This alert expired on 8 August 2026 at 20:30 UTC. It is kept here as a record.
It is the 33rd strongest of the 73 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued August 8 at 2:59PM EDT until August 8 at 4:30PM EDT by NWS Mount Holly NJ
An estimated 232,216 people live within 50 km of this point.
Nearby, since 16 March 2026
- May 27, 2026 · score 43 · 6.0 km
- March 16, 2026 · score 43 · 8.1 km
- June 7, 2026 · score 43 · 11.3 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 79 % 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 | 79% |
| Coordinates | 39.2243, -74.8094 |
| Nearest City | Millville (28 km) |
| Population Exposed | 232.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-08T18:59:00.000Z |
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; Delaware Bay waters north of East Point NJ to Slaughter Beach DE; Delaware Bay waters south of East Point NJ to Slaughter Beach DE |
| Headline | Special Marine Warning issued August 8 at 2:59PM EDT until August 8 at 4:30PM EDT by NWS Mount Holly NJ |
| Expires | 2026-08-08T16:30:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.af13e67dfaa29ebd9acf20f8f8834786832e8c14.001.1","noaa_urn:oid:2.49.0.1.840.0.53d05568e78ca56fae354563bc2d8b568b0e0ce0.001.1"] |
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 Millville (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.