This alert expired on 3 September 2026 at 04:15 UTC. It is kept here as a record.
It is the 7th strongest of the 14 detections recorded within 20 km of this point since 17 March 2026. The last comparable one was on 2 September 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 2 at 11:09PM EDT until September 3 at 12:15AM EDT by NWS State College PA
Nearby, since 17 March 2026
- July 18, 2026 · score 46 · 2.7 km
- August 10, 2026 · score 22 · 18.4 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 16 out of 100, at 67 % 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 | 67% |
| Coordinates | 41.5233, -77.9783 |
| Nearest City | State College (82 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-03T03:09:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.2e219a1f8549583ccd24e64bcf784677f212e24e.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Elk, PA; McKean, PA; Warren, PA; Cattaraugus, NY; Chautauqua, NY; Dauphin, PA; Northumberland, PA; Snyder, PA; Union, PA and 2 more areas |
| Headline | Severe Thunderstorm Warning issued September 2 at 11:09PM EDT until September 3 at 12:15AM EDT by NWS State College PA |
| Expires | 2026-09-03T00:15:00-04:00 |
| SenderName | NWS State College PA |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.2e219a1f8549583ccd24e64bcf784677f212e24e.001.1","noaa_urn:oid:2.49.0.1.840.0.330713247f34d83909ec45e548e3e8d9f6b77602.001.1","noaa_urn:oid:2.49.0.1.840.0.63aade02e4be43cceb2fa486afa6e454d1607a65.001.1","noaa_urn:oid:2.49.0.1.840.0.09cc5e275bf1ce88ba55ce568b6cf2fdbd5137a5.001.1","noaa_urn:oid:2.49.0.1.840.0.07fd8798cb736798e285bbab7b1e1945ad9f37c4.002.1"] |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | 2 NNE Rockton |
| Spc County | Clearfield |
| Spc State | PA |
| Spc Comments | Tree and wires down across roadway at intersection of Winterburn Road and Anderson Creek Road. (CTP) |
| MergedSources | [{"id":"spc_wind_41.33_-78.60_17","source":"spc","severity":"medium","severityValue":45,"timestamp":1788405019882,"latitude":41.33,"longitude":-78.6},{"id":"spc_wind_41.11_-78.64_18","source":"spc","severity":"medium","severityValue":45,"timestamp":1788405019882,"latitude":41.11,"longitude":-78.64},{"id":"spc_wind_41.11_-78.64_19","source":"spc","severity":"medium","severityValue":45,"timestamp":1788405019882,"latitude":41.11,"longitude":-78.64}] |
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.