This alert expired on 13 May 2026 at 18:22 UTC. It is kept here as a record.
No stronger detection stands among the 36 recorded within 20 km of this point since 17 March 2026 — 12 others scored the same. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 13 at 2:13PM EDT until May 13 at 2:15PM EDT by NWS Buffalo NY
An estimated 30,075 people live within 50 km of this point.
Nearby, since 17 March 2026
- July 6, 2026 · score 34 · 7.5 km
- July 3, 2026 · score 34 · 9.4 km
- July 28, 2026 · score 22 · 17.9 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.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 34 / 100 |
| Our confidence | 81% |
| Coordinates | 41.8462, -78.8802 |
| Nearest City | Jamestown (41 km) |
| Population Exposed | 30.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-13T18:13:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.53584efc9a5adfb66265da13cff11525 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Allegany, NY; Cattaraugus, NY; Armstrong, PA; Butler, PA; Clarion, PA; Jefferson, PA; Allegany, NY; Cattaraugus, NY; Livingston, NY; Wyoming, NY and 3 more areas |
| Headline | Severe Thunderstorm Warning issued May 13 at 2:13PM EDT until May 13 at 2:15PM EDT by NWS Buffalo NY |
| Expires | 2026-05-13T14:22:00-04:00 |
| SenderName | NWS Buffalo NY |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.53584efc9a5adfb66265da13cff11525d526e380.001.1","noaa_urn:oid:2.49.0.1.840.0.92b18324b717ae18bd8a53a3ae53d68afc207937.001.1","noaa_urn:oid:2.49.0.1.840.0.722c8cf982007448de10d68474c6dea2ff512476.001.1","noaa_urn:oid:2.49.0.1.840.0.9daf29cf3f15e97600a579e70747d34df5c5ab2f.001.1","noaa_urn:oid:2.49.0.1.840.0.1b4b2e20191468e08a0453f263bab0468c495f5b.001.1","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 10 February 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.