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109 

WWUS20 KWNS 032320

SEL3

SPC WW 032320

KSZ000-MOZ000-040500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 83

NWS STORM PREDICTION CENTER NORMAN OK

620 PM CDT SUN APR 3 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       EASTERN KANSAS

       NORTHERN MISSOURI



EFFECTIVE THIS SUNDAY NIGHT FROM 620 PM UNTIL MIDNIGHT CDT.



HAIL TO 3 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 40 MILES SOUTHWEST

OF MANHATTAN KANSAS TO 10 MILES EAST SOUTHEAST OF KIRKSVILLE

MISSOURI.  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 82...



DISCUSSION...THUNDERSTORMS HAVE BEGUN TO RAPIDLY INTENSIFY ALONG AND

NORTH OF A COLD FRONT OVER NORTHEAST KS.  THESE STORMS ARE EXPECTED

TO BECOME MORE NUMEROUS AND SPREAD EAST-SOUTHEASTWARD ACROSS THE

WATCH AREA THIS EVENING.  VERY STEEP MID LEVEL LAPSE RATES AND

STRONG VERTICAL SHEAR WILL PROMOTE SUPERCELL STORMS...WITH VERY

LARGE HAIL BEING THE MAIN THREAT.  DAMAGING WINDS MAY ALSO BECOME

MORE OF A THREAT THIS EVENING AS THE ACTIVITY BEGINS TO SURGE

SOUTHEASTWARD.



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

TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

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

MOTION VECTOR 25040.





...HART

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