This alert expired on 18 June 2026 at 20:30 UTC. It is kept here as a record.
No stronger detection stands among the 60 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. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 18 at 4:06PM EDT until June 18 at 4:30PM EDT by NWS Albany NY
An estimated 193,379 people live within 50 km of this point.
Nearby, since 17 March 2026
- June 26, 2026 · score 37 · 15.8 km
How we know
Confirmed by 8 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 88 % 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) | 43 / 100 |
| Our confidence | 88% |
| Coordinates | 42.8285, -72.0907 |
| Nearest City | Keene (19 km) |
| Population Exposed | 193.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-18T20:06:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.adaab0d07045682a6bf606b0e400dbff |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Berkshire, MA; Columbia, NY; Franklin, MA; Middlesex, MA; Worcester, MA; Cheshire, NH; Hillsborough, NH; Merrimack, NH; Rockingham, NH and 1 more areas |
| Headline | Severe Thunderstorm Warning issued June 18 at 4:06PM EDT until June 18 at 4:30PM EDT by NWS Albany NY |
| Expires | 2026-06-18T16:30:00-04:00 |
| SenderName | NWS Albany NY |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.adaab0d07045682a6bf606b0e400dbffc71b3e8c.001.1","noaa_urn:oid:2.49.0.1.840.0.4fb56a9fa2e08381cb13c126670e091984ffe3a5.001.1","noaa_urn:oid:2.49.0.1.840.0.30ca2b3437e1cfe4280e70a8bf009387ce2c30fc.001.1","noaa_urn:oid:2.49.0.1.840.0.bbfd21e2e66247c8eb824d9d70fa129d365948eb.001.1"] |
| Iem TypeSummary | D |
| Iem City | 4 SSW Westminster |
| Iem County | Windham |
| Iem State | VT |
| Iem Wfo | ALY |
| Iem Remark | Tree down on wires on Old Ledge Road in the Town of Westminster. |
| MergedSources | [{"id":"iem_D_43.400_-72.110_1781811000000","source":"iem","severity":"low","severityValue":25,"timestamp":1781811000000,"latitude":43.4,"longitude":-72.11},{"id":"iem_D_43.400_-72.360_1781809500000","source":"iem","severity":"low","severityValue":25,"timestamp":1781809500000,"latitude":43.4,"longitude":-72.36},{"id":"iem_G_43.380_-72.340_1781809500000","source":"iem","severity":"low","severityValue":25,"timestamp":1781809500000,"latitude":43.38,"longitude":-72.34},{"id":"iem_D_43.080_-72.540_1781810580000","source":"iem","severity":"low","severityValue":25,"timestamp":1781810580000,"latitude":43.08,"longitude":-72.54},{"id":"iem_D_43.170_-72.410_1781810400000","source":"iem","severity":"low","severityValue":25,"timestamp":1781810400000,"latitude":43.17,"longitude":-72.41},{"id":"iem_D_43.390_-72.090_1781811300000","source":"iem","severity":"low","severityValue":25,"timestamp":1781811300000,"latitude":43.39,"longitude":-72.09},{"id":"iem_D_43.030_-72.490_1781810700000","source":"iem","severity":"low","severityValue":25,"timestamp":1781810700000,"latitude":43.03,"longitude":-72.49}] |
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 Keene?
Calamity.live data shows a weather event with CalamityScore 43/100, near Keene (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.