This alert expired on 15 July 2026 at 21:15 UTC. It is kept here as a record.
It is the 19th strongest of the 85 detections recorded within 20 km of this point since 12 March 2026. The last comparable one was on 5 July 2026. 16 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 15 at 4:29PM EDT until July 15 at 5:15PM EDT by NWS Upton NY
An estimated 26,705,777 people live within 50 km of this point.
Nearby, since 12 March 2026
- August 6, 2026 · score 66 · 5.7 km
- August 3, 2026 · score 66 · 5.7 km
- July 21, 2026 · score 52 · 6.6 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.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 52 / 100 |
| Our confidence | 81% |
| Coordinates | 40.9088, -74.3218 |
| Nearest City | Wayne (4 km) |
| Population Exposed | 26.7M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-15T20:29:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.3c15db09090cb3936e598d19d17a3e0b |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Bergen, NJ; Essex, NJ; Hudson, NJ; Passaic, NJ; Union, NJ; Bronx, NY; New York, NY; Morris, NJ; Sussex, NJ |
| Headline | Severe Thunderstorm Warning issued July 15 at 4:29PM EDT until July 15 at 5:15PM EDT by NWS Upton NY |
| Expires | 2026-07-15T17:15:00-04:00 |
| SenderName | NWS Upton NY |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.3c15db09090cb3936e598d19d17a3e0b39bb1fd6.001.1","noaa_urn:oid:2.49.0.1.840.0.6ed49ba52e86e0f8063c3c835afcc433026a7ab3.001.1"] |
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 Wayne (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.