This alert expired on 18 July 2026 at 17:45 UTC. It is kept here as a record.
No stronger detection stands among the 32 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. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued July 18 at 1:05PM EDT until July 18 at 1:45PM EDT by NWS Buffalo NY
An estimated 106,175 people live within 50 km of this point.
Nearby, since 17 March 2026
- July 18, 2026 · score 67 · 2.7 km
- July 21, 2026 · score 37 · 3.4 km
- July 22, 2026 · score 34 · 5.8 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 67 out of 100, at 81 % 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 | Critical |
| Calamity Score (ours) | 67 / 100 |
| Our confidence | 81% |
| Coordinates | 42.8710, -77.1190 |
| Nearest City | Henrietta (45 km) |
| Population Exposed | 106.2K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-07-18T17:05:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.7799ddbd4c94d26a3c637979ea3e0696d8b2612e.001.1 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Ontario, NY |
| Headline | Tornado Warning issued July 18 at 1:05PM EDT until July 18 at 1:45PM EDT by NWS Buffalo NY |
| Expires | 2026-07-18T13:45:00-04:00 |
| SenderName | NWS Buffalo NY |
| HasExactCoords | true |
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 in this area?
Calamity.live data shows a weather event with CalamityScore 67/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.