Active Weather Alerts
Severe Thunderstorm Warning
Issued: 2:27 AM May. 18, 2026 – National Weather Service
The National Weather Service in Des Moines has issued a * Severe Thunderstorm Warning for... Greene County in west central Iowa... Southern Webster County in central Iowa... Guthrie County in west central Iowa... Audubon County in west central Iowa... Southeastern Sac County in west central Iowa... Southern Calhoun County in west central Iowa... Eastern Crawford County in west central Iowa... Southwestern Hamilton County in central Iowa... Boone County in central Iowa... Carroll County in west central Iowa... Northwestern Dallas County in central Iowa... * Until 1045 PM CDT. * At 926 PM CDT, severe thunderstorms were located along a line extending from Churdan to 4 miles south of Ralston to 7 miles east of Irwin to near Marne, moving southeast at 35 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Boone, Carroll, Perry, Jefferson, Audubon, Guthrie Center, Ogden, Lake City, Manning, Coon Rapids, Glidden, Panora, Gowrie, Lake Panorama, Boone Speedway, Exira, Dayton, Grand Junction, Adair, and Manilla. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain alert for a possible tornado! Tornadoes can develop quickly from severe thunderstorms. If you spot a tornado go at once into the basement or small central room in a sturdy structure. For your protection move to an interior room on the lowest floor of a building. Intense thunderstorm lines can produce brief tornadoes and widespread significant wind damage. Although a tornado is not immediately likely, it is best to move to an interior room on the lowest floor of a building. These storms may cause serious injury and significant property damage. A Tornado Watch remains in effect until 300 AM CDT for central, southwestern and west central Iowa. && TORNADO...POSSIBLE; HAIL THREAT...RADAR INDICATED; MAX HAIL SIZE...0.75 IN; WIND THREAT...RADAR INDICATED; MAX WIND GUST...60 MPH
Tornado Warning
Issued: 2:12 AM May. 18, 2026 – National Weather Service
The National Weather Service in Des Moines has issued a * Tornado Warning for... Webster County in central Iowa... Southeastern Calhoun County in west central Iowa... Western Hamilton County in central Iowa... * Until 1000 PM CDT. * At 912 PM CDT, a severe thunderstorm capable of producing a tornado was located over Rockwell City Municipal Airport, or over Rockwell City, moving east at 45 mph. HAZARD...Tornado. SOURCE...Radar indicated rotation. IMPACT...Flying debris will be dangerous to those caught without shelter. Mobile homes will be damaged or destroyed. Damage to roofs, windows, and vehicles will occur. Tree damage is likely. * This dangerous storm will be near... Rinard around 915 PM CDT. Somers and Knierim around 920 PM CDT. Moorland around 925 PM CDT. Lizard Creek State Recreation Area around 930 PM CDT. Fort Dodge around 935 PM CDT. Coalville and Otho around 940 PM CDT. Woodman Hollow State Park around 945 PM CDT. Duncombe and Brushy Creek St Recreation Area around 950 PM CDT. Other locations impacted by this tornadic thunderstorm include Callender, Moorland, Duncombe, Woodman Hollow State Park, Somers, Knierim, Stratford, Rockwell City Municipal Airport, Dolliver Memorial State Park, and Otho. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW! Move to a basement or an interior room on the lowest floor of a sturdy building. Avoid windows. If you are outdoors, in a mobile home, or in a vehicle, move to the closest substantial shelter and protect yourself from flying debris. && TORNADO...RADAR INDICATED; MAX HAIL SIZE...<.75 IN
Tornado Warning
Issued: 2:06 AM May. 18, 2026 – National Weather Service
The National Weather Service in Des Moines has issued a * Tornado Warning for... Northern Webster County in central Iowa... Southeastern Pocahontas County in northwestern Iowa... Western Wright County in north central Iowa... Northeastern Calhoun County in west central Iowa... Humboldt County in north central Iowa... Northwestern Hamilton County in central Iowa... * Until 945 PM CDT. * At 905 PM CDT, a confirmed tornado was located over Pomeroy, or 10 miles north of Rockwell City, moving east at 60 mph. HAZARD...Damaging tornado. SOURCE...Law enforcement confirmed tornado. IMPACT...Flying debris will be dangerous to those caught without shelter. Mobile homes will be damaged or destroyed. Damage to roofs, windows, and vehicles will occur. Tree damage is likely. * The tornado will be near... Manson around 910 PM CDT. Clare and Pioneer around 920 PM CDT. Frank A Gotch State Park around 925 PM CDT. Humboldt and Badger around 930 PM CDT. Thor around 935 PM CDT. Eagle Grove, Goldfield, and Eagle Grove Municipal Airport around 940 PM CDT. Other locations impacted by this tornadic thunderstorm include Vincent, Rutland, Knierim, Clare, Frank A Gotch State Park, Hardy, Badger, Renwick, Goldfield, and Woolstock. PRECAUTIONARY/PREPAREDNESS ACTIONS... To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a basement or an interior room on the lowest floor of a sturdy building. Avoid windows. If you are outdoors, in a mobile home, or in a vehicle, move to the closest substantial shelter and protect yourself from flying debris. && TORNADO...OBSERVED; MAX HAIL SIZE...<.75 IN
