Right now
The most recent data we hold from NOAA arrived 2 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
7 other detections within 20 km in the last 24 hours, the nearest 2 km from here.
This alert expired on 23 September 2026 at 18:45 UTC. It is kept here as a record.
It is the 35th strongest of the 159 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued September 23 at 1:11PM EDT until September 23 at 2:45PM EDT by NWS Charleston WV
Urban PEI: 46,838 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- September 24, 2026 · score 28 · 7.8 km
- June 10, 2026 · score 39 · 9.9 km
- July 5, 2026 · score 39 · 11.8 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 28 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) | 28 / 100 |
| Legacy data-support index | 0.86/1 |
| Coordinates | 38.4504, -81.8349 |
| Nearest City | Charleston (21 km) |
| Urban exposure index (PEI) | 46.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-23T17:11:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.a582ed76b697f674998ffcb8c5b2dc3fc4f6094b.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: 2026-09-23T17:11:00.000Z.
First archived: 2026-09-23T17:17:06.514Z. Material modification: 2026-09-23T18:05:57.729Z.
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 | Cabell, WV; Wayne, WV; Gilmer, WV; Boone, WV; Lincoln, WV and 1 more areas |
| Headline | Flash Flood Warning issued September 23 at 1:11PM EDT until September 23 at 2:45PM EDT by NWS Charleston WV |
| Expires | 2026-09-23T14:45:00-04:00 |
| SenderName | NWS Charleston WV |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.a582ed76b697f674998ffcb8c5b2dc3fc4f6094b.001.1","noaa_urn:oid:2.49.0.1.840.0.279878c78fe2ce18bf13a7b66784419dd3129440.001.1","noaa_urn:oid:2.49.0.1.840.0.b24e4ae2a99c83d9e208ca575c86903b67583b5b.001.1","noaa_urn:oid:2.49.0.1.840.0.bb673c3d4c12b7a81016a91f7d723c842e6db3b2.001.1"] |
| Iem TypeSummary | F |
| Iem City | 10 W Buffalo |
| Iem County | Mason |
| Iem State | WV |
| Iem Wfo | RLX |
| Iem Remark | Water over Huntington Road. |
| MergedSources | [{"id":"iem_F_38.420_-82.490_1790185200000","source":"iem","severity":"low","severityValue":25,"timestamp":1790185200000,"latitude":38.42,"longitude":-82.49},{"id":"iem_F_38.210_-82.360_1790184600000","source":"iem","severity":"low","severityValue":25,"timestamp":1790184600000,"latitude":38.21,"longitude":-82.36},{"id":"iem_F_38.620_-82.170_1790179800000","source":"iem","severity":"low","severityValue":25,"timestamp":1790179800000,"latitude":38.62,"longitude":-82.17}] |
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.
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