Right now
The most recent data we hold from NOAA arrived 2 hours 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 17:30 UTC. It is kept here as a record.
What the source measured
NOAA reported: Flood Warning issued September 20 at 8:38AM EDT until September 20 at 1:30PM EDT by NWS Wilmington OH
Urban PEI: 1,186,504 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 46 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) | 46 / 100 |
| Legacy data-support index | 0.86/1 |
| Coordinates | 39.7256, -83.4905 |
| Nearest City | Springfield (35 km) |
| Urban exposure index (PEI) | 1.2M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-20T14:10:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.4a531e80488b73cdd26b3d8555e6f7ea7cc2fa28.001.1 |
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: 2026-09-20T14:10:00.000Z.
First archived: 2026-09-20T12:42:50.646Z. 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 | Fairfield, OH; Hocking, OH; Pickaway, OH; Ross, OH; Calhoun, WV; Doddridge, WV; Gilmer, WV; Jackson, WV; Ritchie, WV; Roane, WV; Wirt, WV; Wood, WV; Gallia, OH; Jackson, OH; Lawrence, OH; Meigs, OH; Vinton, OH; Jackson, WV; Mason, WV; Putnam, WV and 12 more areas |
| Headline | Flood Warning issued September 20 at 8:38AM EDT until September 20 at 1:30PM EDT by NWS Wilmington OH |
| Expires | 2026-09-20T13:30:00-04:00 |
| SenderName | NWS Wilmington OH |
| HasExactCoords | true |
| MergedCount | 16 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.4a531e80488b73cdd26b3d8555e6f7ea7cc2fa28.001.1","noaa_urn:oid:2.49.0.1.840.0.f582d873a8f97f685edbbf37eaf4bce2703a7c2d.001.1","noaa_urn:oid:2.49.0.1.840.0.a72cff874b96bd315983011093558c81d4e74ce5.001.1","noaa_urn:oid:2.49.0.1.840.0.5153ceee0680d3b0551db724f98cb590d74b5263.001.1","noaa_urn:oid:2.49.0.1.840.0.a590c345eef217deffba506b380cd6335b815501.001.1","noaa_urn:oid:2.49.0.1.840.0.22fad48a9449e922b26c18e8a60933e2f33575dc.001.1","noaa_urn:oid:2.49.0.1.840.0.cc024079a566c0b8d0eafaafdf6262076078df46.001.1","noaa_urn:oid:2.49.0.1.840.0.cc024079a566c0b8d0eafaafdf6262076078df46.002.1","noaa_urn:oid:2.49.0.1.840.0.6305866f3cd233f48c62be0fa33e6c73c30e3440.001.1","noaa_urn:oid:2.49.0.1.840.0.ffe302485ecefee7fb603bb2c67a168bace9fe94.001.1","noaa_urn:oid:2.49.0.1.840.0.852f6fdb412ff4c4f1870fe91515eebed15b3556.001.1","noaa_urn:oid:2.49.0.1.840.0.baff7ba7dd73092bc70d7dd65caeb6f048738bfa.001.1","noaa_urn:oid:2.49.0.1.840.0.b24224ce15daf3c1e095d41e13dc863d5fb5798d.001.1","noaa_urn:oid:2.49.0.1.840.0.b24224ce15daf3c1e095d41e13dc863d5fb5798d.002.1","noaa_urn:oid:2.49.0.1.840.0.8f74390c7f4443d81c157f6eb1ded97cd821f5f0.001.1","noaa_urn:oid:2.49.0.1.840.0.aaf4d5280c2ca42ed2ab5f0b82f89b288e77e583.001.1"] |
| Iem TypeSummary | F |
| Iem City | 4 ENE Kingston |
| Iem County | Pickaway |
| Iem State | OH |
| Iem Wfo | ILN |
| Iem Remark | Water evacuations underway since about 2am. |
| MergedSources | [{"id":"iem_F_39.500_-82.850_1789906920000","source":"iem","severity":"low","severityValue":25,"timestamp":1789906920000,"latitude":39.5,"longitude":-82.85}] |
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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