| Event | Severe Thunderstorm Warning |
| Severity | Severe |
| Urgency | Immediate |
| Certainty | Observed |
| Area | Outagamie, WI; Waupaca, WI |
| Effective | 8/21/2026, 6:40:00 PM CDT |
| Expires | 8/21/2026, 7:45:00 PM CDT |
Severe Thunderstorm Warning issued August 21 at 6:40PM CDT until August 21 at 7:45PM CDT by NWS Green Bay WI
Details
SVRGRB
The National Weather Service in Green Bay has issued a
* Severe Thunderstorm Warning for…
Southwestern Outagamie County in northeastern Wisconsin…
Southern Waupaca County in northeastern Wisconsin…
* Until 745 PM CDT.
* At 640 PM CDT, severe thunderstorms were located along a line from
over New London to 7 miles east of Waupaca, or along a line from 18
miles northwest of Appleton to 7 miles east of Waupaca, moving
southeast at 15 mph.
HAZARD…60 mph wind gusts and quarter size hail.
SOURCE…Radar indicated.
IMPACT…Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
* This severe thunderstorm will be near…
Waupaca around 645 PM CDT.
Fremont around 715 PM CDT.
Appleton around 740 PM CDT.
Other locations impacted by the severe thunderstorm include
Northport, Royalton, Manawa, Sugar Bush, Shiocton, Fitzgerald
Corners, Ogdensburg, Weyauwega, Hortonville and Stephensville.
Instructions
Seek shelter inside a well-built structure and stay away from
windows. These storms are capable of producing damaging winds and
large hail.
This alert was automatically posted by SkyGuard, MWSC’s severe weather alerting system. Source: National Weather Service.
More Stories
⚠️ Severe Thunderstorm Watch – Kit Carson, CO; Yuma, CO; Cheyenne, KS; Sherman, KS; Dundy, NE – Friday, August 21, 2026
⚠️ Severe Thunderstorm Warning – Banner, NE; Cheyenne, NE; Kimball, NE; Morrill, NE – Friday, August 21, 2026
⚠️ Tornado Warning – Banner, NE; Cheyenne, NE; Kimball, NE; Morrill, NE – Friday, August 21, 2026