

668 

WWUS20 KWNS 270031

SEL3

SPC WW 270031

OKZ000-TXZ000-270400-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 73

NWS STORM PREDICTION CENTER NORMAN OK

735 PM CDT THU MAR 26 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTH CENTRAL OKLAHOMA

       NORTH CENTRAL TEXAS



EFFECTIVE THIS THURSDAY EVENING FROM 735 PM UNTIL 1100 PM CDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55

STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES NORTHEAST OF

ARDMORE OKLAHOMA TO 60 MILES SOUTHWEST OF SHERMAN TEXAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU3).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



OTHER WATCH INFORMATION...CONTINUE...WW 71...WW 72...



DISCUSSION...A SMALL CLUSTER OF SEVERE STORMS HAS DEVELOPED ALONG

THE DRYLINE SOUTH OF ADM.  THESE STORMS MAY PERSIST FOR A FEW HOURS

WITH A RISK OF LARGE HAIL AND DAMAGING WINDS.  RAPID COOLING AFTER

SUNSET IS EXPECTED TO LESSEN THE TORNADO RISK.



AVIATION...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 450. MEAN STORM

MOTION VECTOR 27035.





...HART

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