Right now
The most recent data we hold from NOAA arrived 26 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 4 July 2026 at 02:45 UTC. It is kept here as a record.
It is the 14th strongest of the 57 detections recorded within 20 km of this point since 17 March 2026. The last comparable one was on 7 June 2026. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued July 3 at 9:20PM EDT until July 3 at 10:45PM EDT by NWS Mount Holly NJ
Urban PEI: 76,157 within a heuristic 50 km radius; not unique people.
Nearby, since 17 March 2026
- March 17, 2026 · score 43 · 13.6 km
- August 8, 2026 · score 37 · 15.7 km
- July 17, 2026 · score 63 · 15.7 km
How we know
8 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 39 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) | 39 / 100 |
| Legacy data-support index | 0.90/1 |
| Coordinates | 39.3695, -74.3505 |
| Nearest City | Atlantic City (6 km) |
| Urban exposure index (PEI) | 76.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-04T01:20:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.bf7a0348c0577693fcd5e7cd45dcda8e078eb907.001.1 |
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: 2026-07-04T01:20:00.000Z.
First archived: 2026-07-04T02:25:03.089Z. 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 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 from 20 to 60 NM; Waters from Little Egg Inlet NJ to Great Egg Inlet NJ from 20 to 60 NM; Waters from Great Egg Inlet NJ to Cape May NJ from 20 to 60 NM |
| Headline | Special Marine Warning issued July 3 at 9:20PM EDT until July 3 at 10:45PM EDT by NWS Mount Holly NJ |
| Expires | 2026-07-03T22:45:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
| Iem TypeSummary | M |
| Iem Magnitude | 54 |
| Iem Unit | MPH |
| Iem City | 1 ENE Barnegat Light |
| Iem County | ANZ451 |
| Iem State | NJ |
| Iem Wfo | PHI |
| Iem Remark | Barnegat Inlet Light mesonet. |
| MergedSources | [{"id":"iem_M_39.940_-74.070_1783126140000","source":"iem","severity":"low","severityValue":25,"timestamp":1783126140000,"latitude":39.94,"longitude":-74.07},{"id":"iem_M_39.840_-74.080_1783127040000","source":"iem","severity":"low","severityValue":25,"timestamp":1783127040000,"latitude":39.84,"longitude":-74.08},{"id":"iem_M_39.860_-74.130_1783126860000","source":"iem","severity":"low","severityValue":25,"timestamp":1783126860000,"latitude":39.86,"longitude":-74.13},{"id":"iem_M_40.000_-74.050_1783125780000","source":"iem","severity":"low","severityValue":25,"timestamp":1783125780000,"latitude":40,"longitude":-74.05},{"id":"iem_M_39.650_-74.210_1783128240000","source":"iem","severity":"low","severityValue":25,"timestamp":1783128240000,"latitude":39.65,"longitude":-74.21},{"id":"iem_M_39.800_-74.140_1783127040000","source":"iem","severity":"low","severityValue":25,"timestamp":1783127040000,"latitude":39.8,"longitude":-74.14},{"id":"iem_M_39.760_-74.090_1783127340000","source":"iem","severity":"low","severityValue":25,"timestamp":1783127340000,"latitude":39.76,"longitude":-74.09}] |
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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