Right now
The most recent data we hold from NOAA arrived 8 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 04:00 UTC. It is kept here as a record.
No stronger detection stands among the 61 recorded within 20 km of this point since 16 March 2026 — 12 others scored the same. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued May 24 at 10:10PM EDT until May 25 at 12:00AM EDT by NWS Pittsburgh PA
How we know
7 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 | 0.69/1 |
| Coordinates | 38.7660, -80.9144 |
| Nearest City | Clarksburg (76 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-05-25T02:10:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.72ca4fbc19e8ecb443fc4b2f2bdc775d |
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: 2026-05-25T02:10:00.000Z.
First archived: 2026-05-25T03:18:18.957Z. 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 | Allegheny, PA; Butler, PA; Harrison, WV; Lewis, WV; Gilmer, WV; Lewis, WV and 4 more areas |
| Headline | Flash Flood Warning issued May 24 at 10:10PM EDT until May 25 at 12:00AM EDT by NWS Pittsburgh PA |
| Expires | 2026-05-25T00:00:00-04:00 |
| SenderName | NWS Pittsburgh PA |
| HasExactCoords | true |
| MergedCount | 7 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.72ca4fbc19e8ecb443fc4b2f2bdc775da287b8fe.001.1","noaa_urn:oid:2.49.0.1.840.0.6138b48d4cd3e41b3905eab8bcec755a0e4fc402.001.1","noaa_urn:oid:2.49.0.1.840.0.1af170b701d5b13e88dfccf42984779ea3a2c421.001.1","noaa_urn:oid:2.49.0.1.840.0.88e8b50325f5d62c56bbe54730d827b9e313b61d.001.1","noaa_urn:oid:2.49.0.1.840.0.d48d660ed2320436e2b512370a0c37aa7a00c7e4.001.1","noaa_urn:oid:2.49.0.1.840.0.f288a128fdc168e48e855c0cc50ba8c110805cae.001.1","noaa_urn:oid:2.49.0.1.840.0.b746af59214237ef0cf4aeb568c6ae031b75bf48.001.1"] |
| Iem TypeSummary | E |
| Iem City | 1 WSW Clarksburg |
| Iem County | Harrison |
| Iem State | WV |
| Iem Wfo | RLX |
| Iem Remark | Water a foot deep in a residential basement. |
| MergedSources | [{"id":"iem_F_39.020_-80.690_1779674700000","source":"iem","severity":"low","severityValue":25,"timestamp":1779674700000,"latitude":39.02,"longitude":-80.69},{"id":"iem_F_38.860_-80.940_1779671700000","source":"iem","severity":"low","severityValue":25,"timestamp":1779671700000,"latitude":38.86,"longitude":-80.94},{"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_38.870_-80.830_1779671820000","source":"iem","severity":"low","severityValue":25,"timestamp":1779671820000,"latitude":38.87,"longitude":-80.83},{"id":"iem_R_39.180_-80.370_1779674400000","source":"iem","severity":"low","severityValue":25,"timestamp":1779674400000,"latitude":39.18,"longitude":-80.37},{"id":"iem_E_39.270_-80.360_1779674220000","source":"iem","severity":"low","severityValue":25,"timestamp":1779674220000,"latitude":39.27,"longitude":-80.36}] |
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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