478 FZUS53 KDLH 240400 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 1100 PM CDT Sun Aug 23 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. LSZ140-241000- Grand Portage to Grand Marais MN- 1100 PM CDT Sun Aug 23 2026 .REST OF TONIGHT...Northwest wind 5 to 10 knots. Mostly clear. Waves 1 foot or less. .MONDAY...North wind 5 to 10 knots becoming southwest in the afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...Southwest wind 5 to 10 knots. Mostly cloudy. Waves 1 foot or less. .TUESDAY...Southeast wind 5 knots. Slight chance of rain showers in the morning, then rain showers likely and chance of thunderstorms in the afternoon. Waves 1 foot or less. $$ LSZ141-241000- Grand Marais to Taconite Harbor MN- 1100 PM CDT Sun Aug 23 2026 .REST OF TONIGHT...Northwest wind 5 knots. Partly cloudy. Waves 1 foot or less. .MONDAY...North wind 5 knots early in the morning becoming variable 10 knots or less, then becoming southwest 5 knots in the afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...Variable winds 10 knots or less. Mostly cloudy. Waves 1 foot or less. .TUESDAY...Northeast wind 5 knots becoming southeast in the late morning and afternoon. Chance of rain showers in the morning, then rain showers likely and chance of thunderstorms in the afternoon. Waves 1 foot or less. $$ LSZ142-241000- Taconite Harbor to Silver Bay Harbor MN- 1100 PM CDT Sun Aug 23 2026 .REST OF TONIGHT...Northwest wind 5 knots late in the evening becoming variable 10 knots or less. Partly cloudy. Waves 1 foot or less. .MONDAY...Variable winds 10 knots or less. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...Variable winds 10 knots or less. Slight chance of rain showers after midnight. Waves 1 foot or less. .TUESDAY...Variable winds 10 knots or less becoming southeast 5 knots in the late morning and afternoon. Chance of rain showers in the morning, then rain showers likely and chance of thunderstorms in the afternoon. Waves 1 foot or less. $$ LSZ143-241000- Silver Bay Harbor to Two Harbors MN- 1100 PM CDT Sun Aug 23 2026 .REST OF TONIGHT...North wind 5 knots late in the evening becoming variable 10 knots or less. Partly cloudy late in the evening then becoming mostly cloudy. Waves 1 foot or less. .MONDAY...Variable winds 10 knots or less becoming east 5 knots in the afternoon. Partly sunny. Waves 1 foot or less. .MONDAY NIGHT...Northeast wind 5 knots. Slight chance of rain showers after midnight. Waves 1 foot or less. .TUESDAY...Variable winds 10 knots or less becoming southeast 5 knots in the late morning and afternoon. Chance of rain showers and slight chance of thunderstorms in the morning, then rain showers likely and chance of thunderstorms in the afternoon. Waves 1 foot or less. $$ LSZ144-241000- Two Harbors to Duluth MN- 1100 PM CDT Sun Aug 23 2026 .REST OF TONIGHT...Northeast wind 5 knots late in the evening becoming variable 10 knots or less. Partly cloudy late in the evening then becoming mostly cloudy. Waves 1 foot or less. .MONDAY...Variable winds 10 knots or less becoming east 5 to 10 knots in the late morning and afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...Northeast wind 5 to 10 knots. Slight chance of rain showers after midnight. Waves 1 foot or less. .TUESDAY...East wind 5 knots becoming south in the late morning and afternoon. Chance of rain showers and slight chance of thunderstorms in the morning, then rain showers likely and chance of thunderstorms in the afternoon. Waves 1 foot or less. $$ LSZ145-241000- Duluth MN to Port Wing WI- 1100PM CDT Sun Aug 23 2026 .REST OF TONIGHT...East wind 5 knots becoming south after midnight, then becoming variable 10 knots or less toward daybreak. Partly cloudy. Waves 1 foot or less. .MONDAY...Variable winds 10 knots or less becoming northeast 5 to 10 knots in the late morning and afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...East wind 5 to 10 knots. Slight chance of rain showers after midnight. Waves 1 foot or less. .TUESDAY...South wind 5 knots becoming southwest in the afternoon. Chance of rain showers and slight chance of thunderstorms in the morning, then rain showers likely and chance of thunderstorms in the afternoon. Waves 1 foot or less. $$ LSZ146-241000- Port Wing to Sand Island WI- 1100 PM CDT Sun Aug 23 2026 .REST OF TONIGHT...Southeast wind 5 knots becoming northwest after midnight, then becoming variable 10 knots or less toward daybreak. Partly cloudy. Waves 1 foot or less. .MONDAY...Variable winds 10 knots or less becoming northeast 5 knots in the afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...East wind 5 knots in the evening becoming variable 10 knots or less. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 foot or less. .TUESDAY...South wind 5 knots becoming northeast late in the afternoon. Slight chance of showers and thunderstorms in the morning, then rain showers likely and chance of thunderstorms in the afternoon. Waves 1 foot or less. $$ LSZ147-241000- Sand Island to Bayfield WI- 1100 PM CDT Sun Aug 23 2026 .REST OF TONIGHT...South wind 5 knots late in the evening becoming variable 10 knots or less. Partly cloudy. Waves 1 foot or less. .MONDAY...Variable winds 10 knots or less becoming northeast 5 knots early in the afternoon, then becoming east late in the afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...Southeast wind 5 knots. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 foot or less. .TUESDAY...South wind 5 knots becoming east late in the afternoon. Slight chance of rain showers in the morning, then rain showers likely and chance of thunderstorms in the afternoon. Waves 1 foot or less. $$ LSZ150-241000- Outer Apostle Islands Beyond 5 NM from Mainland- 1100 PM CDT Sun Aug 23 2026 .REST OF TONIGHT...South wind 5 knots becoming northwest after midnight. Mostly clear. Waves 1 foot or less. .MONDAY...North wind 5 knots becoming southeast late in the afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...Southeast wind 5 knots. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 foot or less. .TUESDAY...South wind 5 knots becoming southeast late in the afternoon. Slight chance of rain showers in the morning, then rain showers likely and chance of thunderstorms in the afternoon. Waves 1 foot or less. $$ LSZ121-241000- Chequamegon Bay-Bayfield to Oak Point WI- 1100 PM CDT Sun Aug 23 2026 .REST OF TONIGHT...Variable winds 10 knots or less. Partly cloudy. Waves 1 foot or less. .MONDAY...Variable winds 10 knots or less becoming east 5 knots in the afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...East wind 5 knots in the evening becoming variable 10 knots or less, then becoming south 5 knots early in the morning. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 foot or less. .TUESDAY...South wind 5 to 10 knots. Slight chance of rain showers in the morning. Rain showers likely and chance of thunderstorms in the afternoon. Waves 1 foot or less. $$ LSZ148-241000- Oak Point to Saxon Harbor WI- 1100 PM CDT Sun Aug 23 2026 .REST OF TONIGHT...Variable winds 10 knots or less becoming southwest 5 knots after midnight. Mostly clear. Waves 1 foot or less. .MONDAY...West wind 5 knots early in the morning becoming variable 10 knots or less, then becoming east5 knots in the afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...East wind 5 knots becoming south after midnight. Partly cloudy. Waves 1 foot or less. .TUESDAY...South wind 5 to 10 knots. Slight chance of rain showers in the morning. Rain showers likely and chance of thunderstorms in the afternoon. Waves 1 foot or less. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH  193 FZUS53 KMKX 240410 NSHMKX Nearshore Marine Forecast National Weather Service Milwaukee/Sullivan WI 1110 PM CDT Sun Aug 23 2026 For waters within five nautical miles of shore on Lake Michigan LMZ643-241000- Sheboygan to Port Washington WI- 1110 PM CDT Sun Aug 23 2026 .REST OF TONIGHT...North wind 10 to 15 knots backing northwest early in the morning. Clear. Waves 1 to 2 feet. .MONDAY...Northwest wind 10 to 15 knots becoming north 5 to 10 knots early in the afternoon, then veering northeast late in the afternoon. Sunny. Waves around 1 foot. .MONDAY NIGHT...Southeast wind 5 to 10 knots veering west early in the morning. Mostly clear. Waves nearly calm. .TUESDAY...West wind 5 to 10 knots backing southwest late in the morning, then becoming south 10 to 15 knots early in the afternoon rising to 15 to 20 knots late in the afternoon. Mostly sunny. Waves around 1 foot building to 2 to 4 feet late in the afternoon. $$ LMZ644-241000- Port Washington to North Point Light WI- 1110 PM CDT Sun Aug 23 2026 .REST OF TONIGHT...North wind 5 to 10 knots backing northwest early in the morning. Clear. Waves 1 to 2 feet. .MONDAY...Northwest wind 5 to 10 knots rising to 10 to 15 knots late in the morning, then becoming north 5 to 10 knots in the afternoon. Sunny. Waves 1 to 2 feet. .MONDAY NIGHT...East wind 5 to 10 knots veering southwest late in the evening, then veering west after midnight becoming west 5 to 10 knots early in the morning. Mostly clear. Waves