785 FZUS53 KDLH 201000 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 500 AM CDT Wed May 20 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. LSZ140-201600- Grand Portage to Grand Marais MN- 500 AM CDT Wed May 20 2026 .TODAY...Northwest wind 5 knots becoming southwest 10 to 15 knots in the late morning and afternoon. Mostly sunny. Waves 1 to 2 feet. .TONIGHT...Southwest wind 5 to 10 knots becoming west early in the morning. Mostly clear. Waves 1 to 2 feet. .THURSDAY...Southeast wind 5 to 10 knots. Mostly sunny. Waves 1 foot or less. .THURSDAY NIGHT...East wind 5 to 10 knots becoming northeast after midnight. Partly cloudy. Waves 1 to 2 feet. $$ LSZ141-201600- Grand Marais to Taconite Harbor MN- 500 AM CDT Wed May 20 2026 .TODAY...Northwest wind 5 knots becoming south late in the afternoon. Mostly sunny. Waves 1 foot or less. .TONIGHT...East wind 5 knots early in the evening becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less. .THURSDAY...Northeast wind 5 knots becoming east in the late morning and afternoon. Mostly sunny. Waves 1 foot or less. .THURSDAY NIGHT...Northeast wind 5 to 10 knots. Partly cloudy. Waves 1 to 2 feet. $$ LSZ142-201600- Taconite Harbor to Silver Bay Harbor MN- 500 AM CDT Wed May 20 2026 .TODAY...West wind 5 knots becoming south early in the afternoon, then becoming east late in the afternoon. Mostly sunny. Waves 1 foot or less. .TONIGHT...Northeast wind 5 knots early in the evening becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less. .THURSDAY...Variable winds 10 knots or less becoming east 5 knots in the late morning and afternoon. Mostly sunny. Waves 1 foot or less. .THURSDAY NIGHT...Northeast wind 5 knots. Partly cloudy. Waves 1 foot or less. $$ LSZ143-201600- Silver Bay Harbor to Two Harbors MN- 500 AM CDT Wed May 20 2026 .TODAY...West wind 5 knots becoming southwest late in the morning, then becoming southeast early in the afternoon becoming east late in the afternoon. Mostly sunny. Waves 1 foot or less. .TONIGHT...Northeast wind 5 to 10 knots. Mostly clear. Waves 1 foot or less. .THURSDAY...Northeast wind 5 to 10 knots. Mostly sunny. Waves 1 foot or less. .THURSDAY NIGHT...Northeast wind 5 to 10 knots. Partly cloudy. Waves 1 foot or less. $$ LSZ144-201600- Two Harbors to Duluth MN- 500 AM CDT Wed May 20 2026 .TODAY...West wind 5 knots becoming east late in the afternoon. Sunny. Waves 1 foot or less. .TONIGHT...Northeast wind 5 to 10 knots. Mostly clear. Waves 1 foot or less. .THURSDAY...East wind 5 to 10 knots. Sunny. Waves 1 foot or less. .THURSDAY NIGHT...Northeast wind 5 to 10 knots. Partly cloudy. Waves 1 to 2 feet. $$ LSZ145-201600- Duluth MN to Port Wing WI- 500 AM CDT Wed May 20 2026 .TODAY...West wind 5 knots becoming southeast early in the afternoon, then becoming east late in the afternoon. Sunny. Waves 1 foot or less. .TONIGHT...Northeast wind 5 to 10 knots. Mostly clear. Waves 1 foot or less. .THURSDAY...Northeast wind 5 to 10 knots. Gusts up to 20 knots late in the afternoon. Sunny. Waves 1 to 2 feet. .THURSDAY NIGHT...Northeast wind 10 to 15 knots easing to 5 knots after midnight. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 to 2 feet. $$ LSZ146-201600- Port Wing to Sand Island WI- 500 AM CDT Wed May 20 2026 .TODAY...West wind 5 knots early in the morning becoming variable 10 knots or less, then becoming east 5 to 10 knots in the afternoon. Mostly sunny. Waves 1 foot or less. .TONIGHT...East wind 5 to 10 knots in the evening becoming variable 10 knots or less, then becoming northeast 5 knots early in the morning. Mostly clear. Waves 1 foot or less. .THURSDAY...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. .THURSDAY NIGHT...Northeast wind 5 to 10 knots. