|Mesoscale Discussion 129|
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Mesoscale Discussion 0129
NWS Storm Prediction Center Norman OK
0337 AM CST Mon Jan 23 2017
Areas affected...Extreme South Florida including the upper portion
of the Keys
Concerning...Tornado Watch 24...
Valid 230937Z - 231030Z
The severe weather threat for Tornado Watch 24 continues.
SUMMARY...A band of strong to occasionally severe storms, currently
moving through the coastal areas of Miami-Dade and Monroe Counties,
and the upper portion of the Florida Keys will move offshore by 10Z
(5 AM EST) ending the severe-weather threat across South Florida.
DISCUSSION...Satellite imagery and lightning data showed a 650-700
mile long band of thunderstorms extending from 160- to 200-nm off
the NC and SC coasts, respectively, to the coast of extreme South FL
and into the Florida Straits (south of Key West, FL). Cape/shear
parameter space along and south of the ongoing band of storms
continues to support locally strong winds gusts and/or a tornado as
the line advances to the east/southeast at 25-30 kt. Overall
severe-weather threat is expected to end for South FL by 10Z.
LAT...LON 24788090 25378035 26237962 26877891 26187909 25467917
24597947 24368033 24428098 24788090
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