Severe Weather in United States
Right now
The most recent data we hold from NOAA arrived 7 hours ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 13 September 2026 at 05:15 UTC. It is kept here as a record.
It is the 19th strongest of the 52 detections recorded within 20 km of this point since 17 March 2026. The last comparable one was on 6 September 2026. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued September 12 at 11:18PM EDT until September 13 at 1:15AM EDT by NWS Charleston WV
How we know
2 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 v4. 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 | 0.67/1 |
| Coordinates | 38.1387, -80.6465 |
| Nearest City | Beckley (62 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-09-13T03:18:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.cbe1006260301bf7c48844e79adf9e1dbd5f09d3.001.1 |
Physical priority index · v4 (historical). 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: 2026-09-13T03:18:00.000Z.
First archived: 2026-09-13T03:20:05.333Z. 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 | Clay, WV; Kanawha, WV; Roanoke, VA; Braxton, WV; Calhoun, WV; Clay, WV; Gilmer, WV; Lewis, WV; Roane, WV |
| Headline | Flash Flood Warning issued September 12 at 11:18PM EDT until September 13 at 1:15AM EDT by NWS Charleston WV |
| Expires | 2026-09-13T01:15:00-04:00 |
| SenderName | NWS Charleston WV |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.cbe1006260301bf7c48844e79adf9e1dbd5f09d3.001.1","noaa_urn:oid:2.49.0.1.840.0.d46fe17d384718acc4d6356f3c1775c79fe799d3.001.1","noaa_urn:oid:2.49.0.1.840.0.6f462de86e7745b1fcc8fe84f6c060b8c043931d.001.1"] |
| Iem TypeSummary | F |
| Iem City | 3 ENE Flatwoods |
| Iem County | Braxton |
| Iem State | WV |
| Iem Wfo | RLX |
| Iem Remark | High Water on Corley-Caress Spruce Fork. |
| MergedSources | [{"id":"iem_R_38.740_-80.530_1789251300000","source":"iem","severity":"low","severityValue":25,"timestamp":1789251300000,"latitude":38.74,"longitude":-80.53},{"id":"iem_F_38.460_-81.240_1789249200000","source":"iem","severity":"low","severityValue":25,"timestamp":1789249200000,"latitude":38.46,"longitude":-81.24},{"id":"iem_F_38.480_-81.150_1789267200000","source":"iem","severity":"low","severityValue":25,"timestamp":1789267200000,"latitude":38.48,"longitude":-81.15},{"id":"iem_F_38.450_-81.230_1789248600000","source":"iem","severity":"low","severityValue":25,"timestamp":1789248600000,"latitude":38.45,"longitude":-81.23},{"id":"iem_F_38.410_-81.260_1789249500000","source":"iem","severity":"low","severityValue":25,"timestamp":1789249500000,"latitude":38.41,"longitude":-81.26},{"id":"iem_F_38.740_-80.530_1789249200000","source":"iem","severity":"low","severityValue":25,"timestamp":1789249200000,"latitude":38.74,"longitude":-80.53},{"id":"iem_F_38.780_-80.520_1789248600000","source":"iem","severity":"low","severityValue":25,"timestamp":1789248600000,"latitude":38.78,"longitude":-80.52},{"id":"iem_E_38.700_-80.550_1789248600000","source":"iem","severity":"low","severityValue":25,"timestamp":1789248600000,"latitude":38.7,"longitude":-80.55},{"id":"iem_F_38.740_-80.590_1789249200000","source":"iem","severity":"low","severityValue":25,"timestamp":1789249200000,"latitude":38.74,"longitude":-80.59}] |
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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