Right now
The most recent data we hold from NOAA arrived 48 minutes ago, and this point is in it.
This alert is in force until 22 September 2026, 18:00 UTC.
What the source measured
NOAA reported: Flood Warning issued September 22 at 5:21AM EDT until September 22 at 2:00PM EDT by NWS Wilmington OH
Urban PEI: 25,044 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 28 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) | 28 / 100 |
| Legacy data-support index | 0.86/1 |
| Coordinates | 39.2780, -82.2735 |
| Nearest City | Athens (16 km) |
| Urban exposure index (PEI) | 25.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-22T09:21:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.b0eb22816eb396a57c9c1246e4282f8cee0fd690.001.1 |
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: 2026-09-22T09:21:00.000Z.
First archived: 2026-09-22T09:26:50.571Z. Material modification: 2026-09-22T11:04:20.379Z.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2026-09-22T11:31:21.988Z · data_change
Index 28 → 28; severity medium → medium; version 5 → 5.
2026-09-22T11:25:58.147Z · data_change
Index 28 → 28; severity medium → medium; version 5 → 5.
2026-09-22T11:20:33.225Z · data_change
Index 28 → 28; severity medium → medium; version 5 → 5.
2026-09-22T11:15:09.525Z · data_change
Index 28 → 28; severity medium → medium; version 5 → 5.
2026-09-22T11:09:44.944Z · data_change
Index 28 → 28; severity medium → medium; version 5 → 5.
2026-09-22T11:04:20.379Z · data_change
Index 32 → 28; severity medium → medium; version 5 → 5.
2026-09-22T10:42:46.544Z · data_change
Index 32 → 32; severity medium → medium; version 5 → 5.
2026-09-22T10:37:21.577Z · data_change
Index 32 → 32; severity medium → medium; version 5 → 5.
2026-09-22T10:31:57.943Z · data_change
Index 32 → 32; severity medium → medium; version 5 → 5.
2026-09-22T10:26:33.346Z · data_change
Index 32 → 32; severity medium → medium; version 5 → 5.
2026-09-22T10:21:09.172Z · data_change
Index 32 → 32; severity medium → medium; version 5 → 5.
2026-09-22T10:15:46.064Z · data_change
Index 32 → 32; severity medium → medium; version 5 → 5.
2026-09-22T10:10:22.915Z · data_change
Index 32 → 32; severity medium → medium; version 5 → 5.
2026-09-22T10:04:56.683Z · data_change
Index 32 → 32; severity medium → medium; version 5 → 5.
2026-09-22T09:54:11.831Z · data_change
Index 32 → 32; severity medium → medium; version 5 → 5.
2026-09-22T09:48:43.715Z · data_change
Index 32 → 32; severity medium → medium; version 5 → 5.
2026-09-22T09:43:19.943Z · data_change
Index 32 → 32; severity medium → medium; version 5 → 5.
2026-09-22T09:37:56.027Z · data_change
Index 32 → 32; severity medium → medium; version 5 → 5.
2026-09-22T09:32:29.354Z · data_change
Index 32 → 32; severity medium → medium; version 5 → 5.
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Hocking, OH; Washington, OH; Pike, OH; Scioto, OH and 4 more areas |
| Headline | Flood Warning issued September 22 at 5:21AM EDT until September 22 at 2:00PM EDT by NWS Wilmington OH |
| Expires | 2026-09-22T14:00:00-04:00 |
| SenderName | NWS Wilmington OH |
| HasExactCoords | true |
| MergedCount | 7 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b0eb22816eb396a57c9c1246e4282f8cee0fd690.001.1","noaa_urn:oid:2.49.0.1.840.0.6926d5add5f7acbac8b3dcd914466f5a6a9248df.001.1","noaa_urn:oid:2.49.0.1.840.0.f5841cf41191af1c77dc3244c1e72e199c6619b2.001.1","noaa_urn:oid:2.49.0.1.840.0.d3b3833d7f365f11d11d26585a23a45818f27128.001.1","noaa_urn:oid:2.49.0.1.840.0.a0fa716c294a6d5d6723a5bba707cfc7c9ea122a.001.1","noaa_urn:oid:2.49.0.1.840.0.e74664451472e87c2de66b1be57edeebd5ace863.001.1","noaa_urn:oid:2.49.0.1.840.0.33d31e63f8c08ca5e59412c8c22773aa37a83153.001.1"] |
| Iem TypeSummary | E |
| Iem City | 1 S Nelsonville |
| Iem County | Athens |
| Iem State | OH |
| Iem Wfo | RLX |
| Iem Remark | High water on ST RTE 691 / HOCKING PKWY, NELSONVILLE, OH. |
| MergedSources | [{"id":"iem_E_39.450_-82.230_1790072040000","source":"iem","severity":"low","severityValue":25,"timestamp":1790072040000,"latitude":39.45,"longitude":-82.23}] |
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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