538 FZUS53 KDLH 182201 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 501 PM CDT Mon May 18 2026 For waters within five nautical miles of shore on Lake Superior. Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. LSZ140-190400- Grand Portage to Grand Marais MN- 501 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM CDT THIS EVENING THROUGH TUESDAY AFTERNOON... .TONIGHT...Northeast wind 15 to 20 knots. Gusts up to 20 knots increasing to 25 knots late in the evening, then increasing to 30 knots after midnight decreasing to 25 knots late in the night. Slight chance of rain showers in the evening. Slight chance of thunderstorms through the night. Rain showers after midnight. Waves 1 to 2 feet building to 2 to 4 feet in the late evening and overnight. .TUESDAY...Northwest wind 10 to 15 knots with gusts to around 25 knots easing to 5 to 10 knots with gusts to around 20 knots in the afternoon. Chance of rain showers in the morning. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late morning and afternoon. .TUESDAY NIGHT...Northwest wind 10 to 15 knots. Gusts up to 20 knots early in the evening. Mostly cloudy in the evening then becoming partly cloudy. Waves 1 to 2 feet. .WEDNESDAY...Northwest wind 5 to 10 knots becoming south 10 to 15 knots with gusts to around 20 knots in the afternoon. Sunny. Waves 1 to 2 feet. $$ LSZ141-190400- Grand Marais to Taconite Harbor MN- 501 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM CDT THIS EVENING THROUGH TUESDAY AFTERNOON... .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 25 knots in the late evening and early morning decreasing to 20 knots. Chance of rain showers in the evening. Slight chance of thunderstorms through the night. Rain showers after midnight. Waves 1 to 3 feet building to 2 to 4 feet after midnight. .TUESDAY...Northwest wind 5 to 10 knots. Gusts up to 20 knots in the afternoon. Chance of rain showers in the morning. Chance of sprinkles in the afternoon. Waves 1 to 3 feet subsiding to 1 to 2 feet in the late morning and afternoon. .TUESDAY NIGHT...Northwest wind 5 to 10 knots. Gusts up to 20 knots early in the evening. Mostly cloudy in the evening then becoming partly cloudy. Waves 1 to 2 feet. .WEDNESDAY...West wind 5 knots becoming south in the afternoon. Sunny. Waves 1 foot or less. $$ LSZ142-190400- Taconite Harbor to Silver Bay Harbor MN- 501 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM CDT THIS EVENING THROUGH TUESDAY AFTERNOON... .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots increasing to 25 knots after midnight. Chance of rain showers in the evening. Slight chance of thunderstorms through the night. Rain showers after midnight. Waves 1 to 2 feet building to 2 to 4 feet after midnight. .TUESDAY...West wind 5 to 10 knots. Gusts up to 20 knots in the afternoon. Chance of rain showers in the morning. Chance of sprinkles in the afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet in the afternoon. .TUESDAY NIGHT...Northwest wind 5 to 10 knots. Gusts up to 20 knots early in the evening. Mostly cloudy in the evening then becoming partly cloudy. Waves 1 to 2 feet. .WEDNESDAY...Northwest wind 5 knots becoming west late in the morning, then becoming south in the afternoon. Sunny. Waves 1 foot or less. $$ LSZ143-190400- Silver Bay Harbor to Two Harbors MN- 501 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM CDT THIS EVENING THROUGH TUESDAY AFTERNOON... .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots late in the evening increasing to 25 knots, then decreasing to 20 knots late in the night. Chance ofrain showers in the evening. Chance of thunderstorms through the night. Rain showers after midnight. Waves 1 to 2 feet building to 2 to 4 feet after midnight. .TUESDAY...West wind 5 to 10 knots. Gusts up to 20 knots in the afternoon. Chance of rain showers in the morning. Chance of sprinkles in the afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet in the afternoon. .TUESDAY NIGHT...Northwest wind 5 to 10 knots. Mostly cloudy in the evening then clearing. Waves 1 to 2 feet. .WEDNESDAY...Northwest wind 5 knots becoming southeast in the afternoon. Sunny. Waves 1 foot or less. $$ LSZ144-190400- Two Harbors to Duluth MN- 501 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM CDT THIS EVENING THROUGH TUESDAY MORNING... .