Right now
The most recent data we hold from NOAA arrived 6 minutes ago, and this point is in it.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 10 September 2026 at 01:30 UTC. It is kept here as a record.
No stronger detection stands among the 21 recorded within 20 km of this point since 1 April 2026 — one other scored the same. The last comparable one was on 3 September 2026. 9 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued September 9 at 8:59PM EDT until September 9 at 9:30PM EDT by NWS State College PA
Nearby, since 1 April 2026
- August 10, 2026 · score 22 · 9.8 km
- July 11, 2026 · score 22 · 11.5 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 46 out of 100, at 66 % 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 | 66% |
| Coordinates | 41.6350, -78.2783 |
| Nearest City | Jamestown (95 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-10T00:59:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.a46168fbdf2680da9fed1ab46f0efbb50956c1ce.001.1 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Cameron, PA; McKean, PA; Potter, PA |
| Headline | Tornado Warning issued September 9 at 8:59PM EDT until September 9 at 9:30PM EDT by NWS State College PA |
| Expires | 2026-09-09T21:30:00-04:00 |
| SenderName | NWS State College PA |
| HasExactCoords | true |
| Iem TypeSummary | C |
| Iem City | 3 WSW Cyclone |
| Iem County | McKean |
| Iem State | PA |
| Iem Wfo | CTP |
| Iem Remark | Funnel cloud seen traveling near the airport. |
| MergedSources | [{"id":"iem_C_41.800_-78.640_1788996000000","source":"iem","severity":"low","severityValue":25,"timestamp":1788996000000,"latitude":41.8,"longitude":-78.64}] |
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.
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