Possible Thunderstorms for the 17th of September
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For today's weather discussion head to: New Zealand Weather & Climate
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For today's weather discussion head to: New Zealand Weather & Climate
- Tornado Tim
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Possible Thunderstorms for the 17th of September
It seems a trough will pass over central North Island and with that some thunderstorms may occur.
M/S has updated there outlook to include Auckland and Eastern Waikato, less likely the the west however.
Here is Skew T for 2 PM, this this the time that seems to have the most action.
A 14°C DP, and a current temp of around 17-18°C will help with anything that forms.
M/S has updated there outlook to include Auckland and Eastern Waikato, less likely the the west however.
Here is Skew T for 2 PM, this this the time that seems to have the most action.
A 14°C DP, and a current temp of around 17-18°C will help with anything that forms.
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Last edited by Tornado Tim on Thu 17/09/2009 10:21, edited 1 time in total.
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- DT-NZ
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Re: Possible Thunderstorms for the 17th of September
Thanks Tim
Lightning in NZ
The right terminology lends a hint as to the nature of the different forms.
A Vertigo Quote.
The right terminology lends a hint as to the nature of the different forms.
A Vertigo Quote.
- Tornado Tim
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Re: Possible Thunderstorms for the 17th of September
It doesnt look good, looking at the sky anyway. Stable clouds... uh
Anyway today was out of the blue.
Anyway today was out of the blue.
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Re: Possible Thunderstorms for the 17th of September
I think this type of situation in summer would be deeply convective but in September there is not quite the afternoon heating to generate the CAPE/sea breezes. The effective dewpoint is about 9C or 10C by the looks.
Todays midday sounding.
Todays midday sounding.
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- Tornado Tim
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Re: Possible Thunderstorms for the 17th of September
We have some action now, focus you eyes to the SW.
A very nice CB Calvus has passed the stable layer and just by looking at it you can see it grow!
It doesn't look that big in the pics but it is growing quite rapidly.
Update: Most of the convection has died
A very nice CB Calvus has passed the stable layer and just by looking at it you can see it grow!
It doesn't look that big in the pics but it is growing quite rapidly.
Update: Most of the convection has died
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- tgsnoopy
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Re: Possible Thunderstorms for the 17th of September
A couple of short sharp showers in the Papamoa/Te Puke area around 1pm, otherwise nothing much happened. Was quite a reasonable day otherwise.
- Tornado Tim
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Re: Possible Thunderstorms for the 17th of September
um what are M/S on: http://www.metservice.co.nz/public/weat ... watch.html
They must have reason to issue this, but i dont see what the fuss is about.
For reference:
They must have reason to issue this, but i dont see what the fuss is about.
For reference:
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Re: Possible Thunderstorms for the 17th of September
What did the text say? There were some impressive showers from inland Taranaki to the Central Plateau today....from about 3PM to 5PM but they fell right away after that.Tornado Tim wrote:um what are M/S on: http://www.metservice.co.nz/public/weat ... watch.html
They must have reason to issue this, but i dont see what the fuss is about.
For reference:
http://www.metservice.com/public/maps/r ... 8-hrs.html
I wonder if they got worried because these showers started up mid afternoon, and the upper trough was still approaching. So the vorticity advection and cooling aloft could potentially have caused some greater action. I dunno really, just thinking aloud. Going from moderate risk of TS to issuing a severe TS watch can't be too common?
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Re: Possible Thunderstorms for the 17th of September
Stratford recieved 40mm in just 30 mins, this would have sparked the severe watch.um what are M/S on: http://www.metservice.co.nz/public/weat ... watch.html
They must have reason to issue this, but i dont see what the fuss is about.
There was a thunderstorm over the southern NorthIsland high country .
Another dry day here with stable looking skies , radar showed isolated afternoon showers over Waikato as shown in your photos Tim
- Nev
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Re: Possible Thunderstorms for the 17th of September
Nice funnel-pic snapped near Stratford yesterday in this story from the Taranaki Daily News...
'Another Taranaki twister?'
'Another Taranaki twister?'