This alert expired on 25 May 2026 at 04:00 UTC. It is kept here as a record.
It is the 19th strongest of the 50 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 13 May 2026. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued May 24 at 8:59PM EDT until May 25 at 12:00AM EDT by NWS Pittsburgh PA
Nearby, since 16 March 2026
- June 7, 2026 · score 34 · 12.0 km
- July 22, 2026 · score 34 · 16.2 km
- July 18, 2026 · score 34 · 17.2 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 22 out of 100, at 59 % 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) | 22 / 100 |
| Our confidence | 59% |
| Coordinates | 39.6042, -80.9960 |
| Nearest City | Wheeling (56 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-25T00:59:00.000Z |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Allegheny, PA; Butler, PA; Harrison, OH; Jefferson, OH; Brooke, WV; Hancock, WV; Columbiana, OH; Armstrong, PA; Beaver, PA; Butler, PA; Clarion, PA; Lawrence, PA; Mercer, PA; Venango, PA and 5 more areas |
| Headline | Flash Flood Warning issued May 24 at 8:59PM EDT until May 25 at 12:00AM EDT by NWS Pittsburgh PA |
| Expires | 2026-05-25T00:00:00-04:00 |
| SenderName | NWS Pittsburgh PA |
| HasExactCoords | true |
| MergedCount | 8 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.0547ed4d9395b08502488455811ea171d4aef7a6.001.1","noaa_urn:oid:2.49.0.1.840.0.ff9bbb7195b85ba363766b346c989b1daffb0689.001.1","noaa_urn:oid:2.49.0.1.840.0.cbea56b9e47d4d2b8a4706694829fc6d5feea827.001.1","noaa_urn:oid:2.49.0.1.840.0.d48d660ed2320436e2b512370a0c37aa7a00c7e4.001.1","noaa_urn:oid:2.49.0.1.840.0.503c0f7073d4984026510ea881ea7a428ba275ef.001.1","noaa_urn:oid:2.49.0.1.840.0.3312fe1f825a40f41762085dbe7136d8c0cb5742.001.1","noaa_urn:oid:2.49.0.1.840.0.f288a128fdc168e48e855c0cc50ba8c110805cae.001.1","noaa_urn:oid:2.49.0.1.840.0.b746af59214237ef0cf4aeb568c6ae031b75bf48.001.1"] |
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 22/100, near Wheeling (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.