This alert expired on 9 August 2026 at 05:30 UTC. It is kept here as a record.
It is the 9th strongest of the 58 detections recorded within 20 km of this point since 11 March 2026. Another comparable one was recorded here earlier the same day. 8 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 9 at 1:11AM EDT until August 9 at 1:30AM EDT by NWS Pittsburgh PA
An estimated 174,132 people live within 50 km of this point.
Nearby, since 11 March 2026
- August 11, 2026 · score 43 · 4.3 km
- August 9, 2026 · score 43 · 5.1 km
- August 11, 2026 · score 48 · 6.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 out of 100, at 81 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 43 / 100 |
| Our confidence | 81% |
| Coordinates | 39.9767, -79.9483 |
| Nearest City | Morgantown (39 km) |
| Population Exposed | 174.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-09T05:11:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.eff3a778b52b61dc9cafa374eaebf62649067d21.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Fayette, PA; Greene, PA; Washington, PA |
| Headline | Severe Thunderstorm Warning issued August 9 at 1:11AM EDT until August 9 at 1:30AM EDT by NWS Pittsburgh PA |
| Expires | 2026-08-09T01:30:00-04:00 |
| SenderName | NWS Pittsburgh PA |
| HasExactCoords | true |
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 10 February 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.
Calamity.live data shows a weather event with CalamityScore 43/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.