Iowa Severe Thunderstorm Watch | Effective 05/15/2026 21:09

Headline: 
Severe Thunderstorm Watch issued May 15 at 11:09PM CDT until May 16 at 1:00AM CDT by NWS Des Moines IA
Event: 
Severe Thunderstorm Watch
Urgency: 
Future
Effective: 
May 15, 2026 - 9:09pm
Expires: 
May 15, 2026 - 11:00pm
Description: 
SEVERE THUNDERSTORM WATCH 205 REMAINS VALID UNTIL 1 AM CDT SATURDAY FOR THE FOLLOWING AREAS IN IOWA THIS WATCH INCLUDES 36 COUNTIES IN CENTRAL IOWA BOONE DALLAS GRUNDY HAMILTON HARDIN JASPER MARSHALL POLK POWESHIEK STORY TAMA WEBSTER IN NORTH CENTRAL IOWA BUTLER FRANKLIN WRIGHT IN NORTHEAST IOWA BLACK HAWK BREMER IN SOUTH CENTRAL IOWA CLARKE LUCAS MADISON MAHASKA MARION MONROE UNION WARREN IN SOUTHEAST IOWA WAPELLO IN SOUTHWEST IOWA ADAIR ADAMS CASS TAYLOR IN WEST CENTRAL IOWA AUDUBON CALHOUN CARROLL CRAWFORD GREENE GUTHRIE THIS INCLUDES THE CITIES OF ACKLEY, ADAIR, ADEL, ALBIA, ALLISON, AMES, APLINGTON, ATLANTIC, AUDUBON, BAYARD, BEDFORD, BELMOND, BOONE, CARLISLE, CARROLL, CASEY, CEDAR FALLS, CHARITON, CLARION, CLARKSVILLE, CONRAD, CORNING, CRESTON, DENISON, DES MOINES, DIKE, DUMONT, DYSART, EAGLE GROVE, EARLHAM, ELDORA, EXIRA, FONTANELLE, FORT DODGE, GLADBROOK, GREENE, GREENFIELD, GRINNELL, GRUNDY CENTER, GUTHRIE CENTER, HAMPTON, INDIANOLA, IOWA FALLS, JEFFERSON, KNOXVILLE, LAKE CITY, LENOX, MANSON, MARSHALLTOWN, NEW MARKET, NEWTON, NORWALK, OSCEOLA, OSKALOOSA, OTTUMWA, PANORA, PARKERSBURG, PELLA, PERRY, POMEROY, REINBECK, ROCKWELL CITY, SHELL ROCK, STUART, TAMA, TOLEDO, TRAER, WATERLOO, WAUKEE, WAVERLY, WEBSTER CITY, WELLSBURG, AND WINTERSET.
Area Description: 
Adair, IA; Adams, IA; Audubon, IA; Black Hawk, IA; Boone, IA; Bremer, IA; Butler, IA; Calhoun, IA; Carroll, IA; Cass, IA; Clarke, IA; Crawford, IA; Dallas, IA; Franklin, IA; Greene, IA; Grundy, IA; Guthrie, IA; Hamilton, IA; Hardin, IA; Jasper, IA; Lucas, IA; Madison, IA; Mahaska, IA; Marion, IA; Marshall, IA; Monroe, IA; Polk, IA; Poweshiek, IA; Story, IA; Tama, IA; Taylor, IA; Union, IA; Wapello, IA; Warren, IA; Webster, IA; Wright, IA
Forcast Office: 
NWS Des Moines IA
Sender: 
w-nws.webmaster@noaa.gov