This alert expired on 2 September 2026 at 00:15 UTC. It is kept here as a record.
It is the 23rd strongest of the 46 detections recorded within 20 km of this point since 11 June 2026. The last comparable one was on 22 August 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 1 at 7:47PM EDT until September 1 at 8:15PM EDT by NWS State College PA
Nearby, since 11 June 2026
- September 1, 2026 · score 16 · 14.5 km
- June 14, 2026 · score 46 · 16.5 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 16 out of 100, at 65 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 16 / 100 |
| Our confidence | 65% |
| Coordinates | 41.4945, -78.6691 |
| Nearest City | Jamestown (82 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-01T23:47:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.b99bf5b5d1cb0fd8791de222c2b6f013f325f547.002.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Elk, PA; McKean, PA |
| Headline | Severe Thunderstorm Warning issued September 1 at 7:47PM EDT until September 1 at 8:15PM EDT by NWS State College PA |
| Expires | 2026-09-01T20:15:00-04:00 |
| 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_41.63_-79.55_20","source":"spc","severity":"medium","severityValue":45,"timestamp":1788307849089,"latitude":41.63,"longitude":-79.55},{"id":"spc_wind_41.71_-79.35_25","source":"spc","severity":"medium","severityValue":45,"timestamp":1788307849089,"latitude":41.71,"longitude":-79.35},{"id":"spc_wind_41.72_-78.97_26","source":"spc","severity":"medium","severityValue":45,"timestamp":1788307849089,"latitude":41.72,"longitude":-78.97},{"id":"spc_wind_41.66_-78.82_27","source":"spc","severity":"medium","severityValue":45,"timestamp":1788307849089,"latitude":41.66,"longitude":-78.82}] |
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 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.
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.