yes, two air streams running into each other, so stronger than the sea breeze type convergence. The storms were not supercells though.it was the very cold upper pool of air coinciding with a surface trough and convergence (forcing) that was the key...surely....
T-Storms for Central-East N.I. - Nov 14
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These topics are a read-only archive and may be subject to out-of-date information.
For today's weather discussion head to: New Zealand Weather & Climate
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NZstorm
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Re: T-Storms for Central-East N.I. - Nov 14
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Manukau heads obs
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Re: T-Storms for Central-East N.I. - Nov 14
although even with convergence forcing, as soon as the heating eased and the upper cold pool moved off, boy did things fizzle fast...like a sea breeze convergence does...
an interesting day...been a while !
an interesting day...been a while !
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Tornado Tim
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Re: T-Storms for Central-East N.I. - Nov 14
Yes SFC temps dropped off quite fast,it was 21°C or so In Tokoroa before the trough came through then it dropped to 15°C after that.Manukau heads obs wrote:although even with convergence forcing, as soon as the heating eased and the upper cold pool moved off, boy did things fizzle fast...
Surprisingly it cleared quite quickly there, heaps of orphaned anvils around 6.30PM when i decided to head back.
NZAPStrike.net - NZ Aus Pacific Strike Network
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NZstorm
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Re: T-Storms for Central-East N.I. - Nov 14
Also, the cold upper air and upper level divergence was clearing out by 6pm.