US Marine Forecasts

NWS coastal waters forecasts for 537 marine zones across 28 states.

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Coastal forecast register

Published coastal conditions, sorted by name

Forecast zoneForecast zone	StateState	Wind nowWind now	Seas / advisorySeas / advisory
5NM East of Mackinac Bridge to Presque Isle Light MI	MI	NW 12 kt	0.7 ft
Adak to Kiska Bering Side	AK	S 4 kt	Small Craft Advisory
Adak to Kiska Pacific Side	AK	S 4 kt	Small Craft Advisory
Admiralty Inlet	WA	E 8 kt	1.0 ft
Albemarle Sound	NC	SW 4 kt	2.0 ft
Alenuihaha Channel	HI	ENE 15 kt	7.2 ft
Alligator River	NC	SSW 6 kt	—
Altamaha Sound to Fernandina Beach	FL	N 5 kt	1.3 ft
Apalachee Bay or Coastal Waters From Keaton Beach to Ochlockonee River	FL	W 7 kt	—
Atchafalaya and East Cote Blanche Bays	LA	SSE 2 kt	—
Avon Point to Willowick	OH	SSW 16 kt	1.3 ft
Baffin Bay and Upper Laguna Madre	TX	ESE 15 kt	—
Baffin Bay to Port Aransas	TX	SSE 12 kt	4.3 ft
Baffin Bay to Port Mansfield	TX	SSE 18 kt	4.3 ft
Barataria Bay	LA	E 5 kt	1.6 ft
Barren Islands East	AK	WSW 4 kt	Gale Warning
Bayside and Gulfside from Craig Key to West End of Seven Mile Bridge	FL	ENE 9 kt	2.0 ft
Big Island Leeward	HI	WNW 4 kt	6.9 ft
Big Island Southeast	HI	NNE 4 kt	6.9 ft
Big Island Windward	HI	NNE 4 kt	6.9 ft
Biscayne Bay	FL	NE 11 kt	—
Black River To Ontonagon	MI	N 5 kt	2.6 ft
Block Island Sound	RI	S 7 kt	Small Craft Advisory
Bonita Beach to Englewood	FL	ENE 4 kt	1.0 ft
Bonita Beach to Englewood FL out 20	FL	NNE 7 kt	1.0 ft
Boothville LA to Southwest Pass of the Mississippi River	LA	ESE 4 kt	1.6 ft
Boston Harbor	MA	SSE 2 kt	2.0 ft
Breton Sound	LA	SE 6 kt	1.6 ft
Bristol Bay from Cape Chichagof to Cape Pierce	AK	N 2 kt	Small Craft Advisory
Bristol Bay from Port Heiden to Cape Chichagof	AK	SSE 5 kt	Gale Warning
Burns Harbor to Michigan City	IN	N 6 kt	1.0 ft
Buzzards Bay	MA	SSW 11 kt	Small Craft Advisory
Calcasieu Lake	LA	SSE 9 kt	—
Calumet Harbor IL to Gary	IL	WSW 8 kt	0.7 ft
Cameron LA to High Island	TX	SSE 12 kt	—
Cape Beaufort to Point Franklin	AK	N 10 kt	—
Cape Blanco OR to Point St. George	OR	SSE 4 kt	Small Craft Advisory
Cape Charles Light to Virginia-North Carolina border	VA	SE 8 kt	2.0 ft
Cape Cleare to Gore Point	AK	N 13 kt	Small Craft Advisory
Cape Cod Bay	MA	ESE 1 kt	Small Craft Advisory
Cape Decision to Cape Edgecumbe	AK	SE 2 kt	Small Craft Advisory
Cape Edgecumbe to Cape Spencer	AK	S 3 kt	Small Craft Advisory
Cape Elizabeth	ME	N 5 kt	Small Craft Advisory
Cape Espenberg to Motherwood Point	AK	E 2 kt	—
Cape Fairweather to Icy Cape	AK	E 23 kt	Small Craft Advisory
Cape Falcon to Cape Foulweather	OR	NE 2 kt	4.3 ft
Cape Fear NC to Little River Inlet	NC	S 4 kt	1.0 ft
Cape Flattery To James Island	WA	ESE 4 kt	1.0 ft
Cape Flattery To James Island 10	WA	E 10 kt	5.2 ft
Cape Foulweather to Florence	OR	NE 2 kt	4.9 ft
Cape Halkett to Flaxman Island	AK	NNE 13 kt	—
Cape Henlopen to Fenwick Island	DE	W 9 kt	1.6 ft
Cape Krusenstern to Cape Thompson	AK	NNE 8 kt	Small Craft Advisory
