This alert expired on 3 September 2026 at 01:00 UTC. It is kept here as a record.
No stronger detection stands among the 25 recorded within 20 km of this point since 17 March 2026 — one other scored the same. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Tornado Warning issued September 2 at 8:47PM EDT until September 2 at 9:00PM EDT by NWS Binghamton NY
An estimated 59,001 people live within 50 km of this point.
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 63 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 v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Critical |
| Calamity Score (ours) | 63 / 100 |
| Our confidence | 85% |
| Coordinates | 42.1752, -76.9599 |
| Nearest City | Elmira (16 km) |
| Population Exposed | 59.0K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-09-03T00:47:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.25f7b53d347924a407b86e901d309b1925c1a5d4.001.1 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Cayuga, NY; Seneca, NY; Cayuga, NY; Onondaga, NY; Tioga, PA and 1 more areas |
| Headline | Tornado Warning issued September 2 at 8:47PM EDT until September 2 at 9:00PM EDT by NWS Binghamton NY |
| Expires | 2026-09-02T21:00:00-04:00 |
| SenderName | NWS Binghamton NY |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.25f7b53d347924a407b86e901d309b1925c1a5d4.001.1","noaa_urn:oid:2.49.0.1.840.0.a0fa91972a92afd2487fa6a9910ca1811f0af17c.001.1","noaa_urn:oid:2.49.0.1.840.0.a274e5536fc807c2cc9f7fd8fd0192a9b2dc44f7.001.1","noaa_urn:oid:2.49.0.1.840.0.018139686b7277d0f66a0c6b3f8394fe5a1b8a26.001.1"] |
| Spc ReportType | wind |
| Spc Speed | 60 |
| Spc Location | 2 S Penn Yan |
| Spc County | Yates |
| Spc State | NY |
| Spc Comments | (BGM) |
| MergedSources | [{"id":"spc_wind_42.64_-77.05_185","source":"spc","severity":"medium","severityValue":45,"timestamp":1788395760000,"latitude":42.64,"longitude":-77.05}] |
Safety Information
If a tornado warning is issued: go to a basement or an interior room on the lowest floor, away from windows. A vehicle and a mobile home are not shelter. Cover your head and neck. Wait for the official all-clear before going outside, and watch for downed power lines and gas leaks afterwards.
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 Elmira?
Calamity.live data shows a weather event with CalamityScore 63/100, near Elmira (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.