This alert expired on 11 June 2026 at 02:00 UTC. It is kept here as a record.
It is the 57th strongest of the 66 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 7 June 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued June 10 at 9:04PM EDT until June 10 at 10:00PM EDT by NWS Mount Holly NJ
Nearby, since 16 March 2026
- June 7, 2026 · score 22 · 19.7 km
- July 29, 2026 · score 46 · 21.5 km
- June 27, 2026 · score 34 · 27.9 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 16 out of 100, at 60 % 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) | 16 / 100 |
| Our confidence | 60% |
| Coordinates | 38.7171, -74.8879 |
| Nearest City | Salisbury (74 km) |
| Impact Tier | minor |
| Timestamp | 2026-06-11T01:04:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.f0a4b3a4ee5c54944ed68b422f03a36b61f06b23.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Delaware Bay waters south of East Point NJ to Slaughter Beach DE; Coastal waters from Great Egg Inlet to Cape May NJ out 20 NM; Coastal waters from Cape May NJ to Cape Henlopen DE out 20 NM; Coastal waters from Cape Henlopen to Fenwick Island DE out 20 NM; Waters from Cape May NJ to Fenwick Island DE from 20 to 60 NM |
| Headline | Special Marine Warning issued June 10 at 9:04PM EDT until June 10 at 10:00PM EDT by NWS Mount Holly NJ |
| Expires | 2026-06-10T22:00:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 16/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.