Right now
The most recent data we hold from NOAA arrived 3 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 27 May 2026 at 11:47 UTC. It is kept here as a record.
No stronger detection stands among the 190 recorded within 20 km of this point since 16 March 2026 — 46 others scored the same. Another comparable one was recorded here earlier the same day. 16 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued May 27 at 7:37AM EDT until May 27 at 7:45AM EDT by NWS Pittsburgh PA
An estimated 34,885 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 23, 2026 · score 34 · 10.3 km
- May 13, 2026 · score 34 · 14.2 km
How we know
Confirmed by 6 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 | 39.2117, -80.5345 |
| Nearest City | Clarksburg (18 km) |
| Population Exposed | 34.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-27T11:37:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.bc948702b191730fb3e5047f0a4fa564 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Marion, WV; Harrison, WV; Taylor, WV; Jackson, WV; Roane, WV |
| Headline | Flash Flood Warning issued May 27 at 7:37AM EDT until May 27 at 7:45AM EDT by NWS Pittsburgh PA |
| Expires | 2026-05-27T07:47:00-04:00 |
| SenderName | NWS Pittsburgh PA |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.bc948702b191730fb3e5047f0a4fa564727815af.001.1","noaa_urn:oid:2.49.0.1.840.0.ba65c3372be8dde661017300ae008003ae2b5ace.001.1","noaa_urn:oid:2.49.0.1.840.0.919e5b25412f776a9a49bd95f810d5a72ce59b84.001.1"] |
| Iem TypeSummary | E |
| Iem City | 3 ESE Fairmont |
| Iem County | Marion |
| Iem State | WV |
| Iem Wfo | PBZ |
| Iem Remark | Intersection of Hopewell and Ranch roads closed due to flooding. |
| MergedSources | [{"id":"iem_F_39.440_-80.170_1779875340000","source":"iem","severity":"low","severityValue":25,"timestamp":1779875340000,"latitude":39.44,"longitude":-80.17},{"id":"iem_F_39.450_-80.130_1779878160000","source":"iem","severity":"low","severityValue":25,"timestamp":1779878160000,"latitude":39.45,"longitude":-80.13},{"id":"iem_F_39.470_-80.090_1779876720000","source":"iem","severity":"low","severityValue":25,"timestamp":1779876720000,"latitude":39.47,"longitude":-80.09},{"id":"iem_F_39.480_-80.120_1779877140000","source":"iem","severity":"low","severityValue":25,"timestamp":1779877140000,"latitude":39.48,"longitude":-80.12},{"id":"iem_E_39.470_-80.090_1779876720000","source":"iem","severity":"low","severityValue":25,"timestamp":1779876720000,"latitude":39.47,"longitude":-80.09}] |
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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