|Mesoscale Discussion 343|
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Mesoscale Discussion 0343
NWS Storm Prediction Center Norman OK
0335 PM CDT Sat Mar 25 2023
Areas affected...portions of central and southern Georgia
Concerning...Severe Thunderstorm Watch 79...
Valid 252035Z - 252200Z
The severe weather threat for Severe Thunderstorm Watch 79
SUMMARY...The severe threat continues across Severe Thunderstorm
Watch 079. Damaging gusts and large hail are the main threats. A
local WW extension in time is planned.
DISCUSSION...Multiple strong to potentially severe supercell
thunderstorms continue to progress across Severe Thunderstorm Watch
079. MRMS mosaic radar imagery - 7 km CAPPI depicts an overall
increase in storm intensity across the watch, with an increase in
the number of storms with 30 dBZ exceeding 40 kft also noted. These
storms are benefiting from a boundary layer experiencing maximum
diurnal heating, overspread by a plume of 7 C/km mid-level lapse
rates, contributing to widespread 2000+ J/kg MLCAPE. Despite
departing deep-layer ascent, 40-50 kts of effective bulk shear
remains across the warm sector as 80+ kts of 500 mb flow from an
associated jet streak glances the region from the north. As such,
supercell structures may persist and continue supporting mainly a
damaging gust/large hail threat through the remainder of the diurnal
heating cycle. Since Severe Thunderstorm Watch 079 expires at the
top of the hour, a local extension in time is planned to address the
persisting severe threat.
...Please see www.spc.noaa.gov for graphic product...
LAT...LON 31388508 32178379 32588267 32608239 32228224 31568235
31048259 30758310 30648374 30678417 30858479 31388508
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