This alert expired on 23 May 2026 at 20:15 UTC. It is kept here as a record.
It is the 5th strongest of the 77 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 19 May 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued May 23 at 6:52AM EDT until May 23 at 4:15PM EDT by NWS Charleston WV
An estimated 30,991 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 11, 2026 · score 34 · 0.6 km
- July 23, 2026 · score 34 · 8.3 km
- July 21, 2026 · score 58 · 12.8 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 34 out of 100, at 85 % 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) | 34 / 100 |
| Our confidence | 85% |
| Coordinates | 39.5611, -81.3482 |
| Nearest City | Parkersburg (37 km) |
| Population Exposed | 31.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-23T10:52:00.000Z |
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Washington, OH; Monroe, OH; Noble, OH |
| Headline | Flood Warning issued May 23 at 6:52AM EDT until May 23 at 4:15PM EDT by NWS Charleston WV |
| Expires | 2026-05-23T16:15:00-04:00 |
| SenderName | NWS Charleston WV |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.f1e4e04cf1fdcda2319ff597caac51001c5a9850.001.1","noaa_urn:oid:2.49.0.1.840.0.e9ed87b87c6af57e504b655630f7b96dfa65a844.001.1"] |
| Iem TypeSummary | E |
| Iem City | Glouster |
| Iem County | Athens |
| Iem State | OH |
| Iem Wfo | RLX |
| Iem Remark | Trained spotter in Glouster, OH reported that portions of Kennedy Rd and Oakdale Rd that parallel Sunday Creek are experiencing minor flooding. Roads are still passable and advised the water is not ri |
| MergedSources | [{"id":"iem_E_39.500_-82.090_1779541800000","source":"iem","severity":"low","severityValue":25,"timestamp":1779541800000,"latitude":39.5,"longitude":-82.09}] |
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 34/100, near Parkersburg (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.