Rotating Storms Near Sioux Falls Threaten Southeast South Dakota and Northwest Iowa With Tornadoes Possible for the Next 1 to 2 Hours
SIOUX FALLS, SD — A localized corridor of enhanced tornado potential is ongoing right now across southeast South Dakota, northeast Nebraska, and northwest Iowa as of 9:21 PM CDT Sunday, May 31, 2026. Storms near Sioux Falls continue showing signs of rotation and the Storm Prediction Center has confirmed conditions remain favorable for tornado development for another 1 to 2 hours.
Where the Greatest Tornado Risk Is Right Now
Live radar shows active tornado warning boxes clustered just south of Sioux Falls near the South Dakota-Iowa border, tracking east-southeast. The most dangerous storms are on the southern flank of the storm cluster, where rotation is most pronounced and tornado development is most likely as cells push toward Le Mars, Orange City, and Sioux City in northwest Iowa.
The red circled zone on current radar encompasses the active warning area spanning from just south of Sioux Falls through the Lincoln County and Union County corridor in South Dakota and pushing toward the Iowa border counties.
Northwest Iowa Is Next in Line
The storm motion is carrying these rotating cells directly toward northwest Iowa. Communities near the South Dakota and Nebraska border including Sioux City, Le Mars, Orange City, and Storm Lake are in the direct path of these storms over the next 60 to 90 minutes. If you are in northwest Iowa, shelter now and do not wait for sirens.
Immediate Action for Affected Communities
| Area | Status | Action Needed |
|---|---|---|
| South of Sioux Falls, SD | Active tornado warning zone | Shelter immediately |
| Le Mars, Orange City, IA | Directly in storm path | Shelter now |
| Sioux City, IA | Storm approaching | Move to shelter immediately |
| Storm Lake, Spencer, IA | Outer risk zone | Be ready to shelter quickly |
Confidence in continued tornado-warned storm activity across this corridor for the next 1 to 2 hours is HIGH based on current Storm Prediction Center assessment and live radar rotation signatures.
More severe weather coverage is always on the horizon. Stay informed at ChicagoMusicGuide.com — your source for live tornado tracking and breaking severe weather alerts across South Dakota, Nebraska, Iowa, and the entire United States.