Cape May NJ to Cape Henlopen	NJ	SSE 8 kt	1.6 ft
Cape Mendocino to Point Arena	CA	NNW 10 kt	7.9 ft
Cape Shoalwater WA to Cape Falcon	WA	E 1 kt	3.6 ft
Cape Spencer to Cape Fairweather	AK	E 9 kt	Small Craft Advisory
Cape Stephens to Moses Point	AK	—	—
Cape Suckling to Gravel Point	AK	S 4 kt	Small Craft Advisory
Cape Thompson to Cape Beaufort	AK	NNE 8 kt	Small Craft Advisory
Cape Tolstoi to Cape Sarichef	AK	NE 6 kt	Small Craft Advisory
Casco Bay	ME	N 11 kt	Small Craft Advisory
Castle Cape to Cape Tolstoi	AK	ENE 3 kt	Gale Warning
Central US Waters Strait Of Juan De Fuca	WA	N 2 kt	1.0 ft
Central and Eastern Prince William Sound	AK	E 21 kt	Small Craft Advisory
Chandeleur Sound	LA	SE 6 kt	1.0 ft
Charleston Harbor	SC	SSE 4 kt	—
Charlotte Harbor and Pine Island Sound	FL	ENE 4 kt	—
Chequamegon Bay-Bayfield to Oak Point	WI	NNE 3 kt	—
Chesapeake Bay from Drum Point MD to Smith Point	MD	S 10 kt	Marine Weather Statement
Chesapeake Bay from Little Creek VA to Cape Henry VA	VA	SE 8 kt	0.7 ft
Chesapeake Bay from New Point Comfort to Little Creek	VA	SE 6 kt	0.3 ft
Chesapeake Bay from North Beach to Drum Point	MD	SSE 12 kt	Marine Weather Statement
Chesapeake Bay from Pooles Island to Sandy Point	MD	SSW 9 kt	Marine Weather Statement
Chesapeake Bay from Sandy Point to North Beach	MD	S 14 kt	Marine Weather Statement
Chesapeake Bay from Smith Point to Windmill Point	VA	S 11 kt	1.6 ft
Chesapeake Bay from Windmill Point to New Point Comfort	VA	S 11 kt	1.6 ft
Chesapeake Bay north of Pooles Island	MD	SW 5 kt	0.7 ft
Chester River to Queenstown	MD	S 12 kt	Marine Weather Statement
Chincoteague to Parramore Island	VA	SW 10 kt	1.6 ft
Chiniak Bay	AK	S 1 kt	Gale Warning
Chokoloskee to Bonita Beach	FL	E 5 kt	1.6 ft
Choptank River to Cambridge MD and the Little Choptank River	MD	S 5 kt	Marine Weather Statement
Clarence Strait	AK	NE 2 kt	Small Craft Advisory
Coastal Waters extending South of Marthas Vineyard and Nantucket	MA	SE 10 kt	Small Craft Advisory
Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary	MA	SSE 16 kt	Small Craft Advisory
Coastal waters from Savannah GA to Altamaha Sound GA, including Grays Reef National Marine Sanctuary	GA	N 5 kt	1.3 ft
Columbia River Bar	OR	E 1 kt	3.6 ft
Conneaut OH to Ripley	OH	SW 2 kt	Small Craft Advisory
Cook Inlet Kalgin Island to Point Bede	AK	E 5 kt	Small Craft Advisory
Cook Inlet North Kalgin Island	AK	NNE 4 kt	Small Craft Advisory
Copano, Aransas, and Redfish Bays	TX	SSE 10 kt	—
Corpus Christi and Nueces Bays	TX	SSE 12 kt	—
Croatan and Roanoke Sounds	NC	SSW 6 kt	—
Cross Sound	AK	ENE 6 kt	Small Craft Advisory
Currituck Sound	NC	SW 4 kt	2.0 ft
Dall Point to Kwikpak Pass	AK	—	—
Deerfield Beach to Ocean Reef	FL	NE 11 kt	1.6 ft
Delaware Bay waters north of East Point NJ to Slaughter Beach	NJ	SE 12 kt	0.7 ft
Delaware Bay waters south of East Point NJ to Slaughter Beach	NJ	S 11 kt	1.6 ft
Dixon Entrance to Cape Decision	AK	S 5 kt	Small Craft Advisory
Duluth MN to Port Wing	MN	SW 4 kt	—
Dunkirk to Buffalo	NY	SW 16 kt	Small Craft Advisory
