Severe weather near Upper Saint Clair
This alert expired on 2 August 2026 at 22:15 UTC. It is kept here as a record.
No stronger detection stands among the 80 recorded within 20 km of this point since 15 March 2026 — 6 others scored the same. Another comparable one was recorded here earlier the same day. 12 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued August 2 at 5:46PM EDT until August 2 at 6:15PM EDT by NWS Pittsburgh PA
An estimated 690,465 people live within 50 km of this point.
Nearby, since 15 March 2026
- July 5, 2026 · score 48 · 9.8 km
- April 1, 2026 · score 48 · 11.2 km
- August 2, 2026 · score 72 · 11.3 km
How we know
Confirmed by 6 independent sources, including NOAA.
Our own score for this event is 72 out of 100, at 91 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | critical |
| Calamity Score (ours) | 72 / 100 |
| Our confidence | 91% |
| Coordinates | 40.4760, -80.2380 |
| Nearest City | Upper Saint Clair (20 km) |
| Population Exposed | 690.5K within 50 km |
| Impact Tier | catastrophic |
| Timestamp | 2026-08-02T21:46:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.c90951cac14584b43fd4ed25dc560a6f29b3ce74.002.1 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Allegheny, PA |
| Headline | Tornado Warning issued August 2 at 5:46PM EDT until August 2 at 6:15PM EDT by NWS Pittsburgh PA |
| Expires | 2026-08-02T18:15:00-04:00 |
| SenderName | NWS Pittsburgh PA |
| HasExactCoords | true |
| Iem TypeSummary | F |
| Iem City | 1 WSW Steubenville |
| Iem County | Jefferson |
| Iem State | OH |
| Iem Wfo | PBZ |
| Iem Remark | Reports of flooding and a road closure near the intersection of Sinclair Avenue and John Scott Highway. |
| Google News RssFeed | weather |
| Google News SourceName | Pittsburgh Post-Gazette |
| MergedSources | [{"id":"iem_F_40.510_-80.620_1785692400000","source":"iem","severity":"low","severityValue":25,"timestamp":1785692400000,"latitude":40.51,"longitude":-80.62},{"id":"iem_D_40.490_-80.420_1785691680000","source":"iem","severity":"low","severityValue":25,"timestamp":1785691680000,"latitude":40.49,"longitude":-80.42},{"id":"iem_F_40.360_-80.700_1785694500000","source":"iem","severity":"low","severityValue":25,"timestamp":1785694500000,"latitude":40.36,"longitude":-80.7},{"id":"iem_F_40.360_-80.660_1785692700000","source":"iem","severity":"low","severityValue":25,"timestamp":1785692700000,"latitude":40.36,"longitude":-80.66},{"id":"gnews_weather_496029_232","source":"google_news","severity":"medium","severityValue":40,"timestamp":1785706083000,"latitude":40.44,"longitude":-80}] |
Safety Information
If a tornado warning is issued: go to a basement or an interior room on the lowest floor, away from windows. A vehicle and a mobile home are not shelter. Cover your head and neck. Wait for the official all-clear before going outside, and watch for downed power lines and gas leaks afterwards.
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 72/100, near Upper Saint Clair (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.