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots increasing to 25 knots after midnight, then decreasing to 20 knots late in the night. Rain showers likely in the evening. Chance of thunderstorms through the night. Rain showers after midnight. Waves 1 to 2 feet building to 2 to 4 feet after midnight. .TUESDAY...West wind 10 to 15 knots. Gusts up to 20 knots in the late morning and afternoon. Chance of rain showers in the morning. Waves 2 to 4 feet subsiding to 1 to 3 feet in the afternoon. .TUESDAY NIGHT...Northwest wind 10 to 15 knots with gusts to around 20 knots easing to 5 knots after midnight. Mostly cloudy in the evening then clearing. Waves 1 to 2 feet. .WEDNESDAY...West wind 5 knots becoming southeast in the afternoon. Sunny. Waves 1 foot or less. $$ LSZ145-190400- Duluth MN to Port Wing WI- 501 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM CDT THIS EVENING THROUGH TUESDAY MORNING... .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots late in the evening increasing to 25 knots, then decreasing to 20 knots late in the night. Rain showers likely in the evening. Chance of thunderstorms through the night. Rain showers after midnight. Waves 1 to 3 feet building to 2 to 4 feet after midnight. .TUESDAY...West wind 10 to 15 knots. Gusts up to 20 knots in the late morning and afternoon. Chance of rain showers in the morning. Waves 2 to 4 feet subsiding to 1 to 3 feet in the afternoon. .TUESDAY NIGHT...Northwest wind 10 to 15 knots with gusts to around 20 knots becoming west 5 knots after midnight. Mostly cloudy in the evening then becoming partly cloudy. Waves 1 to 2 feet. .WEDNESDAY...West wind 5 knots becoming southeast in the afternoon. Sunny. Waves 1 foot or less. $$ LSZ146-190400- Port Wing to Sand Island WI- 501 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM CDT THIS EVENING THROUGH TUESDAY MORNING... .TONIGHT...Northeast wind 10 to 15 knots easing to 10 knots late in the night. Gusts up to 20 knots late in the evening increasing to 25 knots, then decreasing to 20 knots late in the night. Rain showers likely in the evening. Chance of thunderstorms through the night. Rain showers after midnight. Waves 1 to 2 feet building to 3 to 5 feet after midnight. .TUESDAY...Northwest wind 5 to 10 knots becoming west with gusts to around 20 knots in the late morning and afternoon. Chance of rain showers in the morning. Chance of sprinkles in the afternoon. Waves 2 to 4 feet. .TUESDAY NIGHT...West wind 5 to 10 knots. Mostly cloudy in the evening then clearing. Waves 1 to 2 feet. .WEDNESDAY...West wind 5 knots early in the morning becoming variable 10 knots or less, then becoming southeast 5 knots late in the afternoon. Sunny. Waves 1 foot or less. $$ LSZ147-190400- Sand Island to Bayfield WI- 501 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM CDT THIS EVENING THROUGH TUESDAY MORNING... .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 25 knots in the late evening and early morning decreasing to 20 knots. Rain showers likely in the evening. Chance of thunderstorms through the night. Rain showers after midnight. Waves 1 to 2 feet building to 3 to 5 feet after midnight. .TUESDAY...North wind 5 to 10 knots becoming west with gusts to around 20 knots in the late morning and afternoon. Chance of rain showers in the morning. Chance of sprinkles in the afternoon. Waves 2 to 4 feet. .TUESDAY NIGHT...Northwest wind 5 to 10 knots. Mostly cloudy in the evening then becoming partly cloudy. Waves 1 to 3 feet. .WEDNESDAY...Northwest wind 5 knots becoming southeast in the afternoon. Sunny. Waves 1 foot or less. $$ LSZ150-190400- Outer