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 foot or less. $$ LSZ147-201600- Sand Island to Bayfield WI- 500 AM CDT Wed May 20 2026 .TODAY...Northwest wind 5 knots becoming east in the afternoon. Mostly sunny. Waves 1 foot or less. .TONIGHT...Southeast wind 5 to 10 knots until early morning becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less. .THURSDAY...Southeast wind 5 knots becoming east in the late morning and afternoon. Mostly sunny. Waves 1 foot or less. .THURSDAY NIGHT...East wind 5 to 10 knots until early morning becoming variable 10 knots or less. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 foot or less. $$ LSZ150-201600- Outer Apostle Islands Beyond 5 NM from Mainland- 500 AM CDT Wed May 20 2026 .TODAY...Northwest wind 5 knots becoming southeast in the afternoon. Sunny. Waves 1 foot or less. .TONIGHT...Southeast wind 5 to 10 knots. Mostly clear. Waves 1 foot or less. .THURSDAY...South wind 5 knots becoming east in the afternoon. Sunny. Waves 1 foot or less. .THURSDAY NIGHT...East wind 5 to 10 knots becoming southeast after midnight. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 to 2 feet. $$ LSZ121-201600- Chequamegon Bay-Bayfield to Oak Point WI- 500 AM CDT Wed May 20 2026 .TODAY...Northwest wind 5 knots becoming east in the afternoon. Mostly sunny. Waves 1 foot or less. .TONIGHT...East wind 5 to 10 knots becoming southeast after midnight, then becoming variable 10 knots or less early in the morning. Mostly clear. Waves 1 foot or less. .THURSDAY...South wind 5 knots becoming east in the afternoon. Sunny. Waves 1 foot or less. .THURSDAY NIGHT...East wind 5 to 10 knots in the evening becoming variable 10 knots or less. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 foot or less. $$ LSZ148-201600- Oak Point to Saxon Harbor WI- 500 AM CDT Wed May 20 2026 .TODAY...Northwest wind 5 knots becoming east in the afternoon. Mostly sunny. Waves 1 foot or less. .TONIGHT...East wind 5 to 10 knots becoming south after midnight. Mostly clear. Waves 1 foot or less. .THURSDAY...South wind 5 knots becoming northeast in the afternoon. Sunny. Waves 1 foot or less. .THURSDAY NIGHT...East wind 5 to 10 knots becoming south after midnight. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 foot or less. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH  681 FZUS53 KMKX 201010 NSHMKX Nearshore Marine Forecast National Weather Service Milwaukee/Sullivan WI 510 AM CDT Wed May 20 2026 For waters within five nautical miles of shore on Lake Michigan LMZ643-201600- Sheboygan to Port Washington WI- 510 AM CDT Wed May 20 2026 .TODAY...North wind 10 to 15 knots veering northeast late in the afternoon. Mostly sunny. Waves 1 to 2 feet building to 2 to 4 feet in the afternoon. .TONIGHT...Northeast wind 10 to 15 knots. Partly cloudy. Waves 2 to 4 feet. .THURSDAY...Northeast wind 10 to 15 knots. Partly sunny. Waves 2 to 4 feet subsiding to 1 to 3 feet in the afternoon. .THURSDAY NIGHT...Northeast wind 15 to 20 knots easing to 10 to 15 knots late in the evening, then becoming east 15 to 20 knots after midnight easing to 10 to 15 knots early in the morning. Mostly cloudy. Waves 2 to 4 feet. $$ LMZ644-201600- Port Washington to North Point Light WI- 510 AM CDT Wed May 20 2026 .TODAY...North wind 10 to 15 knots veering northeast late in the morning, then rising to 15 to 20 knots in the afternoon. Mostly sunny. Waves 1 to 2 feet building to 2 to 4 feet in the afternoon. .TONIGHT...Northeast wind 10 to 15 knots rising to 15 to 20 knots late in the evening, then becoming northeast 15 to 20 knots after midnight. Partly cloudy. Waves 3 to 4 feet. .THURSDAY...Northeast wind 15 to 20 knots easing to 10 to 15 knots late in the morning, then becoming northeast 10 to 15 knots in the afternoon. Partly sunny. Waves 3 to 4 feet subsiding to 1 to 3 feet