Right now
The most recent data we hold from NOAA arrived 5 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 28 June 2026 at 07:45 UTC. It is kept here as a record.
It is the 2nd strongest of the 169 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 22 June 2026. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued June 28 at 12:42AM EDT until June 28 at 3:45AM EDT by NWS Wilmington OH
Urban PEI: 30,991 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- June 28, 2026 · score 34 · 0.0 km
- September 3, 2026 · score 28 · 11.2 km
- August 9, 2026 · score 34 · 16.5 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 34 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 v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 34 / 100 |
| Legacy data-support index | 0.79/1 |
| Coordinates | 39.3958, -81.2893 |
| Nearest City | Parkersburg (27 km) |
| Urban exposure index (PEI) | 31.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-28T04:42:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.5a0783292e7256069afb422a54ce851c |
Physical priority index · v1. 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: 2026-06-28T04:42:00.000Z.
First archived: 2026-06-28T04:44:19.740Z. 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 | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Clark, OH; Athens, OH; Morgan, OH; Washington, OH; Barbour, WV; Doddridge, WV; Harrison, WV; Randolph, WV; Taylor, WV and 1 more areas |
| Headline | Flash Flood Warning issued June 28 at 12:42AM EDT until June 28 at 3:45AM EDT by NWS Wilmington OH |
| Expires | 2026-06-28T03:45:00-04:00 |
| SenderName | NWS Wilmington OH |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.5a0783292e7256069afb422a54ce851c0cc46d90.001.1","noaa_urn:oid:2.49.0.1.840.0.cf896cd9f40eb09fdee186f61ea5797cd746225f.001.1","noaa_urn:oid:2.49.0.1.840.0.5ef03c3ba7fdc473fc8a8fa4a885f0ca9cb15dc5.001.1","noaa_urn:oid:2.49.0.1.840.0.ef0d2d58dc96ea3b3de18753aff417f2d421613b.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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