

000 

WWUS20 KWNS 021251

SEL9

SPC WW 021251

KSZ000-MOZ000-NEZ000-021900-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 419

NWS STORM PREDICTION CENTER NORMAN OK

750 AM CDT MON JUN 2 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTH-CENTRAL AND NORTHEASTERN KANSAS

       NORTHWESTERN AND EXTREME WEST-CENTRAL MISSOURI

       SOUTH-CENTRAL AND SOUTHEASTERN NEBRASKA



EFFECTIVE THIS MONDAY MORNING AND AFTERNOON FROM 750 AM UNTIL 200

PM CDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55

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

SOUTHWEST OF KEARNEY NEBRASKA TO 15 MILES NORTH NORTHEAST OF

KANSAS CITY MISSOURI.  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...THIS SEVERE THUNDERSTORM WATCH REPLACES

SEVERE THUNDERSTORM WATCH NUMBER 418. WATCH NUMBER 418 WILL NOT

BE IN EFFECT AFTER 750 AM CDT.



DISCUSSION...DEVELOPING MCS -- ASTRIDE CENTRAL PORTIONS KS/NEB

BORDER AS OF WW ISSUANCE -- IS EXPECTED TO CONTINUE TO

ORGANIZE/INTENSIFY AS IT MOVES ESEWD PARALLEL TO LOW LEVEL WARM

FRONTAL ZONE.  LARGE HAIL IS PRIMARY INITIAL THREAT.

HOWEVER...FOREGOING INFLOW LAYER AIR MASS SHOULD BECOME ROOTED

PROGRESSIVELY CLOSER TO SFC WITH TIME AS BOUNDARY LAYER DIABATICALLY

DESTABILIZES.  THIS PROCESS -- COMBINED WITH POSSIBLE BOWING

ORGANIZATION TO CONVECTION -- SHOULD RESULT IN INCREASING THREAT FOR

SVR WIND AT SFC.



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 29035.





...EDWARDS/CORFIDI

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