Severe Thunderstorm Watch for Boone, IA; Clarke, IA; Dallas, IA +17 more

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THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 581 IN EFFECT UNTIL 11 AM CDT THIS MORNING FOR THE FOLLOWING AREAS IN IOWA THIS WATCH INCLUDES 20 COUNTIES IN CENTRAL IOWA BOONE DALLAS GRUNDY HAMILTON HARDIN JASPER MARSHALL POLK POWESHIEK STORY TAMA WEBSTER IN SOUTH CENTRAL IOWA CLARKE LUCAS MADISON MAHASKA MARION MONROE WARREN IN SOUTHEAST IOWA WAPELLO THIS INCLUDES THE CITIES OF ACKLEY, ADEL, ALBIA, AMES, BOONE, CARLISLE, CHARITON, CONRAD, DES MOINES, DIKE, DYSART, EARLHAM, ELDORA, FORT DODGE, GLADBROOK, GRINNELL, GRUNDY CENTER, INDIANOLA, IOWA FALLS, KNOXVILLE, MARSHALLTOWN, NEWTON, NORWALK, OSCEOLA, OSKALOOSA, OTTUMWA, PELLA, PERRY, REINBECK, TAMA, TOLEDO, TRAER, WAUKEE, WEBSTER CITY, WELLSBURG, AND WINTERSET. * PRIMARY THREATS INCLUDE... SCATTERED DAMAGING WINDS LIKELY WITH ISOLATED SIGNIFICANT GUSTS TO 75 MPH POSSIBLE. ISOLATED LARGE HAIL EVENTS TO 1 INCH IN DIAMETER POSSIBLE. A TORNADO OR TWO POSSIBLE. PROBABILITY TABLE: PROB OF 2 OR MORE TORNADOES : 20% PROB OF 1 OR MORE STRONG /EF2-EF5/ TORNADOES : 05% PROB OF 10 OR MORE SEVERE WIND EVENTS : 60% PROB OF 1 OR MORE WIND EVENTS >= 75 MPH : 30% PROB OF 10 OR MORE SEVERE HAIL EVENTS : 20% PROB OF 1 OR MORE HAIL EVENTS >= 2 INCHES : <05% PROB OF 6 OR MORE COMBINED SEVERE HAIL/WIND EVENTS : 80% MEAN STORM MOTION /MPH/ : E 50