This alert expired on 17 March 2026 at 05:30 UTC. It is kept here as a record.
It is the 3rd strongest of the 56 detections recorded within 20 km of this point since 12 March 2026. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued March 17 at 12:49AM EDT until March 17 at 1:30AM EDT by NWS Mount Holly NJ
An estimated 19,497,768 people live within 50 km of this point.
Nearby, since 12 March 2026
- March 12, 2026 · score 52 · 6.2 km
- August 7, 2026 · score 52 · 7.5 km
- June 12, 2026 · score 52 · 11.5 km
How we know
Confirmed by 4 independent sources, including NOAA.
Our own score for this event is 52 out of 100, at 88 % 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) | 52 / 100 |
| Our confidence | 88% |
| Coordinates | 40.4581, -73.5467 |
| Nearest City | Long Beach (18 km) |
| Population Exposed | 19.5M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-17T04:49:00.000Z |
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; Long Island Sound West of New Haven CT/Port Jefferson NY; South Shore Bays from Jones Inlet through Shinnecock Bay; Fire Island Inlet NY to Moriches Inlet NY out 20 nm; Sandy Hook NJ to Fire Island Inlet NY out 20 nm; Waters from Fire Island Inlet NY to Moriches Inlet NY from 20 to 40 NM; Waters from Sandy Hook NJ to Fire Island Inlet out 20 to 40 nm |
| Headline | Special Marine Warning issued March 17 at 12:49AM 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 | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.6abc5f325d3e3bf67fe2227fbf12369f7dae0137.001.1","noaa_urn:oid:2.49.0.1.840.0.07ac053db8f959b3d6e2e719586a593001a7c3f7.001.1","noaa_urn:oid:2.49.0.1.840.0.c6ef2b22cec1bd7dedc31cb900f06ca62d3fe0c6.001.1"] |
| Spc ReportType | wind |
| Spc Speed | 70 |
| Spc Location | 1 NNW Newark Airport |
| Spc County | Essex |
| Spc State | NJ |
| Spc Comments | KEWR ASOS. (OKX) |
| Iem TypeSummary | G |
| Iem Magnitude | 70 |
| Iem Unit | MPH |
| Iem City | 1 NNW Newark Airport |
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 52/100, near Long Beach (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.