This alert expired on 12 June 2026 at 04:45 UTC. It is kept here as a record.
It is the 8th strongest of the 40 detections recorded within 20 km of this point since 17 March 2026. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued June 11 at 11:52PM EDT until June 12 at 12:45AM EDT by NWS Upton NY
An estimated 15,517,695 people live within 50 km of this point.
Nearby, since 17 March 2026
- August 3, 2026 · score 66 · 11.8 km
- August 10, 2026 · score 52 · 14.8 km
- June 12, 2026 · score 46 · 16.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 46 out of 100, at 80 % 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) | 46 / 100 |
| Our confidence | 80% |
| Coordinates | 40.8147, -73.4131 |
| Nearest City | Melville (3 km) |
| Population Exposed | 15.5M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-12T03:52:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.d772a0280465c2ee1cf8c01ba83d1454 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | 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; Long Island Sound West of New Haven CT/Port Jefferson NY |
| Headline | Special Marine Warning issued June 11 at 11:52PM EDT until June 12 at 12:45AM EDT by NWS Upton NY |
| Expires | 2026-06-12T00:45:00-04:00 |
| SenderName | NWS Upton NY |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.d772a0280465c2ee1cf8c01ba83d1454982941fe.001.1","noaa_urn:oid:2.49.0.1.840.0.89a345fcc5be8886b1f0cf9ed2846a8e52bd3b7e.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 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 Melville?
Calamity.live data shows a weather event with CalamityScore 46/100, near Melville (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 187 scientific monitoring sources.