Right now
The most recent data we hold from NOAA arrived 5 minutes ago, and this point is in it.
22 other detections within 20 km in the last 24 hours, the nearest 5 km from here.
This alert is in force until 11 September 2026, 04:15 UTC.
It is the 4th strongest of the 86 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 10 September 2026. 34 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued September 10 at 8:09PM EDT until September 11 at 12:15AM EDT by NWS Charleston WV
An estimated 46,771 people live within 50 km of this point.
Nearby, since 16 March 2026
- September 11, 2026 · score 16 · 7.5 km
- May 19, 2026 · score 34 · 12.7 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 28 out of 100, at 86 % 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 | 86% |
| Coordinates | 39.0864, -82.5545 |
| Nearest City | Chillicothe (46 km) |
| Population Exposed | 46.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-11T00:09:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.ae9a32ab4c0034293660daaeaa3bf4a3d46e51bb.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Jackson, OH; Meigs, OH; Vinton, OH |
| Headline | Flash Flood Warning issued September 10 at 8:09PM EDT until September 11 at 12:15AM EDT by NWS Charleston WV |
| Expires | 2026-09-11T00:15:00-04:00 |
| SenderName | NWS Charleston WV |
| HasExactCoords | true |
| Iem TypeSummary | R |
| Iem Magnitude | 5.84 |
| Iem Unit | Inch |
| Iem City | 3 SE Jackson |
| Iem County | Jackson |
| Iem State | OH |
| Iem Wfo | RLX |
| Iem Remark | Most of this occurred in a 5 hour period. |
| MergedSources | [{"id":"iem_R_39.010_-82.600_1789064400000","source":"iem","severity":"low","severityValue":25,"timestamp":1789064400000,"latitude":39.01,"longitude":-82.6}] |
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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