Right now
The most recent data we hold from NOAA arrived 4 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 7 August 2026 at 23:30 UTC. It is kept here as a record.
It is the 3rd strongest of the 47 detections recorded within 20 km of this point since 12 March 2026. The last comparable one was on 6 July 2026.
What the source measured
NOAA reported: Special Marine Warning issued August 7 at 6:37PM EDT until August 7 at 7:30PM EDT by NWS Mount Holly NJ
Urban PEI: 9,890,316 within a heuristic 50 km radius; not unique people.
Nearby, since 12 March 2026
- August 7, 2026 · score 52 · 0.0 km
- March 12, 2026 · score 52 · 2.1 km
- March 17, 2026 · score 52 · 7.5 km
How we know
7 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 52 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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 |
| Legacy data-support index | 0.88/1 |
| Coordinates | 40.4690, -73.4592 |
| Nearest City | Long Beach (22 km) |
| Urban exposure index (PEI) | 9.9M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-07T22:37:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.0b52ba2dbfeea4c575ffdbd705df846c |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-08-07T22:37:00.000Z.
First archived: 2026-08-07T23:20:39.058Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
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 from 20 to 40 NM; Waters from Manasquan Inlet NJ to Little Egg Inlet NJ 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 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 60 NM; Waters from Sandy Hook NJ to Fire Island Inlet NY out 20 to 60 NM |
| Headline | Special Marine Warning issued August 7 at 6:37PM EDT until August 7 at 7:30PM EDT by NWS Mount Holly NJ |
| Expires | 2026-08-07T19:30:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.0b52ba2dbfeea4c575ffdbd705df846c9a8a293a.001.1","noaa_urn:oid:2.49.0.1.840.0.bd9b18d6633b2d8cbc9f05f3f94959b45b8a8f0d.001.1"] |
| Iem TypeSummary | M |
| Iem Magnitude | 48 |
| Iem Unit | MPH |
| Iem City | 1 S Mamaroneck |
| Iem County | ANZ335 |
| Iem State | NY |
| Iem Wfo | OKX |
| Iem Remark | Mesonet station XLAR Larchmont Harbor. |
| MergedSources | [{"id":"iem_M_40.900_-73.630_1786142520000","source":"iem","severity":"low","severityValue":25,"timestamp":1786142520000,"latitude":40.9,"longitude":-73.63},{"id":"iem_D_40.360_-74.080_1786140780000","source":"iem","severity":"low","severityValue":25,"timestamp":1786140780000,"latitude":40.36,"longitude":-74.08},{"id":"iem_M_40.660_-74.060_1786140000000","source":"iem","severity":"low","severityValue":25,"timestamp":1786140000000,"latitude":40.66,"longitude":-74.06},{"id":"iem_D_40.830_-74.000_1786140000000","source":"iem","severity":"low","severityValue":25,"timestamp":1786140000000,"latitude":40.83,"longitude":-74},{"id":"iem_D_40.680_-73.980_1786141320000","source":"iem","severity":"low","severityValue":25,"timestamp":1786141320000,"latitude":40.68,"longitude":-73.98},{"id":"iem_M_40.920_-73.730_1786141920000","source":"iem","severity":"low","severityValue":25,"timestamp":1786141920000,"latitude":40.92,"longitude":-73.73}] |
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.
Review the area, threshold and delivery channel in your account.
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