This alert expired on 13 May 2026 at 22:15 UTC. It is kept here as a record.
It is the 3rd strongest of the 15 detections recorded within 20 km of this point since 17 March 2026. The last comparable one was on 25 April 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 13 at 5:45PM EDT until May 13 at 6:15PM EDT by NWS Binghamton NY
An estimated 59,001 people live within 50 km of this point.
Nearby, since 17 March 2026
- July 21, 2026 · score 39 · 11.4 km
- July 3, 2026 · score 43 · 17.7 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 39 out of 100, at 90 % 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) | 39 / 100 |
| Our confidence | 90% |
| Coordinates | 42.0114, -76.6607 |
| Nearest City | Elmira (15 km) |
| Population Exposed | 59.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-13T21:45:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.735dbf7746986d7e4a0eedbae8de742ea4d95ea1.002.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Chemung, NY; Bradford, PA |
| Headline | Severe Thunderstorm Warning issued May 13 at 5:45PM EDT until May 13 at 6:15PM EDT by NWS Binghamton NY |
| Expires | 2026-05-13T18:15:00-04:00 |
| SenderName | NWS Binghamton NY |
| HasExactCoords | true |
| Iem TypeSummary | H |
| Iem Magnitude | 0.25 |
| Iem Unit | Inch |
| Iem City | 1 SSE Kanona |
| Iem County | Steuben |
| Iem State | NY |
| Iem Wfo | BGM |
| Iem Remark | Pea sized hail reported in the Kanona area of Steuben County NY. |
| MergedSources | [{"id":"iem_D_41.760_-77.260_1778706000000","source":"iem","severity":"low","severityValue":25,"timestamp":1778706000000,"latitude":41.76,"longitude":-77.26},{"id":"iem_H_42.380_-77.360_1778701380000","source":"iem","severity":"low","severityValue":25,"timestamp":1778701380000,"latitude":42.38,"longitude":-77.36}] |
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 near Elmira?
Calamity.live data shows a weather event with CalamityScore 39/100, near Elmira (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.