SWOMCD
SPC MCD 252229
LAZ000-MSZ000-TXZ000-260000-
MESOSCALE DISCUSSION 0264
NWS STORM PREDICTION CENTER NORMAN OK
0529 PM CDT WED MAR 25 2009
AREAS AFFECTED...EAST TX...CNTRL LA
CONCERNING...TORNADO WATCH 63...
VALID 252229Z - 260000Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 63 CONTINUES.
THE TORNADO...LARGE HAIL AND WIND DAMAGE THREAT WILL INCREASE OVER
THE NEXT FEW HOURS. A TORNADO WATCH WILL NEED TO BE ISSUED FOR PARTS
OF EAST TX AND CNTRL LA.
SFC ANALYSIS SHOWS A FRONTAL BOUNDARY FROM CNTRL TX EWD INTO CNTRL
LA WITH DEWPOINTS SOUTH OF THE BOUNDARY IN THE LOWER TO MID 60S F.
THIS IS CONTRIBUTING TO SBCAPE VALUES ABOVE 1000 J/KG WHICH WILL BE
SUFFICIENT FOR STRONG UPDRAFTS AS NEW STORMS INITIATE IN EAST TX
OVER THE NEXT FEW HOURS. THE LATEST WSR-88 VWPS FROM EAST TX SHOW
STRONG LOW-LEVEL SHEAR PROFILES AND ABOUT 60 KT OF VERTICAL SHEAR.
THIS WILL BE SUFFICIENT FOR A SUPERCELL THREAT AND THIS THREAT
SHOULD PERSIST. TORNADOES WITH THE POSSIBILITY OF AN ISOLATED STRONG
TORNADO WILL BE POSSIBLE. LARGE HAIL AND ISOLATED WIND DAMAGE WILL
ALSO ACCOMPANY THE STRONGER CELLS.
..BROYLES.. 03/25/2009
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...JAN...LIX...LCH...SHV...HGX...FWD...EWX...
LAT...LON 30989290 30619451 30099626 30069714 30459741 31019727
31429622 31899464 32169320 32219219 31849151 31159152
31049223 30989290
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