This alert expired on 3 September 2026 at 00:30 UTC. It is kept here as a record.
It is the 2nd strongest of the 26 detections recorded within 20 km of this point since 15 April 2026. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Tornado Warning issued September 2 at 8:24PM EDT until September 2 at 8:30PM EDT by NWS State College PA
Nearby, since 15 April 2026
- July 28, 2026 · score 22 · 14.2 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 46 out of 100, at 60 % 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) | 46 / 100 |
| Our confidence | 60% |
| Coordinates | 42.1016, -77.4222 |
| Nearest City | Elmira (51 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-03T00:24:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.6858b32a7a4b6056424f41c0dc81629d20893c0e.001.1 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Tioga, PA; Cayuga, NY; Seneca, NY; Allegany, NY; Livingston, NY and 1 more areas |
| Headline | Tornado Warning issued September 2 at 8:24PM EDT until September 2 at 8:30PM EDT by NWS State College PA |
| Expires | 2026-09-02T20:30:00-04:00 |
| SenderName | NWS State College PA |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.6858b32a7a4b6056424f41c0dc81629d20893c0e.001.1","noaa_urn:oid:2.49.0.1.840.0.435a271eac975176e4749288348ca7a18a71f3f7.001.1","noaa_urn:oid:2.49.0.1.840.0.12ec1f47fb8c9ce2201b2b67516d12ad054e8465.002.1","noaa_urn:oid:2.49.0.1.840.0.ac951dee0397f9a891a3fcb4423d3e985990c0e4.001.1"] |
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 46/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.