SWOMCD
SPC MCD 280447
GAZ000-ALZ000-MSZ000-280645-
MESOSCALE DISCUSSION 0171
NWS STORM PREDICTION CENTER NORMAN OK
1047 PM CST FRI FEB 27 2009
AREAS AFFECTED...PORTIONS OF MS/AL
CONCERNING...SEVERE THUNDERSTORM WATCH 39...
VALID 280447Z - 280645Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 39
CONTINUES.
WIDESPREAD ELEVATED CONVECTION CONTINUES ACROSS WW AREA...ALONG WITH
LIMITED SEVERE THREAT.
LATEST RADAR DEPICTS WIDESPREAD SHOWERS AND THUNDERSTORMS CONTINUING
ACROSS ROUGHLY THE NRN HALVES OF MS AND AL...WITHIN ENVIRONMENT
FEATURING MARGINAL INSTABILITY ATOP A STABLE/RAIN-COOLED BOUNDARY
LAYER. CLOUD TOPS CONTINUE TO COOL PER LATEST IR IMAGERY...AS MAIN
UPPER SHORT-WAVE TROUGH DIGS SSEWD ACROSS THE PLAINS AND A SMALLER
FEATURE SHIFTS ACROSS THE OZARKS REGION. THIS IMPLIED INCREASE IN
ASCENT SHOULD CONTINUE TO SUPPORT WIDESPREAD CONVECTION OVER THE
NEXT SEVERAL HOURS. WITH SHEAR SUPPORTIVE OF ORGANIZED
STORMS...SOME THREAT FOR SEVERE STORMS PERSISTS. HOWEVER...OVERALL
LACK OF INSTABILITY SHOULD KEEP THE THREAT GENERALLY ISOLATED.
..GOSS.. 02/28/2009
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...FFC...TAE...BMX...MOB...MEG...JAN...
LAT...LON 32369020 33379050 34069031 33408522 31648519 32369020
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