Right now
The most recent data we hold from NOAA arrived 2 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 13 May 2026 at 18:15 UTC. It is kept here as a record.
It is the 2nd strongest of the 62 detections recorded within 20 km of this point since 13 March 2026. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 13 at 1:52PM EDT until May 13 at 2:15PM EDT by NWS Pittsburgh PA
An estimated 30,075 people live within 50 km of this point.
Nearby, since 13 March 2026
- March 13, 2026 · score 34 · 14.3 km
- May 13, 2026 · score 34 · 16.5 km
- September 2, 2026 · score 58 · 19.8 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 34 out of 100, at 81 % 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) | 34 / 100 |
| Our confidence | 81% |
| Coordinates | 41.8424, -79.0791 |
| Nearest City | Jamestown (32 km) |
| Population Exposed | 30.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-13T17:52:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.4b71ff24cd12d2001d86138c59eb8dec |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Clarion, PA; Forest, PA; Venango, PA; Allegany, NY; Cattaraugus, NY; McKean, PA; Warren, PA |
| Headline | Severe Thunderstorm Warning issued May 13 at 1:52PM EDT until May 13 at 2:15PM EDT by NWS Pittsburgh PA |
| Expires | 2026-05-13T14:15:00-04:00 |
| SenderName | NWS Pittsburgh PA |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.4b71ff24cd12d2001d86138c59eb8dec68d1f443.001.1","noaa_urn:oid:2.49.0.1.840.0.bedfe1a38a09519d3e39c493e48189b82ef3ec46.002.1","noaa_urn:oid:2.49.0.1.840.0.b9a075bf74aab66a6160c1c3f7ab0aa14ad1b198.001.1"] |
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 34/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.