Eagle River to Manitou Island	MI	NNE 9 kt	2.6 ft
East Cape Sable to Chokoloskee	FL	E 8 kt	1.6 ft
East Entrance US Waters Strait Of Juan De Fuca	WA	E 8 kt	1.0 ft
East Santa Barbara Channel from Point Conception to Point Mugu CA	CA	SSW 7 kt	Small Craft Advisory
Eastern Bay	MD	S 14 kt	Marine Weather Statement
Eastern Choctawhatchee Bay	FL	SW 8 kt	—
Eastport, ME to Schoodic Point	ME	E 3 kt	Small Craft Advisory
Edisto Beach SC to Savannah	SC	NNE 4 kt	1.0 ft
Englewood to Tarpon Springs	FL	N 7 kt	1.0 ft
Englewood to Tarpon Springs FL out 20	FL	NE 4 kt	1.0 ft
Etolin Strait to Dall Point	AK	—	—
Fenwick Island DE to Chincoteague	MD	SSW 9 kt	1.6 ft
Fernandina Beach to St. Augustine	FL	NE 7 kt	1.6 ft
Fire Island Inlet NY to Moriches Inlet	NY	SSE 6 kt	Small Craft Advisory
Flagler Beach to Volusia-Brevard County Line	FL	NE 5 kt	2.0 ft
Flagler Beach to Volusia-Brevard County Line 20-60	FL	NNE 6 kt	2.0 ft
Flaxman Island to Demarcation Point	AK	NE 9 kt	—
Florence to Cape Blanco	OR	N 2 kt	4.9 ft
Florida Bay	FL	E 8 kt	—
Frederick Sound	AK	NNE 6 kt	Small Craft Advisory
Freeport to Matagorda Ship Channel	TX	SSE 12 kt	4.3 ft
Galveston Bay	TX	SSE 13 kt	—
Gary to Burns Harbor	IN	N 6 kt	1.0 ft
Geneva-on-the-Lake to Conneaut	OH	WSW 8 kt	Small Craft Advisory
Glacier Bay	AK	NNW 3 kt	—
Grand Haven to Whitehall	MI	N 13 kt	2.3 ft
Grand Marais to Taconite Harbor	MN	WSW 10 kt	2.6 ft
Grand Marais to Whitefish Point	MI	NW 13 kt	1.3 ft
Grand Portage to Grand Marais	MN	WSW 10 kt	2.6 ft
Grand Traverse Bay south of a line Grand Traverse Light to Norwood	MI	W 18 kt	2.3 ft
Gravel Point to Cape Cleare	AK	E 16 kt	Small Craft Advisory
Grays Harbor Bar	WA	SSW 3 kt	3.6 ft
Great Egg Inlet to Cape May	NJ	SSE 8 kt	1.6 ft
Gulf of Mexico from West End of Seven Mile Bridge to Halfmoon Shoal	FL	NE 11 kt	2.0 ft
Gulf of Mexico including Dry Tortugas and Rebecca Shoal Channel	FL	ENE 12 kt	2.0 ft
Hamlin Beach to Sodus Bay	NY	WSW 13 kt	1.0 ft
Harbor Beach to Port Sanilac	MI	W 18 kt	Small Craft Advisory
Hawk Channel from Craig Key to west end of Seven Mile Bridge	FL	ENE 9 kt	2.0 ft
Hawk Channel from Ocean Reef to Craig Key	FL	E 8 kt	1.6 ft
Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal	FL	NE 11 kt	2.0 ft
High Island to Freeport	TX	SSE 8 kt	—
Holland to Grand Haven	MI	SW 6 kt	2.3 ft
Huron Islands to Marquette	MI	N 6 kt	3.3 ft
Icy Cape to Cape Suckling	AK	E 23 kt	Gale Warning
Icy Strait	AK	NNW 3 kt	Small Craft Advisory
Inner Saginaw Bay SW of Point Au Gres to Bay Port	MI	W 17 kt	Small Craft Advisory
Intra Coastal Waters from Schoodic Point	ME	SE 12 kt	Small Craft Advisory
Intracoastal City to Cameron	LA	ESE 11 kt	—
James Island To Point Grenville	WA	ESE 4 kt	1.0 ft
James Island To Point Grenville 10	WA	SSE 6 kt	3.6 ft
James River from JRB to HRBT	VA	NE 2 kt	0.7 ft
James River from Jamestown to the James River Bridge	VA	SW 3 kt	0.3 ft
Jupiter Inlet to Deerfield Beach	FL	NE 9 kt	1.6 ft
Kachemak Bay	AK	E 3 kt	1.0 ft
Kaiwi Channel	HI	ESE 7 kt	5.6 ft
Kauai Channel	HI	E 8 kt	5.6 ft
