This alert expired on 17 July 2026 at 02:30 UTC. It is kept here as a record.
It is the 30th strongest of the 59 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued July 16 at 9:24PM EDT until July 16 at 10:30PM EDT by NWS Mount Holly NJ
An estimated 146,367 people live within 50 km of this point.
Nearby, since 16 March 2026
- June 7, 2026 · score 43 · 6.6 km
- March 16, 2026 · score 43 · 9.8 km
- May 27, 2026 · score 43 · 14.1 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, at 81 % 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) | 37 / 100 |
| Our confidence | 81% |
| Coordinates | 39.1727, -74.6134 |
| Nearest City | Pleasantville (25 km) |
| Population Exposed | 146.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-17T01:24:00.000Z |
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 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 and 1 more areas |
| Headline | Special Marine Warning issued July 16 at 9:24PM EDT until July 16 at 10:30PM EDT by NWS Mount Holly NJ |
| Expires | 2026-07-16T22:30:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.4362df9c574c88f877047913f5a2d04da380956d.001.1","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:2.49.0.1.840.0.93ed28e5ac4da054da3a0d5a19b8cdda7798e2f6.001.1"] |
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 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 37/100, near Pleasantville (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.