Reported by SPC today.
It is the 6th strongest of the 99 detections recorded within 20 km of this point since 15 March 2026. The last comparable one was on 8 July 2026.
What the source measured
SPC reported: Wind UNK kt near 1 N Greenville, Outagamie, WI. Couple trees down. (GRB)
An estimated 366,269 people live within 50 km of this point.
Nearby, since 15 March 2026
- September 2, 2026 · score 37 · 6.7 km
- July 2, 2026 · score 43 · 9.4 km
- June 10, 2026 · score 37 · 12.8 km
How we know
Confirmed by 2 independent sources, including SPC.
Our own score for this event is 37 out of 100, at 81 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 37 / 100 |
| Our confidence | 81% |
| Coordinates | 44.3100, -88.5300 |
| Nearest City | Appleton (10 km) |
| Population Exposed | 366.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-02T09:51:00.000Z |
| Source | https://www.spc.noaa.gov/climo/reports/today.html |
Score Breakdown
Technical Details
| ReportType | wind |
| Speed | UNK |
| Location | 1 N Greenville |
| County | Outagamie |
| State | WI |
| Comments | Couple trees down. (GRB) |
| Iem TypeSummary | D |
| Iem City | 1 N Greenville |
| Iem County | Outagamie |
| Iem State | WI |
| Iem Wfo | GRB |
| Iem Remark | Couple trees down. |
| MergedSources | [{"id":"iem_D_44.310_-88.530_1788342660000","source":"iem","severity":"low","severityValue":25,"timestamp":1788342660000,"latitude":44.31,"longitude":-88.53}] |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Want to know when something happens near Appleton?
Calamity.live data shows a weather event with CalamityScore 37/100, near Appleton (United States), based on data from spc. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.