Kauai Leeward	HI	E 8 kt	5.6 ft
Kauai Northwest	HI	E 8 kt	5.6 ft
Kauai Windward	HI	E 8 kt	5.6 ft
Kiska to Attu Bering Side	AK	—	Small Craft Advisory
Kiska to Attu Pacific Side	AK	—	Small Craft Advisory
Kuskokwim Delta and Etolin Strait	AK	S 7 kt	—
Kwikpak Pass to Cape Stephens	AK	NE 11 kt	—
Laguna Madre From 5 nm North Of Port Mansfield To Baffin Bay	TX	SSE 18 kt	—
Laguna Madre From The Arroyo Colorado North Of Port Mansfield	TX	SSE 17 kt	—
Laguna Madre From the Port Of Brownsville to the Arroyo	TX	SSE 17 kt	—
Lake Borgne	LA	SE 6 kt	1.0 ft
Lake Huron from Harbor Beach to Port Sanilac to the border	MI	W 18 kt	1.0 ft
Lake Huron from Port Austin to Harbor Beach	MI	W 7 kt	1.0 ft
Lake Huron from Port Sanilac to Port Huron to the border	MI	W 12 kt	1.3 ft
Lake Huron from Presque Isle Lt. to Sturgeon Point MI to the border	MI	NNW 3 kt	2.3 ft
Lake Huron from Sturgeon Point to Alabaster MI to the border	MI	W 15 kt	2.3 ft
Lake Maurepas	LA	NNE 9 kt	1.6 ft
Lake Michigan Michigan City IN to St. Joseph MI to mid-line of lake	IN	W 2 kt	1.0 ft
Lake Michigan from Charlevoix to Point Betsie	MI	W 18 kt	2.3 ft
Lake Michigan from Grand Haven to Whitehall	MI	N 13 kt	2.3 ft
Lake Michigan from Holland to Grand Haven	MI	SW 6 kt	2.3 ft
Lake Michigan from North Point Light to Wind Point	WI	W 8 kt	0.7 ft
Lake Michigan from Pentwater to Manistee	MI	WNW 14 kt	2.6 ft
Lake Michigan from Point Betsie to Manistee	MI	WNW 14 kt	2.3 ft
Lake Michigan from Port Washington to North Point Light	WI	NW 8 kt	0.7 ft
Lake Michigan from Rock Island Passage to Sturgeon Bay	WI	W 10 kt	2.3 ft
Lake Michigan from Seul Choix Point to Rock Island Passage	MI	NW 7 kt	2.3 ft
Lake Michigan from Sheboygan to Port Washington	WI	W 11 kt	0.7 ft
Lake Michigan from South Haven to Holland	MI	SSW 8 kt	1.6 ft
Lake Michigan from St. Joseph to South Haven	MI	SSW 6 kt	1.6 ft
Lake Michigan from Sturgeon Bay to Two Rivers	WI	WNW 9 kt	2.6 ft
Lake Michigan from Two Rivers to Sheboygan	WI	W 11 kt	2.6 ft
Lake Michigan from Whitehall to Pentwater	MI	W 6 kt	2.6 ft
Lake Michigan from Wilmette Harbor to Michigan City	IL	WSW 8 kt	0.7 ft
Lake Michigan from Wind Point WI to Winthrop Harbor	WI	W 10 kt	0.3 ft
Lake Michigan from Winthrop Harbor to Wilmette Harbor	IL	W 10 kt	0.3 ft
Lake Okeechobee	FL	NE 9 kt	—
Lake Pontchartrain	LA	NNE 9 kt	1.6 ft
Lake Salvador and Lake Cataouatche	LA	NNE 9 kt	1.6 ft
Lake St. Clair Open Lake	MI	WSW 10 kt	1.0 ft
Lake Superior from Grand Marais MI to Whitefish Point	MI	NW 13 kt	1.3 ft
Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI	MI	N 6 kt	2.6 ft
Lake Superior from Upper Entrance to Portage Canal to Manitou Island	MI	NNW 9 kt	2.6 ft
Little Egg Inlet to Great Egg Inlet	NJ	SE 6 kt	2.3 ft
Little River Inlet to Murrells Inlet	SC	S 7 kt	1.0 ft
Long Island Sound (east of New Haven)	CT	SSE 8 kt	2.3 ft
Long Island Sound (east of the Connecticut River)	NY	SSE 8 kt	3.6 ft
Long Island Sound (west of New Haven)	NY	SSE 7 kt	2.3 ft
Lower Atchafalaya River to Intracoastal City	LA	S 12 kt	—
