National Weather Service Raw Text Product

000 
WWUS20 KWNS 031841
SEL0  
SPC WW 031840
ARZ000-LAZ000-OKZ000-TXZ000-040100-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 220 
NWS STORM PREDICTION CENTER NORMAN OK 
140 PM CDT SAT MAY 3 2003

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

       FAR SOUTHWEST ARKANSAS
       NORTHWEST LOUISIANA
       SOUTH CENTRAL AND SOUTHEAST OKLAHOMA
       NORTH CENTRAL AND NORTHEAST TEXAS

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 140 PM UNTIL
800 PM CDT.

TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 70 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 50 MILES EAST NORTHEAST OF SHREVEPORT
LOUISIANA TO 35 MILES WEST SOUTHWEST OF ARDMORE OKLAHOMA.

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...CONTINUE...WW 219...


DISCUSSION...WARM FRONT IS BECOMING WELL DEFINED FROM NEAR THE SHV
AREA TO NORTH OF DFW THIS AFTERNOON.  18Z SOUNDING FROM FTW
INDICATES AIR MASS REMAINS SLIGHTLY CAPPED ATTM...THOUGH FURTHER
HEATING SHOULD SUPPORT RAPID THUNDERSTORM DEVELOPMENT NEAR THE
BOUNDARY IN THE NEXT 1-2 HOURS.  DEEP LAYER SHEAR REMAINS VERY
SUPPORTIVE OF SUPERCELLS... WITH LIKELY EVOLUTION INTO
HP-STRUCTURES...AND AN ATTENDANT THREAT OF VERY LARGE HAIL AND
ISOLATED TORNADOES.  ACTIVITY WILL SHIFT SEWD INTO NWRN LA THROUGH
THE EVENING...WITH POTENTIAL FOR ONE OR MORE BOW ECHO SYSTEMS
EVOLVING.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
MEAN STORM MOTION VECTOR 28025.


...EVANS

314,0930 330,0973 350,0973 334,0930