Right now
The most recent data we hold from NOAA arrived 6 hours ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
One other detection within 20 km in the last 24 hours, 16 km from here.
This alert expired on 28 May 2026 at 00:30 UTC. It is kept here as a record.
No stronger detection stands among the 100 recorded within 20 km of this point since 17 March 2026 — 12 others scored the same. 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 4:33PM EDT until May 27 at 8:30PM EDT by NWS Charleston WV
Urban PEI: 30,991 within a heuristic 50 km radius; not unique people.
Nearby, since 17 March 2026
- May 27, 2026 · score 34 · 11.0 km
- May 26, 2026 · score 34 · 12.2 km
- August 7, 2026 · score 34 · 13.7 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 34 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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 |
| Legacy data-support index | 0.89/1 |
| Coordinates | 38.9466, -81.4213 |
| Nearest City | Parkersburg (38 km) |
| Urban exposure index (PEI) | 31.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-27T20:33:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.2de53ecee22313ca292045ae5f93c303 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-05-27T20:33:00.000Z.
First archived: 2026-05-27T20:49:32.275Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | 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 4:33PM EDT until May 27 at 8:30PM EDT by NWS Charleston WV |
| Expires | 2026-05-27T20:30:00-04:00 |
| SenderName | NWS Charleston WV |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.2de53ecee22313ca292045ae5f93c303ade42bc4.001.1","noaa_urn:oid:2.49.0.1.840.0.f96023ddfde4bc86a4c2affe7fb704a4d6834499.001.1"] |
| Iem TypeSummary | F |
| Iem City | 7 NW Glenville |
| Iem County | Gilmer |
| Iem State | WV |
| Iem Wfo | RLX |
| Iem Remark | Flooding observed at the intersection of Newberne Road and Jessie Run Road. |
| MergedSources | [{"id":"iem_F_39.030_-80.780_1779892440000","source":"iem","severity":"low","severityValue":25,"timestamp":1779892440000,"latitude":39.03,"longitude":-80.78},{"id":"iem_F_39.010_-80.930_1779892500000","source":"iem","severity":"low","severityValue":25,"timestamp":1779892500000,"latitude":39.01,"longitude":-80.93}] |
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.
Review the area, threshold and delivery channel in your account.
Want to know when something happens in this area?