Apostle Islands Beyond 5 NM from Mainland- 501 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM CDT THIS EVENING THROUGH TUESDAY AFTERNOON... .TONIGHT...Northeast wind 15 to 20 knots. Gusts up to 20 knots increasing to 25 knots late in the evening, then increasing to 30 knots after midnight decreasing to 25 knots late in the night. Chance of rain showers in the evening. Chance of thunderstorms through the night. Rain showers after midnight. Waves 1 to 2 feet building to 4 to 6 feet. Waves occasionally to 8 feet. .TUESDAY...North wind 5 to 10 knots with gusts to around 20 knots becoming west 10 to 15 knots with gusts to around 20 knots in the late morning and afternoon. Chance of rain showers in the morning. Chance of sprinkles in the afternoon. Waves 4 to 6 feet subsiding to 2 to 4 feet late in the afternoon. Waves occasionally to 7 feet. .TUESDAY NIGHT...Northwest wind 5 to 10 knots. Mostly cloudy in the evening then becoming partly cloudy. Waves 1 to 3 feet subsiding to 1 to 2 feet in the late evening and overnight. .WEDNESDAY...Northwest wind 5 knots becoming southeast in the afternoon. Sunny. Waves 1 foot or less. $$ LSZ121-190400- Chequamegon Bay-Bayfield to Oak Point WI- 501 PM CDT Mon May 18 2026 .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots in the late evening and overnight. Rain showers likely in the evening. Chance of thunderstorms through the night. Rain showers after midnight. Waves 1 to 2 feet. .TUESDAY...Northwest wind 5 to 10 knots becoming west 10 to 15 knots with gusts to around 20 knots in the late morning and afternoon. Chance of rain showers in the morning. Chance of sprinkles in the afternoon. Waves 1 foot or less. .TUESDAY NIGHT...Northwest wind 5 to 10 knots. Gusts up to 20 knots early in the evening. Mostly cloudy in the evening then becoming partly cloudy. Waves 1 foot or less. .WEDNESDAY...Northwest wind 5 knots becoming east in the afternoon. Sunny. Waves 1 foot or less. $$ LSZ148-190400- Oak Point to Saxon Harbor WI- 501 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM CDT THIS EVENING THROUGH TUESDAY AFTERNOON... .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 25 knots in the late evening and early morning decreasing to 20 knots. Rain showers likely in the evening. Chance of thunderstorms through the night. Rain showers after midnight. Waves 1 to 3 feet building to 5 to 8 feet. Waves occasionally to 10 feet. .TUESDAY...Northwest wind 5 to 10 knots becoming west 10 to 15 knots with gusts to around 20 knots in the afternoon. Chance of rain showers in the morning. Chance of sprinkles in the afternoon. Waves 2 to 4 feet. .TUESDAY NIGHT...Northwest wind 5 to 10 knots. Gusts up to 20 knots early in the evening. Mostly cloudy in the evening then becoming partly cloudy. Waves 1 to 3 feet. .WEDNESDAY...Northwest wind 5 knots becoming north late in the morning, then becoming east in the afternoon. Sunny. Waves 1 foot or less. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH  853 FZUS53 KAPX 182205 NSHAPX Nearshore Marine Forecast National Weather Service Gaylord MI 605 PM EDT Mon May 18 2026 For waters within five nautical miles of shore on Lakes Huron... Michigan and Superior. Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. LSZ321-190615- Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI- 605 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY EVENING... .OVERNIGHT...North wind 5 to 10 knots early in the evening becoming variable 10 knots or less, then becoming southeast 10 to 15 knots after midnight. Isolated showers early in the evening. Isolated thunderstorms early in the evening, then numerous showers and scattered thunderstorms after midnight. Waves 2 feet or less. .TUESDAY...Southwest wind 15 to 25 knots. Numerous showers and isolated thunderstorms. Waves 4 to 6 feet. .TUESDAY NIGHT...Northwest wind 15 to 25 knots. Mostly cloudy. Waves 4 to 7 feet. .WEDNESDAY...Northwest wind 10 to 20 knots. Mostly sunny. Waves 4 to 6 