STORM PREDICTION CENTER NORMAN OK 1250 PM CDT SUN APR 26 2009 THE NWS
STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF
PARTS OF WESTERN AND CENTRAL IOWA PARTS OF NORTHWEST MISSOURI
PARTS OF SOUTHEAST NEBRASKA EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING
FROM 1250 PM UNTIL 800 PM CDT. TORNADOES...HAIL TO 3 INCHES IN
DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE
POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS APPROXIMATELY
ALONG AND 80 STATUTE MILES EAST AND WEST OF A LINE FROM 15 MILES WEST OF
FALLS CITY NEBRASKA TO 20 MILES NORTHEAST OF FORT DODGE IOWA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
(WOUS64 KWNS WOU1). REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE
FAVORABLE FOR TORNADOES AND 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.
OTHER WATCH INFORMATION...CONTINUE...WW 189...WW 190...
DISCUSSION...WARM FRONT MOVING NWD THRU WRN IA/SERN NE AHEAD OF SURFACE WV
NEAR CNK. THIS PLACES WATCH AREA IN FAVORABLE ENVIRONMENT FOR DEVELOPMENT
OF TORNADIC SUPERCELLS AS SHEAR AND INSTABILITY ARE QUITE STRONG IN WARM
SECTOR. AVIATION...TORNADOES AND 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 24035. IOWA COUNTIES INCLUDED ARE
ADAIR ADAMS AUDUBON
BOONE BUTLER CALHOUN
CARROLL CASS CLARKE
CRAWFORD DALLAS DECATUR
FRANKLIN FREMONT GREENE
GRUNDY GUTHRIE HAMILTON
HARDIN HARRISON HUMBOLDT
JASPER MADISON MARSHALL
MILLS MONTGOMERY PAGE
POCAHONTAS POLK POTTAWATTAMIE
RINGGOLD SAC SHELBY
STORY TAYLOR UNION
WARREN WEBSTER WRIGHT
MISSOURI COUNTIES INCLUDED ARE
ANDREW ATCHISON GENTRY
HARRISON HOLT NODAWAY
WORTH
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