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| Mesoscale Discussion 145 |
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MESOSCALE DISCUSSION 0145
NWS STORM PREDICTION CENTER NORMAN OK
0605 PM CST SUN FEB 10 2013
AREAS AFFECTED...WRN FL PANHANDLE...S CENTRAL AND SE AL
CONCERNING...TORNADO WATCH 33...
VALID 110005Z - 110130Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 33 CONTINUES.
SUMMARY...MATURE SUPERCELLS MAY SURVIVE EWD INTO THE WEAK
INSTABILITY ENVIRONMENT IN AL/WRN FL PANHANDLE WHERE SOME SLOW
MOISTENING IS OCCURRING. THE ISOLD TORNADO THREAT E OF WW 32 WILL
BE COVERED BY LOCAL WATCH EXTENSIONS FROM BHM AND MOB.
DISCUSSION...A BROKEN BAND OF SUPERCELLS CONTINUES TO STREAM
ENEWD/EWD FROM SE MS INTO SW AL THIS EVENING. THE MAJORITY OF THE
STORMS HAVE BEEN FORMING AND MATURING UPSTREAM ACROSS SRN MS...IN
PROXIMITY TO THE WARMER BOUNDARY LAYER AND RICHER MOISTURE ALONG AND
IMMEDIATELY S OF THE MARINE WARM FRONT. THOUGH BUOYANCY WEAKENS
WITH EWD EXTENT ACROSS AL...VERTICAL SHEAR PROFILES REMAIN QUITE
FAVORABLE FOR SUPERCELLS WITH 0-1 KM SRH NEAR 400 M2/S2 AND 0-6 KM
BULK SHEAR NEAR 60 KT IN A MOIST ENVIRONMENT. GIVEN THE ORGANIZED
STORM STRUCTURES AND SOME WEAK DESTABILIZATION ACROSS THE WRN FL
PANHANDLE AND S CENTRAL/SE AL THIS EVENING...WILL COVER THE ISOLD
TORNADO AND DAMAGING GUST THREAT WITH LOCAL WATCH EXTENSIONS ISSUED
BY BHM AND MOB. OTHERWISE...WILL CONTINUE TO MONITOR AREAS TOWARD
SW GA AND FAR SE AL THROUGH EARLY TONIGHT FOR SOME INCREASE IN
SEVERE THREAT...THOUGH THE MORE LIMITED MOISTURE AND BUOYANCY THIS
FAR E MAKE THE SEVERE THREAT SOMEWHAT UNCERTAIN.
..THOMPSON/KERR.. 02/11/2013
ATTN...WFO...TAE...BMX...MOB...
LAT...LON 30648730 30908759 31288742 31738702 32278584 32268542
31998512 31748522 31498609 30718669 30648730
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