This alert expired on 3 September 2026 at 00:06 UTC. It is kept here as a record.
It is the 3rd strongest of the 40 detections recorded within 20 km of this point since 3 July 2026. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 2 at 7:56PM EDT until September 2 at 8:00PM EDT by NWS State College PA
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 16 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 | Medium |
| Calamity Score (ours) | 16 / 100 |
| Our confidence | 60% |
| Coordinates | 41.9254, -78.0475 |
| Nearest City | Jamestown (100 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-02T23:56:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.345eeb5dabcb508b3fc48604c5131936de57436f.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Franklin, PA; Fulton, PA; Centre, PA; Clinton, PA; Allegany, NY; Cattaraugus, NY; Chautauqua, NY; Erie, NY; Wyoming, NY and 4 more areas |
| Headline | Severe Thunderstorm Warning issued September 2 at 7:56PM EDT until September 2 at 8:00PM EDT by NWS State College PA |
| Expires | 2026-09-02T20:06:00-04:00 |
| SenderName | NWS State College PA |
| HasExactCoords | true |
| MergedCount | 7 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.345eeb5dabcb508b3fc48604c5131936de57436f.001.1","noaa_urn:oid:2.49.0.1.840.0.d7f76867756cd759a731e2a241a65ee6fdcc13b0.001.1","noaa_urn:oid:2.49.0.1.840.0.1477117819b995692e9650b71d782ab99c014e04.001.1","noaa_urn:oid:2.49.0.1.840.0.d9e4cbbe46f0b362c6863a10aff3d334f5853748.001.1","noaa_urn:oid:2.49.0.1.840.0.3a0d1408d897b787c99d087dff5c3b5a9914d379.001.1","noaa_urn:oid:2.49.0.1.840.0.709f9d764cac4d106c55a61f3a6bc4afa7820e2b.002.1","noaa_urn:oid:2.49.0.1.840.0.5e5d5b7bb971bc4c78113431b152be4c92368985.001.1"] |
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 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 16/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.