This alert expired on 31 August 2026 at 06:00 UTC. It is kept here as a record.
No stronger detection stands among the 139 recorded within 20 km of this point since 17 March 2026 — 116 others scored the same. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Special Marine Warning issued August 31 at 1:51AM EDT until August 31 at 2:00AM EDT by NWS Mount Holly NJ
An estimated 164,705 people live within 50 km of this point.
Nearby, since 17 March 2026
- June 12, 2026 · score 43 · 6.6 km
- July 5, 2026 · score 43 · 14.6 km
- March 17, 2026 · score 43 · 18.5 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 91 % 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 | 91% |
| Coordinates | 39.6040, -73.9540 |
| Nearest City | Ocean Acres (32 km) |
| Population Exposed | 164.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-31T05:51:00.000Z |
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; Waters from Manasquan Inlet NJ to Little Egg Inlet NJ from 20 to 60 NM; Waters from Little Egg Inlet NJ to Great Egg Inlet NJ from 20 to 60 NM |
| Headline | Special Marine Warning issued August 31 at 1:51AM EDT until August 31 at 2:00AM EDT by NWS Mount Holly NJ |
| Expires | 2026-08-31T02:00:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
| Iem TypeSummary | M |
| Iem Magnitude | 41 |
| Iem Unit | MPH |
| Iem City | 2 SSW Barnegat Light |
| Iem County | Ocean |
| Iem State | NJ |
| Iem Wfo | PHI |
| Iem Remark | Wunderground station KNJLONGB101. |
| MergedSources | [{"id":"iem_M_39.760_-74.130_1788150540000","source":"iem","severity":"low","severityValue":25,"timestamp":1788150540000,"latitude":39.76,"longitude":-74.13},{"id":"iem_M_39.730_-74.120_1788150540000","source":"iem","severity":"low","severityValue":25,"timestamp":1788150540000,"latitude":39.73,"longitude":-74.12}] |
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 Ocean Acres (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.