Right now
The most recent data we hold from NOAA arrived 4 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
This alert expired on 20 September 2026 at 23:00 UTC. It is kept here as a record.
What the source measured
NOAA reported: Flood Warning issued September 20 at 3:45PM EDT until September 20 at 7:00PM EDT by NWS Charleston WV
Urban PEI: 56,035 within a heuristic 50 km radius; not unique people.
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 32 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) | 32 / 100 |
| Legacy data-support index | 0.86/1 |
| Coordinates | 39.5747, -81.6159 |
| Nearest City | Parkersburg (34 km) |
| Urban exposure index (PEI) | 56.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-20T19:45:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.dcdd656478e6eb559e15aa45d3c3c5c3a1432cdb.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: 2026-09-20T19:45:00.000Z.
First archived: 2026-09-20T19:48:36.319Z. 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 | Flood Warning |
| Urgency | Expected |
| Certainty | Likely |
| AreaDesc | Gallia, OH; Meigs, OH; Vinton, OH; Jackson, WV; Mason, WV; Putnam, WV; Athens, OH; Gallia, OH; Meigs, OH; Washington, OH; Jackson, WV; Mason, WV; Wood, WV; Belmont, OH; Coshocton, OH; Guernsey, OH; Harrison, OH; Jefferson, OH; Tuscarawas, OH and 4 more areas |
| Headline | Flood Warning issued September 20 at 3:45PM EDT until September 20 at 7:00PM EDT by NWS Charleston WV |
| Expires | 2026-09-20T19:00:00-04:00 |
| SenderName | NWS Charleston WV |
| HasExactCoords | true |
| MergedCount | 7 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.dcdd656478e6eb559e15aa45d3c3c5c3a1432cdb.001.1","noaa_urn:oid:2.49.0.1.840.0.9aa3806369424eb128e631bcf2a7c46dcb4f901a.001.1","noaa_urn:oid:2.49.0.1.840.0.9935ab95d788b85c8a309e2b9687e98d55a2f3ba.001.1","noaa_urn:oid:2.49.0.1.840.0.cdddd666475b4c260bf22d8b2e8ef92e5dc7cc57.001.1","noaa_urn:oid:2.49.0.1.840.0.bcf56c1d49e957c57c7db04ef21746165184a6ef.001.1","noaa_urn:oid:2.49.0.1.840.0.017328e346b7c2a21141ee823c9e1c030dc766b3.001.1","noaa_urn:oid:2.49.0.1.840.0.14770dcf94181f2a2b206fc8cb229e4f884213ab.001.1"] |
| Iem TypeSummary | E |
| Iem City | 5 NW Antrim |
| Iem County | Guernsey |
| Iem State | OH |
| Iem Wfo | PBZ |
| Iem Remark | Social media video of flooding along Turkey run near Turkey Run Road and Tanglewood Lane. |
| MergedSources | [{"id":"iem_F_40.180_-81.440_1789914960000","source":"iem","severity":"low","severityValue":25,"timestamp":1789914960000,"latitude":40.18,"longitude":-81.44},{"id":"iem_E_40.170_-81.410_1789921800000","source":"iem","severity":"low","severityValue":25,"timestamp":1789921800000,"latitude":40.17,"longitude":-81.41}] |
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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