Severe Severe Storm ● Closed

Special Marine Warning — 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; Waters from Great Egg Inlet NJ to Cape May NJ from 20 to 60 NM; Waters from Cape May NJ to Fenwick I

Event time: Aug 10, 2026 23:49 UTC Last updated: Sep 6, 2026 United States

Icon = what happened · ring colour = how serious: Extreme Severe Moderate Minor

Loading live data… · Marker positions are approximate; severity is labelled in each popup. Sources: USGS, GDACS, NASA EONET, NOAA/NWS, EMSC.

Special Marine Warning issued August 10 at 7:49PM EDT until August 10 at 8:45PM EDT by NWS Mount Holly NJ

Measurements

Coordinates	38.8460, -74.4800
Region	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; Waters from Great Egg Inlet NJ
Expires	2026-08-10T20:45:00-04:00
Nws Urgency	Immediate
Nws Certainty	Likely

Official source

Weather alert data courtesy of NOAA / National Weather Service

This is an official warning issued by the authority named above. Follow its instructions and those of your local emergency services.

Severity as published by US National Weather Service.

View original report

This event as JSON · API and licence

Source updated 70 days ago (Aug 11, 2026 00:32 UTC) · we last heard from US National Weather Service 39 seconds ago

On a slow connection? Low-bandwidth version — no map, no scripts, under 14 KB.

Official authorities in United States

If you are there, these are the bodies whose instructions apply. This site is not an emergency service and does not issue warnings.

More for United States →

Nearby & related events

yellow advisory - frost - in effect — City of Toronto, Canada Moderate Cold Wave Canada monitoring via WMO 2 days ago yellow advisory - frost - in effect — City of Toronto, Canada Moderate Cold Wave Canada monitoring via WMO 2 days ago yellow advisory - frost - in effect — City of Toronto, Canada Moderate Cold Wave Canada monitoring via WMO 2 days ago yellow advisory - frost - in effect — City of Toronto, Canada Moderate Cold Wave Canada monitoring via WMO 2 days ago Special Marine Warning — Chesapeake Bay from Smith Point to Windmill Point VA; Chesapeake Bay from Windmill Point to New Point Comfort VA; Chesapeake Bay from New Point Comfort to Little Creek VA; Chesapeake Bay from Little Creek VA to Cape Henry VA Severe Severe Storm United States monitoring via NWS 3 days ago

Disclaimer: figures are automatic feeds from the named agencies and may be revised. Do not use this page for life-safety decisions — follow official local emergency services.