

000 

WWUS20 KWNS 250130

SEL5

SPC WW 250130

OKZ000-TXZ000-250900-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 355

NWS STORM PREDICTION CENTER NORMAN OK

830 PM CDT SAT MAY 24 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       WESTERN AND SOUTHWEST OKLAHOMA

       NORTHWEST TEXAS AND A SMALL PART OF THE TEXAS PANHANDLE



EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 830 PM

UNTIL 400 AM 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 70

STATUTE MILES EAST AND WEST OF A LINE FROM 75 MILES SOUTH

SOUTHEAST OF CHILDRESS TEXAS TO 30 MILES NORTH NORTHEAST OF

CLINTON OKLAHOMA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).



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 348...WW 349...WW

350...WW 351...WW 352...WW 353...WW 354...



DISCUSSION...SCTD STRONG TO SVR TSTMS EXPECTED TO DEVELOP ALONG DRY

LINE RETREATING WNW ACROSS WW.  GIVEN QUALITY OF MOISTURE INFLOW AND

STEEP MID LEVEL LAPSE RATES...POTENTIAL WILL EXIST FOR LARGE HAIL

AND LOCALLY DMGG WIND DESPITE MODEST DEEP SHEAR.



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 500. MEAN STORM

MOTION VECTOR 24020.





...CORFIDI

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