This alert expired on 5 September 2026 at 01:00 UTC. It is kept here as a record.
It is the 29th strongest of the 120 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued September 4 at 3:57PM EDT until September 4 at 9:00PM EDT by NWS Pittsburgh PA
An estimated 16,152 people live within 50 km of this point.
Nearby, since 16 March 2026
- August 10, 2026 · score 34 · 0.0 km
- June 15, 2026 · score 34 · 0.0 km
- June 14, 2026 · score 34 · 0.0 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 28 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 v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 28 / 100 |
| Our confidence | 90% |
| Coordinates | 38.9000, -80.5000 |
| Nearest City | Clarksburg (44 km) |
| Population Exposed | 16.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-04T19:57:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.92662e62d164756330b73ab373b65202ce195640.002.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Marion, WV; Monongalia, WV; Preston, WV; Tucker, WV |
| Headline | Severe Thunderstorm Watch issued September 4 at 3:57PM EDT until September 4 at 9:00PM EDT by NWS Pittsburgh PA |
| Expires | 2026-09-04T21:00:00-04:00 |
| SenderName | NWS Pittsburgh PA |
| HasExactCoords | false |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | 7 E Holly River State |
| Spc County | Randolph |
| Spc State | WV |
| Spc Comments | Approximately 330 customers without power. (RLX) |
| Iem TypeSummary | D |
| Iem City | 3 WSW Buckhannon |
| Iem County | Upshur |
| Iem State | WV |
| Iem Wfo | RLX |
| Iem Remark | Tree down blocking Brushy Fork Rd. |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 28/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.