Dense Fog Advisory Issued for Sioux, O'Brien, Plymouth, and Cherokee Counties Until 9 AM Wednesday
The National Weather Service has issued a Dense Fog Advisory for parts of northwest Iowa, effective until 9 AM CDT Wednesday.
Osceola County, Iowa FirstAlerts
Everything reported for Osceola County and within 40 miles of it, at every level. Warnings and official records name the county they apply to, which is the level most of them are issued at.
Severe Weather
3 reportsFlood Watch for Lyon, Osceola, Dickinson, and Other Counties Until 10 PM CDT This Evening
The National Weather Service warns of possible flash flooding from excessive rainfall across portions of Iowa, Minnesota, and South Dakota.
Heat Advisory Issued for Parts of Iowa, Nebraska, and South Dakota
The National Weather Service warns of heat index values up to 105 degrees from 1 PM to 6 PM CDT on September 4, 2026.