Lower Niagara River	NY	SW 17 kt	Small Craft Advisory
Maalaea Bay	HI	ENE 15 kt	—
Manasquan Inlet to Little Egg Inlet	NJ	SE 6 kt	2.3 ft
Manistee to Point Betsie	MI	WNW 14 kt	2.3 ft
Manitou Island to Point Isabelle	MI	NNE 9 kt	2.6 ft
Marmot Bay	AK	N 1 kt	Gale Warning
Marmot Island to Sitkinak	AK	S 1 kt	Gale Warning
Marquette to Munising	MI	N 11 kt	3.3 ft
Massachusetts Bay and Ipswich Bay	MA	SSE 16 kt	5.9 ft
Matagorda Bay	TX	S 10 kt	—
Maui County Leeward	HI	ENE 15 kt	7.2 ft
Maui County Windward	HI	ENE 15 kt	7.2 ft
Maumee Bay to Reno Beach	OH	S 14 kt	1.6 ft
Mexico Bay NY to the St. Lawrence River	NY	ESE 4 kt	1.0 ft
Mexico Beach to Apalachicola	FL	SSE 6 kt	—
Michigan City IN to New Buffalo	IN	NNE 5 kt	1.0 ft
Michigan Waters of Lake Erie from Detroit River to North Cape	MI	S 14 kt	1.6 ft
Mississippi Sound	AL	S 5 kt	1.0 ft
Mississippi Sound	MS	SE 5 kt	1.0 ft
Montauk NY to Marthas Vineyard	NY	SSE 7 kt	Small Craft Advisory
Monterey Bay	CA	E 4 kt	4.9 ft
Moriches Inlet NY to Montauk Point	NY	SSE 8 kt	Small Craft Advisory
Moses Point to Sledge Island	AK	ENE 8 kt	—
Motherwood Point to Cape Krusenstern	AK	E 2 kt	—
Munising to Grand Marais	MI	N 11 kt	3.3 ft
Murrells Inlet to South Santee River	SC	S 6 kt	1.0 ft
NC VA border to Currituck Beach Light	NC	SW 4 kt	2.3 ft
Nantucket Sound	MA	SSE 12 kt	Small Craft Advisory
Narragansett Bay	RI	SSW 4 kt	3.0 ft
Nelson Lagoon to Cape Sarichef	AK	NNE 5 kt	Small Craft Advisory
Neuse and Bay Rivers	NC	S 4 kt	—
New Buffalo MI to St. Joseph	MI	W 2 kt	1.0 ft
New York Harbor	NY	SSE 16 kt	2.3 ft
Niagara River to Hamlin Beach	NY	SW 17 kt	1.6 ft
Nikolski to Seguam Bering Side	AK	NW 8 kt	Small Craft Advisory
Nikolski to Seguam Pacfic Side	AK	NW 8 kt	Small Craft Advisory
North Mobile Bay	AL	SSE 4 kt	1.0 ft
North Point Light to Wind Point	WI	W 8 kt	0.7 ft
North Side of Saint Lawrence Island	AK	N 27 kt	Gale Warning
North and West of Nunivak Island	AK	—	—
Northerly Island to Calumet Harbor	IL	W 9 kt	0.7 ft
Northern Chatham Strait	AK	SSW 2 kt	—
Northern Inland Waters	WA	S 6 kt	1.0 ft
Northern Lynn Canal	AK	W 2 kt	—
Northwest Prince William Sound	AK	N 10 kt	—
Norwood MI West of Mackinac Bridge	MI	NW 7 kt	0.7 ft
Oahu Leeward	HI	NE 3 kt	2.6 ft
Oahu Windward	HI	ENE 4 kt	5.6 ft
Oak Point to Saxon Harbor	WI	NNE 3 kt	Small Craft Advisory
Ochlockonee River to Apalachicola	FL	SSE 5 kt	—
Okaloosa-Walton County Line to Mexico Beach	FL	N 8 kt	—
Okaloosa-Walton County Line to Pensacola	FL	S 4 kt	—
Ontonagon to Upper Entrance of Portage Canal	MI	N 6 kt	2.6 ft
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay	MI	WSW 21 kt	Small Craft Advisory
Pailolo Channel	HI	ENE 15 kt	7.2 ft
Pamlico Sound	NC	WNW 3 kt	—
Pamlico and Pungo Rivers	NC	S 4 kt	—
Parramore Island to Cape Charles Light	VA	S 11 kt	1.6 ft
Pascagoula Mississippi to Stake Island	LA	W 3 kt	1.0 ft
Pascagoula Mississippi to Stake Island Louisiana out 20	LA	ESE 4 kt	1.0 ft
Passage Canal	AK	W 4 kt	—
Patapsco River including Baltimore Harbor	MD	SW 5 kt	Marine Weather Statement