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LSZ322-190615- St. Marys River Point Iroquois to E. Potagannissing Bay- 605 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY EVENING... .OVERNIGHT...Southeast wind 10 to 15 knots. Scattered showers early in the evening, then isolated showers and thunderstorms early in the evening. Scattered showers and thunderstorms after midnight. .TUESDAY...Southwest wind 15 to 20 knots. Numerous showers and isolated thunderstorms. .TUESDAY NIGHT...Northwest wind 15 to 25 knots. Mostly cloudy. .WEDNESDAY...Northwest wind 15 to 20 knots. Mostly sunny. Winds higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LMZ341-190615- Seul Choix Point to 5NM West of Mackinac Bridge- 605 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .OVERNIGHT...Southwest wind 10 to 15 knots becoming south 15 to 20 knots early in the evening. Isolated showers and thunderstorms early in the evening, then scattered showers and thunderstorms after midnight. Waves 2 to 3 feet building to 3 to 5 feet after midnight. .TUESDAY...Southwest wind 15 to 25 knots. Scattered showers and isolated thunderstorms. Waves 4 to 6 feet. .TUESDAY NIGHT...Northwest wind 10 to 20 knots. Mostly cloudy. Waves 2 to 4 feet. .WEDNESDAY...Northwest wind 10 to 15 knots. Mostly sunny. Waves 2 to 3 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LMZ342-190615- Norwood MI to 5NM West of Mackinac Bridge including Little Traverse Bay- 605 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .OVERNIGHT...South wind 15 to 20 knots. Isolated showers early in the evening. Isolated thunderstorms early in the evening. Scattered showers after midnight. Waves 2 feet or less building to 2 to 3 feet after midnight. .TUESDAY...Southwest wind 15 to 25 knots. Scattered showers and isolated thunderstorms. Waves 3 to 5 feet. .TUESDAY NIGHT...Northwest wind 10 to 20 knots. Mostly cloudy. Waves 2 to 4 feet. .WEDNESDAY...Northwest wind 10 to 15 knots. Mostly sunny. Waves 2 to 3 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LMZ323-190615- Grand Traverse Bay south of a line Grand Traverse Light to Norwood MI- 605 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .OVERNIGHT...South wind 15 to 20 knots. Isolated showers and thunderstorms early in the evening. Scattered showers and isolated thunderstorms after midnight. Waves 2 feet or less building to 2 to 3 feet after midnight. .TUESDAY...Southwest wind 10 to 20 knots. Scattered showers and isolated thunderstorms. Waves 2 to 4 feet. .TUESDAY NIGHT...North wind 10 to 20 knots. Mostly cloudy. Waves 2 to 3 feet. .WEDNESDAY...Northwest wind 10 to 15 knots. Mostly sunny. Waves 2 to 3 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LMZ344-345-190615- Sleeping Bear Point to Grand Traverse Light MI- Point Betsie to Sleeping Bear Point MI- 605 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .OVERNIGHT...South wind 15 to 20 knots. Isolated showers and thunderstorms early in the evening, then numerous showers and scattered thunderstorms after midnight. Waves 2 to 3 feet building to 3 to 5 feet after midnight. .TUESDAY...Southwest wind 15 to 20 knots. Scattered showers and isolated thunderstorms. Waves 3 to 5 feet. .TUESDAY NIGHT...North wind 10 to 15 knots. Mostly cloudy. Waves 2 to 3 feet. .WEDNESDAY...North wind 10 to 15 knots. Mostly sunny. Waves 2 to 3 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LMZ346-190615- Manistee to Point Betsie MI- 605 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .OVERNIGHT...South wind 15 to 20 knots. Scattered showers early in the evening. Scattered thunderstorms early in the evening. Numerous showers after midnight. Waves 2 to 4 feet building to 3 to 5 feet after midnight. .TUESDAY...Southwest wind 10 to 20 knots. Scattered showers and isolated thunderstorms. Waves 4 to 6 feet. .TUESDAY NIGHT...North wind 10 to 15 knots. Mostly cloudy. Waves 2 to 4 feet. .WEDNESDAY...North wind 10 to 15 knots. Sunny. Waves 2 to 3 