

894 

WWUS20 KWNS 072207

SEL3

SPC WW 072207

KSZ000-OKZ000-080500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 343

NWS STORM PREDICTION CENTER NORMAN OK

510 PM CDT SUN JUN 7 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CENTRAL AND SOUTHEAST KANSAS

       NORTH CENTRAL OKLAHOMA



EFFECTIVE THIS SUNDAY AFTERNOON FROM 510 PM UNTIL MIDNIGHT 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 105

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

ALVA OKLAHOMA TO 40 MILES NORTHEAST OF CHANUTE KANSAS.  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 341...WW 342...



DISCUSSION...SCATTERED THUNDERSTORMS ARE INCREASING ALONG LEADING

EDGE OF DEEPLY MIXED BOUNDARY LAYER OVER SOUTH CENTRAL KS AND

NORTHWEST OK.  THIS ACTIVITY WILL SPREAD EASTWARD ACROSS SOUTHEAST

KS AND POSSIBLY NORTHEAST OK LATER THIS EVENING.  ORGANIZED

MULTICELL STORMS AND A FEW SUPERCELLS ARE POSSIBLE...WITH LARGE HAIL

AND DAMAGING WINDS POSSIBLE.



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 550. MEAN STORM

MOTION VECTOR 26035.





...HART

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