SWOMCD
SPC MCD 072310
GAZ000-ALZ000-MSZ000-080115-
MESOSCALE DISCUSSION 1889
NWS STORM PREDICTION CENTER NORMAN OK
0610 PM CDT SUN AUG 07 2011
AREAS AFFECTED...NRN MS/AL/GA
CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY
VALID 072310Z - 080115Z
A THREAT FOR ISOLATED WET MICROBURSTS AND LOCALLY HEAVY RAIN SHOULD
PERSIST THROUGH THE NEXT FEW HOURS WITHIN AN EXTREMELY BUOYANT/VERY
HIGH PW CONTENT AIR MASS. MODEST DEEP-LAYER SHEAR SHOULD PRECLUDE A
MORE ORGANIZED SEVERE THREAT.
12-HR LOOP OF WATER VAPOR IMAGERY SUGGESTS AN UNDULAR BORE EMANATING
SEWD FROM MORNING TSTMS OVER THE MID-MO VALLEY HAS AIDED IN
SCATTERED TSTM INITIATION ALONG A W/E-ORIENTED CORRIDOR FROM NERN MS
INTO NRN GA. AIR MASS WITHIN THIS CORRIDOR IS CHARACTERIZED BY PW
VALUES AROUND 2 INCHES...AND IS EXTREMELY BUOYANT ACROSS MS/NWRN AL
WITH MLCAPE AOA 4000 J/KG. ALTHOUGH AREA VWP DATA SAMPLES A BAND OF
SLIGHTLY STRONGER NWLY FLOW /FROM 20-30 KT/ BETWEEN 2-4 KM
AGL...DEEP-LAYER SHEAR REMAINS WEAK. NEVERTHELESS...THE THREAT FOR
LOCALIZED DAMAGING WINDS FROM EMBEDDED MICROBURSTS WILL EXIST. HEAVY
RAIN MAY BE THE MORE PREDOMINANT THREAT ACROSS NERN MS/NWRN AL GIVEN
POTENTIAL CELL REGENERATION AND A SLOW NET-SEWD PROPAGATION OF THE
CLUSTER.
..GRAMS.. 08/07/2011
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...GSP...FFC...BMX...HUN...MEG...JAN...
LAT...LON 33748651 33678879 34298963 34698940 34878820 34888433
34728342 34308299 34118306 33978336 33748651
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