⚠️ Severe Thunderstorm Warning – Lyon, IA; O’Brien, IA; Osceola, IA; Plymouth, IA; Sioux, IA; Nobles, MN; Rock, MN; Lincoln, SD; Union, SD – Tuesday, September 1, 2026

Severe Thunderstorm Warning issued September 1 at 10:02PM CDT until September 1 at 10:45PM CDT by NWS Sioux Falls SD

Details

SVRFSD

The National Weather Service in Sioux Falls has issued a

* Severe Thunderstorm Warning for…
Lyon County in northwestern Iowa…
Western Osceola County in northwestern Iowa…
Sioux County in northwestern Iowa…
North central Plymouth County in northwestern Iowa…
Northwestern O’Brien County in northwestern Iowa…
Southeastern Rock County in southwestern Minnesota…
Southwestern Nobles County in southwestern Minnesota…
Southeastern Lincoln County in southeastern South Dakota…
Northeastern Union County in southeastern South Dakota…

* Until 1045 PM CDT.

* At 1001 PM CDT, severe thunderstorms were located along a line
extending from near Larchwood to Hull to near Maurice, moving
northeast at 50 mph.

HAZARD…70 mph wind gusts.

SOURCE…Public. At 950 PM CDT, an 81 mph wind gust was reported 9
miles north-northeast of Hawarden.

IMPACT…Expect considerable tree damage. Damage is likely to
mobile homes, roofs, and outbuildings.

* Severe thunderstorms will be near…
Orange City, Hull, Alton, Larchwood, Boyden, Doon, Lester, and
Alvord around 1005 PM CDT.
Rock Rapids, George, Hospers, Hills, and Matlock around 1010 PM
CDT.
Sheldon around 1015 PM CDT.
Luverne, Ellsworth, Little Rock, and Ashton around 1020 PM CDT.

Other locations in the path of these severe thunderstorms include
Sibley, Archer, Sanborn, Adrian, Blue Mounds State Park, Rushmore and
Melvin.

Instructions

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.

To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Sioux Falls.

This alert was automatically posted by SkyGuard, MWSC’s severe weather alerting system. Source: National Weather Service.