This alert expired on 1 September 2026 at 21:45 UTC. It is kept here as a record.
It is the 11th strongest of the 15 detections recorded within 20 km of this point since 20 May 2026. The last comparable one was on 28 August 2026.
What the source measured
NOAA reported: Special Marine Warning issued September 1 at 4:47PM EDT until September 1 at 5:45PM EDT by NWS Mount Holly NJ
An estimated 141,303 people live within 50 km of this point.
Nearby, since 20 May 2026
- July 4, 2026 · score 43 · 4.2 km
- July 5, 2026 · score 43 · 11.1 km
- July 15, 2026 · score 39 · 13.1 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 37 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) | 37 / 100 |
| Our confidence | 80% |
| Coordinates | 40.0163, -73.5588 |
| Nearest City | Point Pleasant (44 km) |
| Population Exposed | 141.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-01T20:47:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.e2042b3649aaf405b8862eeda0dbf39b2e0af161.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 NM; Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 NM; Waters from Sandy Hook NJ to Manasquan Inlet NJ from 20 to 40 NM; Waters from Manasquan Inlet NJ to Little Egg Inlet NJ from 20 to 60 NM |
| Headline | Special Marine Warning issued September 1 at 4:47PM EDT until September 1 at 5:45PM EDT by NWS Mount Holly NJ |
| Expires | 2026-09-01T17:45:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
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 in this area?
Calamity.live data shows a weather event with CalamityScore 37/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.