This alert expired on 5 September 2026 at 10:30 UTC. It is kept here as a record.
It is the 8th strongest of the 39 detections recorded within 20 km of this point since 23 March 2026. The last comparable one was on 4 September 2026.
What the source measured
NOAA reported: Flash Flood Warning issued September 5 at 3:34AM EDT until September 5 at 6:30AM EDT by NWS Wilmington OH
An estimated 102,338 people live within 50 km of this point.
Nearby, since 23 March 2026
- September 5, 2026 · score 37 · 2.1 km
- August 10, 2026 · score 43 · 7.4 km
- August 10, 2026 · score 39 · 9.5 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 37 out of 100, at 87 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 37 / 100 |
| Our confidence | 87% |
| Coordinates | 40.3893, -83.8287 |
| Nearest City | Sidney (31 km) |
| Population Exposed | 102.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-05T07:34:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.a71d86a69035a7d4553b8d83385401d6d650b667.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Logan, OH |
| Headline | Flash Flood Warning issued September 5 at 3:34AM EDT until September 5 at 6:30AM EDT by NWS Wilmington OH |
| Expires | 2026-09-05T06:30:00-04:00 |
| SenderName | NWS Wilmington OH |
| HasExactCoords | true |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | Elida |
| Spc County | Allen |
| Spc State | OH |
| Spc Comments | Photo shows large tree down in a backyard. Tree broken several feet up from the bottom. Perhaps some rot in the center of the tree per photo. (IWX) |
| MergedSources | [{"id":"spc_wind_40.05_-84.20_50","source":"spc","severity":"medium","severityValue":45,"timestamp":1788597992006,"latitude":40.05,"longitude":-84.2},{"id":"spc_wind_39.89_-84.41_64","source":"spc","severity":"medium","severityValue":45,"timestamp":1788597992006,"latitude":39.89,"longitude":-84.41},{"id":"spc_wind_39.90_-84.40_66","source":"spc","severity":"medium","severityValue":45,"timestamp":1788597992006,"latitude":39.9,"longitude":-84.4},{"id":"spc_wind_39.85_-84.31_80","source":"spc","severity":"medium","severityValue":45,"timestamp":1788597992006,"latitude":39.85,"longitude":-84.31},{"id":"spc_wind_40.84_-83.98_228","source":"spc","severity":"medium","severityValue":45,"timestamp":1788593280000,"latitude":40.84,"longitude":-83.98},{"id":"spc_wind_40.79_-84.20_229","source":"spc","severity":"medium","severityValue":45,"timestamp":1788593580000,"latitude":40.79,"longitude":-84.2}] |
Safety Information
During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.
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 37/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.