This alert expired on 18 June 2026 at 06:05 UTC. It is kept here as a record.
No stronger detection stands among the 54 recorded within 20 km of this point since 15 March 2026 — 7 others scored the same. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued June 18 at 1:55AM EDT until June 18 at 2:00AM EDT by NWS Wilmington OH
An estimated 760,805 people live within 50 km of this point.
Nearby, since 15 March 2026
- July 18, 2026 · score 48 · 2.9 km
- July 18, 2026 · score 48 · 7.1 km
- May 25, 2026 · score 48 · 8.7 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 | 39.1665, -84.2127 |
| Nearest City | Norwood (21 km) |
| Population Exposed | 760.8K within 50 km |
| Impact Tier | catastrophic |
| Timestamp | 2026-06-18T05:55:00.000Z |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Butler, OH; Hamilton, OH; Adams, OH; Brown, OH; Highland, OH |
| Headline | Tornado Warning issued June 18 at 1:55AM EDT until June 18 at 2:00AM EDT by NWS Wilmington OH |
| Expires | 2026-06-18T02:05:00-04:00 |
| SenderName | NWS Wilmington OH |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.27dac1530f94b8b6206423b6188e999c89388e05.001.1","noaa_urn:oid:2.49.0.1.840.0.7247c71371e26b387e73a23bbbf76eafca74d01b.001.1"] |
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 Norwood (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.