This alert expired on 21 July 2026 at 19:45 UTC. It is kept here as a record.
No stronger detection stands among the 64 recorded within 20 km of this point since 12 March 2026 — 3 others scored the same. 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: Tornado Warning issued July 21 at 3:08PM EDT until July 21 at 3:45PM EDT by NWS Mount Holly NJ
An estimated 7,680,628 people live within 50 km of this point.
Nearby, since 12 March 2026
- July 29, 2026 · score 52 · 6.8 km
- June 23, 2026 · score 52 · 7.2 km
- June 23, 2026 · score 52 · 10.8 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 76 out of 100, at 79 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | critical |
| Calamity Score (ours) | 76 / 100 |
| Our confidence | 79% |
| Coordinates | 41.0586, -74.3922 |
| Nearest City | West Milford (8 km) |
| Population Exposed | 7.7M within 50 km |
| Impact Tier | catastrophic |
| Timestamp | 2026-07-21T19:08:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.5c9dcea9f631bcab45bfc32658e28137 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Morris, NJ; Sullivan, NY; Essex, NJ and 1 more areas |
| Headline | Tornado Warning issued July 21 at 3:08PM EDT until July 21 at 3:45PM EDT by NWS Mount Holly NJ |
| Expires | 2026-07-21T15:45:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.5c9dcea9f631bcab45bfc32658e281376848ca97.002.1","noaa_urn:oid:2.49.0.1.840.0.d46a5dd9be95cff367f66403f8f2cef6b479e362.001.1","noaa_urn:oid:2.49.0.1.840.0.712b6b35548be2de22a085ca5fba18fa6b797ce7.001.1","noaa_urn:oid:2.49.0.1.840.0.5a3c99fa21093403ddb7752acb08ebb31c3c7d9d.001.1","noaa_urn:oid:2.49.0.1.840.0.3601c1341fccdfda565b1a3e2e81a3c3a4d34df3.001.1"] |
Safety Information
If a tornado warning is issued: go to a basement or an interior room on the lowest floor, away from windows. A vehicle and a mobile home are not shelter. Cover your head and neck. Wait for the official all-clear before going outside, and watch for downed power lines and gas leaks afterwards.
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 76/100, near West Milford (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.