Right now
The most recent data we hold from NOAA arrived 2 minutes ago, and this point is in it.
This alert is in force until 22 September 2026, 04:00 UTC.
What the source measured
NOAA reported: Flood Warning issued September 21 at 5:31PM EDT until September 22 at 12:00AM EDT by NWS Charleston WV
Urban PEI: 1,222,381 within a heuristic 50 km radius; not unique people.
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
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 | 0.80/1 |
| Coordinates | 39.6993, -82.7053 |
| Nearest City | Lancaster (9 km) |
| Urban exposure index (PEI) | 1.2M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-21T21:31:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.7c004b6358407e1f16a729d51c3ed4ee77e27ea6.001.1 |
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: 2026-09-21T21:31:00.000Z.
First archived: 2026-09-21T21:36:16.932Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2026-09-21T22:14:31.881Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-21T22:09:04.431Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-21T21:58:12.055Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-21T21:47:18.101Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-21T21:41:53.227Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Expected |
| Certainty | Likely |
| AreaDesc | Athens, OH; Morgan, OH; Vinton, OH; Washington, OH; Washington, OH; Noble, OH and 13 more areas |
| Headline | Flood Warning issued September 21 at 5:31PM EDT until September 22 at 12:00AM EDT by NWS Charleston WV |
| Expires | 2026-09-22T00:00:00-04:00 |
| SenderName | NWS Charleston WV |
| HasExactCoords | true |
| MergedCount | 19 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.7c004b6358407e1f16a729d51c3ed4ee77e27ea6.001.1","noaa_urn:oid:2.49.0.1.840.0.5115f76e7910bb5528cdb771bb5297ea7c7e11fa.001.1","noaa_urn:oid:2.49.0.1.840.0.bff3514709a346ccfcda7b7168a8b25164cff9f6.001.1","noaa_urn:oid:2.49.0.1.840.0.64c8c8648ce78a70b68b407ce53e4697f29697ba.001.1","noaa_urn:oid:2.49.0.1.840.0.dd489d38e183d31bdb4f2914260d21648097ed6e.001.1","noaa_urn:oid:2.49.0.1.840.0.69fed6c3d3e27186b00269828c5a75799afa894a.001.1","noaa_urn:oid:2.49.0.1.840.0.cc6ed4d102f3c264f333ebff70f8561186456eb8.001.1","noaa_urn:oid:2.49.0.1.840.0.879989beb5d1e22cad5eddcc35914e922847bde9.001.1","noaa_urn:oid:2.49.0.1.840.0.71ecbb952802148ddc44ecae3c1c29cfe0feea9b.001.1","noaa_urn:oid:2.49.0.1.840.0.d6caf8d84029996fecacb36c3e1f5d9006846e0d.001.1","noaa_urn:oid:2.49.0.1.840.0.8e41083396fa4809013b9e079f81e2b6fb38febf.001.1","noaa_urn:oid:2.49.0.1.840.0.5750d8c77b2c5cfaa957111490ed170a4b784c6a.001.1","noaa_urn:oid:2.49.0.1.840.0.b6b29eef0b51533afb762631d36fc5f6c37972bd.001.1","noaa_urn:oid:2.49.0.1.840.0.9ddbbeb7083266a5e4ea36fff33c4fed9439c6b9.002.1","noaa_urn:oid:2.49.0.1.840.0.9ddbbeb7083266a5e4ea36fff33c4fed9439c6b9.004.1","noaa_urn:oid:2.49.0.1.840.0.9ddbbeb7083266a5e4ea36fff33c4fed9439c6b9.001.1","noaa_urn:oid:2.49.0.1.840.0.9ddbbeb7083266a5e4ea36fff33c4fed9439c6b9.003.1","noaa_urn:oid:2.49.0.1.840.0.b90d2004df54fc75c3f3aaf9a39d37800d8c3ddf.001.1","noaa_urn:oid:2.49.0.1.840.0.30a0fa727e55ce1a893ccbd9e1bffd3b04f63ac7.001.1"] |
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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