Des Moines, Iowa

Regional Weather Alerts


     

Alert: Flood Watch
Area(s): Pottawattamie; Mills; Montgomery; Fremont; Page; Butler; Saunders; Douglas; Sarpy; Seward; Lancaster; Cass; Otoe; Saline; Jefferson; Gage; Johnson; Nemaha; Pawnee; Richardson
Effective: 2026-05-16 @ 8:43 pm -> 2026-05-17 @ 5:00 am
Onset: 2026-05-16 @ 8:43 pm -> 2026-05-17 @ 5:00 am
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Omaha/Valley NE on 2026-05-16 @ 8:43 pm
Headline: Flood Watch issued May 16 at 8:43PM CDT until May 17 at 5:00AM CDT by NWS Omaha/Valley NE
Description: * WHAT...Flash flooding caused by excessive rainfall is possible.

* WHERE...Portions of southwest Iowa, including the following
counties, Fremont, Mills, Montgomery, Page and Pottawattamie and
Nebraska, including the following counties, Butler, Cass, Douglas,
Gage, Jefferson, Johnson, Lancaster, Nemaha, Otoe, Pawnee,
Richardson, Saline, Sarpy, Saunders and Seward.

* WHEN...Until 5 AM CDT Sunday.

* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.

* ADDITIONAL DETAILS...
- Ongoing storm activity will combine with incoming storms from the
west, with increasing flood chances through the overnight hours.
Short-term models indicate that 3-5 inches will be possible, with
rain rates of 1-2 inches or more in one hour already observed.
- http://www.weather.gov/safety/flood

Alert: Tornado Watch
Area(s): Appanoose, IA; Decatur, IA; Ringgold, IA; Taylor, IA; Wayne, IA
Effective: 2026-05-16 @ 8:17 pm -> 2026-05-16 @ 11:00 pm
Onset: 2026-05-16 @ 8:17 pm -> 2026-05-16 @ 11:00 pm
Severity: Extreme
Certainty: Possible
Urgency: Future
Issued By: NWS Des Moines IA on 2026-05-16 @ 8:17 pm
Headline: Tornado Watch issued May 16 at 8:17PM CDT until May 16 at 11:00PM CDT by NWS Des Moines IA
Description: TORNADO WATCH 210 REMAINS VALID UNTIL 11 PM CDT THIS EVENING FOR
THE FOLLOWING AREAS

IN IOWA THIS WATCH INCLUDES 5 COUNTIES

IN SOUTH CENTRAL IOWA

APPANOOSE DECATUR RINGGOLD
WAYNE

IN SOUTHWEST IOWA

TAYLOR

THIS INCLUDES THE CITIES OF ALLERTON, BEDFORD, CENTERVILLE,
CORYDON, HUMESTON, LAMONI, LENOX, LEON, MOUNT AYR, NEW MARKET,
AND SEYMOUR.

* PRIMARY THREATS INCLUDE...

A FEW TORNADOES LIKELY WITH A COUPLE INTENSE TORNADOES POSSIBLE.
SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2.5
INCHES IN DIAMETER LIKELY.
SCATTERED DAMAGING WIND GUSTS TO 70 MPH LIKELY.

Alert: Flash Flood Warning
Area(s): Montgomery, IA
Effective: 2026-05-16 @ 6:49 pm -> 2026-05-16 @ 10:00 pm
Onset: 2026-05-16 @ 6:49 pm -> 2026-05-16 @ 10:00 pm
Severity: Severe
Certainty: Likely
Urgency: Immediate
Issued By: NWS Omaha/Valley NE on 2026-05-16 @ 6:49 pm
Headline: Flash Flood Warning issued May 16 at 6:49PM CDT until May 16 at 10:00PM CDT by NWS Omaha/Valley NE
Description: FFWOAX

The National Weather Service in Omaha/Valley has issued a

* Flash Flood Warning for...
Southeastern Montgomery County in southwestern Iowa...

* Until 1000 PM CDT.

* At 649 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 4 inches of rain
have fallen. Additional rainfall amounts up to 1 inch are possible
in the warned area. Flash flooding is ongoing or expected to begin
shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar indicated.

IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.

* Some locations that will experience flash flooding include...
Villisca, Stanton, Viking Lake State Park and Hacklebarney Woods
County Park.

Alert: Tornado Watch
Area(s): Fremont, IA; Mills, IA; Montgomery, IA; Page, IA
Effective: 2026-05-16 @ 5:08 pm -> 2026-05-16 @ 11:00 pm
Onset: 2026-05-16 @ 5:08 pm -> 2026-05-16 @ 11:00 pm
Severity: Extreme
Certainty: Possible
Urgency: Future
Issued By: NWS Omaha/Valley NE on 2026-05-16 @ 5:08 pm
Headline: Tornado Watch issued May 16 at 5:08PM CDT until May 16 at 11:00PM CDT by NWS Omaha/Valley NE
Description: TORNADO WATCH 210 REMAINS VALID UNTIL 11 PM CDT THIS EVENING FOR
THE FOLLOWING AREAS

IN IOWA THIS WATCH INCLUDES 4 COUNTIES

IN SOUTHWEST IOWA

FREMONT MILLS MONTGOMERY
PAGE

THIS INCLUDES THE CITIES OF CLARINDA, FARRAGUT, GLENWOOD,
HAMBURG, RED OAK, SHENANDOAH, SIDNEY, AND TABOR.

Alert: Severe Thunderstorm Watch
Area(s): Pottawattamie, IA; Boone, NE; Butler, NE; Cass, NE; Colfax, NE; Dodge, NE; Douglas, NE; Gage, NE; Jefferson, NE; Johnson, NE; Lancaster, NE; Nemaha, NE; Otoe, NE; Pawnee, NE; Platte, NE; Richardson, NE; Saline, NE; Sarpy, NE; Saunders, NE; Seward, NE; Washington, NE
Effective: 2026-05-16 @ 5:08 pm -> 2026-05-17 @ 1:00 am
Onset: 2026-05-16 @ 5:10 pm -> 2026-05-17 @ 1:00 am
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Omaha/Valley NE on 2026-05-16 @ 5:08 pm
Headline: Severe Thunderstorm Watch issued May 16 at 5:08PM CDT until May 17 at 1:00AM CDT by NWS Omaha/Valley NE
Description: THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
211 IN EFFECT UNTIL 1 AM CDT SUNDAY FOR THE FOLLOWING AREAS

IN IOWA THIS WATCH INCLUDES 1 COUNTY

IN SOUTHWEST IOWA

POTTAWATTAMIE

IN NEBRASKA THIS WATCH INCLUDES 20 COUNTIES

IN EAST CENTRAL NEBRASKA

BUTLER DODGE DOUGLAS
SARPY SAUNDERS WASHINGTON

IN NORTHEAST NEBRASKA

BOONE COLFAX PLATTE

IN SOUTHEAST NEBRASKA

CASS GAGE JEFFERSON
JOHNSON LANCASTER NEMAHA
OTOE PAWNEE RICHARDSON
SALINE SEWARD

THIS INCLUDES THE CITIES OF ALBION, ASHLAND, AUBURN, BEATRICE,
BELLEVUE, BLAIR, COLUMBUS, COUNCIL BLUFFS, CRETE, DAVID CITY,
FAIRBURY, FALLS CITY, FREMONT, LA VISTA, LINCOLN, MILFORD,
NEBRASKA CITY, OMAHA, PAPILLION, PAWNEE CITY, PLATTSMOUTH,
SCHUYLER, SEWARD, ST. EDWARD, STERLING, TABLE ROCK, TECUMSEH,
WAHOO, WILBER, AND YUTAN.