This alert expired on 11 August 2026 at 20:00 UTC. It is kept here as a record.
No stronger detection stands among the 82 recorded within 20 km of this point since 11 March 2026 — 9 others scored the same. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued August 11 at 3:24PM EDT until August 11 at 4:00PM EDT by NWS Wilmington OH
An estimated 695,313 people live within 50 km of this point.
Nearby, since 11 March 2026
- March 11, 2026 · score 48 · 6.2 km
- August 11, 2026 · score 72 · 8.7 km
- April 28, 2026 · score 48 · 10.2 km
How we know
Confirmed by 8 independent sources, including NOAA.
Our own score for this event is 72 out of 100, at 91 % 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 | 91% |
| Coordinates | 39.0992, -84.7610 |
| Nearest City | Burlington (8 km) |
| Population Exposed | 695.3K within 50 km |
| Impact Tier | catastrophic |
| Timestamp | 2026-08-11T19:24:00.000Z |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Dearborn, IN; Ohio, IN; Switzerland, IN; Boone, KY; Campbell, KY; Gallatin, KY; Kenton, KY; Butler, OH; Hamilton, OH; Dearborn, IN; Boone, KY; Hamilton, OH |
| Headline | Tornado Warning issued August 11 at 3:24PM EDT until August 11 at 4:00PM EDT by NWS Wilmington OH |
| Expires | 2026-08-11T16:00:00-04:00 |
| SenderName | NWS Wilmington OH |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.4dfd209970c126f9ca28f66869f85d18ff08a27b.001.1","noaa_urn:oid:2.49.0.1.840.0.845873dbb85f63d47c775c7145638c18787cfe96.001.1","noaa_urn:oid:2.49.0.1.840.0.417424a6ff51ad6cc0f0f91d40263afae49ad857.002.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 48 |
| Iem Unit | MPH |
| Iem City | 2 WSW Oxford |
| Iem County | Butler |
| Iem State | OH |
| Iem Wfo | ILN |
| Iem Remark | AWOS station KOXD Oxford Miami University Apt. |
| Google News RssFeed | weather |
| Google News SourceName | FOX19 | Cincinnati |
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 Burlington (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 194 scientific monitoring sources.