⚠️ Severe Thunderstorm Watch – Adair, IA; Adams, IA; Audubon, IA; Calhoun, IA; Carroll, IA; Cass, IA; Crawford, IA; Greene, IA; Guthrie, IA; Sac, IA; Union, IA – Thursday, August 13, 2026

Severe Thunderstorm Watch issued August 13 at 1:34AM CDT until August 13 at 8:00AM CDT by NWS Des Moines IA

Details

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
580 IN EFFECT UNTIL 8 AM CDT THIS MORNING FOR THE FOLLOWING AREAS

IN IOWA THIS WATCH INCLUDES 11 COUNTIES

IN SOUTH CENTRAL IOWA

UNION

IN SOUTHWEST IOWA

ADAIR ADAMS CASS

IN WEST CENTRAL IOWA

AUDUBON CALHOUN CARROLL
CRAWFORD GREENE GUTHRIE
SAC

THIS INCLUDES THE CITIES OF ADAIR, ATLANTIC, AUDUBON, BAYARD,
CARROLL, CASEY, CORNING, CRESTON, DENISON, EARLY, EXIRA,
FONTANELLE, GREENFIELD, GUTHRIE CENTER, JEFFERSON, LAKE CITY,
LAKE VIEW, MANSON, ODEBOLT, PANORA, POMEROY, ROCKWELL CITY,
SAC CITY, SCHALLER, STUART, AND WALL LAKE.

* PRIMARY THREATS INCLUDE…

SCATTERED DAMAGING WINDS AND ISOLATED SIGNIFICANT GUSTS TO 85
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 : 70%
PROB OF 1 OR MORE WIND EVENTS >= 75 MPH : 60%
PROB OF 10 OR MORE SEVERE HAIL EVENTS : 20%
PROB OF 1 OR MORE HAIL EVENTS >= 2 INCHES : <05%
PROB OF 6 OR MORE COMBINED SEVERE HAIL/WIND EVENTS : 90%
MEAN STORM MOTION /MPH/ : E 45

This alert was automatically posted by SkyGuard, MWSC’s severe weather alerting system. Source: National Weather Service.