Severe Severe Storm ● Closed

Severe Thunderstorm Watch issued September 6 at 4:45PM CDT until September 6 at 10:00PM CDT by NWS Des Moines IA, United States of America

Event time: Sep 6, 2026 21:45 UTC Last updated: Sep 15, 2026 United States

Icon = what happened · ring colour = how serious: Extreme Severe Moderate Minor

Loading live data… · Marker positions are approximate; severity is labelled in each popup. Sources: USGS, GDACS, NASA EONET, NOAA/NWS, EMSC.

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
661 IN EFFECT UNTIL 10 PM CDT THIS EVENING FOR THE FOLLOWING
AREAS

IN IOWA THIS WATCH INCLUDES 16 COUNTIES

IN CENTRAL IOWA

BOONE DALLAS POLK

IN SOUTH CENTRAL IOWA

CLARKE DECATUR MADISON
RINGGOLD UNION WARREN

IN SOUTHWEST IOWA

ADAIR ADAMS CASS
TAYLOR

IN WEST CENTRAL IOWA

AUDUBON GREENE GUTHRIE

THIS INCLUDES THE CITIES OF ADAIR, ADEL, ATLANTIC, AUDUBON,
BAYARD, BEDFORD, BOONE, CARLISLE, CASEY, CORNING, CRESTON,
DES MOINES, EARLHAM, EXIRA, FONTANELLE, GREENFIELD,
GUTHRIE CENTER, INDIANOLA, JEFFERSON, LAMONI, LENOX, LEON,
MOUNT AYR, NEW MARKET, NORWALK, OSCEOLA, PANORA, PERRY, STUART,
WAUKEE, AND WINTERSET.

* PRIMARY THREATS INCLUDE...

SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE.
ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE.

PROBABILITY TABLE:
PROB OF 2 OR MORE TORNADOES : <05%
PROB OF 1 OR MORE STRONG /EF2-EF5/ TORNADOES : <02%
PROB OF 10 OR MORE SEVERE WIND EVENTS : 40%
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/ : E 15

Measurements

Coordinates	39.9645, -100.8105
Region	Adair, IA; Adams, IA; Audubon, IA; Boone, IA; Cass, IA; Clarke, IA; Dallas, IA; Decatur, IA; Greene, IA; Guthrie, IA; Madison, IA; Polk, IA; Ringgold, IA;
Location Precision	country
Issuing Authority	United States of America — us-noaa-nws-en
Cap Urgency	Future
Cap Certainty	Possible
Cap Expires	2026-09-06T22:00:00-05:00

Official source

Warnings courtesy of the issuing national meteorological service, via the WMO Alert Hub.

This is an official warning issued by the authority named above. Follow its instructions and those of your local emergency services.

Severity as published by WMO Alert Hub (national weather services).

View original report

Also reported by: WMO WMO

This event as JSON · API and licence

Source updated 43 days ago (Sep 6, 2026 21:46 UTC) · we last heard from WMO Alert Hub (national weather services) 15 seconds ago

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About this location

The agency did not publish coordinates for this warning. The pin is the centre of the country, not the location of the event — read the area name, not the map, for where it applies.

Area as the agency stated it: Adair, IA; Adams, IA; Audubon, IA; Boone, IA; Cass, IA; Clarke, IA; Dallas, IA; Decatur, IA; Greene, IA; Guthrie, IA; Madison, IA; Polk, IA; Ringgold, IA;

Official authorities in United States

If you are there, these are the bodies whose instructions apply. This site is not an emergency service and does not issue warnings.

More for United States →

Earlier severe storm events in United States

Severe and extreme events of the same kind, before this one. Listed for scale, not because they are connected to it.

Severe Thunderstorm Warning — Gogebic, MI; Ontonagon, MI Severe Severe Storm United States closed via NWS Aug 7, 2026 Severe Thunderstorm Warning — Fayette, IN; Franklin, IN; Union, IN Severe Severe Storm United States closed via NWS Aug 7, 2026 Special Marine Warning — Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border; Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the Severe Severe Storm United States closed via NWS Aug 7, 2026 Severe Thunderstorm Warning — Athens, OH; Gallia, OH; Jackson, OH; Meigs, OH; Vinton, OH Severe Severe Storm United States closed via NWS Aug 7, 2026

Nearby & related events

Gale Warning issued October 19 at 5:53PM AKDT until October 20 at 10:00PM AKDT by NWS Juneau AK, United States of America Moderate Severe Storm United States active via WMO 2 min ago Gale Warning issued October 19 at 5:53PM AKDT until October 20 at 1:00PM AKDT by NWS Juneau AK, United States of America Moderate Severe Storm United States active via WMO 2 min ago Gale Warning issued October 19 at 5:53PM AKDT until October 20 at 7:00PM AKDT by NWS Juneau AK, United States of America Moderate Severe Storm United States active via WMO 2 min ago Rip Current Statement issued October 19 at 9:47PM AST until October 21 at 6:00PM AST by NWS San Juan PR, United States of America Moderate Extreme Weather United States active via WMO 8 min ago Wind Advisory issued October 19 at 5:40PM AKDT until October 21 at 4:00AM AKDT by NWS Juneau AK, United States of America Moderate Severe Storm United States active via WMO 15 min ago

Disclaimer: figures are automatic feeds from the named agencies and may be revised. Do not use this page for life-safety decisions — follow official local emergency services.