NZTS Gives MetService a Tick

NZ Thunderstorm Soc · Sun 28/03/2004 16:59

MetSerivice done well yesterday (27th March) for accurately forecasting thunderstorm activity around Bank's Peninsula yesterday ...
... and they deserve some credit

JohnGaul
NZTS

tich · Unread post by **tich** » Sun 28/03/2004 21:30

They got that one right (I should know - I was there to witness it live), but they continued to predict thunderstorms for today in their forecast early this morning, after it had cleared up. But they soon changed that forecast.

spwill · Unread post by **spwill** » Sun 28/03/2004 22:11

Yes, well done to Met Service for forecasting the weekend Thunderstorms in Canterbury but it wasn't a big call, most of us knew 6 days back that this weekends weather situation was a potential Thunderstorm situation .

Michael · Unread post by **Michael** » Sun 28/03/2004 22:21

Its like them telling us it will be fine and sunny so often and its always overcast

NZ Thunderstorm Soc · Sun 28/03/2004 23:06

Not so good tonight...
No thunder/lightning whatever but we got a good dollop of rain, 8.2mm up to 11pm here. NO hail from what I observed but showers with good watery drops, which could of been hail initially but turned to big raindrops before reaching the ground. Is there a meterological term for this?
All died down now with a hint of clearing, unfortunately

Barometer rising also

JohnGaul
NZTS

Thunder · Unread post by **Thunder** » Sun 28/03/2004 23:37

Got good rain here to John, not sure on how much, will check tomorrow morning. The rain was intense at times and we also had hail, only small stuff but it came down pretty fiercly. When I looked up outside all the hail coming down was illuminated by general street lightning and houses etc, it was sure moving fast and more horizontal than vertical!!
Still windy here now but rain has died down a bit but still occasional heavy showers are coming through, off to bed!

NZstorm · Unread post by **NZstorm** » Mon 29/03/2004 17:44

That was quite an unstable pool that passed through Sat. evening. The reasons Tstorms didn't develop over Canterbury is that the land was too cold, no convective lift while the sea temperatures are 15-16C off Canterbury at the moment. So good thermal lift off the sea. Ofcoarse the upper WSW pushed the convection away.

TonyT · Unread post by **TonyT** » Mon 29/03/2004 22:27

NZstorm wrote:That was quite an unstable pool that passed through Sat. evening. The reasons Tstorms didn't develop over Canterbury is that the land was too cold, no convective lift while the sea temperatures are 15-16C off Canterbury at the moment. So good thermal lift off the sea. Ofcoarse the upper WSW pushed the convection away.

The air was too dry - no low level moisture (convergent or otherwise).

NZ Thunderstorm Soc · Tue 30/03/2004 23:31

The land was warm on Saturday. NW winds ... but the fact that BP sticks out in a such an unstable SW airflow, it had something to do with the resulting instability which lead to the thunderstorm activity on Saturday night. Winds eventually became variable after the front went through, well they were about 11pm when I got home.

JohnGaul
NZTS

NZstorm · Unread post by **NZstorm** » Wed 31/03/2004 06:58

Yes, its the Island affect.

I notice on the Met Service lightning chart there was some ts activity right up the South Island East Coast with that trough.