August 11, 2026

Midwest Storm Chasers

Live Weather Coverage & Severe Storm Reporting

⚠️ Severe Thunderstorm Warning – Allamakee, IA; Winneshiek, IA – Tuesday, August 11, 2026

Event Severe Thunderstorm Warning
Severity Severe
Urgency Immediate
Certainty Observed
Area Allamakee, IA; Winneshiek, IA
Effective 8/11/2026, 7:30:00 AM CDT
Expires 8/11/2026, 8:15:00 AM CDT

Severe Thunderstorm Warning issued August 11 at 7:30AM CDT until August 11 at 8:15AM CDT by NWS La Crosse WI

Details

SVRARX

The National Weather Service in La Crosse has issued a

* Severe Thunderstorm Warning for…
Western Allamakee County in northeastern Iowa…
Winneshiek County in northeastern Iowa…

* Until 815 AM CDT.

* At 730 AM CDT, severe thunderstorms were located along a line
extending from Ridgeway to near Calmar to near Fort Atkinson,
moving northeast at 30 mph.

HAZARD…60 mph wind gusts.

SOURCE…Radar indicated.

IMPACT…Expect damage to roofs, siding, and trees.

* Locations impacted include…
Decorah, Waukon, Calmar, Ossian, Ridgeway, Castalia, Hanover,
County Roads A 52 And W 60, State Road 76 And County X 16, Festina,
Hesper, Nordness, Highlandville, Lake Meyer County Park, Quandahl,
Ludlow, Bluffton, County Road W 46 And Centennial Road, Locust, and
Sattre.

Instructions

For your protection move to an interior room on the lowest floor of a
building.


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