This alert expired on 13 May 2026 at 22:00 UTC. It is kept here as a record.
No stronger detection stands among the 24 recorded within 20 km of this point since 15 March 2026 — 4 others scored the same. 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 May 13 at 4:49PM EDT until May 13 at 6:00PM EDT by NWS Buffalo NY
An estimated 251,767 people live within 50 km of this point.
Nearby, since 15 March 2026
- May 13, 2026 · score 43 · 3.8 km
- August 8, 2026 · score 43 · 17.0 km
- August 8, 2026 · score 43 · 19.9 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 85 % 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) | 43 / 100 |
| Our confidence | 85% |
| Coordinates | 43.3484, -76.1014 |
| Nearest City | Clay (18 km) |
| Population Exposed | 251.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-13T20:49:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.eafd0fc79198c7b4c027dca164780291 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Jefferson, NY; Lewis, NY; Oswego, NY; Cayuga, NY; Cortland, NY; Onondaga, NY |
| Headline | Severe Thunderstorm Warning issued May 13 at 4:49PM EDT until May 13 at 6:00PM EDT by NWS Buffalo NY |
| Expires | 2026-05-13T18:00:00-04:00 |
| SenderName | NWS Buffalo NY |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.eafd0fc79198c7b4c027dca164780291d6ce96de.001.1","noaa_urn:oid:2.49.0.1.840.0.40c34ddab0092ba09efd44f7fa5179e948135a06.001.1"] |
| Iem TypeSummary | D |
| Iem City | 2 S Clyde |
| Iem County | Wayne |
| Iem State | NY |
| Iem Wfo | BUF |
| Iem Remark | Tree and wires down on Route 414. |
| MergedSources | [{"id":"iem_D_43.060_-76.870_1778702820000","source":"iem","severity":"low","severityValue":25,"timestamp":1778702820000,"latitude":43.06,"longitude":-76.87}] |
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 near Clay?
Calamity.live data shows a weather event with CalamityScore 43/100, near Clay (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.