This alert expired on 12 June 2026 at 22:47 UTC. It is kept here as a record.
It is the 612th strongest of the 739 detections recorded within 20 km of this point since 10 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 12 at 6:38PM EDT until June 12 at 6:45PM EDT by NWS Upton NY
An estimated 27,628,910 people live within 50 km of this point.
Nearby, since 10 March 2026
- July 21, 2026 · score 52 · 0.8 km
- August 8, 2026 · score 52 · 5.5 km
- July 21, 2026 · score 52 · 6.5 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 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) | 52 / 100 |
| Our confidence | 80% |
| Coordinates | 40.9379, -73.9596 |
| Nearest City | Dumont (3 km) |
| Population Exposed | 27.6M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-12T22:38:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.21dcf2cfc4ec6c77df25fe78dbcc0165 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Bergen, NJ; Rockland, NY; Westchester, NY; Bergen, NJ; Essex, NJ; Hudson, NJ; Passaic, NJ; Bronx, NY; Kings, NY; New York, NY; Queens, NY |
| Headline | Severe Thunderstorm Warning issued June 12 at 6:38PM EDT until June 12 at 6:45PM EDT by NWS Upton NY |
| Expires | 2026-06-12T18:47:00-04:00 |
| SenderName | NWS Upton NY |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.21dcf2cfc4ec6c77df25fe78dbcc01659c95c799.001.1","noaa_urn:oid:2.49.0.1.840.0.798f8e5b08b267759464dbc6c33ca6af67744d2f.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 52/100, near Dumont (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.