This alert expired on 17 March 2026 at 06:45 UTC. It is kept here as a record.
It is the 3rd strongest of the 55 detections recorded within 20 km of this point since 17 March 2026.
What the source measured
NOAA reported: Special Marine Warning issued March 17 at 1:13AM EDT until March 17 at 2:45AM EDT by NWS Upton NY
An estimated 152,888 people live within 50 km of this point.
Nearby, since 17 March 2026
- July 5, 2026 · score 43 · 9.9 km
- August 13, 2026 · score 43 · 12.0 km
- July 5, 2026 · score 48 · 18.0 km
How we know
Confirmed by 7 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 89 % 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 | 89% |
| Coordinates | 41.0650, -72.3275 |
| Nearest City | Madison (33 km) |
| Population Exposed | 152.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-17T05:13:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.9bfc973f7cff8e2b8f4e1617eb32e4b6651ed17e.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Long Island Sound East of the Mouth of the Connecticut River; Peconic and Gardiners Bays; South Shore Bays from Jones Inlet through Shinnecock Bay; Moriches Inlet NY to Montauk Point NY out 20 nm; Fire Island Inlet NY to Moriches Inlet NY out 20 nm; Sandy Hook NJ to Fire Island Inlet NY out 20 nm; Waters from Moriches Inlet NY to Montauk Point NY from 20 to 40 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 1:13AM EDT until March 17 at 2:45AM EDT by NWS Upton NY |
| Expires | 2026-03-17T02:45:00-04:00 |
| SenderName | NWS Upton NY |
| HasExactCoords | true |
| Spc ReportType | wind |
| Spc Speed | 64 |
| Spc Location | 4 ENE Plum Island |
| Spc County | Suffolk |
| Spc State | NY |
| Spc Comments | Great Gull Island Mesonet. (OKX) |
| Iem TypeSummary | M |
| Iem Magnitude | 61 |
| Iem Unit | MPH |
| Iem City | 2 SE Watermill |
| Iem County | Suffolk |
| Iem State | NY |
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.
Want to know when something happens near Madison?
Calamity.live data shows a weather event with CalamityScore 43/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 187 scientific monitoring sources.