This alert expired on 11 June 2026 at 20:52 UTC. It is kept here as a record.
It is the 38th strongest of the 78 detections recorded within 20 km of this point since 12 March 2026. Another comparable one was recorded here earlier the same day. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 11 at 4:42PM EDT until June 11 at 4:45PM EDT by NWS Upton NY
An estimated 1,856,896 people live within 50 km of this point.
Nearby, since 12 March 2026
- July 1, 2026 · score 52 · 5.1 km
- July 27, 2026 · score 52 · 6.4 km
- March 12, 2026 · score 48 · 14.3 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 46 out of 100, at 80 % 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) | 46 / 100 |
| Our confidence | 80% |
| Coordinates | 41.5303, -73.2919 |
| Nearest City | Southbury (9 km) |
| Population Exposed | 1.9M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-11T20:42:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Fairfield, CT; New Haven, CT; Litchfield, CT; Dutchess, NY; Fairfield, CT; New Haven, CT; Putnam, NY |
| Headline | Severe Thunderstorm Warning issued June 11 at 4:42PM EDT until June 11 at 4:45PM EDT by NWS Upton NY |
| Expires | 2026-06-11T16:52:00-04:00 |
| SenderName | NWS Upton NY |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.7968d960b6351d09230ba1c3d85e6d632199cfc8.001.1","noaa_urn:oid:2.49.0.1.840.0.db3ceb2aab6e735a6d1aba61aaeed70c0f4c59cd.001.1","noaa_urn:oid:2.49.0.1.840.0.1e11404502b381ad221786e21b2ade14608091e6.001.1"] |
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.
Calamity.live data shows a weather event with CalamityScore 46/100, near Southbury (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.