Patuxent River to Broomes Island	MD	SSW 6 kt	0.7 ft
Peconic and Gardiners Bays	NY	SSE 8 kt	—
Penobscot Bay	ME	E 18 kt	Small Craft Advisory
Pensacola Bay Area	FL	S 4 kt	1.0 ft
Pensacola FL to Pascagoula	AL	ENE 4 kt	1.0 ft
Pentwater to Manistee	MI	WNW 14 kt	2.6 ft
Perdido Bay Area	AL	S 4 kt	1.0 ft
Pigeon Point to Point Pinos	CA	NNW 12 kt	4.9 ft
Pigeon Point to Point Pinos 10-60	CA	NNW 12 kt	4.6 ft
Point Arena to Point Reyes	CA	WNW 10 kt	7.2 ft
Point Arena to Point Reyes 10-60	CA	W 5 kt	7.2 ft
Point Betsie to Sleeping Bear Point	MI	W 18 kt	2.3 ft
Point Franklin to Cape Halkett	AK	N 13 kt	—
Point Grenville To Cape Shoalwater	WA	SSW 3 kt	3.6 ft
Point Grenville To Cape Shoalwater 10	WA	SSE 8 kt	3.6 ft
Point Isabelle to Lower Entrance of Portage Canal	MI	N 6 kt	3.3 ft
Point Mugu to San Mateo Point CA	CA	SE 7 kt	4.6 ft
Point Piedras Blancas to Point Sal westward	CA	SW 10 kt	4.6 ft
Point Pinos to Point Piedras Blancas	CA	NW 10 kt	8.9 ft
Point Pinos to Point Piedras Blancas 10-60	CA	NW 10 kt	8.9 ft
Point Reyes to Pigeon Point	CA	NW 10 kt	5.9 ft
Point Reyes to Pigeon Point 10-60	CA	NW 10 kt	5.9 ft
Point Sal to Santa Cruz Island CA	CA	NW 16 kt	Small Craft Advisory
Point St. George to Cape Mendocino	CA	SSW 4 kt	5.6 ft
Port Aransas to Matagorda Ship Channel	TX	SSE 12 kt	4.3 ft
Port Austin to Harbor Beach	MI	W 7 kt	Small Craft Advisory
Port Clyde, ME to Cape Elizabeth	ME	E 19 kt	Small Craft Advisory
Port Fourchon LA to Lower Atchafalaya River	LA	SSE 2 kt	1.6 ft
Port Heiden to Nelson Lagoon	AK	SSE 5 kt	Gale Warning
Port Mansfield TX to the Rio Grande River	TX	SSE 17 kt	4.3 ft
Port Sanilac to Port Huron	MI	W 12 kt	Small Craft Advisory
Port Washington to North Point Light	WI	NW 8 kt	0.7 ft
Port Wing to Sand Island	WI	NE 3 kt	—
Port of Valdez	AK	WSW 1 kt	—
Portage Lake to Huron Island MI to Lower Entrance of Portage Canal To Huron Islands MI	MI	N 6 kt	3.3 ft
Presque Isle Light to Sturgeon Pt MI	MI	NW 5 kt	2.3 ft
Pribilof Islands Nearshore	AK	WSW 7 kt	Small Craft Advisory
Provincetown MA to Chatham MA to Nantucket	MA	SSE 12 kt	Small Craft Advisory
Puget Sound and Hood Canal	WA	0 kt	1.0 ft
Rappahannock River from Urbanna to Windmill Point	VA	S 1 kt	1.6 ft
Reno Beach to The Islands	OH	SSW 16 kt	1.0 ft
Resurrection Bay	AK	N 3 kt	1.0 ft
Rhode Island Sound	MA	SSE 7 kt	Small Craft Advisory
Ripley to Buffalo NY	NY	SW 13 kt	3.3 ft
Ripley to Dunkirk	NY	SW 13 kt	Small Craft Advisory
Rock Island Passage to Sturgeon Bay	WI	W 10 kt	2.3 ft
S of Cape Hatteras NC to Ocracoke Inlet	NC	WNW 3 kt	3.0 ft
S of Cape Lookout NC to Surf City	NC	S 4 kt	2.0 ft
S of Currituck Beach Light NC to Oregon Inlet	NC	SSW 6 kt	2.6 ft
S of Ocracoke Inlet NC to Cape Lookout	NC	SW 5 kt	2.0 ft
S of Oregon Inlet NC to Cape Hatteras	NC	SSW 6 kt	3.0 ft
Sabine Lake	LA	SE 8 kt	—
Saint Matthew Island	AK	—	Small Craft Advisory
San Antonio, Mesquite	TX	SSE 12 kt	—
San Francisco Bay South of the Bay Bridge	CA	SW 4 kt	—
San Mateo Point to the Mexican Border	CA	NNW 6 kt	4.9 ft
San Pablo Bay, Suisun Bay	CA	NNE 17 kt	—
