This alert expired on 2 September 2026 at 12:15 UTC. It is kept here as a record.
No stronger detection stands among the 50 recorded within 20 km of this point since 13 March 2026 — 3 others scored the same. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Tornado Warning issued September 2 at 7:51AM EDT until September 2 at 8:15AM EDT by NWS State College PA
An estimated 30,075 people live within 50 km of this point.
Nearby, since 13 March 2026
- July 18, 2026 · score 34 · 7.7 km
- March 13, 2026 · score 34 · 11.8 km
- August 2, 2026 · score 58 · 13.2 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 58 out of 100, at 86 % 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 | Critical |
| Calamity Score (ours) | 58 / 100 |
| Our confidence | 86% |
| Coordinates | 41.7683, -79.2967 |
| Nearest City | Jamestown (37 km) |
| Population Exposed | 30.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-02T11:51:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.2b57abb6e8a754d417e22b714efba7d6cd6509b7.001.1 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Warren, PA |
| Headline | Tornado Warning issued September 2 at 7:51AM EDT until September 2 at 8:15AM EDT by NWS State College PA |
| Expires | 2026-09-02T08:15:00-04:00 |
| SenderName | NWS State College PA |
| HasExactCoords | true |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | W Kane |
| Spc County | McKean |
| Spc State | PA |
| Spc Comments | Tree down with wires in the 500 block of Park Avenue. (CTP) |
| MergedSources | [{"id":"spc_wind_41.66_-80.09_13","source":"spc","severity":"medium","severityValue":45,"timestamp":1788350300094,"latitude":41.66,"longitude":-80.09},{"id":"spc_wind_41.61_-80.11_14","source":"spc","severity":"medium","severityValue":45,"timestamp":1788350300094,"latitude":41.61,"longitude":-80.11},{"id":"spc_wind_41.64_-80.09_16","source":"spc","severity":"medium","severityValue":45,"timestamp":1788350300094,"latitude":41.64,"longitude":-80.09},{"id":"spc_wind_41.63_-80.06_17","source":"spc","severity":"medium","severityValue":45,"timestamp":1788350300094,"latitude":41.63,"longitude":-80.06},{"id":"spc_wind_41.77_-79.79_20","source":"spc","severity":"medium","severityValue":45,"timestamp":1788350300094,"latitude":41.77,"longitude":-79.79},{"id":"spc_wind_41.62_-79.64_30","source":"spc","severity":"medium","severityValue":45,"timestamp":1788350300094,"latitude":41.62,"longitude":-79.64},{"id":"spc_wind_41.63_-79.55_33","source":"spc","severity":"medium","severityValue":45,"timestamp":1788350300094,"latitude":41.63,"longitude":-79.55},{"id":"spc_wind_41.59_-79.58_34","source":"spc","severity":"medium","severityValue":45,"timestamp":1788350300094,"latitude":41.59,"longitude":-79.58},{"id":"spc_wind_41.71_-79.35_41","source":"spc","severity":"medium","severityValue":45,"timestamp":1788350300094,"latitude":41.71,"longitude":-79.35},{"id":"spc_wind_41.62_-79.43_43","source":"spc","severity":"medium","severityValue":45,"timestamp":1788350300094,"latitude":41.62,"longitude":-79.43},{"id":"spc_wind_41.72_-78.97_49","source":"spc","severity":"medium","severityValue":45,"timestamp":1788350300094,"latitude":41.72,"longitude":-78.97},{"id":"spc_wind_41.66_-78.82_53","source":"spc","severity":"medium","severityValue":45,"timestamp":1788350300094,"latitude":41.66,"longitude":-78.82}] |
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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 58/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.