This alert expired on 25 May 2026 at 00:00 UTC. It is kept here as a record.
It is the 4th strongest of the 98 detections recorded within 20 km of this point since 12 March 2026. The last comparable one was on 20 May 2026. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued May 24 at 4:53PM EDT until May 24 at 8:00PM EDT by NWS Charleston WV
An estimated 173,284 people live within 50 km of this point.
Nearby, since 12 March 2026
- May 27, 2026 · score 43 · 5.2 km
- August 11, 2026 · score 43 · 8.3 km
- August 10, 2026 · score 39 · 10.5 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 out of 100, at 79 % 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) | 43 / 100 |
| Our confidence | 79% |
| Coordinates | 39.7035, -82.2318 |
| Nearest City | Lancaster (32 km) |
| Population Exposed | 173.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-24T20:53:00.000Z |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Athens, OH; Morgan, OH; Perry, OH |
| Headline | Flash Flood Warning issued May 24 at 4:53PM EDT until May 24 at 8:00PM EDT by NWS Charleston WV |
| Expires | 2026-05-24T20:00:00-04:00 |
| SenderName | NWS Charleston WV |
| 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 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 43/100, near Lancaster (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.