SWOMCD
SPC MCD 261730
GAZ000-ALZ000-261930-
MESOSCALE DISCUSSION 1334
NWS STORM PREDICTION CENTER NORMAN OK
1230 PM CDT FRI JUN 26 2009
AREAS AFFECTED...CNTRL AL...CNTRL GA
CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY
VALID 261730Z - 261930Z
CONVECTION IS BEGINNING TO DEVELOP WITHIN AN EAST-WEST LOW LEVEL
CONFLUENCE ZONE FROM WEST CENTRAL AL INTO CENTRAL GA. AS SURFACE
TEMPERATURES WARM INTO THE 90S AND DEW POINTS REMAIN IN THE LOW
70S...THE ENVIRONMENT IS BECOMING INCREASINGLY UNSTABLE WITH MLCAPE
OF 1500-2000 J/KG. WEAK WINDS IN THE LOW-MID LEVELS WILL RESULT IN
SLOW STORM MOVEMENT AND POTENTIAL FOR LOCALIZED HEAVY RAIN...WHILE
STRONGER NLY FLOW ABOVE 300 MB WILL ENHANCE STORM TOP DIVERGENCE AND
OVERALL STORM INTENSITY. DRIER AIR IN THE MID LEVELS IS
CONTRIBUTING TO STRONGER DOWNDRAFT POTENTIAL WITH DCAPE VALUES
GENERALLY GREATER THAN 1200 J/KG OVER THE AREA. THIS SUGGESTS A
THREAT FOR WET MICRO BURSTS/LOCALLY DAMAGING WIND GUSTS WITH A FEW
STORMS. LIMITED COVERAGE OF SEVERE THREAT IS EXPECTED TO PRECLUDE
THE NEED FOR A WW.
..WEISS.. 06/26/2009
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...FFC...TAE...BMX...MOB...
LAT...LON 33088811 33188714 33018634 33148502 32918391 32648248
32228250 31858309 31768477 31798597 32028743 32198824
32678832 33088811
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