Severe Thunderstorm Warning for Fayette and Winneshiek Counties, IA
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NWS La Crosse has issued a Severe Thunderstorm Warning for northeastern Fayette County and southeastern Winneshiek County in Iowa until 5:00 PM CDT.
Read this weather record in 30 seconds
- Record type
- Severe Thunderstorm Warning
- Affected area
- Northeastern Iowa
- Issued
- September 4, 2026
- Issuing authority
- NWS La Crosse WI
Storm notices can cover different combinations of wind, hail, lightning, and rainfall. Use the original notice for the hazards and boundaries attached to this specific record.
Record status: publication date is recent, but current status is not stored on this page. Check the issuing agency's live warning service before acting because warnings can be updated, narrowed, or cancelled.
Alert Details
A Severe Thunderstorm Warning has been issued by the National Weather Service in La Crosse WI. The alert is effective from September 4, 2026 at 4:35 PM CDT until September 4, 2026 at 5:00 PM CDT.
Affected Areas
The warning covers Northeastern Fayette County and Southeastern Winneshiek County in northeastern Iowa, including the locations of Castalia, Frankville, County Road W 46 And Centennial Road, and Montauk Historic Site.
What You Should Do
For your protection, move to an interior room on the lowest floor of a building.
Expected Conditions
At 4:35 PM CDT, a severe thunderstorm was located over Ossian, or 11 miles north of West Union, moving east at 25 mph. Hazards include 60 mph wind gusts and quarter size hail. Hail damage to vehicles is expected, along with wind damage to roofs, siding, and trees.
Timeline
The warning is in effect until 5:00 PM CDT on September 4, 2026.
Original source: NOAA Official Notice ↗
Related Weather Alerts
All Weather Alerts →Nationwide notices with similar length or severity timing 8
Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (920 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to September 4, 2026.
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