late in the afternoon. .THURSDAY NIGHT...Northeast wind 15 to 20 knots veering east early in the morning. Mostly cloudy. Waves 3 to 4 feet. $$ LMZ645-201600- North Point Light to Wind Point WI- 510 AM CDT Wed May 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH THURSDAY MORNING... .TODAY...North wind 10 to 15 knots becoming northeast 15 to 20 knots in the late morning and afternoon. Mostly sunny. Waves 1 to 2 feet building to 3 to 4 feet in the late morning and afternoon. .TONIGHT...Northeast wind 15 to 20 knots becoming 10 to 20 knots after midnight, then becoming 15 to 20 knots early in the morning. Partly cloudy. Waves 3 to 4 feet building to 4 to 6 feet in the late evening and overnight. .THURSDAY...Northeast wind 15 to 20 knots easing to 10 to 15 knots late in the morning, then becoming northeast 10 to 15 knots in the afternoon. Partly sunny. Waves 3 to 4 feet. .THURSDAY NIGHT...Northeast wind 15 to 20 knots veering east 10 to 20 knots after midnight. Mostly cloudy. Waves 3 to 4 feet. $$ LMZ646-201600- Wind Point WI to Winthrop Harbor IL- 510 AM CDT Wed May 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH THURSDAY MORNING... .TODAY...North wind 10 to 15 knots rising to 15 to 20 knots late in the morning, then veering northeast in the afternoon. Partly sunny. Waves 1 to 2 feet building to 3 to 4 feet in the late morning and afternoon. .TONIGHT...North wind 15 to 20 knots veering northeast early in the morning. Partly cloudy. Waves 3 to 4 feet building to 4 to 6 feet in the late evening and overnight. .THURSDAY...Northeast wind 15 to 20 knots becoming east 10 to 15 knots late in the morning, then backing northeast early in the afternoon becoming northeast 10 to 15 knots with gusts to around 20 knots late in the afternoon. Partly sunny. Waves 3 to 4 feet. .THURSDAY NIGHT...Northeast wind 15 to 20 knots veering east after midnight. Mostly cloudy. Waves 3 to 4 feet. $$ See Lake Michigan Open Waters Forecast for Friday through Sunday.  825 FZUS53 KDLH 201013 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 513 AM CDT Wed May 20 2026 For waters within five nautical miles of shore on Lake Superior. Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. LSZ140-201600- Grand Portage to Grand Marais MN- 513 AM CDT Wed May 20 2026 .TODAY...Northwest wind 5 knots becoming southwest 10 to 15 knots in the late morning and afternoon. Mostly sunny. Waves 1 to 2 feet. .TONIGHT...Southwest wind 5 to 10 knots becoming west early in the morning. Mostly clear. Waves 1 to 2 feet. .THURSDAY...Southeast wind 5 to 10 knots. Mostly sunny. Waves 1 foot or less. .THURSDAY NIGHT...East wind 5 to 10 knots becoming northeast after midnight. Partly cloudy. Waves 1 to 2 feet. $$ LSZ141-201600- Grand Marais to Taconite Harbor MN- 513 AM CDT Wed May 20 2026 .TODAY...West wind 5 knots becoming south late in the afternoon. Mostly sunny. Waves 1 foot or less. .TONIGHT...East wind 5 knots early in the evening becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less. .THURSDAY...Northeast wind 5 knots becoming east in the late morning and afternoon. Mostly sunny. Waves 1 foot or less. .THURSDAY NIGHT...Northeast wind 5 to 10 knots. Partly cloudy. Waves 1 to 2 feet. $$ LSZ142-201600- Taconite Harbor to Silver Bay Harbor MN- 513 AM CDT Wed May 20 2026 .TODAY...West wind 5 knots becoming south early in the afternoon, then becoming east late in the afternoon. Mostly sunny. Waves 1 foot or less. .TONIGHT...Northeast wind 5 knots early in the evening becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less. .THURSDAY...Variable winds 10 knots or less becoming east 5 knots in the late morning and afternoon. Mostly sunny. Waves 1 foot or less. .THURSDAY NIGHT...Northeast wind 5 knots. Partly cloudy. Waves 1 foot or