This alert expired on 2 August 2026 at 01:15 UTC. It is kept here as a record.
No stronger detection stands among the 82 recorded within 20 km of this point since 12 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 August 1 at 9:02PM EDT until August 1 at 9:15PM EDT by NWS Wilmington OH
An estimated 657,591 people live within 50 km of this point.
Nearby, since 12 March 2026
- May 19, 2026 · score 48 · 6.6 km
- March 16, 2026 · score 48 · 8.0 km
- March 12, 2026 · score 48 · 8.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 72 out of 100, at 80 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | critical |
| Calamity Score (ours) | 72 / 100 |
| Our confidence | 80% |
| Coordinates | 39.8620, -84.2900 |
| Nearest City | Trotwood (7 km) |
| Population Exposed | 657.6K within 50 km |
| Impact Tier | catastrophic |
| Timestamp | 2026-08-02T01:02:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.76df0e10705403bc4dbe8bbceaaa4c3cdc2ee539.001.1 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Montgomery, OH |
| Headline | Tornado Warning issued August 1 at 9:02PM EDT until August 1 at 9:15PM EDT by NWS Wilmington OH |
| Expires | 2026-08-01T21:15:00-04:00 |
| SenderName | NWS Wilmington OH |
| 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 10 February 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.
Calamity.live data shows a weather event with CalamityScore 72/100, near Trotwood (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.