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WWUS20 KWNS 022317

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URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 655

NWS STORM PREDICTION CENTER NORMAN OK

620 PM CDT WED JUL 2 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTHEAST KANSAS

       NORTHWEST MISSOURI



EFFECTIVE THIS WEDNESDAY NIGHT FROM 620 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 60

STATUTE MILES EAST AND WEST OF A LINE FROM 20 MILES NORTHEAST OF

FALLS CITY NEBRASKA TO 50 MILES SOUTH OF OLATHE KANSAS.  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 653...WW 654...



DISCUSSION...MULTIPLE OUTFLOW BOUNDARY/STORM INTERACTIONS IN AN

ENVIRONMENT WITH STRONG INSTABILITY SHOULD SUPPORT AN INCREASING

SEVERE STORM THREAT ACROSS NE KS/NW MO THROUGH EARLY TONIGHT.  LARGE

HAIL AND DAMAGING WINDS CAN BE EXPECTED WITH THE STRONGER

STORMS...AND THERE IS SOME POTENTIAL FOR THE FORMATION OF A SMALL

MCS AS A RESULT OF STORM MERGERS LATER THIS EVENING.  VERTICAL SHEAR

APPEARS TO BE SUFFICIENT FOR ORGANIZED MULTICELL CLUSTERS...AS WELL

AS SUPERCELLS...WHICH COULD LOCALLY ENHANCE THE LARGE HAIL THREAT.



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 32020.





...THOMPSON

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