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.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 17 March 2026 at 23:00 UTC. It is kept here as a record.
It is the 17th strongest of the 59 detections recorded within 20 km of this point since 17 March 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Snow Squall Warning issued March 17 at 6:35PM EDT until March 17 at 7:00PM EDT by NWS Pittsburgh PA
Nearby, since 17 March 2026
- June 14, 2026 · score 46 · 3.2 km
- March 17, 2026 · score 22 · 5.2 km
- July 18, 2026 · score 22 · 11.5 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 22 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 v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 22 / 100 |
| Our confidence | 61% |
| Coordinates | 41.2217, -79.5239 |
| Nearest City | New Castle (73 km) |
| Impact Tier | minor |
| Timestamp | 2026-03-17T22:35:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.4ca88c592bd1ac1decfbc46e661f4190c5446974.001.1 |
Score Breakdown
Technical Details
| Event | Snow Squall Warning |
| Urgency | Expected |
| Certainty | Likely |
| AreaDesc | Armstrong, PA; Butler, PA; Clarion, PA; Forest, PA; Jefferson, PA; Mercer, PA; Venango, PA |
| Headline | Snow Squall Warning issued March 17 at 6:35PM EDT until March 17 at 7:00PM EDT by NWS Pittsburgh PA |
| Expires | 2026-03-17T19:00:00-04:00 |
| 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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.