Right now
The most recent data we hold from NOAA arrived 4 minutes ago, and this point is in it.
7 other detections within 20 km in the last 24 hours, the nearest <1 km from here.
This alert expired on 21 September 2026 at 22:48 UTC. It is kept here as a record.
It is the 18th strongest of the 53 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 8 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued September 21 at 6:38PM EDT until September 21 at 6:45PM EDT by NWS Charleston WV
Nearby, since 16 March 2026
- July 6, 2026 · score 22 · 14.7 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 16 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 v5. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 16 / 100 |
| Legacy data-support index | 0.70/1 |
| Coordinates | 37.3222, -82.1644 |
| Nearest City | Bristol (80 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-09-21T22:38:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.031184f4ad5b2c583148fe182ae0df511a6745e0.001.1 |
Physical priority index · v5. 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: 2026-09-21T22:38:00.000Z.
First archived: 2026-09-21T22:41:42.447Z. 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 | Buchanan, VA; Dickenson, VA; McDowell, WV; Wyoming, WV |
| Headline | Flash Flood Warning issued September 21 at 6:38PM EDT until September 21 at 6:45PM EDT by NWS Charleston WV |
| Expires | 2026-09-21T18:48:00-04:00 |
| SenderName | NWS Charleston WV |
| HasExactCoords | true |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | 19 E Vansant |
| Spc County | Buchanan |
| Spc State | VA |
| Spc Comments | Tree down blocking the road. (RLX) |
| Iem TypeSummary | D |
| Iem City | 19 E Vansant |
| Iem County | Buchanan |
| Iem State | VA |
| Iem Wfo | RLX |
| Iem Remark | Tree down blocking the road. |
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.
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