This alert expired on 3 September 2026 at 13:00 UTC. It is kept here as a record.
It is the 30th strongest of the 63 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 3 at 8:44AM EDT until September 3 at 9:00AM EDT by NWS Pittsburgh PA
An estimated 40,100 people live within 50 km of this point.
Nearby, since 15 March 2026
- August 10, 2026 · score 34 · 10.5 km
- June 6, 2026 · score 43 · 13.8 km
- August 6, 2026 · score 39 · 17.8 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 28 out of 100, at 92 % 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 | 92% |
| Coordinates | 40.1614, -79.2610 |
| Nearest City | Johnstown (34 km) |
| Population Exposed | 40.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-03T12:44:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.0c5a85629da489385761ced76e5f947f1abc0734.002.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Westmoreland, PA |
| Headline | Severe Thunderstorm Warning issued September 3 at 8:44AM EDT until September 3 at 9:00AM EDT by NWS Pittsburgh PA |
| Expires | 2026-09-03T09:00:00-04:00 |
| SenderName | NWS Pittsburgh PA |
| HasExactCoords | true |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | Adamsburg |
| Spc County | Westmoreland |
| Spc State | PA |
| Spc Comments | Wires down across the road. Time estimated via radar. (PBZ) |
| Iem TypeSummary | D |
| Iem City | North Washington |
| Iem County | Westmoreland |
| Iem State | PA |
| Iem Wfo | PBZ |
| Iem Remark | Trees and wires down in North Washington Township. Time estimated via radar. |
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.