This alert expired on 28 May 2026 at 00:00 UTC. It is kept here as a record.
It is the 5th strongest of the 59 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued May 27 at 4:54PM EDT until May 27 at 8:00PM EDT by NWS Charleston WV
An estimated 30,991 people live within 50 km of this point.
Nearby, since 16 March 2026
- May 26, 2026 · score 34 · 16.8 km
- July 18, 2026 · score 39 · 21.4 km
- July 5, 2026 · score 39 · 23.8 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 34 out of 100, at 79 % 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) | 34 / 100 |
| Our confidence | 79% |
| Coordinates | 38.8791, -81.5148 |
| Nearest City | Parkersburg (44 km) |
| Population Exposed | 31.0K within 50 km |
| Impact Tier | significant |
| Date | 2026-05-27 — time not reported by the source |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.c2857d4ec84f4aa9e5282ec90a04e53c |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Calhoun, WV; Jackson, WV; Mason, WV; Putnam, WV; Roane, WV; Wirt, WV; Barbour, WV; Braxton, WV; Calhoun, WV; Doddridge, WV; Gilmer, WV; Harrison, WV; Lewis, WV; Ritchie, WV; Taylor, WV; Upshur, WV; Wirt, WV; Gallia, OH; Lawrence, OH; Meigs, OH; Jackson, WV; Mason, WV |
| Headline | Flash Flood Warning issued May 27 at 4:54PM EDT until May 27 at 8:00PM EDT by NWS Charleston WV |
| Expires | 2026-05-27T20:00:00-04:00 |
| SenderName | NWS Charleston WV |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.c2857d4ec84f4aa9e5282ec90a04e53ccb0bfa80.001.1","noaa_urn:oid:2.49.0.1.840.0.2de53ecee22313ca292045ae5f93c303ade42bc4.001.1","noaa_urn:oid:2.49.0.1.840.0.f96023ddfde4bc86a4c2affe7fb704a4d6834499.001.1"] |
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 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 34/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.