This alert expired on 10 August 2026 at 00:15 UTC. It is kept here as a record.
No stronger detection stands among the 24 recorded within 20 km of this point since 26 March 2026 — 2 others scored the same. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued August 9 at 7:45PM EDT until August 9 at 8:15PM EDT by NWS Northern Indiana
An estimated 37,467 people live within 50 km of this point.
Nearby, since 26 March 2026
- July 18, 2026 · score 34 · 9.8 km
- July 3, 2026 · score 34 · 17.9 km
- July 3, 2026 · score 43 · 18.5 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 58 out of 100, at 91 % 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) | 58 / 100 |
| Our confidence | 91% |
| Coordinates | 41.6250, -84.3817 |
| Nearest City | Defiance (38 km) |
| Population Exposed | 37.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-09T23:45:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.b33f5c28fd58b22d3588e4edb27e302ccdb858c9.001.1 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Fulton, OH; Williams, OH |
| Headline | Tornado Warning issued August 9 at 7:45PM EDT until August 9 at 8:15PM EDT by NWS Northern Indiana |
| Expires | 2026-08-09T20:15:00-04:00 |
| SenderName | NWS Northern Indiana |
| HasExactCoords | true |
| Iem TypeSummary | D |
| Iem City | 2 S Ashley |
| Iem County | De Kalb |
| Iem State | IN |
| Iem Wfo | IWX |
| Iem Remark | 1 inch tree limbs down. Also enough water on the road to cause hydroplaning. Time estimated by radar. |
| MergedSources | [{"id":"iem_D_41.310_-85.000_1786315980000","source":"iem","severity":"low","severityValue":25,"timestamp":1786315980000,"latitude":41.31,"longitude":-85},{"id":"iem_D_41.500_-85.070_1786315740000","source":"iem","severity":"low","severityValue":25,"timestamp":1786315740000,"latitude":41.5,"longitude":-85.07}] |
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 in this area?
Calamity.live data shows a weather event with CalamityScore 58/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.