This alert expired on 10 June 2026 at 20:45 UTC. It is kept here as a record.
No stronger detection stands among the 42 recorded within 20 km of this point since 16 March 2026 — 3 others scored the same. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued June 10 at 3:35PM CDT until June 10 at 3:45PM CDT by NWS Milwaukee/Sullivan WI
An estimated 189,980 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 1, 2026 · score 43 · 7.8 km
- July 9, 2026 · score 43 · 7.9 km
- July 27, 2026 · score 43 · 12.5 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 67 out of 100, at 80 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Critical |
| Calamity Score (ours) | 67 / 100 |
| Our confidence | 80% |
| Coordinates | 43.7286, -88.2957 |
| Nearest City | Fond du Lac (13 km) |
| Population Exposed | 190.0K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-06-10T20:35:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.4258d92e7e91e2943b25ec4beeba44fc6aead210.001.1 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Fond du Lac, WI |
| Headline | Tornado Warning issued June 10 at 3:35PM CDT until June 10 at 3:45PM CDT by NWS Milwaukee/Sullivan WI |
| Expires | 2026-06-10T15:45:00-05:00 |
| SenderName | NWS Milwaukee/Sullivan WI |
| HasExactCoords | true |
Safety Information
If a tornado warning is issued: go to a basement or an interior room on the lowest floor, away from windows. A vehicle and a mobile home are not shelter. Cover your head and neck. Wait for the official all-clear before going outside, and watch for downed power lines and gas leaks afterwards.
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 Fond du Lac?
Calamity.live data shows a weather event with CalamityScore 67/100, near Fond du Lac (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.