This alert expired on 27 May 2026 at 18:15 UTC. It is kept here as a record.
It is the 2nd strongest of the 79 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued May 27 at 12:20PM EDT until May 27 at 2:15PM EDT by NWS Mount Holly NJ
An estimated 232,216 people live within 50 km of this point.
Nearby, since 16 March 2026
- March 16, 2026 · score 43 · 5.5 km
- August 8, 2026 · score 37 · 6.0 km
- June 7, 2026 · score 43 · 8.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 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) | 43 / 100 |
| Our confidence | 79% |
| Coordinates | 39.2462, -74.7462 |
| Nearest City | Pleasantville (25 km) |
| Population Exposed | 232.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-27T16:20:00.000Z |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Delaware Bay waters north of East Point NJ to Slaughter Beach DE; Delaware Bay waters south of East Point NJ to Slaughter Beach DE; 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 May 27 at 12:20PM EDT until May 27 at 2:15PM EDT by NWS Mount Holly NJ |
| Expires | 2026-05-27T14:15:00-04:00 |
| 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.
Calamity.live data shows a weather event with CalamityScore 43/100, near Pleasantville (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.