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000 

WWUS20 KWNS 150117

SEL2

SPC WW 150117

ARZ000-KSZ000-MOZ000-OKZ000-150900-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 112

NWS STORM PREDICTION CENTER NORMAN OK

820 PM CDT FRI MAR 14 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTHWEST ARKANSAS

       FAR SOUTHEAST KANSAS

       FAR SOUTHWEST MISSOURI

       CENTRAL AND EASTERN OKLAHOMA



EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 820 PM

UNTIL 400 AM CDT.



HAIL TO 1 INCH 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 80

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 45 MILES WEST

SOUTHWEST OF PONCA CITY OKLAHOMA TO 25 MILES SOUTHEAST OF

FAYETTEVILLE ARKANSAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE

THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



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 111...



DISCUSSION...SMALL MCS BEGINNING TO FORM OVER N CNTRL OK AHEAD OF

ESE-MOVING MID-LEVEL VORT MAX MAY POSE AN INCREASING THREAT FOR DMGG

WIND AND POSSIBLY MARGINALLY SVR HAIL GIVEN MDT TO STRONG

UNIDIRECTIONAL MID-LEVEL FLOW...STEEP LOW TO MID-LEVEL LAPSE RATES

AND FAIRLY DEEP...DRY SUB-CLOUD LAYER.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.

A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 400. MEAN STORM MOTION

VECTOR 28035.





...CORFIDI

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