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LHZ345-190615- Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island- 605 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY EVENING... .OVERNIGHT...South wind 15 to 20 knots becoming southeast 5 to 10 knots early in the evening, then becoming south 10 to 15 knots early in the morning. Scattered showers through the night. Isolated thunderstorms early in the evening. Waves 2 feet or less. .TUESDAY...Southwest wind 15 to 25 knots. Scattered showers and isolated thunderstorms. Waves 2 to 4 feet. .TUESDAY NIGHT...Northwest wind 10 to 20 knots. Mostly cloudy. Waves 2 to 4 feet. .WEDNESDAY...Northwest wind 10 to 20 knots. Mostly sunny. Waves 2 to 3 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LHZ346-190615- St Ignace to False Detour Channel- 605 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY EVENING... .OVERNIGHT...South wind 5 to 10 knots becoming southeast 10 to 15 knots early in the evening. Scattered showers and isolated thunderstorms early in the evening, then isolated showers and thunderstorms early in the evening. Scattered showers and thunderstorms after midnight. Waves 2 feet or less. .TUESDAY...Southwest wind 15 to 25 knots. Scattered showers and isolated thunderstorms. Waves 3 to 5 feet. .TUESDAY NIGHT...Northwest wind 15 to 25 knots. Mostly cloudy. Waves 3 to 5 feet. .WEDNESDAY...Northwest wind 15 to 25 knots. Sunny. Waves 3 to 5 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LHZ347-190615- 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island- 605 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY EVENING... .OVERNIGHT...Southeast wind 10 to 15 knots. Isolated thunderstorms early in the evening. Scattered showers through the night. Isolated thunderstorms early in the evening. Waves 2 feet or less. .TUESDAY...Southwest wind 10 to 20 knots. Scattered showers and isolated thunderstorms. Waves 3 to 5 feet. .TUESDAY NIGHT...Northwest wind 15 to 25 knots. Mostly cloudy. Waves 5 to 8 feet. .WEDNESDAY...Northwest wind 15 to 25 knots. Sunny. Waves 5 to 8 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LHZ348-190615- Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary- 605 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY EVENING... .OVERNIGHT...Southeast wind 10 to 15 knots becoming south after midnight. Numerous showers and scattered thunderstorms early in the evening, then scattered showers and isolated thunderstorms early in the evening. Waves 2 to 4 feet. .TUESDAY...Southwest wind 10 to 20 knots. Scattered showers and isolated thunderstorms. Waves 3 to 5 feet. .TUESDAY NIGHT...Northwest wind 15 to 25 knots. Mostly cloudy. Waves 5 to 8 feet. .WEDNESDAY...Northwest wind 15 to 25 knots. Sunny. Waves 5 to 8 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LHZ349-190615- Sturgeon Pt to Alabaster MI- 605 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY EVENING... .OVERNIGHT...South wind 10 to 20 knots. Rain showers and scattered thunderstorms early in the evening, then scattered showers and isolated thunderstorms early in the evening. Waves 2 to 4 feet. .TUESDAY...Southwest wind 15 to 25 knots. Scattered showers and isolated thunderstorms. Waves 3 to 5 feet. .TUESDAY NIGHT...Northwest wind 10 to 20 knots. Mostly cloudy. Waves 2 to 4 feet. .WEDNESDAY...North wind 10 to 20 knots. Sunny. Waves 2 to 3 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ MSB  402 FZUS53 KMKX 182210 NSHMKX Nearshore Marine Forecast National Weather Service Milwaukee/Sullivan WI 510 PM CDT Mon May 18 2026 For waters within five nautical miles of shore on Lake Michigan LMZ643-190400- Sheboygan to Port Washington WI- 510 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .TONIGHT...South wind 10 to 15 knots rising to 15 to 20 knots late in the evening, then becoming south 15 to 20 knots after midnight. Chance of showers and thunderstorms in the late evening and overnight. patchy fog after midnight. Waves 3 to 4 