Right now
The most recent data we hold from NOAA arrived 5 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 05:15 UTC. It is kept here as a record.
It is the 2nd strongest of the 77 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 12:18AM EDT until March 17 at 1:15AM EDT by NWS Upton NY
An estimated 8,942,353 people live within 50 km of this point.
Nearby, since 12 March 2026
- March 17, 2026 · score 52 · 2.8 km
- July 15, 2026 · score 52 · 5.2 km
- March 12, 2026 · score 52 · 5.4 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 52 out of 100, at 78 % 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) | 52 / 100 |
| Our confidence | 78% |
| Coordinates | 40.2690, -73.7724 |
| Nearest City | Long Branch (19 km) |
| Population Exposed | 8.9M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-17T04:18:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.07ac053db8f959b3d6e2e719586a5930 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | 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; 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 2 more areas |
| Headline | Special Marine Warning issued March 17 at 12:18AM EDT until March 17 at 1:15AM EDT by NWS Upton NY |
| Expires | 2026-03-17T01:15:00-04:00 |
| SenderName | NWS Upton NY |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.07ac053db8f959b3d6e2e719586a593001a7c3f7.001.1","noaa_urn:oid:2.49.0.1.840.0.c6ef2b22cec1bd7dedc31cb900f06ca62d3fe0c6.001.1","noaa_urn:oid:2.49.0.1.840.0.4385b360f263e332bd5b49dcd017029e9d856400.001.1","noaa_urn:oid:2.49.0.1.840.0.f433aea624b6bf70736d6004b602c1bad204a9b2.001.1","noaa_urn:oid:2.49.0.1.840.0.58dad4de79ecab41e0dab42ae9072c8046e3c146.001.1"] |
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 Long Branch?
Calamity.live data shows a weather event with CalamityScore 52/100, near Long Branch (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.