around 1 foot. .TUESDAY...West wind 5 to 10 knots backing southwest late in the morning, then becoming south 10 to 15 knots early in the afternoon becoming south 10 to 15 knots with gusts to around 20 knots late in the afternoon. Mostly sunny. Waves around 1 foot. $$ LMZ645-241000- North Point Light to Wind Point WI- 1110 PM CDT Sun Aug 23 2026 .REST OF TONIGHT...Northwest wind 5 to 10 knots. Clear. Waves 1 to 2 feet. .MONDAY...Northwest wind 5 to 10 knots rising to 10 to 15 knots late in the morning, then becoming north 5 to 10 knots early in the afternoon veering northeast late in the afternoon. Sunny. Waves 1 to 2 feet. .MONDAY NIGHT...East wind 5 to 10 knots veering southwest late in the evening, then becoming southwest 5 to 10 knots after midnight veering west early in the morning. Mostly clear. Waves around 1 foot. .TUESDAY...West wind 5 to 10 knots backing southwest late in the morning, then becoming south 10 to 15 knots with gusts to around 20 knots in the afternoon. Mostly sunny. Waves around 1 foot. $$ LMZ646-241000- Wind Point WI to Winthrop Harbor IL- 1110 PM CDT Sun Aug 23 2026 .REST OF TONIGHT...Northwest wind 5 to 10 knots. Clear. Waves 1 to 2 feet. .MONDAY...Northwest wind 5 to 10 knots veering northeast late in the afternoon. Sunny. Waves 1 to 2 feet. .MONDAY NIGHT...East wind 5 to 10 knots veering south late in the evening, then veering southwest after midnight veering west early in the morning. Mostly clear. Waves around 1 foot. .TUESDAY...West wind 5 to 10 knots backing southwest late in the morning, then becoming south 10 to 15 knots in the afternoon. Sunny. Waves around 1 foot. $$ See Lake Michigan Open Waters Forecast for Wednesday through Friday.  232 FZUS53 KGRB 240443 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 1143 PM CDT Sun Aug 23 2026 For waters within five nautical miles of shore on Lake Michigan LMZ521-522-241000- Green Bay south of line from Cedar River to Rock Island Passage and north of a line from Oconto WI to Little Sturgeon Bay WI- Green Bay south of line from Oconto WI to Little Sturgeon Bay WI- 1143 PM CDT Sun Aug 23 2026 ...SMALL CRAFT SHOULD EXERCISE CAUTION FROM THIS EVENING THROUGH MONDAY MORNING... .REST OF TONIGHT...NW wind 10 to 20 kts. Waves 1 to 3 ft. Clear. .MONDAY...NW wind 10 to 15 kts veering N 5 to 10 kts early in the afternoon. Waves 1 to 3 ft. Mostly sunny. .MONDAY NIGHT...E wind 5 to 10 kts veering SE after midnight. Waves 2 ft or less. Partly cloudy. .TUESDAY...S wind 10 to 15 kts. Waves 2 ft or less. Mostly sunny. $$ LMZ541>543-241000- Rock Island Passage to Sturgeon Bay WI- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 1143 PM CDT Sun Aug 23 2026 .REST OF TONIGHT...NW wind 10 to 20 kts. Waves 1 to 3 ft. Clear. .MONDAY...NW wind 10 to 15 kts veering N 5 to 10 kts early in the afternoon. Waves 2 ft or less. Mostly sunny. .MONDAY NIGHT...E wind 5 to 10 kts veering SW after midnight. Waves 2 ft or less. Partly cloudy. .TUESDAY...S wind 10 to 15 kts. Waves 2 ft or less building to 2 to 4 ft in the afternoon. Mostly sunny. $$ See Lake Michigan Open Lake Forecast for Wednesday through Friday.  757 FZUS53 KGRB 240456 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 1156 PM CDT Sun Aug 23 2026 For waters within five nautical miles of shore on Lake Michigan LMZ521-522-241000- Green Bay south of line from Cedar River to Rock Island Passage and north of a line from Oconto WI to Little Sturgeon Bay WI- Green Bay south of line from Oconto WI to Little Sturgeon Bay WI- 1156 PM CDT Sun Aug 23 2026 ...SMALL CRAFT SHOULD EXERCISE CAUTION FROM THIS EVENING THROUGH MONDAY MORNING... .REST OF TONIGHT...NW wind 10 to 20 kts. Waves 1 to 3 ft. Clear. .MONDAY...NW wind 10 to 15 kts veering N 5 to 10 kts early in the afternoon. Waves 1 to 3 ft. Mostly sunny. .MONDAY NIGHT...E wind 5 to 10 kts veering SE after midnight. Waves 2 ft or less. Partly cloudy. .TUESDAY...S wind 10 to 15 kts. Waves 2 ft or less. Mostly sunny. $$ LMZ541>543-241000- Rock Island Passage to Sturgeon Bay WI- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 1156 PM CDT Sun Aug 23 2026 .REST OF TONIGHT...NW wind 10 to 20 kts. Waves 1 to 3 ft. Clear. .MONDAY...NW wind 10 to 15 kts veering N 5 to 10 kts early in the afternoon. Waves 2 ft or less. Mostly sunny. .MONDAY NIGHT...E wind 5 to 10 kts veering SW after midnight. Waves 2 ft or less. Partly cloudy. .TUESDAY...S wind 10 to 15 kts. Waves 2 ft or less building to 2 to 4 ft in the afternoon. Mostly sunny. $$ See Lake Michigan Open Lake Forecast for Wednesday through Friday.