SPC MD 868
[html]MD 0868 CONCERNING SEVERE POTENTIAL...WATCH UNLIKELY FOR PORTIONS OF SOUTHERN ALABAMA INTO SOUTHWEST GEORGIA
Mesoscale Discussion 0868
NWS Storm Prediction Center Norman OK
1048 AM CDT Sun May 22 2022
Areas affected...portions of southern Alabama into southwest Georgia
Concerning...Severe potential...Watch unlikely
Valid 221548Z - 221745Z
Probability of Watch Issuance...20 percent
SUMMARY...A couple damaging gusts may acco*pany the leading line of
storms into the early afternoon hours. A WW issuance is not expected
given the isolated and marginal nature of the severe threat.
DISCUSSION...A tropical MCS, characterized by a -7 to -10 F
temperature deficit/cold pool, is progressing northward within a
modest deep-layer wind profile. While deep-layer ambient shear is
weak, the leading-line of the MCS is progressing towards warmer
temperatures across southern Alabama/southwest Georgia, which are
approaching the lowers 80s F and may warm further before the MCS
arrives. As such, further boundary-layer mixing may support a couple
of damaging gusts associated with this MCS as it progresses
northward (as suggested by the 12Z hr**). 15Z mesoanalysis shows
increasing DCAPE in advance of the leading line, indicative of a
thermodynamic profile supportive of damaging gust potential with
continued evaporative cooling/northward cold pool progression.
Nonetheless, the severe threat is expected to remain relatively
isolated and brief given the lack of stronger upper support and
vertical shear, and a WW issuance is not expected.
..Squitieri.. 05/22/2022
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...FFC...TAE...BMX...MOB...
LAT...LON 30908425 30578492 30718543 30928608 30968672 30908713
30768749 31458752 32448679 32848559 32648446 32068412
31458414 30908425
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Source: SPC MD 868 (http://ht**://www.spc.noaa.gov/products/md/md0868.html)