572 WHUS73 KMQT 181414 MWWMQT URGENT - MARINE WEATHER MESSAGE National Weather Service Marquette MI 1014 AM EDT Mon May 18 2026 LSZ244-182100- /O.CON.KMQT.MF.Y.0011.000000T0000Z-260518T2100Z/ /O.CON.KMQT.SC.Y.0085.000000T0000Z-260518T1800Z/ Eagle River to Manitou Island MI- 1014 AM EDT Mon May 18 2026 ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 5 PM EDT THIS AFTERNOON... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON... * WHAT...For the Dense Fog Advisory, dense fog will reduce visibility to less than one nautical mile. For the Small Craft Advisory, southwest winds 5 to 10 kt and waves 2 to 5 ft occurring. * WHERE...Eagle River to Manitou Island MI. * WHEN...For the Dense Fog Advisory, until 5 PM EDT this afternoon. For the Small Craft Advisory, until 2 PM EDT this afternoon. * 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. && $$ LMZ248-250-190215- /O.CON.KMQT.MF.Y.0011.000000T0000Z-260518T1500Z/ /O.CON.KMQT.SC.Y.0085.000000T0000Z-260520T0000Z/ Seul Choix Point to Point Detour MI- 5NM East of a line from Fairport MI to Rock Island Passage- 1014 AM EDT Mon May 18 2026 ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 11 AM EDT THIS MORNING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT TUESDAY... * WHAT...For the Dense Fog Advisory, dense fog will reduce visibility to less than one nautical mile. For the Small Craft Advisory, southwest winds 15 to 25 kt with gusts up to 30 kt and waves 5 to 8 ft occurring. * WHERE...Seul Choix Point to Point Detour MI and 5NM East of a line from Fairport MI to Rock Island Passage. * WHEN...For the Dense Fog Advisory, until 11 AM EDT this morning. For the Small Craft Advisory, until 8 PM EDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. Low visibility will make navigation difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass. && $$ LMZ221-181515- /O.CON.KMQT.MF.Y.0011.000000T0000Z-260518T1500Z/ Green Bay North of line from Cedar River MI to Rock Island Passage- 1014 AM EDT Mon May 18 2026 ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 11 AM EDT THIS MORNING... * WHAT...Dense fog will reduce visibility to less than one nautical mile. * WHERE...Green Bay North of line from Cedar River MI to Rock Island Passage. * WHEN...Until 11 AM EDT this morning. * 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. && $$ LSZ264>266-182100- /O.CON.KMQT.MF.Y.0011.000000T0000Z-260518T2100Z/ Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM from shore- 1014 AM EDT Mon May 18 2026 ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 5 PM EDT THIS AFTERNOON... * WHAT...Dense fog will reduce visibility to less than one nautical mile. * WHERE...Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border, Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore and Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM from shore. * WHEN...Until 5 PM EDT this afternoon. * IMPACTS...Low visibility will make navigation difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass. && $$ LSZ267-190000- /O.CON.KMQT.MF.Y.0011.000000T0000Z-260519T0000Z/ Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 1014 AM EDT Mon May 18 2026 ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * 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 8 PM EDT this evening. * 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. && $$ LSZ245-181800- /O.CON.KMQT.SC.Y.0085.000000T0000Z-260518T1800Z/ Manitou Island to Point Isabelle MI- 1014 AM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON... * WHAT...Southwest winds 5 to 10 kt with gusts up to 15 kt and waves 3 to 5 ft occurring. * WHERE...Manitou Island to Point Isabelle MI. * WHEN...Until 2 PM EDT this afternoon. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LSZ246-247-181515- /O.CON.KMQT.SC.Y.0085.000000T0000Z-260518T1500Z/ Point Isabelle to Lower Entrance of Portage Canal MI- Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays- 1014 AM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM EDT THIS MORNING... * WHAT...Southwest winds 5 kt or less with gusts up to 10 kt and waves 1 to 4 ft occurring. * 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...Until 11 AM EDT this morning. