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584 

WWUS20 KWNS 202127

SEL9

SPC WW 202127

KSZ000-MOZ000-210300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 629

NWS STORM PREDICTION CENTER NORMAN OK

430 PM CDT FRI AUG 20 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       MUCH OF NORTHEAST KANSAS

       PARTS OF NORTHWEST MISSOURI



EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 430 PM UNTIL

1000 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 50

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 30 MILES EAST OF

OLATHE KANSAS TO 15 MILES NORTHWEST OF SALINA KANSAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU9).



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 627...WW 628...



DISCUSSION...E/W BOUNDARY JUST S OF I70 IN KS/NWRN MO WILL BE FOCUS

FOR REDEVELOPMENT OF SEVERE THUNDERSTORMS AS THE AIR MASS IS NOW

QUITE UNSTABLE AND WEAKLY CAPPED TO S OF BOUNDARY.  WITH APPROACH OF

MID LEVEL IMPULSE SUFFICIENT SHEAR FOR MULTICELL CLUSTERS AND

POSSIBLY SUPERCELLS ENHANCING BOTH THE WIND DAMAGE AND HAIL THREAT.

STORMS WILL MOVE EWD GENERALLY ALONG AND N OF BOUNDARY PRIOR TO

DEVELOPMENT OF COLD POOLS  WHICH WILL THEN MOVE ACTIVITY SEWD THIS

EVENING.



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 600. MEAN STORM

MOTION VECTOR 26025.





...HALES

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