This alert expired on 31 August 2026 at 05:00 UTC. It is kept here as a record.
It is the 4th strongest of the 213 detections recorded within 20 km of this point since 12 March 2026. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Special Marine Warning issued August 31 at 12:34AM EDT until August 31 at 1:00AM EDT by NWS Mount Holly NJ
An estimated 289,612 people live within 50 km of this point.
Nearby, since 12 March 2026
- March 12, 2026 · score 43 · 2.1 km
- August 3, 2026 · score 43 · 4.3 km
- July 21, 2026 · score 67 · 5.3 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 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) | 43 / 100 |
| Our confidence | 81% |
| Coordinates | 39.8283, -74.0583 |
| Nearest City | Bayville (12 km) |
| Population Exposed | 289.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-31T04:34:00.000Z |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 NM |
| Headline | Special Marine Warning issued August 31 at 12:34AM EDT until August 31 at 1:00AM EDT by NWS Mount Holly NJ |
| Expires | 2026-08-31T01:00:00-04:00 |
| 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.
Calamity.live data shows a weather event with CalamityScore 43/100, near Bayville (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.