

000 

WWUS20 KWNS 311005

SEL5

SPC WW 311005

KSZ000-OKZ000-311500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 145

NWS STORM PREDICTION CENTER NORMAN OK

505 AM CDT MON MAR 31 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHEAST KANSAS

       NORTHEAST OKLAHOMA



EFFECTIVE THIS MONDAY MORNING FROM 505 AM UNTIL 1000 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 50

STATUTE MILES EAST AND WEST OF A LINE FROM 40 MILES NORTHWEST OF

CHANUTE KANSAS TO 35 MILES SOUTH SOUTHEAST OF BARTLESVILLE

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 143...WW 144...



DISCUSSION...SUPERCELL CLUSTER OVER NE OK WILL LIKELY PERSIST FOR

SEVERAL MORE HOURS IN ASSOCIATION WITH A FEED OF VERY MOIST/UNSTABLE

AIR FROM THE S/SW.  THE TENDENCY FOR THE LLJ TO VEER TO SWLY WITH

TIME SHOULD GRADUALLY REDUCE LOW-LEVEL SHEAR AND ANY ATTENDANT

TORNADO THREAT...THUS LARGE HAIL/DAMAGING WINDS SHOULD BE THE

PRIMARY CONCERN THROUGH THE MORNING.



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 25020.





...THOMPSON

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