This alert expired on 5 July 2026 at 02:45 UTC. It is kept here as a record.
It is the 5th strongest of the 22 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 July 4 at 9:09PM EDT until July 4 at 10:45PM EDT by NWS Upton NY
An estimated 682,334 people live within 50 km of this point.
Nearby, since 17 March 2026
- August 13, 2026 · score 52 · 7.7 km
- August 13, 2026 · score 48 · 14.8 km
- August 13, 2026 · score 52 · 17.4 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 48 out of 100, at 85 % 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) | 48 / 100 |
| Our confidence | 85% |
| Coordinates | 41.0945, -72.5386 |
| Nearest City | Madison (21 km) |
| Population Exposed | 682.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-05T01:09:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.6a042bc23fcfc69ebd8b257696ba76e3 |
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; Waters from Moriches Inlet NY to Montauk Point NY from 20 to 60 NM; Waters from Fire Island Inlet NY to Moriches Inlet NY from 20 to 60 NM; Long Island Sound East of New Haven CT/Port Jefferson NY to the Mouth of the Connecticut River; Long Island Sound East of the Mouth of the Connecticut River; Long Island Sound West of New Haven CT/Port Jefferson NY; Peconic and Gardiners Bays |
| Headline | Special Marine Warning issued July 4 at 9:09PM EDT until July 4 at 10:45PM EDT by NWS Upton NY |
| Expires | 2026-07-04T22:45:00-04:00 |
| SenderName | NWS Upton NY |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.6a042bc23fcfc69ebd8b257696ba76e3b72d6a11.001.1","noaa_urn:oid:2.49.0.1.840.0.93615c301d0fc3f2ddff9b2c95cbc48396e61cf6.001.1"] |
| Iem TypeSummary | M |
| Iem Magnitude | 67 |
| Iem Unit | MPH |
| Iem City | 1 WNW Northport |
| Iem County | ANZ335 |
| Iem State | NY |
| Iem Wfo | OKX |
| Iem Remark | Northport Yacht Club Mesonet. |
| MergedSources | [{"id":"iem_M_40.910_-73.360_1783212600000","source":"iem","severity":"low","severityValue":25,"timestamp":1783212600000,"latitude":40.91,"longitude":-73.36}] |
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 48/100, near Madison (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.