This alert expired on 9 July 2026 at 20:30 UTC. It is kept here as a record.
It is the 4th strongest of the 78 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 18 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 9 at 4:04PM EDT until July 9 at 4:30PM EDT by NWS Buffalo NY
An estimated 1,083,910 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 1, 2026 · score 52 · 3.2 km
- July 21, 2026 · score 46 · 4.5 km
- July 9, 2026 · score 52 · 5.2 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 52 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 | Medium |
| Calamity Score (ours) | 52 / 100 |
| Our confidence | 81% |
| Coordinates | 43.1553, -78.9047 |
| Nearest City | North Tonawanda (13 km) |
| Population Exposed | 1.1M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-09T20:04:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.0dde0073f9b3494a6b1918902706595ea6a1d5b7.002.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Erie, NY; Niagara, NY |
| Headline | Severe Thunderstorm Warning issued July 9 at 4:04PM EDT until July 9 at 4:30PM EDT by NWS Buffalo NY |
| Expires | 2026-07-09T16:30:00-04:00 |
| SenderName | NWS Buffalo NY |
| HasExactCoords | true |
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 North Tonawanda?
Calamity.live data shows a weather event with CalamityScore 52/100, near North Tonawanda (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.