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$  828 WHCA72 TJSJ 181421 MWWSJU URGENT - MARINE WEATHER MESSAGE National Weather Service San Juan PR 1021 AM AST Mon May 18 2026 AMZ711-182230- /O.CON.TJSJ.SC.Y.0018.000000T0000Z-260519T2200Z/ Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N- 1021 AM AST Mon May 18 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM AST TUESDAY... * WHAT...East winds 15 to 20 kt with gusts up to 30 kt and seas 5 to 7 ft. * WHERE...Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N. * WHEN...Until 6 PM AST Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$  825 WHUS73 KMKX 181421 MWWMKX URGENT - MARINE WEATHER MESSAGE National Weather Service Milwaukee/Sullivan WI 921 AM CDT Mon May 18 2026 LMZ643-182230- /O.CON.KMKX.SC.Y.0054.000000T0000Z-260520T0000Z/ Sheboygan to Port Washington WI- 921 AM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT TUESDAY... * WHAT...South winds 10 to 20 kt with gusts up to 25 kt and waves 4 to 6 ft. * WHERE...Nearshore Waters from Sheboygan to Port Washington. * WHEN...Until 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. && $$ LMZ644>646-182230- /O.CON.KMKX.SC.Y.0054.260519T0900Z-260519T2100Z/ Port Washington to North Point Light WI- North Point Light to Wind Point WI- Wind Point WI to Winthrop Harbor IL- 921 AM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 AM TO 4 PM CDT TUESDAY... * WHAT...Southwest winds 15 to 20 kt with gusts up to 25 kt expected. Waves 3 to 5 feet. * WHERE...Nearshore Waters from Port Washington to Winthrop Harbor IL. * WHEN...From 4 AM to 4 PM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$  875 WHUS73 KAPX 181446 MWWAPX URGENT - MARINE WEATHER MESSAGE National Weather Service Gaylord MI 1046 AM EDT Mon May 18 2026 LSZ321-322-181600- /O.CAN.KAPX.SC.Y.0040.000000T0000Z-260518T1600Z/ Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI- St. Marys River Point Iroquois to E. Potagannissing Bay- 1046 AM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IS CANCELLED... $$ LMZ323-341-342-344>346-190000- /O.CON.KAPX.SC.Y.0040.000000T0000Z-260519T0000Z/ Grand Traverse Bay south of a line Grand Traverse Light to Norwood MI-Seul Choix Point to 5NM West of Mackinac Bridge- Norwood MI to 5NM West of Mackinac Bridge including Little Traverse Bay-Sleeping Bear Point to Grand Traverse Light MI- Point Betsie to Sleeping Bear Point MI- Manistee to Point Betsie MI- 1046 AM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Highest gusts up to 25 kts from the southwest and highest waves around 5 feet. * WHERE...Portions of Lake Michigan. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$  889 WHUS73 KDLH 181447 MWWDLH URGENT - MARINE WEATHER MESSAGE National Weather Service Duluth MN 947 AM CDT Mon May 18 2026 LSZ140-143-144-181600- /O.EXP.KDLH.SC.Y.0062.000000T0000Z-260518T1500Z/ Grand Portage to Grand Marais MN- Silver Bay Harbor to Two Harbors MN-Two Harbors to Duluth MN- 947 AM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY WILL EXPIRE AT 10 AM CDT THIS MORNING... $$ LSZ141-142-181600- /O.EXP.KDLH.SC.Y.0063.000000T0000Z-260518T1500Z/ Grand Marais to Taconite Harbor MN- Taconite Harbor to Silver Bay Harbor MN- 947 AM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY WILL EXPIRE AT 10 AM CDT THIS MORNING... $$ LSZ145>148-181600- /O.EXP.KDLH.SC.Y.0062.000000T0000Z-260518T1500Z/ Duluth MN to Port Wing WI-Port Wing to Sand Island WI- Sand Island to Bayfield WI-Oak Point to Saxon Harbor WI- 947 AM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY WILL EXPIRE AT 10 AM CDT THIS MORNING... $$ LSZ150-181600- /O.EXP.KDLH.SC.Y.0063.000000T0000Z-260518T1500Z/ Outer Apostle Islands Beyond 5 NM from Mainland- 947 AM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY WILL EXPIRE AT 10 AM CDT THIS MORNING... $$