NWS / NOAA weather: Tornado Warning issued September 1 at 8:47PM CDT until September 1 at 9:00PM CDT by NWS Omaha/Valley NE

At 847 PM CDT, a severe thunderstorm capable of producing a tornado
was located over St. Helena, or 9 miles southeast of Yankton, moving
east at 40 mph.

HAZARD...Tornado and ping pong ball size hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.

This tornadic thunderstorm will remain over mainly rural areas of
northeastern Cedar County, including the following locations...
Menominee, Brooky Bottom, and St. Helena Boat Dock.

Severity

Extreme (5/5) · CAP Extreme

This month

90th Weather alert at severity 5+ in the last 30 days