Iowa Severe Severe Thunderstorm Watch | Effective 07/02/2026 10:45

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 437 IN EFFECT UNTIL 7 PM CDT THIS EVENING FOR THE FOLLOWING AREAS IN IOWA THIS WATCH INCLUDES 8 COUNTIES IN CENTRAL IOWA GRUNDY HARDIN MARSHALL TAMA IN NORTH CENTRAL IOWA BUTLER FRANKLIN IN NORTHEAST IOWA BLACK HAWK BREMER THIS INCLUDES THE CITIES OF ACKLEY, ALLISON, APLINGTON, CEDAR FALLS, CLARKSVILLE, CONRAD, DIKE, DUMONT, DYSART, ELDORA, GLADBROOK, GREENE, GRUNDY CENTER, HAMPTON, IOWA FALLS, MARSHALLTOWN, PARKERSBURG, REINBECK, SHELL ROCK, TAMA, TOLEDO, TRAER, WATERLOO, WAVERLY, AND WELLSBURG. * 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. PROBABILITY TABLE: PROB OF 2 OR MORE TORNADOES : 20% PROB OF 1 OR MORE STRONG /EF2-EF5/ TORNADOES : = 75 MPH : 20% PROB OF 10 OR MORE SEVERE HAIL EVENTS : 40% PROB OF 1 OR MORE HAIL EVENTS >= 2 INCHES : 30% PROB OF 6 OR MORE COMBINED SEVERE HAIL/WIND EVENTS : 90% MEAN STORM MOTION /MPH/ : E 30