic in but it didnt let me.

tornado · Unread post by **tornado** » Sun 08/09/2019 02:59

raining now and i just heard a rumble of thunder.

tornado · Unread post by **tornado** » Sun 08/09/2019 03:04

bright flash just now

Chris Raine · Unread post by **Chris Raine** » Sun 08/09/2019 03:10

Yep Blizortung shows widespread thunderstorm activity over Auckland right now

tornado · Unread post by **tornado** » Sun 08/09/2019 03:14

Chris Raine wrote: ↑Sun 08/09/2019 03:10 Yep Blizortung show's widespread thunderstorm activity over Auckland right now

yes. and more is forecast throughout the day.

David · Unread post by **David** » Sun 08/09/2019 03:17

Don't think many people will be asleep here anymore... Just had an absolutely huge thunder clap!

tornado · Unread post by **tornado** » Sun 08/09/2019 03:21

David wrote: ↑Sun 08/09/2019 03:17 Don't think many people will be asleep here anymore... Just had an absolutely huge thunder clap!

same. this thunderstorm is massive i saw it grow on radar. came all the way from austrialia.

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Tasman low and cold air collision September 7-9

Tasman low and cold air collision September 7-9

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Re: Tasman low and cold air collision September 7-9