Hazardous Weather Outlook
Issued by NWS Sioux Falls, SD
Issued by NWS Sioux Falls, SD
675 FLUS43 KFSD 250927 HWOFSD Hazardous Weather Outlook National Weather Service Sioux Falls SD 427 AM CDT Sat Jul 25 2026 IAZ001>003-013-014-021-022-032-MNZ071-072-080-081-089-090-097-098- SDZ038>040-052>062-066-067-260930- Lyon-Osceola-Dickinson-O`Brien-Clay-Cherokee-Buena Vista-Ida-Lincoln- Murray-Cottonwood-Nobles-Jackson-Pipestone-Rock-Beadle-Kingsbury- Brookings-Jerauld-Sanborn-Miner-Lake-Moody-Brule-Aurora-Davison- Hanson-McCook-Minnehaha-Turner- 427 AM CDT Sat Jul 25 2026 This Hazardous Weather Outlook is for northwest Iowa, west central Iowa, southwest Minnesota, central South Dakota, east central South Dakota, south central South Dakota and southeast South Dakota. .DAY ONE...Today and tonight. Dangerously hot and humid weather is expected today, with afternoon heat index values climbing above 100 degrees. Nighttime lows remain above 70 degrees, offering little relief from the heat. There is a growing risk for isolated to scattered severe storms this evening into the early overnight hours. Storms moving east out of central South Dakota may produce pockets of damaging wind, possibly topping 75 mph at times. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Dangerous heat will persist through Sunday, with afternoon heat indices again topping 100 degrees. While details are much more uncertain, if storms are able to develop late Sunday or Sunday night, a few strong to severe storms will be possible. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed between 8 PM and 2 AM tonight. $$ IAZ012-020-031-NEZ013-014-SDZ050-063>065-068>071-260930- Sioux-Plymouth-Woodbury-Dixon-Dakota-Gregory-Charles Mix-Douglas- Hutchinson-Bon Homme-Yankton-Clay-Union- 427 AM CDT Sat Jul 25 2026 This Hazardous Weather Outlook is for northwest Iowa, west central Iowa, northeast Nebraska, south central South Dakota and southeast South Dakota. .DAY ONE...Today and tonight. Dangerously hot and humid weather is expected today, with afternoon heat index values climbing above 105 degrees. Nighttime lows remain above 70 degrees, offering little relief from the heat. There is a risk for isolated severe storms this evening into the early overnight hours. Storms moving east out of central South Dakota may produce pockets of damaging wind. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Dangerous heat will persist through Sunday, with afternoon heat indices again topping 105 degrees. While details are much more uncertain, if storms are able to develop late Sunday or Sunday night, a few strong to severe storms will be possible. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. $$