Right now
The most recent data we hold from NOAA arrived 3 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 <1 km from here.
This alert expired on 10 September 2026 at 11:48 UTC. It is kept here as a record.
It is the 16th strongest of the 46 detections recorded within 20 km of this point since 16 March 2026. 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 September 10 at 7:38AM EDT until September 10 at 7:45AM EDT by NWS Charleston WV
An estimated 41,517 people live within 50 km of this point.
Nearby, since 16 March 2026
- May 19, 2026 · score 34 · 13.1 km
- August 7, 2026 · score 43 · 13.2 km
- June 18, 2026 · score 67 · 19.9 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 28 out of 100, at 80 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
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) | 28 / 100 |
| Our confidence | 80% |
| Coordinates | 38.9117, -82.6938 |
| Nearest City | Portsmouth (33 km) |
| Population Exposed | 41.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-10T11:38:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.6081eb72202c0b60f96d9cc8c474b9254211599a.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Gallia, OH; Jackson, OH; Lawrence, OH; Gallia, OH; Meigs, OH; Jackson, WV; Mason, WV; Gallia, OH; Jackson, OH; Meigs, OH; Vinton, OH and 1 more areas |
| Headline | Flash Flood Warning issued September 10 at 7:38AM EDT until September 10 at 7:45AM EDT by NWS Charleston WV |
| Expires | 2026-09-10T07:48:00-04:00 |
| SenderName | NWS Charleston WV |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.6081eb72202c0b60f96d9cc8c474b9254211599a.001.1","noaa_urn:oid:2.49.0.1.840.0.1a317dcc5c257c83aa428d992daf8e7f55e5e707.001.1","noaa_urn:oid:2.49.0.1.840.0.57afec377a495e762f83dfee2e01a3271a27582c.001.1","noaa_urn:oid:2.49.0.1.840.0.155414184bcd7f8b7121abcc3bec4b3e8fd6ce20.001.1"] |
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.
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