🌊 US Weather Warriors MarineCast — Tuesday, September 29, 2026
Coastal Flood Advisory remains in effect for Inland Sussex and Delaware Beaches until 2:00 PM EDT; light winds and low waves otherwise favor protected-water trips today.
Today on the Water:
The Coastal Flood Advisory is the main operational concern through 2:00 PM EDT along the Delaware beaches and Inland Sussex.
Delaware Bay and Chesapeake Bay are the calmest options today, with light winds and low waves.
Radar is quiet across Delmarva and offshore waters, with no active cells within 50 nm; showers remain in the forecast at times.
Atlantic Coastal Waters (Lewes → southern VA coast):
Tonight brings SW winds near 5 kt, becoming W late, with seas around 2 ft.
The lighter overnight window is the best coastal-water opportunity; showers are possible at times.
Delaware Bay:
NW winds around 5 kt today with seas 1 foot or less make this the smoothest open-water option.
Conditions stay manageable today, though showers are in the broader forecast.
Chesapeake Bay & Delmarva-facing Waters:
W winds near 5 kt become NW this afternoon, with waves around 1 foot.
High pressure supports light winds through Wednesday; showers may occur at times, but radar currently shows no nearby cells.
Wind & Seas Outlook:
Light winds continue through Wednesday before southerly winds strengthen Thursday. Atlantic seas build to 2 to 4 ft Thursday night with SW winds 10 to 15 kt and gusts up to 20 kt.
The rougher period arrives Saturday night, when east winds reach 15 to 20 kt offshore and seas build to 3 to 4 ft, occasionally 6 ft.
Marine Alerts:
- Coastal Flood Advisory for Inland Sussex and Delaware Beaches until 2:00 PM EDT.
Best Window to be Out: Today on Delaware Bay or Chesapeake Bay, where winds remain near 5 kt and waves stay 1 foot or less.
Worst Window: Saturday night offshore, with east winds 15 to 20 kt and seas 3 to 4 ft, occasionally 6 ft.
Bottom Line: Launch today if you are working protected Bay waters, but account for the Coastal Flood Advisory around Delaware beaches through early afternoon.
— US Weather Warriors #DelmarvaWeather #MarineWeather #BoatingWeather