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URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 43

NWS STORM PREDICTION CENTER NORMAN OK

1025 AM CDT FRI APR 2 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTH CENTRAL IOWA

       NORTH CENTRAL MISSOURI



EFFECTIVE THIS FRIDAY MORNING AND AFTERNOON FROM 1025 AM UNTIL

300 PM CDT.



HAIL TO 1 INCH 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 45

STATUTE MILES EAST AND WEST OF A LINE FROM 60 MILES NORTH

NORTHWEST OF KIRKSVILLE MISSOURI TO 60 MILES SOUTH SOUTHEAST OF

CHILLICOTHE 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.



DISCUSSION...LINE OF INTENSE THUNDERSTORMS OVER NORTHWEST MO WILL

PERSIST FOR ANOTHER FEW HOURS WITH A CONTINUED RISK OF DAMAGING

WINDS.  INSTABILITY PARAMETERS ARE QUITE WEAK AHEAD OF THE

LINE...BUT VERY STRONG LARGE SCALE FORCING ASSOCIATED WITH MESOSCALE

CONVECTIVE COMPLEX MAY MAINTAIN INTENSITY SOME DISTANCE EAST OF

INSTABILITY AXIS.



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

TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70 KNOTS.

A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM MOTION

VECTOR 25040.





...HART

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