402 WHUS71 KBOX 181916 MWWBOX URGENT - MARINE WEATHER MESSAGE National Weather Service Boston/Norton MA 316 PM EDT Mon May 18 2026 ANZ254>256-190830- /O.NEW.KBOX.SC.Y.0057.260519T1500Z-260521T0000Z/ Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM- Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island- 316 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM TUESDAY TO 8 PM EDT WEDNESDAY... * WHAT...Southwest winds 15 to 25 kt with gusts up to 30 kt and seas 4 to 6 feet expected. * WHERE...In Massachusetts coastal waters, Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM and Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket. In Rhode Island coastal waters, Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island. * WHEN...From 11 AM Tuesday to 8 PM EDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$  884 WHUS71 KOKX 181929 MWWOKX URGENT - MARINE WEATHER MESSAGE National Weather Service New York NY 329 PM EDT Mon May 18 2026 ANZ350-353-355-190830- /O.NEW.KOKX.SC.Y.0059.260519T1600Z-260520T1000Z/ Moriches Inlet NY to Montauk Point NY out 20 NM- Fire Island Inlet NY to Moriches Inlet NY out 20 NM- Sandy Hook NJ to Fire Island Inlet NY out 20 NM- 329 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM NOON TUESDAY TO 6 AM EDT WEDNESDAY... * WHAT...Southwest winds 10 to 20 kt with gusts up to 30 kt and seas 3 to 6 feet expected. * WHERE...Sandy Hook NJ to Montauk Point NY out 20 nm. * WHEN...From noon Tuesday to 6 AM EDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ For more details, see the Coastal Waters Forecast from National Weather Service New York NY, or visit https://www.weather.gov/okx/marine  213 WHUS73 KMQT 181935 MWWMQT URGENT - MARINE WEATHER MESSAGE National Weather Service Marquette MI 335 PM EDT Mon May 18 2026 LMZ248-250-190745- /O.CAN.KMQT.SC.Y.0085.000000T0000Z-260520T0000Z/ /O.NEW.KMQT.SC.Y.0086.260519T0600Z-260520T0000Z/ Seul Choix Point to Point Detour MI- 5NM East of a line from Fairport MI to Rock Island Passage- 335 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM TO 8 PM EDT TUESDAY... * WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt and waves 3 to 6 ft expected. * WHERE...Seul Choix Point to Point Detour MI and 5NM East of a line from Fairport MI to Rock Island Passage. * WHEN...From 2 AM to 8 PM EDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LSZ244-190745- /O.EXT.KMQT.MF.Y.0011.000000T0000Z-260519T1500Z/ /O.NEW.KMQT.SC.Y.0086.260519T0600Z-260520T0000Z/ Eagle River to Manitou Island MI- 335 PM EDT Mon May 18 2026 ...DENSE FOG ADVISORY NOW IN EFFECT UNTIL 11 AM EDT TUESDAY... ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM TO 8 PM EDT TUESDAY... * WHAT...For the Dense Fog Advisory, dense fog will reduce visibility to less than one nautical mile. For the Small Craft Advisory, northwest winds 10 to 20 kt with gusts up to 25 kt and waves 3 to 5 ft expected. * WHERE...Eagle River to Manitou Island MI. * WHEN...For the Dense Fog Advisory, until 11 AM EDT Tuesday. For the Small Craft Advisory, from 2 AM to 8 PM EDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. Low visibility will make navigation difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass. && $$ LSZ245-190745- /O.NEW.KMQT.MF.Y.0012.260519T0500Z-260519T1200Z/ /O.NEW.KMQT.SC.Y.0086.260519T1500Z-260520T0000Z/ Manitou Island to Point Isabelle MI- 335 PM EDT Mon May 18 2026 ...DENSE FOG ADVISORY IN EFFECT FROM 1 AM TO 8 AM EDT TUESDAY... ...