Right now
The most recent data we hold from NOAA arrived 12 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 2 August 2026 at 22:15 UTC. It is kept here as a record.
No stronger detection stands among the 102 recorded within 20 km of this point since 15 March 2026 — 7 others scored the same. Another comparable one was recorded here earlier the same day. 11 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued August 2 at 5:40PM EDT until August 2 at 6:15PM EDT by NWS Pittsburgh PA
Urban PEI: 690,465 within a heuristic 50 km radius; not unique people.
Nearby, since 15 March 2026
- August 2, 2026 · score 72 · 3.3 km
- July 5, 2026 · score 48 · 6.7 km
- August 27, 2026 · score 41 · 10.7 km
How we know
6 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 72 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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 | Critical |
| Calamity Score (ours) | 72 / 100 |
| Legacy data-support index | 0.91/1 |
| Coordinates | 40.4483, -80.2533 |
| Nearest City | Upper Saint Clair (19 km) |
| Urban exposure index (PEI) | 690.5K within 50 km |
| Impact Tier | catastrophic |
| Timestamp | 2026-08-02T21:40:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.27f1453e1097acdda8270955f8014b37b70d2f99.001.1 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-08-02T21:40:00.000Z.
First archived: 2026-08-02T21:42:48.164Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Allegheny, PA; Washington, PA |
| Headline | Tornado Warning issued August 2 at 5:40PM 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 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.
Review the area, threshold and delivery channel in your account.
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