National Weather Service Raw Text Product

000 
WWUS20 KWNS 081119
SEL8  
SPC WW 081120
ARZ000-OKZ000-081400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 298 
NWS STORM PREDICTION CENTER NORMAN OK 
620 AM CDT THU MAY 8 2003

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF 

       WESTERN ARKANSAS
       EASTERN OKLAHOMA

EFFECTIVE THIS THURSDAY MORNING FROM 620 AM UNTIL 900 AM CDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 40 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 55 MILES WEST OF FORT SMITH ARKANSAS TO 70
MILES EAST SOUTHEAST OF FORT SMITH ARKANSAS.

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES SEVERE
THUNDERSTORM WATCH NUMBER 296. WATCH NUMBER 296 WILL NOT BE IN
EFFECT AFTER 620 AM CDT. CONTINUE...WW 295...WW 297...


DISCUSSION...SUPERCELL ALONG WARM FRONT SEGEMENT IN E CNTRL OK
EXPECTED TO CONTINUE E OR POSSIBLY ESE INTO WRN AR...BEFORE
WEAKENING IN RESPONSE TO INCREASING CINH.  SUFFICIENT LOW LEVEL
SHEAR APPEARS PRESENT /PER FSM VWP/ TO SUPPORT A TORNADO THREAT
GIVEN RICH BOUNDARY LAYER MOISTURE AND CHANNELING OF LOW LEVEL FLOW
BY TOPOGRAPHY. 

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550.
MEAN STORM MOTION VECTOR 27030.


...CORFIDI

355,0952 353,0931 342,0931 344,0952