Right now
The most recent data we hold from NOAA arrived 29 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
15 other detections within 20 km in the last 24 hours, the nearest 8 km from here.
This alert expired on 25 May 2026 at 02:15 UTC. It is kept here as a record.
No stronger detection stands among the 110 recorded within 20 km of this point since 16 March 2026 — 22 others scored the same. The last comparable one was on 24 May 2026. 8 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued May 24 at 8:07PM EDT until May 24 at 10:15PM EDT by NWS Pittsburgh PA
An estimated 56,035 people live within 50 km of this point.
Nearby, since 16 March 2026
- September 5, 2026 · score 32 · 11.0 km
- May 25, 2026 · score 39 · 18.4 km
- September 10, 2026 · score 32 · 18.5 km
How we know
Confirmed by 9 independent sources, including NOAA.
Our own score for this event is 39 out of 100, at 89 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
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) | 39 / 100 |
| Our confidence | 89% |
| Coordinates | 39.1615, -81.9030 |
| Nearest City | Athens (25 km) |
| Population Exposed | 56.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-25T00:07:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.3312fe1f825a40f41762085dbe7136d8 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Guernsey, OH; Harrison, OH; Muskingum, OH; Noble, OH; Columbiana, OH; Armstrong, PA; Beaver, PA; Butler, PA; Clarion, PA; Lawrence, PA; Mercer, PA; Venango, PA; Athens, OH; Morgan, OH; Perry, OH and 11 more areas |
| Headline | Flash Flood Warning issued May 24 at 8:07PM EDT until May 24 at 10:15PM EDT by NWS Pittsburgh PA |
| Expires | 2026-05-24T22:15:00-04:00 |
| SenderName | NWS Pittsburgh PA |
| HasExactCoords | true |
| MergedCount | 14 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.3312fe1f825a40f41762085dbe7136d8c0cb5742.001.1","noaa_urn:oid:2.49.0.1.840.0.b5dd9de3cdbfda0ee8a07463d64201dc344c9ed7.001.1","noaa_urn:oid:2.49.0.1.840.0.5b164e3e5261909b24d9de00506b0883abb38ba5.001.1","noaa_urn:oid:2.49.0.1.840.0.f288a128fdc168e48e855c0cc50ba8c110805cae.001.1","noaa_urn:oid:2.49.0.1.840.0.70b4d9a8d1e95cfc2174836953f302cadf798b52.002.1","noaa_urn:oid:2.49.0.1.840.0.b746af59214237ef0cf4aeb568c6ae031b75bf48.001.1","noaa_urn:oid:2.49.0.1.840.0.d7065a8937771ff2f81c69234ac2eb009762a18d.001.1","noaa_urn:oid:2.49.0.1.840.0.f3605d6f34903b52f1ec1c3bcddf2f73d59f49a6.001.1","noaa_urn:oid:2.49.0.1.840.0.f1fda1a85ad37e9c273f51a7e52691b394735965.001.1","noaa_urn:oid:2.49.0.1.840.0.1236879c6c9aa38d9b168bc7d2e9cca414cf1026.001.1","noaa_urn:oid:2.49.0.1.840.0.4a53f4905534919fdf611d43c04298c92f0b8ff7.001.1","noaa_urn:oid:2.49.0.1.840.0.df20709ac9983f31d912e14f47aed83f7f822012.001.1","noaa_urn:oid:2.49.0.1.840.0.d884133e589e578d4dcf55f2d281e6d0bbe7bdcc.001.1","noaa_urn:oid:2.49.0.1.840.0.f5870ad186252d909efdfad1fe2ffd2cf2ebaf8d.001.1"] |
| Iem TypeSummary | R |
| Iem Magnitude | 0.75 |
| Iem Unit | Inch |
| Iem City | Middleport |
| Iem County | Meigs |
| Iem State | OH |
| Iem Wfo | RLX |
| Iem Remark | Reported by Trained Spotter. |
| MergedSources | [{"id":"iem_R_38.760_-81.760_1779665820000","source":"iem","severity":"low","severityValue":25,"timestamp":1779665820000,"latitude":38.76,"longitude":-81.76},{"id":"iem_F_39.790_-82.000_1779663600000","source":"iem","severity":"low","severityValue":25,"timestamp":1779663600000,"latitude":39.79,"longitude":-82},{"id":"iem_R_39.050_-82.640_1779655860000","source":"iem","severity":"low","severityValue":25,"timestamp":1779655860000,"latitude":39.05,"longitude":-82.64},{"id":"iem_F_39.590_-82.090_1779658380000","source":"iem","severity":"low","severityValue":25,"timestamp":1779658380000,"latitude":39.59,"longitude":-82.09},{"id":"iem_E_39.710_-82.290_1779656340000","source":"iem","severity":"low","severityValue":25,"timestamp":1779656340000,"latitude":39.71,"longitude":-82.29},{"id":"iem_E_39.780_-82.090_1779658560000","source":"iem","severity":"low","severityValue":25,"timestamp":1779658560000,"latitude":39.78,"longitude":-82.09},{"id":"iem_F_39.810_-82.000_1779664680000","source":"iem","severity":"low","severityValue":25,"timestamp":1779664680000,"latitude":39.81,"longitude":-82},{"id":"iem_R_39.000_-82.050_1779664080000","source":"iem","severity":"low","severityValue":25,"timestamp":1779664080000,"latitude":39,"longitude":-82.05}] |
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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