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM TO 8 PM EDT TUESDAY... * WHAT...For the Dense Fog Advisory, dense fog will reduce visibility to less than one nautical mile. For the Small Craft Advisory, northwest winds 15 to 20 kt with gusts up to 25 kt and waves 1 to 4 ft expected. * WHERE...Manitou Island to Point Isabelle MI. * WHEN...For the Dense Fog Advisory, from 1 AM to 8 AM EDT Tuesday. For the Small Craft Advisory, from 11 AM to 8 PM EDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. Low visibility will make navigation difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass. && $$ LSZ248>251-190745- /O.EXB.KMQT.MF.Y.0011.260519T0000Z-260519T1200Z/ /O.NEW.KMQT.SC.Y.0086.260519T1400Z-260520T0000Z/ Huron Islands to Marquette MI-Marquette to Munising MI- Munising to Grand Marais MI-Grand Marais to Whitefish Point MI- 335 PM EDT Mon May 18 2026 ...DENSE FOG ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO 8 AM EDT TUESDAY... ...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM TO 8 PM EDT TUESDAY... * WHAT...For the Dense Fog Advisory, dense fog will reduce visibility to less than one nautical mile. For the Small Craft Advisory, west winds 15 to 20 kt with gusts up to 30 kt and waves 4 to 7 ft expected. * WHERE...Huron Islands to Marquette MI, Marquette to Munising MI, Munising to Grand Marais MI and Grand Marais to Whitefish Point MI. * WHEN...For the Dense Fog Advisory, from 8 PM this evening to 8 AM EDT Tuesday. For the Small Craft Advisory, from 10 AM to 8 PM EDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. Low visibility will make navigation difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass. && $$ LSZ246-247-190745- /O.NEW.KMQT.MF.Y.0012.260519T0500Z-260519T1200Z/ Point Isabelle to Lower Entrance of Portage Canal MI- Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays- 335 PM EDT Mon May 18 2026 ...DENSE FOG ADVISORY IN EFFECT FROM 1 AM TO 8 AM EDT TUESDAY... * WHAT...Dense fog will reduce visibility to less than one nautical mile. * WHERE...Point Isabelle to Lower Entrance of Portage Canal MI and Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays. * WHEN...From 1 AM to 8 AM EDT Tuesday. * IMPACTS...Low visibility will make navigation difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass. && $$ LSZ240>243-190745- /O.NEW.KMQT.SC.Y.0086.260519T0900Z-260519T1800Z/ Saxon Harbor WI to Black River MI-Black River to Ontonagon MI- Ontonagon to Upper Entrance of Portage Canal MI- Upper Entrance of Portage Canal to Eagle River MI- 335 PM EDT Mon May 18 2026 /235 PM CDT Mon May 18 2026/ ...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM EDT /4 AM CDT/ TO 2 PM EDT /1 PM CDT/ TUESDAY... * WHAT...Northwest winds 10 to 15 kt with gusts up to 20 kt and waves 3 to 5 ft expected. * WHERE...Saxon Harbor WI to Black River MI, Black River to Ontonagon MI, Ontonagon to Upper Entrance of Portage Canal MI and Upper Entrance of Portage Canal to Eagle River MI. * WHEN...From 5 AM EDT /4 AM CDT/ to 2 PM EDT /1 PM CDT/ Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LSZ264>266-190745- /O.EXT.KMQT.MF.Y.0011.000000T0000Z-260519T1500Z/ Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM from shore- 335 PM EDT Mon May 18 2026 ...DENSE FOG ADVISORY NOW IN EFFECT UNTIL 11 AM EDT TUESDAY... * WHAT...Dense fog will reduce visibility to less than one nautical mile. * WHERE...Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border, Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore and Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM from shore. * WHEN...Until 11 AM EDT Tuesday. * IMPACTS...Low visibility will make navigation difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use yourradar and compass. && $$ LSZ267-190745- /O.EXT.KMQT.MF.Y.0011.000000T0000Z-260519T1800Z/ Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 335 PM EDT Mon May 18 2026 ...DENSE FOG ADVISORY NOW IN EFFECT UNTIL 2 PM EDT TUESDAY... * WHAT...Dense fog will reduce visibility to less than one nautical mile. * WHERE...Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border. * WHEN...Until 2 PM EDT Tuesday. * IMPACTS...Low visibility will make navigation difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass. && $$  404 WHUS76 KMFR 181937 MWWMFR URGENT - MARINE WEATHER MESSAGE National Weather Service Medford OR 1237 PM PDT Mon May 18 2026 PZZ356-376-191200- /O.EXT.KMFR.SE.W.0017.000000T0000Z-260521T0600Z/ Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm- Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm- 1237 PM PDT Mon May 18 2026 ...HAZARDOUS SEAS WARNING NOW IN EFFECT UNTIL 11 PM PDT WEDNESDAY... * WHAT...North winds of 20 to 30 kt with gusts to 35 kt with very steep combined seas of 9 to 13 feet. * WHERE...All areas. Strongest winds and highest seas are expected from Gold Beach southward. * WHEN...Until 11 PM PDT Wednesday. * IMPACTS...Very steep and hazardous seas could capsize or damage vessels. Bar crossings will become especially treacherous. * View the hazard area in detail at https://go.usa.gov/x6hks PRECAUTIONARY/PREPAREDNESS ACTIONS... Recreational boaters should remain in port. Commercial vessels should prepare for very steep seas and consider remaining in port until conditions improve. && $$ PZZ350-370-191200- /O.EXT.KMFR.SC.Y.0040.000000T0000Z-260521T0600Z/ Coastal waters from Florence to Cape Blanco OR out 10 nm- Waters from Florence to Cape Blanco OR from 10 to 60 nm- 1237 PM PDT Mon May 18 2026 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 11 PM PDT WEDNESDAY... * WHAT...North winds 15 to 25 kt with gusts up to 30 kt and steep combined seas of 6 to 9 ft. * WHERE...All areas. * WHEN...Until 11 PM PDT Wednesday. * IMPACTS...Gusty winds and/or steep seas could capsize or damage smaller vessels. * View the hazard area in detail at https://go.usa.gov/x6hks PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners and those operating smaller vessels should remain in port and avoid the area of hazardous conditions. && $$ Visit us at https://www.weather.gov/Medford  085 WHUS73 KAPX 181949 MWWAPX URGENT - MARINE WEATHER MESSAGE National Weather Service Gaylord MI 349 PM EDT Mon May 18 2026 LHZ345>349-190400- /O.NEW.KAPX.SC.Y.0041.260519T1200Z-260520T0400Z/ Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island-St Ignace to False Detour Channel- 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island- Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary-Sturgeon Pt to Alabaster MI- 349 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM TUESDAY TO MIDNIGHT EDT TUESDAY NIGHT... * WHAT...Highest gusts up to 30 kts from the southwest and highest waves around 6 feet expected. * WHERE...Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island, St Ignace to False Detour Channel, 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island, Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary and Sturgeon Pt to Alabaster MI. * WHEN...From 8 AM Tuesday to midnight EDT Tuesday night. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LSZ321-322-190400- /O.NEW.KAPX.SC.Y.0041.260519T1200Z-260520T0400Z/ Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI- St. Marys River Point Iroquois to E. Potagannissing Bay- 349 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM TUESDAY TO MIDNIGHT EDT TUESDAY NIGHT... * WHAT...Highest gusts up to 30 kts from the west and highest waves around 7 feet expected. * WHERE...Whitefish Bay (U. S. Portion)/Whitefish Point to Point Iroquois MI and St. Marys River Point Iroquois to E. Potagannissing Bay. * WHEN...From 8 AM Tuesday to midnight EDT Tuesday night. