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WWUS20 KWNS 061909

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SPC WW 061909

KSZ000-MOZ000-070300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 56

NWS STORM PREDICTION CENTER NORMAN OK

210 PM CDT TUE APR 6 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       EASTERN KANSAS

       WESTERN AND NORTHERN MISSOURI



EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 210 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 60

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

SOUTHEAST OF WICHITA KANSAS TO 45 MILES NORTHWEST OF KIRKSVILLE

MISSOURI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).



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.



DISCUSSION...SCATTERED THUNDERSTORMS ARE EXPECTED TO FORM THIS

AFTERNOON OVER ALONG SURFACE COLD FRONT OVER EASTERN KS AND

NORTHWEST MO...AND TRACK NORTHEASTWARD ACROSS WATCH AREA.  FAVORABLE

EFFECTIVE SHEAR PROFILES AND SUFFICIENT CAPE WILL PROMOTE A RISK

SUPERCELLS CAPABLE OF LARGE HAIL AND DAMAGING WINDS ALONG THIS ZONE.

 VEERED LOW LEVEL WINDS AND RELATIVELY HIGH LCLS SUGGEST THAT

TORNADO THREAT WILL REMAIN QUITE ISOLATED THROUGH THE AFTERNOON AND

EARLY 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 500. MEAN STORM

MOTION VECTOR 23035.





...HART

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