This alert expired on 21 May 2026 at 01:01 UTC. It is kept here as a record.
It is the 14th strongest of the 34 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 20 May 2026. 8 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued May 20 at 8:51PM EDT until May 20 at 9:00PM EDT by NWS Wilmington OH
An estimated 59,175 people live within 50 km of this point.
Nearby, since 16 March 2026
- May 20, 2026 · score 39 · 0.0 km
- May 17, 2026 · score 43 · 9.7 km
- June 25, 2026 · score 43 · 17.1 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 39 out of 100, at 81 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 39 / 100 |
| Our confidence | 81% |
| Coordinates | 38.6167, -84.3261 |
| Nearest City | Independence (40 km) |
| Population Exposed | 59.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-21T00:51:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.11d5fc1d4d74ed3f6055e58ebae01a9ca85a9ee1.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Bracken, KY; Pendleton, KY |
| Headline | Flash Flood Warning issued May 20 at 8:51PM EDT until May 20 at 9:00PM EDT by NWS Wilmington OH |
| Expires | 2026-05-20T21:01:00-04:00 |
| SenderName | NWS Wilmington OH |
| HasExactCoords | true |
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 39/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.