š US Weather Warriors MarineCast 2026-09-20
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 tonight with winds S 10 to 15 kt, becoming W 5 to 10 kt with gusts up to 15 kt after midnight; gusts 15 kt after midnight; seas around 3 ft; S... Delaware bay near cape henlopen and cape may looks best mon with winds NE 10 to 15 kt; seas around 2 ft; NE winds 10 to 15 kt. Seas around 2 ft. Wave detail: N 1 foot at 3..., but conditions worsen by tue night with... The chesapeake bay and delmarva-facing waters looks best mon with winds NE 10 to 15 kt with gusts to 20 kt; NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft., but conditions worsen by thu night with winds NE 30...
Atlantic Coastal Waters: ā¢ Summary: Open atlantic waters from lewes to the southern virginia coast looks best tonight with winds S 10 to 15 kt, becoming W 5 to 10 kt with gusts up to 15 kt after midnight; gusts 15 kt after midnight; seas around 3 ft; S winds 10 to 15 kt, becoming W 5 to 10 kt with gusts up to 15 kt..., but conditions worsen by thu with winds NE 30 to 35 kt with gusts up to 45 kt; gusts 45 kt; seas 11 to 13 ft, occasionally to 19 ft; A chance of showers.. Official NWS marine alerts include Small Craft Advisory, Small Craft Advisory. ā¢ Winds: Lightest winds appear in tonight, while the bumpiest winds show up in wed night with winds NE 30 to 35 kt with gusts up to 45 kt; gusts 45 kt; seas 11 to 13 ft, occasionally to 19 ft; A chance of showers.. ā¢ Seas: Highest seas/waves appear in wed night with winds NE 30 to 35 kt with gusts up to 45 kt; gusts 45 kt; seas 11 to 13 ft, occasionally to 19 ft; A chance of showers.. ā¢ Visibility / Weather: showers or thunderstorms are in the forecast at times ā¢ Best Window: Tonight with winds S 10 to 15 kt, becoming W 5 to 10 kt with gusts up to 15 kt after midnight; gusts 15 kt after midnight; seas around 3 ft; S winds 10 to 15 kt, becoming W 5 to 10 kt with gusts up to 15 kt...
Delaware Bay: ā¢ Summary: Delaware bay near cape henlopen and cape may looks best mon with winds NE 10 to 15 kt; seas around 2 ft; NE winds 10 to 15 kt. Seas around 2 ft. Wave detail: N 1 foot at 3..., but conditions worsen by tue night with winds NE 20 to 25 kt with gusts up to 35 kt; gusts 35 kt; seas 3 to 5 ft; Showers likely, mainly in the evening.. Official NWS marine alerts include Small Craft Advisory, Small Craft Advisory. ā¢ Winds: Lightest winds appear in mon, while the bumpiest winds show up in tue night with winds NE 20 to 25 kt with gusts up to 35 kt; gusts 35 kt; seas 3 to 5 ft; Showers likely, mainly in the evening.. ā¢ Waves: Highest seas/waves appear in tue night with winds NE 20 to 25 kt with gusts up to 35 kt; gusts 35 kt; seas 3 to 5 ft; Showers likely, mainly in the evening.. ā¢ Visibility / Weather: showers or thunderstorms are in the forecast at times ā¢ Best Window: Mon with winds NE 10 to 15 kt; seas around 2 ft; NE winds 10 to 15 kt. Seas around 2 ft. Wave detail: N 1 foot at 3...
Chesapeake Bay: ā¢ Summary: The chesapeake bay and delmarva-facing waters looks best mon with winds NE 10 to 15 kt with gusts to 20 kt; NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft., but conditions worsen by thu night with winds NE 30 to 35 kt with gusts up to 45 kt, becoming N 25 to 30 kt with gusts up to...; gusts 45 kt, becoming N 25 to 30 kt...; Showers likely, mainly in the evening.. .MARINE... Small Craft Advisories continue for the Bay and Lower Tidal Potomac within southerly flow through 1 PM. Winds decrease slightly and shift to out of the southwest... Official NWS marine alerts include Small Craft Advisory, Small Craft Advisory. ā¢ Winds: Lightest winds appear in mon, while the bumpiest winds show up in wed night with winds NE 30 to 35 kt with gusts up to 45 kt; gusts 45 kt; Showers likely.. ā¢ Waves: Highest seas/waves appear in tue night with winds NE 20 to 25 kt, increasing to 25 to 30 kt after midnight; gusts 35 kt; Showers likely.. ā¢ Visibility / Weather: showers or thunderstorms are in the forecast at times ā¢ Best Window: Mon with winds NE 10 to 15 kt with gusts to 20 kt; NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Marine Alerts:
- Small Craft Advisory ā Chesapeake Bay north of Pooles Island MD 2026-09-20T00:06:00-04:00 2026-09-20T08:15:00-04:00
- Small Craft Advisory ā 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 2026-09-20T00:06:00-04:00 2026-09-20T08:15:00-04:00
Boater Bottom Line: Best boating window looks like Mon with winds NE 10 to 15 kt; seas around 2 ft; NE winds 10 to 15 kt. Seas around 2 ft. Wave detail: N 1 foot at 3.... Worst conditions look like Thu with winds NE 30 to 35 kt with gusts up to 45 kt; gusts 45 kt; seas 11 to 13 ft, occasionally to 19 ft; A chance of showers.. Marine...
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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