Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 138, NWS Green Bay, WI
NWS Green Bay, WI issued this severe thunderstorm warning at Aug 21, 2026, 6:40 PM CDT for Outagamie County, Waupaca County, Wisconsin. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 21, 2026, 6:40 PM CDT (23:40 UTC)
- Expired
- Aug 21, 2026, 7:25 PM CDT
- In force
- 45 min
- Issued by
- NWS Green Bay, WI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Outagamie County, WI, Waupaca County, WI
The radar
The Green Bay radar (KGRB), 48 km from the middle of the area, began a volume at 23:40 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The office that day
Everything else NWS Green Bay, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 21, 5:53 AM CDT | Special Weather Statement | GRB | Waushara | 37 min |
| Aug 21, 4:47 PM CDT | Special Weather Statement | GRB | Winnebago | 28 min |
| Aug 21, 4:50 PM CDT | Special Weather Statement | GRB | Waupaca | 25 min |
| Aug 21, 5:41 PM CDT | Special Weather Statement | GRB | Waupaca | 34 min |
| Aug 21, 6:29 PM CDT | Special Weather Statement | GRB | Waupaca | 31 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 2026Every severe thunderstorm warning in 2026
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.