Subj : MESO: Mesoscale Discussion 1671
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Fri Jul 21 2023 22:50:52

ACUS11 KWNS 212250
SWOMCD
SPC MCD 212250=20
GAZ000-SCZ000-NCZ000-TNZ000-ALZ000-220015-

Mesoscale Discussion 1671
NWS Storm Prediction Center Norman OK
0550 PM CDT Fri Jul 21 2023

Areas affected...Northern Alabama and northern Georgia.

Concerning...Severe Thunderstorm Watch 536...538...

Valid 212250Z - 220015Z

The severe weather threat for Severe Thunderstorm Watch 536, 538
continues.

SUMMARY...A damaging wind threat will continue through the evening.

DISCUSSION...Several clusters of thunderstorms have developed and
continue to move east-southeast across northern Alabama and northern
Georgia. These storms are moving through an airmass with 1500 to
2500 J/kg MLCAPE (per SPC mesoanalysis) and effective shear around
25 knots (per FFC VWP). This should continue to support multicell
organization. The threat should start to wane after sunset once the
boundary layer starts to cool, but a moist boundary layer, with mid
70s dewpoints, may be sufficient for some threat to linger after
dark. The warm airmass and only marginal shear should keep the
large-hail threat muted, with damaging wind gusts as the primary
threat.

...Bentley.. 07/21/2023

....Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj=
g!-gD2UDRhZlDtlF2c6RQ7mKB0ecSGHKEygCbd-P-OIPEXu4ScKpwNVcdKJ7EkBTWhGlRjkAsUS=
iZialomy5XWGSPxYSY$  for graphic product...

ATTN...WFO...CAE...GSP...MRX...FFC...BMX...HUN...

LAT...LON   32748829 33388824 33648754 34048704 34348675 34878650
            35178567 35168390 34638317 33898258 33078235 32528268
            32368666 32748829=20


=3D =3D =3D
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