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000 

WWUS20 KWNS 030503

SEL7

SPC WW 030503

IAZ000-KSZ000-MOZ000-NEZ000-031200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 107

NWS STORM PREDICTION CENTER NORMAN OK

1205 AM CDT TUE APR 3 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       WESTERN AND SOUTHERN IOWA

       NORTHEAST KANSAS

       NORTHWEST AND NORTH CENTRAL MISSOURI

       SOUTHEAST NEBRASKA



EFFECTIVE THIS TUESDAY MORNING FROM 1205 AM UNTIL 700 AM 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 95

STATUTE MILES EAST AND WEST OF A LINE FROM 50 MILES WEST

NORTHWEST OF KNOXVILLE IOWA TO 25 MILES WEST SOUTHWEST OF SAINT

JOSEPH MISSOURI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).



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 104...WW 105...WW 106...



DISCUSSION...ERN NEB MCS EXPECTED TO CONTINUE EWD AT ABOUT 40

KTS...WITH ADDITIONAL STORM DEVELOPMENT EXPECTED WITH TIME TOWARD SE

AS SYSTEM ENCOUNTERS INCREASINGLY MOIST SSWLY LLJ.  POTENTIAL WILL

EXIST FOR HIGH WIND...LARGE HAIL AND...MAINLY LATER IN THE

PERIOD...POSSIBLY AN ISOLATED TORNADO.



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 28035.





...CORFIDI

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