Sand Island to Bayfield	WI	WSW 7 kt	2.6 ft
Sandy Hook NJ to Fire Island Inlet	NY	S 12 kt	Small Craft Advisory
Sandy Hook NJ to Fire Island Inlet NY out 20	NY	S 14 kt	2.3 ft
Sandy Hook to Manasquan Inlet	NJ	S 12 kt	2.3 ft
Santa Cruz Island to San Clemente Island offshore	CA	NNW 14 kt	8.2 ft
Saxon Harbor WI to Black River	MI	NNE 3 kt	2.6 ft
Schoodic Point, ME to Stonington	ME	E 18 kt	Small Craft Advisory
Sebastian Inlet to Jupiter Inlet	FL	NE 8 kt	2.3 ft
Sebastian Inlet to Jupiter Inlet 20-60	FL	NE 8 kt	2.3 ft
Seguam to Adak Bering Side	AK	NW 1 kt	Small Craft Advisory
Seguam to Adak Pacific Side	AK	NW 1 kt	Small Craft Advisory
Seul Choix Point West of Mackinac Bridge	MI	NNW 6 kt	0.7 ft
Seul Choix Point to Point Detour	MI	NW 7 kt	2.3 ft
Sheboygan to Port Washington	WI	W 11 kt	0.7 ft
Shelikof Strait	AK	SSE 4 kt	Gale Warning
Silver Bay Harbor to Two Harbors	MN	SSW 12 kt	—
Sitkinak to Castle Cape	AK	0 kt	Gale Warning
Sledge Island to Wales	AK	NNE 24 kt	—
Sleeping Bear Point to Grand Traverse Light	MI	W 18 kt	2.3 ft
Sodus Bay to Mexico Bay	NY	SSE 6 kt	0.3 ft
South Haven to Holland	MI	SSW 8 kt	1.6 ft
South Mobile Bay	AL	SSE 2 kt	1.0 ft
South Santee River to Edisto Beach	SC	SE 4 kt	1.3 ft
South Shore Bays from Jones Inlet through Shinnecock Bay	NY	SSE 6 kt	Small Craft Advisory
South Side of Saint Lawrence Island	AK	N 27 kt	Gale Warning
Southern Chatham Strait	AK	N 7 kt	Small Craft Advisory
Southern Lynn Canal	AK	SE 1 kt	—
Southwest Prince William Sound	AK	N 10 kt	—
St. Andrews Bay Waterways	FL	N 8 kt	—
St. Augustine to Flagler Beach	FL	NNE 11 kt	1.6 ft
St. Ignace to False Detour Channel	MI	NNE 7 kt	0.7 ft
St. Joseph to South Haven	MI	SSW 6 kt	1.6 ft
St. Lawrence River above Ogdensburg	NY	ESE 4 kt	—
St. Lawrence River from Ogdensburg to St. Regis	NY	ESE 4 kt	—
St. Marys River Point Iroquois to E. Potagannissing Bay	MI	NW 7 kt	—
Stephens Passage	AK	SSE 2 kt	—
Stonington, ME to Port Clyde	ME	E 18 kt	Small Craft Advisory
Straits of Florida from Craig Key to west end of Seven Mile Bridge	FL	ENE 13 kt	2.0 ft
Straits of Florida from Halfmoon Shoal west of Dry Tortugas	FL	ENE 12 kt	2.0 ft
Straits of Florida from Ocean Reef to Craig Key	FL	E 8 kt	1.6 ft
Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal	FL	NE 12 kt	2.0 ft
Straits of Mackinac	MI	NW 7 kt	0.7 ft
Sturgeon Bay to Two Rivers	WI	WNW 9 kt	2.6 ft
Sturgeon Pt to Alabaster	MI	W 15 kt	2.3 ft
Sumner Strait	AK	NE 10 kt	Small Craft Advisory
Surf City to Cape Fear	NC	SSE 6 kt	1.6 ft
Suwannee River to Keaton Beach	FL	W 7 kt	—
Taconite Harbor to Silver Bay Harbor	MN	SSW 12 kt	2.6 ft
Tampa Bay	FL	ENE 3 kt	—
Tangier Sound and the inland waters surrounding Bloodsworth Island	MD	S 10 kt	Marine Weather Statement
Tarpon Springs to Suwannee River	FL	WSW 7 kt	1.0 ft
Tarpon Springs to Suwannee River FL out 20	FL	WSW 7 kt	1.0 ft
Terrebonne Bay	LA	E 5 kt	1.6 ft
The Islands to Vermilion	OH	WSW 6 kt	1.0 ft
Tidal Potomac from Cobb Island MD to Smith Point	MD	SE 6 kt	0.7 ft
Tidal Potomac from Indian Head to Cobb Island	MD	SSW 8 kt	0.7 ft
