Right now
The most recent data we hold from NOAA arrived 3 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 17 March 2026 at 05:30 UTC. It is kept here as a record.
No stronger detection stands among the 71 recorded within 20 km of this point since 17 March 2026 — 8 others scored the same.
What the source measured
NOAA reported: Special Marine Warning issued March 16 at 11:30PM EDT until March 17 at 1:30AM EDT by NWS Mount Holly NJ
An estimated 146,367 people live within 50 km of this point.
Nearby, since 17 March 2026
- March 17, 2026 · score 43 · 0.0 km
- August 8, 2026 · score 37 · 7.9 km
- August 28, 2026 · score 43 · 8.7 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 77 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 43 / 100 |
| Our confidence | 77% |
| Coordinates | 39.3055, -74.4853 |
| Nearest City | Atlantic City (8 km) |
| Population Exposed | 146.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-17T03:30:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.58dad4de79ecab41e0dab42ae9072c80 |
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 out 20 to 40 nm; Waters from Manasquan Inlet NJ to Little Egg Inlet NJ out 20 to 40 nm; Delaware Bay waters north of East Point NJ to Slaughter Beach DE; Delaware Bay waters south of East Point NJ to Slaughter Beach DE; Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm; Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm; Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm; Waters from Manasquan Inlet NJ to Little Egg Inlet NJ out 20 to 40 nm; Waters from Little Egg Inlet NJ to Great Egg Inlet NJ out 20 to 40 nm from 20 to 40 NM; Waters from Great Egg Inlet NJ to Cape May NJ out 20 to 40 nm and 1 more areas |
| Headline | Special Marine Warning issued March 16 at 11:30PM EDT until March 17 at 1:30AM EDT by NWS Mount Holly NJ |
| Expires | 2026-03-17T01:30:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.58dad4de79ecab41e0dab42ae9072c8046e3c146.001.1","noaa_urn:oid:2.49.0.1.840.0.4fc7592bae7bb321f248c4452e80d82c14c9d46c.001.1","noaa_urn:oid:2.49.0.1.840.0.451caf8078dde7955d220ea2e675b785bd058744.001.1","noaa_urn:oid:2.49.0.1.840.0.521b61deaada1238738ff446dcad23d6912124e7.001.1"] |
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 8 March 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 near Atlantic City?
Calamity.live data shows a weather event with CalamityScore 43/100, near Atlantic City (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.