SWOMCD
SPC MCD 280038
GAZ000-ALZ000-MSZ000-LAZ000-ARZ000-280215-
MESOSCALE DISCUSSION 0169
NWS STORM PREDICTION CENTER NORMAN OK
0638 PM CST FRI FEB 27 2009
AREAS AFFECTED...NERN LA/SERN AR AND EWD INTO PARTS OF MS/AL...
CONCERNING...TORNADO WATCH 38...
VALID 280038Z - 280215Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 38 CONTINUES.
SEVERE/ISOLATED TORNADO THREAT CONTINUES -- AND IS EXPECTED TO
CONTINUE BEYOND THE 28/02Z SCHEDULED EXPIRATION OF WW 0038. THIS
WILL LIKELY REQUIRE WW RE-ISSUANCE ACROSS MUCH OF THIS SAME AREA.
LATEST RADAR IMAGERY CONTINUES TO SHOW THE STRONGEST STORMS ACROSS
CENTRAL AL AND VICINITY ATTM...WITH A RELATIVE LULL IN CONVECTION
OVER CENTRAL AND WRN MS WWD TO THE MS RIVER. WHILE A
SEVERE/ISOLATED TORNADO THREAT REMAINS MOST IMMEDIATE ACROSS
AL...STORMS ARE EXPECTED TO RE-DEVELOP FARTHER W ACROSS MS AND
VICINITY AS QG ASCENT INCREASES THIS EVENING AHEAD OF COMPLEX
SHORT-WAVE TROUGH DIGGING SEWD ACROSS THE PLAINS. MUCH OF THIS
CONVECTION WILL LIKELY REMAIN ELEVATED...WITHIN ZONE OF WARM
ADVECTION/ISENTROPIC ASCENT. HOWEVER...WITH A WEAK SURFACE WAVE
PROGGED TO DRIFT ENEWD FROM NERN TX ACROSS THE LOWER MS VALLEY AND
RESULTING POSSIBILITY OF SOME NWD OSCILLATION OF THE W-E FRONT OVER
MS/AL...SOME POTENTIAL FOR NEARLY SURFACE-BASED STORMS -- AND
ASSOCIATED WIND/ISOLATED TORNADO THREAT -- APPEARS POSSIBLE. THIS
ZONE OF POTENTIAL SHOULD SET UP ACROSS THE CENTRAL THIRDS OF MS AND
AL LATER THIS EVENING...IN THE WAKE OF THE INITIAL CLUSTER OF STORMS
NOW ONGOING OVER CENTRAL AR.
..GOSS.. 02/28/2009
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...FFC...TAE...BMX...MOB...MEG...JAN...SHV...
LAT...LON 32949232 33209201 33749025 33548577 32408471 31268494
32109179 32949232
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