Right now
The most recent data we hold from NOAA arrived 20 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
6 other detections within 20 km in the last 24 hours, the nearest 3 km from here.
This alert expired on 25 May 2026 at 05:30 UTC. It is kept here as a record.
It is the 2nd strongest of the 138 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 20 May 2026. 9 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued May 24 at 9:25PM EDT until May 25 at 1:30AM EDT by NWS Charleston WV
An estimated 16,152 people live within 50 km of this point.
Nearby, since 16 March 2026
- May 13, 2026 · score 34 · 9.1 km
- July 22, 2026 · score 40 · 11.3 km
- September 11, 2026 · score 28 · 23.9 km
How we know
Confirmed by 7 independent sources, including NOAA.
Our own score for this event is 34 out of 100, at 90 % 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) | 34 / 100 |
| Our confidence | 90% |
| Coordinates | 39.0865, -80.5004 |
| Nearest City | Clarksburg (26 km) |
| Population Exposed | 16.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-25T01:25:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.6138b48d4cd3e41b3905eab8bcec755a |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Harrison, WV; Lewis, WV; Gilmer, WV; Lewis, WV |
| Headline | Flash Flood Warning issued May 24 at 9:25PM EDT until May 25 at 1:30AM EDT by NWS Charleston WV |
| Expires | 2026-05-25T01:30:00-04:00 |
| SenderName | NWS Charleston WV |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.6138b48d4cd3e41b3905eab8bcec755a0e4fc402.001.1","noaa_urn:oid:2.49.0.1.840.0.1af170b701d5b13e88dfccf42984779ea3a2c421.001.1"] |
| 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_39.270_-80.310_1779675660000","source":"iem","severity":"low","severityValue":25,"timestamp":1779675660000,"latitude":39.27,"longitude":-80.31},{"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_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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