feet building to 4 to 6 feet early in the morning. .TUESDAY...South wind 15 to 20 knots veering west late in the afternoon. Gusts up to 25 knots. Patchy fog in the morning. slight chance of thunderstorms in the morning. Chance of showers through the day. Waves 4 to 6 feet subsiding to 3 to 4 feet in the late morning and afternoon. .TUESDAY NIGHT...Northwest wind 15 to 20 knots easing to 10 to 15 knots with gusts to around 20 knots late in the evening, then becoming northwest 10 to 15 knots with gusts to around 20 knots after midnight veering north early in the morning. Partly cloudy. Waves 2 to 4 feet subsiding to 1 to 2 feet in the late evening and overnight. .WEDNESDAY...North wind 10 to 15 knots veering northeast late in the afternoon. Mostly sunny. Waves 1 to 2 feet building to 2 to 4 feet late in the afternoon. $$ LMZ644-190400- Port Washington to North Point Light WI- 510 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT TUESDAY THROUGH TUESDAY AFTERNOON... .TONIGHT...South wind 10 to 15 knots rising to 15 to 20 knots late in the evening, then becoming south 15 to 20 knots after midnight. Chance of showers and thunderstorms in the late evening and overnight. Waves 1 to 3 feet building to 3 to 4 feet in the late evening and overnight. .TUESDAY...South wind 15 to 20 knots veering west late in the afternoon. Gusts up to 25 knots. Slight chance of thunderstorms in the morning. Chance of showers through the day. Waves 3 to 4 feet subsiding to 1 to 2 feet late in the afternoon. .TUESDAY NIGHT...Northwest wind 15 to 20 knots easing to 10 to 15 knots late in the evening, then becoming northwest 10 to 15 knots with gusts to around 20 knots after midnight veering north early in the morning. Partly cloudy. Waves 1 to 2 feet. .WEDNESDAY...North wind 10 to 15 knots veering northeast late in the afternoon. Mostly sunny. Waves 1 to 2 feet building to 2 to 4 feet in the afternoon. $$ LMZ645-190400- North Point Light to Wind Point WI- 510 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT TUESDAY THROUGH TUESDAY AFTERNOON... .TONIGHT...South wind 10 to 15 knots rising to 15 to 20 knots. Slight chance of showers and thunderstorms in the evening, then chance of showers and thunderstorms in the late evening and overnight. Waves 1 to 2 feet building to 2 to 4 feet in the late evening and overnight. .TUESDAY...Southwest wind 15 to 20 knots veering west late in the afternoon. Gusts up to 25 knots. Slight chance of showers in the morning. Slight chance of thunderstorms through the day. Chance of showers in the afternoon. Waves 2 to 4 feet subsiding to 1 to 2 feet late in the afternoon. .TUESDAY NIGHT...Northwest wind 10 to 15 knots with gusts to around 20 knots veering north early in the morning. Partly cloudy. Waves 1 to 2 feet. .WEDNESDAY...North wind 10 to 15 knots veering northeast late in the afternoon. Mostly sunny. Waves 2 to 4 feet. $$ LMZ646-190400- Wind Point WI to Winthrop Harbor IL- 510 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT TUESDAY THROUGH TUESDAY AFTERNOON... .TONIGHT...South wind 10 to 15 knots rising to 15 to 20 knots after midnight, then becoming south 15 to 20 knots early in the morning. Slight chance of showers and thunderstorms in the evening, then chance of showers and thunderstorms in the late evening and overnight. Waves 1 to 3 feet building to 2 to 4 feet in the late evening and overnight. .TUESDAY...South wind 15 to 20 knots veering southwest late in the morning, then becoming southwest 15 to 20 knots early in the afternoon becoming west 10 to 15 knots late in the afternoon. Gusts up to 25 knots. Slight chance of showers in the morning. Slight chance of thunderstorms through the day. Chance of showers in the afternoon. Waves 2 to 4 feet subsiding to 1 to 2 feet late in the afternoon. .TUESDAY NIGHT...Northwest wind 10 to 15 knots with gusts to around 20 knots veering north early in the morning. Partly cloudy. Waves 1 to 2 feet. .WEDNESDAY...North wind 10 to 15 knots veering northeast late in the afternoon. Mostly sunny. Waves 2 to 4 feet. $$ See Lake Michigan Open Waters Forecast for Thursday through Saturday.  