Right now
The most recent data we hold from NOAA arrived 2 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 25 May 2026 at 00:45 UTC. It is kept here as a record.
It is the 43rd strongest of the 105 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 19 May 2026. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued May 24 at 5:43PM EDT until May 24 at 8:45PM EDT by NWS Jackson KY
Nearby, since 16 March 2026
- August 7, 2026 · score 43 · 12.3 km
- May 24, 2026 · score 39 · 13.8 km
- August 7, 2026 · score 43 · 17.5 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 22 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) | 22 / 100 |
| Legacy data-support index | 0.63/1 |
| Coordinates | 38.9104, -82.3956 |
| Nearest City | Ashland (52 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-05-24T21:43:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.e41a7282579a02f34731003496227006 |
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: 2026-05-24T21:43:00.000Z.
First archived: 2026-05-24T21:55:41.046Z. 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 | Harlan, KY; Knott, KY; Leslie, KY; Letcher, KY; Perry, KY; Gallia, OH; Lawrence, OH; Guernsey, OH; Harrison, OH; Muskingum, OH; Noble, OH and 3 more areas |
| Headline | Flash Flood Warning issued May 24 at 5:43PM EDT until May 24 at 8:45PM EDT by NWS Jackson KY |
| Expires | 2026-05-24T20:45:00-04:00 |
| SenderName | NWS Jackson KY |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.e41a7282579a02f3473100349622700669ce04e0.001.1","noaa_urn:oid:2.49.0.1.840.0.df20709ac9983f31d912e14f47aed83f7f822012.001.1","noaa_urn:oid:2.49.0.1.840.0.034c0cb4a8cbfe9451a309ae7f6e2bf693fcf14c.001.1","noaa_urn:oid:2.49.0.1.840.0.d884133e589e578d4dcf55f2d281e6d0bbe7bdcc.001.1","noaa_urn:oid:2.49.0.1.840.0.f5870ad186252d909efdfad1fe2ffd2cf2ebaf8d.001.1","noaa_urn:oid:2.49.0.1.840.0.5257a4443e8cdc77dbacc02b6e1320b6a3364cae.001.1"] |
| Iem TypeSummary | R |
| Iem Magnitude | 1.58 |
| Iem Unit | Inch |
| Iem City | 1 NW Jackson |
| Iem County | Jackson |
| Iem State | OH |
| Iem Wfo | RLX |
| Iem Remark | Observed since 3 PM. |
| MergedSources | [{"id":"iem_R_39.050_-82.640_1779655860000","source":"iem","severity":"low","severityValue":25,"timestamp":1779655860000,"latitude":39.05,"longitude":-82.64}] |
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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