Johnston, IA Alerts
Severe Thunderstorm Watch issued June 23 at 4:39PM CDT until June 23 at 10:00PM CDT by NWS Des Moines IA
Headline
Severe Thunderstorm Watch issued June 23 at 4:39PM CDT until June 23 at 10:00PM CDT by NWS Des Moines IA
Description
THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
456 IN EFFECT UNTIL 10 PM CDT THIS EVENING FOR THE FOLLOWING
AREAS
IN IOWA THIS WATCH INCLUDES 27 COUNTIES
IN CENTRAL IOWA
BOONE DALLAS GRUNDY
HARDIN JASPER MARSHALL
POLK POWESHIEK STORY
TAMA
IN NORTH CENTRAL IOWA
BUTLER
IN NORTHEAST IOWA
BLACK HAWK BREMER
IN SOUTH CENTRAL IOWA
CLARKE DECATUR LUCAS
MADISON MAHASKA MARION
RINGGOLD UNION WARREN
IN SOUTHWEST IOWA
ADAIR ADAMS CASS
TAYLOR
IN WEST CENTRAL IOWA
GUTHRIE
THIS INCLUDES THE CITIES OF ACKLEY, ADAIR, ADEL, ALLISON, AMES,
APLINGTON, ATLANTIC, BAYARD, BEDFORD, BOONE, CARLISLE, CASEY,
CEDAR FALLS, CHARITON, CLARKSVILLE, CONRAD, CORNING, CRESTON,
DES MOINES, DIKE, DUMONT, DYSART, EARLHAM, ELDORA, FONTANELLE,
GLADBROOK, GREENE, GREENFIELD, GRINNELL, GRUNDY CENTER,
GUTHRIE CENTER, INDIANOLA, IOWA FALLS, KNOXVILLE, LAMONI, LENOX,
LEON, MARSHALLTOWN, MOUNT AYR, NEW MARKET, NEWTON, NORWALK,
OSCEOLA, OSKALOOSA, PANORA, PARKERSBURG, PELLA, PERRY, REINBECK,
SHELL ROCK, STUART, TAMA, TOLEDO, TRAER, WATERLOO, WAUKEE,
WAVERLY, WELLSBURG, AND WINTERSET.
* PRIMARY THREATS INCLUDE...
SCATTERED DAMAGING WIND GUSTS TO 70 MPH LIKELY.
ISOLATED LARGE HAIL EVENTS TO 1 INCH IN DIAMETER POSSIBLE.
PROBABILITY TABLE:
PROB OF 2 OR MORE TORNADOES : 10%
PROB OF 1 OR MORE STRONG /EF2-EF5/ TORNADOES : <02%
PROB OF 10 OR MORE SEVERE WIND EVENTS : 60%
PROB OF 1 OR MORE WIND EVENTS >= 75 MPH : 20%
PROB OF 10 OR MORE SEVERE HAIL EVENTS : 30%
PROB OF 1 OR MORE HAIL EVENTS >= 2 INCHES : 20%
PROB OF 6 OR MORE COMBINED SEVERE HAIL/WIND EVENTS : 80%
MEAN STORM MOTION /MPH/ : NE 30
Instructions
Additional Details
| Type | Alert |
| Phenomena | Severe Thunderstorm |
| Severity | Watch |
| Event Code | SVA |
| Area | Adair, IA; Adams, IA; Black Hawk, IA; Boone, IA; Bremer, IA; Butler, IA; Cass, IA; Clarke, IA; Dallas, IA; Decatur, IA; Grundy, IA; Guthrie, IA; Hardin, IA; Jasper, IA; Lucas, IA; Madison, IA; Mahaska, IA; Marion, IA; Marshall, IA; Polk, IA; Poweshiek, IA; Ringgold, IA; Story, IA; Tama, IA; Taylor, IA; Union, IA; Warren, IA |
| Sent | Monday, June 23, 2025 4:39 PM CDT |
| Expires | Monday, June 23, 2025 10:00 PM CDT |
| Sender | NWS Des Moines IA |
| Id | urn:oid:2.49.0.1.840.0.3143cab4b46df3641cbc21da16bbfb021cfeed25.001.1 |