Severe Storm Outlook Narrative (AC)
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ACUS01 KWNS 211618
SWODY1
SPC AC 211617

Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1017 AM CST Fri Jan 21 2022

Valid 211630Z - 221200Z

...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON
ACROSS SOUTHEAST FL...

...SUMMARY...
Isolated, marginally severe hail or strong outflow gusts may occur
this afternoon across southeast Florida.

...Southeast FL this afternoon...
Surface heating is underway within cloud break across southeast FL,
immediately southeast of a stalled front.  Temperatures warming into
the upper 70s with dewpoints near 70 F will result in MLCAPE near or
just above 1000 J/kg this afternoon.  Background forcing for ascent
will be weak, so localized ascent along the stalled front and any
diffuse sea breeze boundaries suggest that only isolated storms will
form this afternoon across southeast FL.  Midlevel lapse rates will
not be particularly steep (6.5-7 C/km) and low-level flow will
remain weak, but the moderate buoyancy and some stronger flow aloft
(as reflected in effective bulk shear near 35 kt) could support a
low-end organized/supercell storm capable of producing marginally
severe hail and isolated strong outflow gusts later this afternoon.

..Thompson/Weinman.. 01/21/2022

$$


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