Storm Prediction Center Discussions


MD 0368 CONCERNING SEVERE THUNDERSTORM WATCH 91... FOR PARTS OF CENTRAL AND SOUTHERN FLORIDA
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Mesoscale Discussion 0368
NWS Storm Prediction Center Norman OK
1224 PM CDT Sun Apr 11 2021

Areas affected...parts of central and southern Florida

Concerning...Severe Thunderstorm Watch 91...

Valid 111724Z - 111930Z

The severe weather threat for Severe Thunderstorm Watch 91
continues.

SUMMARY...Severe risk continues locally across parts of central
Florida -- within WW 91 -- and will gradually shift southward
requiring new WW consideration across much of south Florida.

DISCUSSION...Latest radar loop shows a band of storms sagging
southward across central Florida, with occasionally stronger
storms/convective segments noted.  As outflow associated with this
band shifts steadily southward, the primary zone of severe risk will
likewise shift south -- and eventually out of the current WW.

Meanwhile, as the very moist south Florida airmass continues to
warm/destabilize, additional/cellular development is occurring south
of the main convective band.  Given sufficient shear across the
area, a few of these storms could produce gusty winds and hail,
prior to the arrival of storms from the north.  Given these trends,
a new WW will likely be required in the next 60 to 90 minutes,
across much of south Florida.

..Goss.. 04/11/2021

...Please see www.spc.noaa.gov for graphic product...

ATTN...WFO...MFL...MLB...TBW...

LAT...LON   27138297 27428251 27688149 27878018 26977977 25937990
            25568042 25538144 26138241 27138297 

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Updated 11 April 2021 | 12:25 pm