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ323-341-342-344>346-190400- /O.EXT.KAPX.SC.Y.0040.000000T0000Z-260520T0400Z/ Grand Traverse Bay south of a line Grand Traverse Light to Norwood MI-Seul Choix Point to 5NM West of Mackinac Bridge- Norwood MI to 5NM West of Mackinac Bridge including Little Traverse Bay-Sleeping Bear Point to Grand Traverse Light MI- Point Betsie to Sleeping Bear Point MI- Manistee to Point Betsie MI- 349 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL MIDNIGHT EDT TUESDAY NIGHT... * WHAT...Highest gusts up to 30 kts from the southwest and highest waves around 6 feet. * WHERE...Portions of Lake Michigan. * WHEN...Until midnight EDT Tuesday night. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$  252 WHUS76 KLOX 181952 MWWLOX URGENT - MARINE WEATHER MESSAGE National Weather Service Los Angeles/Oxnard CA 1252 PM PDT Mon May 18 2026 PZZ670-190400- /O.CON.KLOX.SC.Y.0079.000000T0000Z-260519T1000Z/ Point Piedras Blancas to Point Sal from 10 to 60 NM- 1252 PM PDT Mon May 18 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT TUESDAY... * WHAT...Hazardous sea conditions. * WHERE...Point Piedras Blancas to Point Sal from 10 to 60 NM. * WHEN...Until 3 AM PDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. * ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX) for more. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ673-190400- /O.CON.KLOX.SC.Y.0079.000000T0000Z-260519T0400Z/ Waters from Pt. Sal to Santa Cruz Island CA and westward 60 nm including San Miguel and Santa Rosa Islands- 1252 PM PDT Mon May 18 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING... * WHAT...Hazardous sea conditions. * WHERE...Waters from Pt. Sal to Santa Cruz Island CA and westward 60 nm including San Miguel and Santa Rosa Islands. * WHEN...Until 9 PM PDT this evening. * IMPACTS...Conditions will be hazardous to small craft. * ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX) for more. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ676-190400- /O.CON.KLOX.SC.Y.0079.000000T0000Z-260519T0400Z/ Outer waters from Santa Cruz Island to San Clemente Island to 60 NM offshore including San Nicolas and Santa Barbara Islands- 1252 PM PDT Mon May 18 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING... * WHAT...Hazardous sea conditions. * WHERE...Outer waters from Santa Cruz Island to San Clemente Island to 60 NM offshore including San Nicolas and Santa Barbara Islands. * WHEN...Until 9 PM PDT this evening. * IMPACTS...Conditions will be hazardous to small craft. * ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX) for more. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$  571 WHUS73 KGRB 181958 MWWGRB URGENT - MARINE WEATHER MESSAGE National Weather Service Green Bay WI 258 PM CDT Mon May 18 2026 LMZ541>543-190400- /O.CAN.KGRB.SC.Y.0052.000000T0000Z-260520T0600Z/ /O.EXB.KGRB.SC.Y.0053.260519T0600Z-260520T0600Z/ Rock Island Passage to Sturgeon Bay WI- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 258 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 1 AM TUESDAY TO 1 AM CDT WEDNESDAY... * WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt, veering northwest Tuesday afternoon. Waves 3 to 6 ft expected. * WHERE...Lake Michigan nearshore waters from Washington Island to Sheboygan. * WHEN...From 1 AM Tuesday to 1 AM CDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft. * ADDITIONAL DETAILS...Patchy fog may be dense at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ521-522-190400- /O.CON.KGRB.SC.Y.0053.260519T1500Z-260520T0000Z/ Green Bay south of line from Cedar River to Rock Island Passage and north of a line from Oconto WI to Little Sturgeon Bay WI- Green Bay south of line from Oconto WI to Little Sturgeon Bay WI- 258 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 10 AM TO 7 PM CDT TUESDAY... * WHAT...West winds 10 to 15 kt with gusts up to 25 kt and waves 1 to 2 ft expected. * WHERE...Central and Southern Bay of Green Bay. * WHEN...From 10 AM to 7 PM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ JLA