Use caution
Winds or seas hazardous to small boats are forecast or occurring. Thresholds vary by marine area.
What to do
Collected NWS data
Coastal waters from Tarpon Springs to Suwannee River FL out 20 NM, Waters from Tarpon Springs to Suwannee River FL out 20 to 60 NM
Chesapeake Bay from Little Creek VA to Cape Henry VA including the Chesapeake Bay Bridge Tunnel, Chesapeake Bay from New Point Comfort to Little Creek VA, Chesapeake Bay from Smith Point to Windmill Point VA and 1 more
Grand Haven to Whitehall MI, Holland to Grand Haven MI, Pentwater to Manistee MI and 2 more
Coastal waters from Pt. St. George to Cape Mendocino CA out 10 nm, Waters from Pt. St. George to Cape Mendocino CA from 10 to 60 nm
Coastal Waters from Point Reyes to Pigeon Point California out to 10 nm, Waters from Pigeon Point to Point Pinos 10-60 NM, Waters from Point Pinos to Point Piedras Blancas 10-60 NM and 1 more
Coastal Waters from Pigeon Point to Point Pinos California out to 10 nm
Outer waters from Santa Cruz Island to San Clemente Island to 60 NM offshore including San Nicolas and Santa Barbara Islands, Point Piedras Blancas to Point Sal from 10 to 60 NM, Waters from Pt. Sal to Santa Cruz Island CA and westward 60 nm including San Miguel and Santa Rosa Islands
Central U.S. Waters Strait Of Juan De Fuca, East Entrance U.S. Waters Strait Of Juan De Fuca
Coastal waters from Cape Falcon to Cape Foulweather OR out 10 nm, Coastal waters from Cape Foulweather to Florence OR out 10 nm, Coastal waters from Cape Shoalwater WA to Cape Falcon OR out 10 nm and 4 more
Burns Harbor to Michigan City IN, Calumet Harbor IL to Gary IN, Gary to Burns Harbor IN and 3 more
Block Island Sound, Buzzards Bay, Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket and 5 more
Coastal Waters from Mexico Beach to Apalachicola out 20 NM, Coastal waters from Okaloosa-Walton County Line to Mexico Beach out 20 NM, Waters from Mexico Beach to Apalachicola FL from 20 to 60 NM and 1 more
Inner Saginaw Bay SW of Point Au Gres to Bay Port MI, Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay
Michigan City IN to New Buffalo MI, New Buffalo MI to St Joseph MI
North Point Light to Wind Point WI, Port Washington to North Point Light WI, Sheboygan to Port Washington WI and 1 more
Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm, Coastal waters from Florence to Cape Blanco OR out 10 nm, Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm and 1 more
Coastal waters from Cameron LA to High Island TX out 20 NM, Coastal waters from Intracoastal City to Cameron LA out 20 NM, Coastal waters from Lower Atchafalaya River to Intracoastal City LA out 20 NM and 3 more
Reviewed 2026-07-21. This guide is maintained by Weather Alert Watch from official sources.
Corrections and review policy