Right now
The most recent data we hold from NOAA arrived 4 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
3 other detections within 20 km in the last 24 hours, the nearest 7 km from here.
This alert expired on 12 September 2026 at 21:15 UTC. It is kept here as a record.
It is the 19th strongest of the 75 detections recorded within 20 km of this point since 17 March 2026. The last comparable one was on 3 September 2026. 18 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 12 at 4:20PM EDT until September 12 at 5:15PM EDT by NWS Pittsburgh PA
Nearby, since 17 March 2026
- September 12, 2026 · score 16 · 7.4 km
- July 18, 2026 · score 46 · 7.4 km
- June 14, 2026 · score 46 · 9.3 km
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 61 % 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 | 61% |
| Coordinates | 41.0393, -78.9367 |
| Nearest City | Altoona (74 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-12T20:20:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.4b59f74233ed08e94ff66fe33daf1739d1ac1ad4.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Armstrong, PA; Indiana, PA; Jefferson, PA |
| Headline | Severe Thunderstorm Warning issued September 12 at 4:20PM EDT until September 12 at 5:15PM EDT by NWS Pittsburgh PA |
| Expires | 2026-09-12T17:15:00-04:00 |
| SenderName | NWS Pittsburgh PA |
| HasExactCoords | true |
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.
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