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
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.
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