Iowa Severe Thunderstorm Watch | Effective 04/23/2026 16:59

SEVERE THUNDERSTORM WATCH 138 REMAINS VALID UNTIL MIDNIGHT CDT TONIGHT FOR THE FOLLOWING AREAS IN IOWA THIS WATCH INCLUDES 32 COUNTIES IN CENTRAL IOWA BOONE DALLAS GRUNDY HAMILTON HARDIN JASPER MARSHALL POLK POWESHIEK STORY TAMA IN NORTH CENTRAL IOWA BUTLER CERRO GORDO FRANKLIN WORTH IN NORTHEAST IOWA BLACK HAWK BREMER IN SOUTH CENTRAL IOWA APPANOOSE CLARKE DECATUR LUCAS MADISON MAHASKA MARION MONROE RINGGOLD UNION WARREN WAYNE IN SOUTHWEST IOWA ADAIR ADAMS TAYLOR THIS INCLUDES THE CITIES OF ACKLEY, ADAIR, ADEL, ALBIA, ALLERTON, ALLISON, AMES, APLINGTON, BEDFORD, BOONE, CARLISLE, CEDAR FALLS, CENTERVILLE, CHARITON, CLARKSVILLE, CLEAR LAKE, CONRAD, CORNING, CORYDON, CRESTON, DES MOINES, DIKE, DUMONT, DYSART, EARLHAM, ELDORA, FONTANELLE, GLADBROOK, GREENE, GREENFIELD, GRINNELL, GRUNDY CENTER, HAMPTON, HUMESTON, INDIANOLA, IOWA FALLS, KNOXVILLE, LAMONI, LENOX, LEON, MANLY, MARSHALLTOWN, MASON CITY, MOUNT AYR, NEW MARKET, NEWTON, NORTHWOOD, NORWALK, OSCEOLA, OSKALOOSA, PARKERSBURG, PELLA, PERRY, REINBECK, SEYMOUR, SHELL ROCK, STUART, TAMA, TOLEDO, TRAER, WATERLOO, WAUKEE, WAVERLY, WEBSTER CITY, WELLSBURG, AND WINTERSET. * PRIMARY THREATS INCLUDE... SCATTERED DAMAGING WIND GUSTS TO 70 MPH LIKELY. SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE. A TORNADO OR TWO POSSIBLE.