Severe Thunderstorm Warning
Issued: 2:02 AM May. 18, 2026 – National Weather Service
The National Weather Service in Des Moines has issued a * Severe Thunderstorm Warning for... Webster County in central Iowa... Eastern Pocahontas County in northwestern Iowa... Western Wright County in north central Iowa... Kossuth County in north central Iowa... Northeastern Calhoun County in west central Iowa... Humboldt County in north central Iowa... Northwestern Hamilton County in central Iowa... Eastern Palo Alto County in northwestern Iowa... * Until 945 PM CDT. * At 901 PM CDT, a severe thunderstorm was located over Havelock, or 6 miles north of Pocahontas, moving east at 60 mph. HAZARD...70 mph wind gusts and nickel size hail. SOURCE...Radar indicated. IMPACT...Expect considerable tree damage. Damage is likely to mobile homes, roofs, and outbuildings. * Locations impacted include... Fort Dodge, Webster City, Algona, Emmetsburg, Dakota City, Humboldt, Eagle Grove, Manson, Gowrie, Five Island Lake, Union Slogh, Fort Dodge Regional Airport, West Bend, Bancroft, Goldfield, Coalville, Rolfe, Badger, Otho, and Burt. PRECAUTIONARY/PREPAREDNESS ACTIONS... This is a DANGEROUS SITUATION. This storm is producing widespread wind damage! SEEK SHELTER NOW inside a sturdy structure and stay away from windows! Intense thunderstorm lines can produce brief tornadoes and widespread significant wind damage. Although a tornado is not immediately likely, it is best to move to an interior room on the lowest floor of a building. This storm may cause serious injury and significant property damage. A Tornado Watch remains in effect until 100 AM CDT for north central and northwestern Iowa. A Tornado Watch also remains in effect until 300 AM CDT for central and west central Iowa. && THUNDERSTORM DAMAGE THREAT...CONSIDERABLE; HAIL THREAT...RADAR INDICATED; MAX HAIL SIZE...0.88 IN; WIND THREAT...RADAR INDICATED; MAX WIND GUST...70 MPH
Severe Thunderstorm Warning
Issued: 1:51 AM May. 18, 2026 – National Weather Service
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CDT FOR WESTERN GREENE...SOUTHEASTERN SAC...SOUTHERN CALHOUN...CRAWFORD AND CARROLL COUNTIES... At 851 PM CDT, severe thunderstorms were located along a line extending from near Auburn to Arcadia to Buck Grove, moving east at 55 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Carroll, Denison, Manning, Coon Rapids, Glidden, Schleswig, Manilla, Scranton, Dow City, Charter Oak, Arcadia, Breda, Vail, Churdan, Templeton, Westside, Kiron, Dedham, Deloit, and Halbur. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Tornado Watch remains in effect until 300 AM CDT for west central Iowa. Intense thunderstorm lines can produce brief tornadoes and widespread significant wind damage. Although a tornado is not immediately likely, it is best to move to an interior room on the lowest floor of a building. These storms may cause serious injury and significant property damage. && TORNADO...POSSIBLE; HAIL THREAT...RADAR INDICATED; MAX HAIL SIZE...<.75 IN; WIND THREAT...RADAR INDICATED; MAX WIND GUST...60 MPH
Tornado Watch
Issued: 1:08 AM May. 18, 2026 – National Weather Service
THE NATIONAL WEATHER SERVICE HAS ISSUED TORNADO WATCH 218 IN EFFECT UNTIL 3 AM CDT MONDAY FOR THE FOLLOWING AREAS IN IOWA THIS WATCH INCLUDES 35 COUNTIES IN CENTRAL IOWA BOONE DALLAS GRUNDY HAMILTON HARDIN JASPER MARSHALL POLK POWESHIEK STORY TAMA WEBSTER IN NORTHEAST IOWA BLACK HAWK IN SOUTH CENTRAL IOWA CLARKE DECATUR LUCAS MADISON MAHASKA MARION MONROE RINGGOLD UNION WARREN WAYNE IN SOUTHWEST IOWA ADAIR ADAMS CASS TAYLOR IN WEST CENTRAL IOWA AUDUBON CALHOUN CARROLL CRAWFORD GREENE GUTHRIE SAC THIS INCLUDES THE CITIES OF ACKLEY, ADAIR, ADEL, ALBIA, ALLERTON, AMES, ATLANTIC, AUDUBON, BAYARD, BEDFORD, BOONE, CARLISLE, CARROLL, CASEY, CEDAR FALLS, CHARITON, CONRAD, CORNING, CORYDON, CRESTON, DENISON, DES MOINES, DIKE, DYSART, EARLHAM, EARLY, ELDORA, EXIRA, FONTANELLE, FORT DODGE, GLADBROOK, GREENFIELD, GRINNELL, GRUNDY CENTER, GUTHRIE CENTER, HUMESTON, INDIANOLA, IOWA FALLS, JEFFERSON, KNOXVILLE, LAKE CITY, LAKE VIEW, LAMONI, LENOX, LEON, MANSON, MARSHALLTOWN, MOUNT AYR, NEW MARKET, NEWTON, NORWALK, ODEBOLT, OSCEOLA, OSKALOOSA, PANORA, PELLA, PERRY, POMEROY, REINBECK, ROCKWELL CITY, SAC CITY, SCHALLER, SEYMOUR, STUART, TAMA, TOLEDO, TRAER, WALL LAKE, WATERLOO, WAUKEE, WEBSTER CITY, WELLSBURG, AND WINTERSET. * PRIMARY THREATS INCLUDE... A COUPLE TORNADOES POSSIBLE. SCATTERED DAMAGING WINDS AND ISOLATED SIGNIFICANT GUSTS TO 80 MPH LIKELY. ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE. PROBABILITY TABLE: PROB OF 2 OR MORE TORNADOES : 40% PROB OF 1 OR MORE STRONG /EF2-EF5/ TORNADOES : 20% 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 : 30% PROB OF 1 OR MORE HAIL EVENTS >= 2 INCHES : 20% PROB OF 6 OR MORE COMBINED SEVERE HAIL/WIND EVENTS : 90% MEAN STORM MOTION /MPH/ : NE 45
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