This alert expired on 10 August 2026 at 16:00 UTC. It is kept here as a record.
It is the 2nd strongest of the 25 detections recorded within 20 km of this point since 17 March 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 10 at 11:36AM EDT until August 10 at 12:00PM EDT by NWS Buffalo NY
An estimated 30,075 people live within 50 km of this point.
Nearby, since 17 March 2026
- June 18, 2026 · score 58 · 4.5 km
How we know
Confirmed by 4 independent sources, including NOAA.
Our own score for this event is 34 out of 100, at 92 % 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) | 34 / 100 |
| Our confidence | 92% |
| Coordinates | 42.0751, -78.8573 |
| Nearest City | Jamestown (32 km) |
| Population Exposed | 30.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-10T15:36:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.e55bf25ee8e7f3e51995096f3a731a49 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Cattaraugus, NY; Chautauqua, NY; Erie, NY; McKean, PA |
| Headline | Severe Thunderstorm Warning issued August 10 at 11:36AM EDT until August 10 at 12:00PM EDT by NWS Buffalo NY |
| Expires | 2026-08-10T12:00:00-04:00 |
| SenderName | NWS Buffalo NY |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.e55bf25ee8e7f3e51995096f3a731a49dc9f5919.001.1","noaa_urn:oid:2.49.0.1.840.0.b1e2c669706df73bd285916b7d0d62dc67f49d7a.002.1"] |
| Iem TypeSummary | M |
| Iem Magnitude | 41 |
| Iem Unit | MPH |
| Iem City | 2 NNW Westfield |
| Iem County | LEZ040 |
| Iem State | NY |
| Iem Wfo | BUF |
| Iem Remark | Mesonet station BARN6 1 NW Westfield. |
| MergedSources | [{"id":"iem_D_41.630_-79.400_1786373100000","source":"iem","severity":"low","severityValue":25,"timestamp":1786373100000,"latitude":41.63,"longitude":-79.4},{"id":"iem_D_41.680_-79.420_1786373400000","source":"iem","severity":"low","severityValue":25,"timestamp":1786373400000,"latitude":41.68,"longitude":-79.42},{"id":"iem_M_42.340_-79.590_1786374000000","source":"iem","severity":"low","severityValue":25,"timestamp":1786374000000,"latitude":42.34,"longitude":-79.59}] |
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 in this area?
Calamity.live data shows a weather event with CalamityScore 34/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.