Tornado Watch issued July 20 at 3:03PM CDT until July 20 at 10:00PM CDT by NWS Des Moines IA
THE NATIONAL WEATHER SERVICE HAS ISSUED TORNADO WATCH 500 IN
EFFECT UNTIL 10 PM CDT THIS EVENING FOR THE FOLLOWING AREAS
IN IOWA THIS WATCH INCLUDES 29 COUNTIES
IN CENTRAL IOWA
BOONE DALLAS GRUNDY
HAMILTON HARDIN JASPER
MARSHALL POLK POWESHIEK
STORY TAMA WEBSTER
IN NORTH CENTRAL IOWA
BUTLER CERRO GORDO FRANKLIN
HANCOCK HUMBOLDT WINNEBAGO
WORTH WRIGHT
IN NORTHEAST IOWA
BLACK HAWK BREMER
IN SOUTH CENTRAL IOWA
MADISON MAHASKA MARION
WARREN
IN SOUTHWEST IOWA
ADAIR
IN WEST CENTRAL IOWA
GREENE GUTHRIE
THIS INCLUDES THE CITIES OF ACKLEY, ADAIR, ADEL, ALLISON, AMES,
APLINGTON, BAYARD, BELMOND, BOONE, BRITT, CARLISLE, CASEY,
CEDAR FALLS, CLARION, CLARKSVILLE, CLEAR LAKE, CONRAD,
DES MOINES, DIKE, DUMONT, DYSART, EAGLE GROVE, EARLHAM, ELDORA,
FONTANELLE, FOREST CITY, FORT DODGE, GARNER, GLADBROOK, GREENE,
GREENFIELD, GRINNELL, GRUNDY CENTER, GUTHRIE CENTER, HAMPTON,
HUMBOLDT, INDIANOLA, IOWA FALLS, JEFFERSON, KANAWHA, KNOXVILLE,
LAKE MILLS, MANLY, MARSHALLTOWN, MASON CITY, NEWTON, NORTHWOOD,
NORWALK, OSKALOOSA, PANORA, PARKERSBURG, PELLA, PERRY, REINBECK,
SHELL ROCK, STUART, TAMA, TOLEDO, TRAER, WATERLOO, WAUKEE,
WAVERLY, WEBSTER CITY, WELLSBURG, AND WINTERSET.
* PRIMARY THREATS INCLUDE...
A FEW TORNADOES LIKELY WITH A COUPLE INTENSE TORNADOES POSSIBLE.
SCATTERED DAMAGING WINDS LIKELY WITH ISOLATED SIGNIFICANT GUSTS
TO 75 MPH POSSIBLE.
SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2.5
INCHES IN DIAMETER POSSIBLE.
PROBABILITY TABLE:
PROB OF 2 OR MORE TORNADOES : 70%
PROB OF 1 OR MORE STRONG /EF2-EF5/ TORNADOES : 50%
PROB OF 10 OR MORE SEVERE WIND EVENTS : 60%
PROB OF 1 OR MORE WIND EVENTS >= 75 MPH : 50%
PROB OF 10 OR MORE SEVERE HAIL EVENTS : 40%
PROB OF 1 OR MORE HAIL EVENTS >= 2 INCHES : 40%
PROB OF 6 OR MORE COMBINED SEVERE HAIL/WIND EVENTS : 90%
MEAN STORM MOTION /MPH/ : SE 35