This alert expired on 10 August 2026 at 19:30 UTC. It is kept here as a record.
It is the 4th strongest of the 35 detections recorded within 20 km of this point since 23 March 2026. 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: Severe Thunderstorm Warning issued August 10 at 3:17PM EDT until August 10 at 3:30PM EDT by NWS Wilmington OH
An estimated 81,548 people live within 50 km of this point.
Nearby, since 23 March 2026
- August 10, 2026 · score 43 · 11.4 km
- August 11, 2026 · score 43 · 12.7 km
- May 19, 2026 · score 39 · 16.6 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 39 out of 100, at 90 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 39 / 100 |
| Our confidence | 90% |
| Coordinates | 40.4286, -83.7286 |
| Nearest City | Marysville (37 km) |
| Population Exposed | 81.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-10T19:17:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.c76f7bd9c9c860fcad58b00361f86245e347bbd0.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Logan, OH |
| Headline | Severe Thunderstorm Warning issued August 10 at 3:17PM EDT until August 10 at 3:30PM EDT by NWS Wilmington OH |
| Expires | 2026-08-10T15:30:00-04:00 |
| SenderName | NWS Wilmington OH |
| HasExactCoords | true |
| Iem TypeSummary | D |
| Iem City | Kenton |
| Iem County | Hardin |
| Iem State | OH |
| Iem Wfo | ILN |
| Iem Remark | A few power poles and some wires down in the Kenton area. Time estimated from radar. |
| MergedSources | [{"id":"iem_F_40.030_-83.040_1786383000000","source":"iem","severity":"low","severityValue":25,"timestamp":1786383000000,"latitude":40.03,"longitude":-83.04},{"id":"iem_D_40.650_-83.610_1786369800000","source":"iem","severity":"low","severityValue":25,"timestamp":1786369800000,"latitude":40.65,"longitude":-83.61}] |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 39/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.