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.
11 other detections within 20 km in the last 24 hours, the nearest <1 km from here.
This alert expired on 23 September 2026 at 18:15 UTC. It is kept here as a record.
It is the 39th strongest of the 128 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued September 23 at 11:15AM EDT until September 23 at 2:15PM EDT by NWS Charleston WV
Urban PEI: 358,395 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- July 6, 2026 · score 43 · 6.5 km
- September 5, 2026 · score 37 · 10.1 km
- September 4, 2026 · score 37 · 10.1 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 37 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) | 37 / 100 |
| Legacy data-support index | 0.82/1 |
| Coordinates | 38.4414, -82.2343 |
| Nearest City | Huntington (19 km) |
| Urban exposure index (PEI) | 358.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-23T15:15:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.680ac60741ea536fa959a20c459b604f91d98267.001.1 |
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: 2026-09-23T15:15:00.000Z.
First archived: 2026-09-23T15:23:03.316Z. 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 | Gallia, OH; Mason, WV; Lawrence, OH; Wayne, WV; Lincoln, WV; Putnam, WV |
| Headline | Flash Flood Warning issued September 23 at 11:15AM EDT until September 23 at 2:15PM EDT by NWS Charleston WV |
| Expires | 2026-09-23T14:15:00-04:00 |
| SenderName | NWS Charleston WV |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.680ac60741ea536fa959a20c459b604f91d98267.001.1","noaa_urn:oid:2.49.0.1.840.0.0c5f188ddcbb1b1cc5f22524709ad2b513217dd7.001.1","noaa_urn:oid:2.49.0.1.840.0.962aaf75f4bc641343fc8781e461604701e9960c.001.1"] |
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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