Tidal Potomac from Key Bridge to Indian Head	MD	SSW 8 kt	0.7 ft
Two Harbors to Duluth	MN	SW 4 kt	—
Two Rivers to Sheboygan	WI	W 11 kt	2.6 ft
Unalaska Bay	AK	SE 3 kt	Small Craft Advisory
Unalga Pass to Nikolski Bering Side	AK	SSE 3 kt	Small Craft Advisory
Unalga Pass to Nikolski Pacific Side	AK	SSE 3 kt	Small Craft Advisory
Unimak Pass	AK	W 4 kt	Small Craft Advisory
Upper Entrance of Portage Canal to Eagle River	MI	N 6 kt	2.6 ft
Upper Niagara River and Buffalo Harbor	NY	SW 10 kt	Small Craft Advisory
Valdez Arm	AK	NNE 13 kt	—
Valdez Narrows	AK	NE 7 kt	—
Vermilion and West Cote Blanche Bays	LA	ESE 11 kt	—
Vermilion to Avon Point	OH	W 16 kt	1.3 ft
Vineyard Sound	MA	ESE 1 kt	Small Craft Advisory
Volusia-Brevard County Line to Sebastian Inlet	FL	NE 5 kt	1.6 ft
Volusia-Brevard County Line to Sebastian Inlet 20-60	FL	NNE 6 kt	1.6 ft
Wales to Cape Espenberg	AK	NNE 24 kt	Small Craft Advisory
West Entrance US Waters Strait Of Juan De Fuca	WA	E 10 kt	1.0 ft
West of Barren Islands	AK	NNE 5 kt	Gale Warning
Western Choctawhatchee Bay	FL	SW 8 kt	—
Whitefish Bay/Whitefish Point to Point Iroquois	MI	NW 6 kt	Small Craft Advisory
Whitehall to Pentwater	MI	W 6 kt	2.6 ft
Willowick to Geneva-on-the Lake	OH	S 8 kt	Small Craft Advisory
Wilmette Harbor to Northerly Island	IL	E 6 kt	0.7 ft
Wind Point WI to Winthrop Harbor	WI	W 10 kt	0.3 ft
Winthrop Harbor to Wilmette Harbor	IL	WSW 6 kt	0.3 ft
Yakutat Bay	AK	E 16 kt	Small Craft Advisory
York River	VA	SW 3 kt	0.3 ft
the Southwest Pass of the Mississippi River to Port Fourchon	LA	E 5 kt	1.6 ft

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US marine forecasts: common questions

What is a small craft advisory?

A small craft advisory is a notice the National Weather Service issues when sustained winds or seas reach a level hazardous to small boats, commonly 21 to 33 knots of wind, or steep seas, though the exact thresholds vary by region. It is an advisory rather than a prohibition, and it means conditions are dangerous for inexperienced operators and small vessels.

How often do these forecasts update?

The NWS reissues coastal waters forecasts roughly every six hours, and amends them sooner when conditions change. Each of these 537 zone pages stamps the issuance time of the text it is showing, and the buoy observations beside it are usually less than an hour old.

Are the wind and wave numbers measured or forecast?

Each marine page carries both, kept separate. The conditions at the top of each page are measured by a real buoy, named, with its distance and the time of the reading. The charts below are the NWS gridded forecast for the next three days.

Why do seas sometimes come from a different buoy?

About a third of coastal buoys are an anemometer on a piling with no wave sensor at all. Where the nearest buoy cannot measure seas, the wave height is taken from the nearest one that can, and that buoy is named separately so the two numbers are never read as one observation.