This alert expired on 15 June 2026 at 04:00 UTC. It is kept here as a record.
It is the 7th strongest of the 78 detections recorded within 20 km of this point since 11 March 2026. The last comparable one was on 27 May 2026.
What the source measured
NOAA reported: Special Marine Warning issued June 14 at 9:53PM EDT until June 15 at 12:00AM EDT by NWS Mount Holly NJ
An estimated 396,278 people live within 50 km of this point.
Nearby, since 11 March 2026
- March 11, 2026 · score 43 · 6.9 km
- August 8, 2026 · score 37 · 7.4 km
- July 9, 2026 · score 43 · 9.4 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 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) | 43 / 100 |
| Our confidence | 81% |
| Coordinates | 39.4718, -75.7863 |
| Nearest City | Middletown (6 km) |
| Population Exposed | 396.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-15T01:53:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.42afe6dd946c95045918857f492d909a |
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; Chesapeake Bay north of Pooles Island MD; Chesapeake Bay from Pooles Island to Sandy Point MD; Patapsco River including Baltimore Harbor; Chester River to Queenstown MD |
| Headline | Special Marine Warning issued June 14 at 9:53PM EDT until June 15 at 12:00AM EDT by NWS Mount Holly NJ |
| Expires | 2026-06-15T00:00:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.42afe6dd946c95045918857f492d909ae5a13a42.001.1","noaa_urn:oid:2.49.0.1.840.0.07f5ebb31d024895dc848b1428ac7f614002d1db.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.
Want to know when something happens near Middletown?
Calamity.live data shows a weather event with CalamityScore 43/100, near Middletown (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 187 scientific monitoring sources.