Marine Weather Portal map of eastern United States, showing National Weather Service offices that issue marine forecasts.

Coastal and Great Lakes forecasts are subdivided by zone, each identified by text description and a Universal Generic Code (UGC).

NW winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Seas around 2 ft. Wave Detail: NW 2 ft at 3 seconds and SE 1 foot at 5 seconds.

W wind around 5 kt. Seas around 2 ft or less. Wave Detail: W 2 ft at 6 seconds and W 2 ft at 14 seconds. A chance of showers this evening. A slight chance of ...

N winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft, occasionally to 6 ft. Wave Detail: N 5 ft at 7 seconds. Intracoastal waters light chop.

W winds 20 to 25 kt, becoming NW 15 to 20 kt after midnight. Seas 5 to 7 ft, occasionally to 9 ft. Wave Detail: SW 5 ft at 7 seconds and NW 3 ft at 4 seconds.

NW winds 15 to 20 kt with gusts up to 25 kt, becoming W 10 to 15 kt in the afternoon. Seas 4 to 5 ft. Wave Detail: E 5 ft at 7 seconds and NW 2 ft at 3 seconds.

TONIGHT...W wind around 5 kt. Seas around 3 ft. Wave Detail: W 2 ft at 6 seconds and W 2 ft at 14 seconds. A chance of showers early this evening, then a slight ...

Light winds, becoming NW 5 to 10 kt after midnight. Seas 2 to 4 ft. Wave Detail: NW 3 ft at 7 seconds and S 2 ft at 14 seconds. Patchy fog after midnight.

South or southeast 5 to 7, occasionally gale 8, veering southwest 4 or 5 later. Sea state: Slight or moderate in east, moderate or rough in west. Weather: Rain ...