š US Weather Warriors MarineCast 2026-05-13
Marine Weather Summary: Marine conditions are currently assessed as hazardous. Active alerts: Small Craft Advisory Forecast text points to a higher-impact marine setup later in the period. Open atlantic waters from lewes to the southern virginia coast looks best sun night with winds S 5 to 10 kt; seas 2 to 3 ft; S winds 5 to 10 kt. Seas 2 to 3 ft. Zone Forecast: Coastal waters..., but conditions worsen... Delaware bay near cape henlopen and cape may looks best sat with winds S 5 to 10 kt; seas 1 foot or less; S winds 5 to 10 kt. Seas 1 foot or less., but conditions worsen by tonight with winds S 15 to 20 kt with gusts... The chesapeake bay and delmarva-facing waters looks best thu night with winds NW 15 kt with gusts to 20 kt; NW winds 15 kt with gusts to 20 kt. Waves 2 ft., but conditions worsen by tonight with winds S 15 to 20 kt...
Atlantic Coastal Waters: ā¢ Summary: Open atlantic waters from lewes to the southern virginia coast looks best sun night with winds S 5 to 10 kt; seas 2 to 3 ft; S winds 5 to 10 kt. Seas 2 to 3 ft. Zone Forecast: Coastal waters..., but conditions worsen by tonight with winds S 15 to 20 kt with gusts up to 25 kt, becoming SW 10 to 15 kt with gusts up to...; gusts 25 kt, becoming SW 10 to 15 kt...; seas 4 to 5 ft, occasionally to 7 ft; A chance of showers after midnight.. Official NWS marine alerts include Small Craft Advisory, Small Craft Advisory, Small Craft Advisory. ā¢ Winds: Lightest winds appear in sun night, while the bumpiest winds show up in tonight with winds S 15 to 20 kt with gusts up to 25 kt, diminishing to 10 to 15 kt after midnight; gusts 25 kt, diminishing to 10 to 15...; seas 4 to 5 ft, occasionally to 7 ft; A chance of showers after midnight.. ā¢ Seas: Highest seas/waves appear in tonight with winds S 15 to 20 kt with gusts up to 25 kt, diminishing to 10 to 15 kt after midnight; gusts 25 kt, diminishing to 10 to 15...; seas 4 to 5 ft, occasionally to 7 ft; A chance of showers after midnight.. ā¢ Visibility / Weather: showers or thunderstorms are in the forecast at times ā¢ Best Window: Sun Night with winds S 5 to 10 kt; seas 2 to 3 ft; S winds 5 to 10 kt. Seas 2 to 3 ft. Zone Forecast: Coastal waters...
Delaware Bay: ā¢ Summary: Delaware bay near cape henlopen and cape may looks best sat with winds S 5 to 10 kt; seas 1 foot or less; S winds 5 to 10 kt. Seas 1 foot or less., but conditions worsen by tonight with winds S 15 to 20 kt with gusts up to 25 kt, becoming SW 10 to 15 kt after midnight; gusts 25 kt, becoming SW 10 to 15 kt...; seas 2 to 4 ft; A chance of showers in the evening, then showers likely after.... Official NWS marine alerts include Small Craft Advisory, Small Craft Advisory, Small Craft Advisory. ā¢ Winds: Lightest winds appear in sat, while the bumpiest winds show up in tonight with winds S 15 to 20 kt with gusts up to 25 kt, becoming SW 10 to 15 kt after midnight; gusts 25 kt, becoming SW 10 to 15 kt...; seas 2 to 4 ft; A chance of showers in the evening, then showers likely after.... ā¢ Waves: Highest seas/waves appear in today with winds S 15 to 20 kt; gusts 30 kt; seas 2 to 4 ft; S winds 15 to 20 kt. Gusts up to 30 kt. Seas 2 to 4 ft. Wave.... ā¢ Visibility / Weather: showers or thunderstorms are in the forecast at times ā¢ Best Window: Sat with winds S 5 to 10 kt; seas 1 foot or less; S winds 5 to 10 kt. Seas 1 foot or less.
Chesapeake Bay: ā¢ Summary: The chesapeake bay and delmarva-facing waters looks best thu night with winds NW 15 kt with gusts to 20 kt; NW winds 15 kt with gusts to 20 kt. Waves 2 ft., but conditions worsen by tonight with winds S 15 to 20 kt with gusts to 25 kt; Showers. Patchy fog.. .MARINE... Southerly flow has increased this morning between low pressure in the Great Lakes and high pressure off the coast. Small Craft Advisories are in effect for all... Official NWS marine alerts include Small Craft Advisory, Small Craft Advisory, Small Craft Advisory. ā¢ Winds: Lightest winds appear in thu night, while the bumpiest winds show up in tonight with winds S 15 to 20 kt with gusts to 25 kt; Showers. Patchy fog.. ā¢ Waves: Highest seas/waves appear in tonight with winds SE 15 to 20 kt with gusts up to 25 kt, becoming S 10 to 15 kt with gusts up to...; gusts 25 kt, becoming S 10 to 15 kt...; A chance of showers after midnight.. ā¢ Visibility / Weather: fog or reduced visibility is mentioned in the official marine text; showers or thunderstorms are in the forecast at times ā¢ Best Window: Thu Night with winds NW 15 kt with gusts to 20 kt; NW winds 15 kt with gusts to 20 kt. Waves 2 ft.
Marine Alerts:
- Small Craft Advisory ā Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 NM; 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; 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 2026-05-13T03:40:00-04:00 2026-05-13T18:00:00-04:00
- Small Craft Advisory ā Delaware Bay waters north of East Point NJ to Slaughter Beach DE; Delaware Bay waters south of East Point NJ to Slaughter Beach DE 2026-05-13T03:40:00-04:00 2026-05-13T18:00:00-04:00
- Small Craft Advisory ā Chesapeake Bay north of Pooles Island MD; Chesapeake Bay from Pooles Island to Sandy Point MD; Chesapeake Bay from Sandy Point to North Beach MD; Chesapeake Bay from North Beach to Drum Point MD; Chesapeake Bay from Drum Point MD to Smith Point VA; Tidal Potomac from Cobb Island MD to Smith Point VA; Patapsco River including Baltimore Harbor; Chester River to Queenstown MD; Eastern Bay; Choptank River to Cambridge MD and the Little Choptank River; Patuxent River to Broomes Island MD; Tangier Sound and the inland waters surrounding Bloodsworth Island 2026-05-13T02:50:00-04:00 2026-05-13T11:00:00-04:00
- Small Craft Advisory ā 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 including the Chesapeake Bay Bridge Tunnel 2026-05-13T06:38:00-04:00 2026-05-13T14:45:00-04:00
Boater Bottom Line: Best boating window looks like Thu Night with winds NW 15 kt with gusts to 20 kt; NW winds 15 kt with gusts to 20 kt. Waves 2 ft.. Worst conditions look like Tonight with winds S 15 to 20 kt with gusts to 25 kt; Showers. Patchy fog.. Marine conditions are currently assessed as hazardous. Active alerts: Small Craft...
Safety: Check the latest official NWS marine forecast before heading out. Conditions can change quickly, especially near storms, inlets, and open water. Boaters should check the latest official NWS marine forecast before heading out. Watch for fast-changing conditions near inlets, bay mouths, bridges, thunderstorms, and coastal fronts. Any watches, warnings, or advisories mentioned here are issued by the National Weather Service. Current marine conditions are classified as hazardous.
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