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.
Severe Weather in Sioux County, Iowa
Every severe weather report published for Sioux County, Iowa, newest first.
Flood 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.
NWS Issues Dense Fog Advisory for Portions of Iowa, Nebraska, and South Dakota
The National Weather Service in Sioux Falls has issued a dense fog advisory in effect through 9 AM CDT on August 20, 2026.