MD 1837 CONCERNING TORNADO WATCH 545… FOR SOUTHERN FLORIDA
Mesoscale Discussion 1837
NWS Storm Prediction Center Norman OK
0539 PM CDT Tue Sep 27 2022
Areas affected...southern Florida
Concerning...Tornado Watch 545...
Valid 272239Z - 280045Z
The severe weather threat for Tornado Watch 545 continues.
SUMMARY...The threat of supercells within the outer bands of Ian
will continue to pose a tornado risk through the evening.
DISCUSSION...A northwest-southeast oriented band of supercells
continues to translate north across southern FL, with periodic
strong rotation and brief tornadoes. These storms may eventually
encounter slightly lower boundary-layer theta-e as they gain
latitude. However, advection of upper 70s F to near 80 F dewpoints
will persist to the south, with slowly veering surface winds.
Deep-layer effective shear is oriented quite favorably in relation
to the outer convective bands, with a large component across the
bands. This should aid supercellular storm mode, and the possibility
of rightward motions relative to the weaker echoes, maximizing SRH.
..Jewell.. 09/27/2022
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...MFL...MLB...KEY...TBW...
LAT...LON 26998253 27158204 27318120 27268056 26957997 26197998
25468003 24948040 24618105 24488180 24748196 25608198
26278207 26998253
