Right now
The most recent data we hold from NOAA arrived 3 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 17 July 2026 at 02:45 UTC. It is kept here as a record.
It is the 35th strongest of the 74 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 5 July 2026. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued July 16 at 9:08PM EDT until July 16 at 10:45PM EDT by NWS Mount Holly NJ
Urban PEI: 207,185 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- July 17, 2026 · score 37 · 2.2 km
- June 7, 2026 · score 43 · 5.4 km
- March 16, 2026 · score 43 · 8.4 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 37 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) | 37 / 100 |
| Legacy data-support index | 0.81/1 |
| Coordinates | 39.1911, -74.6234 |
| Nearest City | Pleasantville (24 km) |
| Urban exposure index (PEI) | 207.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-17T01:08:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.ad3dc524bc2d60745727fb8a718b79f5 |
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: 2026-07-17T01:08:00.000Z.
First archived: 2026-07-17T01:21:04.342Z. 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 Great Egg Inlet to Cape May NJ out 20 NM; Waters from Great Egg Inlet NJ to Cape May NJ from 20 to 60 NM; Chesapeake Bay from Pooles Island to Sandy Point MD; Chesapeake Bay from Sandy Point to North Beach MD; Chester River to Queenstown MD; Eastern Bay; 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 and 1 more areas |
| Headline | Special Marine Warning issued July 16 at 9:08PM EDT until July 16 at 10:45PM EDT by NWS Mount Holly NJ |
| Expires | 2026-07-16T22:45:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.ad3dc524bc2d60745727fb8a718b79f57cc9bdff.001.1","noaa_urn:oid:2.49.0.1.840.0.2b6d7b0a6ccfeaa8c1364229824502e1e175d4ba.001.1","noaa_urn:oid:2.49.0.1.840.0.ee3c7222e42d5f4464d15b86dfb0265c489e051b.001.1","noaa_urn:oid:2.49.0.1.840.0.93ed28e5ac4da054da3a0d5a19b8cdda7798e2f6.001.1"] |
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 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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