This alert expired on 18 June 2026 at 14:45 UTC. It is kept here as a record.
It is the 6th strongest of the 18 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 18 at 9:23AM EDT until June 18 at 10:45AM EDT by NWS Buffalo NY
Nearby, since 16 March 2026
- July 18, 2026 · score 46 · 7.1 km
- June 18, 2026 · score 22 · 20.6 km
- July 21, 2026 · score 28 · 23.4 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 59 % 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) | 22 / 100 |
| Our confidence | 59% |
| Coordinates | 42.2729, -78.3536 |
| Nearest City | Lackawanna (73 km) |
| Impact Tier | minor |
| Timestamp | 2026-06-18T13:23:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.2cbb58dd81f02c364e5e8fd362cc0eb8 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Allegany, NY; Cattaraugus, NY |
| Headline | Severe Thunderstorm Warning issued June 18 at 9:23AM EDT until June 18 at 10:45AM EDT by NWS Buffalo NY |
| Expires | 2026-06-18T10:45:00-04:00 |
| SenderName | NWS Buffalo NY |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.2cbb58dd81f02c364e5e8fd362cc0eb82a8f4c60.001.1","noaa_urn:oid:2.49.0.1.840.0.fe0a6b2af451531fa92b504312502f2462c28be6.001.1"] |
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 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.