053 FZUS53 KDTX 182223 AAA NSHDTX Nearshore Marine Forecast for Michigan...UPDATED National Weather Service Detroit/Pontiac MI 623 PM EDT Mon May 18 2026 For waters within five nautical miles of shore Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. LHZ422-190630- Inner Saginaw Bay SW of Point Au Gres to Bay Port MI- 623 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING... .TONIGHT...Southwest winds 15 to 20 knots. Mostly cloudy. A slight chance of showers and thunderstorms in the evening. Waves 2 to 4 feet. .TUESDAY...Southwest winds 20 to 25 knots with gusts to 30 knots. Mostly cloudy becoming partly cloudy in the late morning and early afternoon becoming mostly sunny. A chance of showers early in the morning. A slight chance of showers and thunderstorms in the late morning and early afternoon, then showers likely and a chance of thunderstorms early in the afternoon. Waves 3 to 5 feet. Waves occasionally around 7 feet. .TUESDAY NIGHT...West winds 20 to 25 knots with gusts to 30 knots becoming northwest 15 to 20 knots in the late evening and overnight. Partly cloudy early in the evening becoming mostly cloudy. Light showers likely and a chance of thunderstorms early in the evening. Waves 2 to 4 feet subsiding to 1 to 3 feet after midnight. .WEDNESDAY...Northwest winds 15 to 20 knots diminishing to 10 to 15 knots in the late morning and early afternoon, then becoming north 15 to 20 knots early in the afternoon. Partly cloudy early in the morning then clearing. Waves 1 to 3 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ421-190630- Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay- 623 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING... .TONIGHT...Southwest winds 15 to 20 knots. Mostly cloudy. A slight chance of showers and thunderstorms in the evening. Waves 2 to 4 feet. .TUESDAY...Southwest winds 20 to 25 knots with gusts to 30 knots. Mostly cloudy early in the morning becoming partly cloudy. A slight chance of showers until late afternoon, then showers likely and a slight chance of thunderstorms early in the afternoon. Waves 4 to 6 feet. Waves occasionally around 8 feet. .TUESDAY NIGHT...Southwest winds 20 to 25 knots becoming northwest 15 to 20 knots in the late evening and overnight. Partly cloudy becoming mostly cloudy in the late evening and early morning becoming partly cloudy. A chance of showers and thunderstorms early in the evening. Waves 3 to 5 feet. Waves occasionally around 7 feet. .WEDNESDAY...Northwest winds 15 to 20 knots becoming north 10 to 15 knots in the late morning and early afternoon, then becoming northeast 15 to 20 knots early in the afternoon. Partly cloudy early in the morning then clearing. Waves 2 to 4 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ441-190630- Port Austin to Harbor Beach MI- 623 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING... .TONIGHT...Southwest winds 10 to 15 knots increasing to 15 to 20 knots early in the morning. Mostly cloudy with a chance of thunderstorms and a slight chance of showers in the evening, then partly cloudy after midnight. Waves 1 to 3 feet. .TUESDAY...South winds 15 to 20 knots becoming southwest 20 to 25 knots with gusts to 30 knots in the late morning and afternoon. Partly cloudy until late afternoon becoming mostly sunny. A slight chance of showers until late afternoon, then showers likely and a chance of thunderstorms early in the afternoon. Waves 3 to 5 feet. Waves occasionally around 7 feet. .TUESDAY NIGHT...West winds 15 to 20 knots veering to the north inthe late evening and early morning, then becoming northwest 10 to 15 knots after midnight. Partly cloudy becoming cloudy in the late evening and early morning becoming partly cloudy. A chance of showers and thunderstorms early in the evening, then a chance of showers in the late evening and early morning. Waves 2 to 4 feet. .WEDNESDAY...North winds 10 to 15 knots. Partly cloudy early in the morning then clearing. Waves 3 to 5 feet. Waves occasionally around 7 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ442-190630- Harbor Beach to Port Sanilac MI- 623 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING... .TONIGHT...Southwest winds 15 to 20 knots becoming south 10 to 15 knots in the late evening and overnight. Rain showers and a chance of thunderstorms in the evening, then partly cloudy after midnight. