SPC 2000Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0230 PM CDT Sun Mar 20 2022
Valid 202000Z - 211200Z
...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS SOUTH
FLORIDA...
...SUMMARY...
Locally damaging winds and marginally severe hail will be possible
during the late afternoon across south Florida.
...South FL...
No changes have been made to the Marginal Risk across south FL.
Isolated strong thunderstorm development remains possible late this
afternoon, with a threat of locally strong wind gusts and marginal
hail. See the previous discussion below for more information.
..Dean.. 03/20/2022
.PREV DISCUSSION... /ISSUED 1130 AM CDT Sun Mar 20 2022/
...Southern Florida...
A cold front will continue to settle southward across the region
through afternoon and evening. Although upper heights will rise and
convergence will tend to weaken the remainder of the day, a
residually moist low-level air mass, ample insolation/heating, and
weak boundary-layer inhibition should allow for isolated
thunderstorm development during the mid/late afternoon hours,
initially near the I-75 general vicinity (and south). A couple of
multicellular clusters may evolve in the presence of 20-30 kt
effective shear. Locally strong wind gusts and small to marginally
severe hail appear to be the most likely hazards, before convection
weakens after sunset over the Upper Keys/Florida Straits.
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