

504 

WWUS20 KWNS 291737

SEL0

SPC WW 291737

TXZ000-300100-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 210

NWS STORM PREDICTION CENTER NORMAN OK

1240 PM CDT WED APR 29 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       PARTS OF NORTHWEST TEXAS



EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 1240 PM UNTIL

800 PM CDT.



TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 50 MILES NORTH OF MIDLAND

TEXAS TO 45 MILES NORTHEAST OF MINERAL WELLS TEXAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU0).



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 209...



DISCUSSION...THUNDERSTORMS REDEVELOPING IN A VERY UNSTABLE AIR MASS

ALONG RESIDUAL OUTFLOW BOUNDARIES. WITH MLCAPES RISING TO 3000 J/KG

THIS AFTERNOON AND 35-45KT OF DEEP LAYER SHEAR...SUPERCELLS ARE THE

MOST LIKELY MODE.  IN ADDITION TO VERY LARGE HAIL...TORNADOES WILL

BECOME INCREASINGLY A THREAT DURING THE AFTERNOON.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

550. MEAN STORM MOTION VECTOR 24020.





...HALES



292 

WWUS20 KWNS 291737

SEL0

SPC WW 291737

TXZ000-300100-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 210...RESENT

NWS STORM PREDICTION CENTER NORMAN OK

1240 PM CDT WED APR 29 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       PARTS OF NORTHWEST TEXAS



EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 1240 PM UNTIL

800 PM CDT.



TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 50 MILES NORTH OF MIDLAND

TEXAS TO 45 MILES NORTHEAST OF MINERAL WELLS TEXAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU0).



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 209...



DISCUSSION...THUNDERSTORMS REDEVELOPING IN A VERY UNSTABLE AIR MASS

ALONG RESIDUAL OUTFLOW BOUNDARIES. WITH MLCAPES RISING TO 3000 J/KG

THIS AFTERNOON AND 35-45KT OF DEEP LAYER SHEAR...SUPERCELLS ARE THE

MOST LIKELY MODE.  IN ADDITION TO VERY LARGE HAIL...TORNADOES WILL

BECOME INCREASINGLY A THREAT DURING THE AFTERNOON.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

550. MEAN STORM MOTION VECTOR 24020.





...HALES