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and overnight. .TUESDAY...Southwest winds 15 to 20 knots. Gusts to 30 knots in the late morning and afternoon. Mostly cloudy early in the morning becoming partly cloudy. A slight chance of showers until late afternoon, then showers likely and a chance of thunderstorms early in the afternoon. Waves 2 to 4 feet. .TUESDAY NIGHT...Southwest winds 15 to 20 knots veering to the northwest in the late evening and early morning, then becoming north 10 to 15 knots after midnight. Partly cloudy becoming mostly cloudy in the late evening and early morning becoming partly cloudy. A chance of showers and thunderstorms early in the evening, then a chance of showers in the late evening and early morning. Waves 1 to 3 feet building to 2 to 4 feet after midnight. .WEDNESDAY...Northwest winds 10 to 15 knots becoming north 15 to 20 knots in the late morning and afternoon. Partly cloudy early in the morning becoming mostly sunny. Waves 2 to 4 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ443-190630- Port Sanilac to Port Huron MI- 623 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING... .TONIGHT...Southwest winds 15 to 20 knots becoming south 10 to 15 knots after midnight. Mostly cloudy with showers likely and a chance of thunderstorms in the evening, then partly cloudy after midnight. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and overnight. .TUESDAY...South winds 15 to 20 knots becoming southwest 20 to 25 knots early in the afternoon. Partly cloudy. A slight chance of showers until late afternoon, then a chance of showers and thunderstorms early in the afternoon. Waves 2 to 4 feet. .TUESDAY NIGHT...Southwest winds 15 to 20 knots veering to the north after midnight. Partly cloudy early in the evening becoming mostly cloudy. A chance of showers and thunderstorms until early morning. Waves 1 to 3 feet building to 2 to 4 feet after midnight. .WEDNESDAY...North winds 15 to 20 knots. Partly cloudy until late afternoon becoming mostly sunny. Waves 2 to 4 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LEZ444-190630- Michigan Waters of Lake Erie from Detroit River to North Cape MI- 623 PM EDT Mon May 18 2026 .TONIGHT...Southwest winds 15 to 20 knots diminishing to 10 to 15 knots in the late evening and overnight. Mostly cloudy with a chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Waves 1 to 3 feet. .TUESDAY...Southwest winds 15 to 20 knots. Partly cloudy. A slight chance of thunderstorms in the morning. A chance of showers. A chance of thunderstorms in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet in the late morning and afternoon. .TUESDAY NIGHT...Southwest winds 15 to 20 knots becoming west 10 to 15 knots in the late evening and early morning, then veering to the northwest after midnight. Rain showers early in the evening. A chance of thunderstorms until early morning. A chance of showers in the late evening and overnight. Waves 2 to 4 feet subsiding to 2 feet or less in the late evening and overnight. .WEDNESDAY...North winds 10 to 15 knots diminishing to 5 to 10 knots in the late morning and afternoon. Partly cloudy. A chance of showers early in the morning. Waves 2 feet or less. See Lake Erie Open Lake Forecast for days 3 through 5. The water temperature at Belle Isle is missing. $$ KDK You can obtain your latest National Weather Service forecasts online a www.weather.gov/greatlakes