National Weather Service Raw Text Product

000 
WWUS20 KWNS 082039
SEL7  
SPC WW 082040
TXZ000-090200-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 307 
NWS STORM PREDICTION CENTER NORMAN OK 
340 PM CDT THU MAY 8 2003

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

       NORTHWEST INTO NORTH CENTRAL TEXAS

EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 340 PM UNTIL
900 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 EAST AND WEST
OF A LINE FROM 75 MILES NORTH OF FORT WORTH TEXAS TO 20 MILES
SOUTHWEST OF BROWNWOOD TEXAS.

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 300...WW 301...WW 302...WW
303...WW 304...WW 305...WW 306...


DISCUSSION...VERY UNSTABLE CONDITIONS CONTINUE EAST OF DRY LINE
ARCING FROM NEAR SPS TO JUST EAST OF ABI AT 20Z.  AS TEMPERATURES
APPROACH THE LOWER 90S EAST OF THE DRY LINE...CAP IS EXPECTED TO BE
OVERCOME AND SUPPORT SEVERE THUNDERSTORMS.  ACTIVITY SHOULD QUICKLY
EVOLVE INTO SUPERCELLS AND SHIFT ENEWD INTO NORTH CENTRAL TX THROUGH
THE EVENING.  PARAMETERS REMAIN FAVORABLE FOR TORNADOES WITH ANY
SUSTAINED SUPERCELLS.

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 25030.


...EVANS

335,0960 313,0980 313,1002 335,0983