less. $$ LSZ143-201600- Silver Bay Harbor to Two Harbors MN- 513 AM CDT Wed May 20 2026 .TODAY...West wind 5 knots becoming southwest late in the morning, then becoming southeast early in the afternoon becoming east late in the afternoon. Mostly sunny. Waves 1 foot or less. .TONIGHT...Northeast wind 5 to 10 knots. Mostly clear. Waves 1 foot or less. .THURSDAY...Northeast wind 5 to 10 knots. Mostly sunny. Waves 1 foot or less. .THURSDAY NIGHT...Northeast wind 5 to 10 knots. Partly cloudy. Waves 1 foot or less. $$ LSZ144-201600- Two Harbors to Duluth MN- 513 AM CDT Wed May 20 2026 .TODAY...Northwest wind 5 knots becoming southwest late in the morning, then becoming southeast early in the afternoon becoming east late in the afternoon. Sunny. Waves 1 foot or less. .TONIGHT...Northeast wind 5 to 10 knots. Mostly clear. Waves 1 foot or less. .THURSDAY...East wind 5 to 10 knots. Sunny. Waves 1 foot or less. .THURSDAY NIGHT...Northeast wind 5 to 10 knots. Partly cloudy. Waves 1 to 2 feet. $$ LSZ145-201600- Duluth MN to Port Wing WI- 513 AM CDT Wed May 20 2026 .TODAY...West wind 5 knots becoming southeast early in the afternoon, then becoming east late in the afternoon. Sunny. Waves 1 foot or less. .TONIGHT...Northeast wind 5 to 10 knots. Mostly clear. Waves 1 foot or less. .THURSDAY...Northeast wind 5 to 10 knots. Gusts up to 20 knots late in the afternoon. Sunny. Waves 1 to 2 feet. .THURSDAY NIGHT...Northeast wind 10 to 15 knots easing to 5 knots after midnight. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 to 2 feet. $$ LSZ146-201600- Port Wing to Sand Island WI- 513 AM CDT Wed May 20 2026 .TODAY...West wind 5 knots early in the morning becoming variable 10 knots or less, then becoming east 5 to 10 knots in the afternoon. Mostly sunny.Waves 1 foot or less. .TONIGHT...East wind 5 to 10 knots in the evening becoming variable 10 knots or less, then becoming northeast 5 knots early in the morning. Mostly clear. Waves 1 foot or less. .THURSDAY...Variable winds 10 knots or less becoming northeast 5 to 10 knots in the late morning and afternoon. Mostly sunny. Waves 1 foot or less. .THURSDAY NIGHT...Northeast wind 5 to 10 knots. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 foot or less. $$ LSZ147-201600- Sand Island to Bayfield WI- 513 AM CDT Wed May 20 2026 .TODAY...Northwest wind 5 knots becoming east in the afternoon. Mostly sunny. Waves 1 foot or less. .TONIGHT...Southeast wind 5 to 10 knots until early morning becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less. .THURSDAY...Southeast wind 5 knots becoming east in the late morning and afternoon. Mostly sunny. Waves 1 foot or less. .THURSDAY NIGHT...East wind 5 to 10 knots until early morning becoming variable 10 knots or less. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 foot or less. $$ LSZ150-201600- Outer Apostle Islands Beyond 5 NM from Mainland- 513 AM CDT Wed May 20 2026 .TODAY...Northwest wind 5 knots becoming southeast in the afternoon. Sunny. Waves 1 foot or less. .TONIGHT...Southeast wind 5 to 10 knots. Mostly clear. Waves 1 foot or less. .THURSDAY...South wind 5 knots becoming east in the afternoon. Sunny. Waves 1 foot or less. .THURSDAY NIGHT...East wind 5 to 10 knots becoming southeast after midnight. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 to 2 feet. $$ LSZ121-201600- Chequamegon Bay-Bayfield to Oak Point WI- 513 AM CDT Wed May 20 2026 .TODAY...North wind 5 knots becoming east in the afternoon. Mostly sunny. Waves 1 foot or less. .TONIGHT...East wind 5 to 10 knots becoming southeast after midnight, then becoming variable 10 knots or less early in the morning. Mostly clear. Waves 1 foot or less. .THURSDAY...South wind 5 knots becoming east in the afternoon. Sunny. Waves 1 foot or less. .THURSDAY NIGHT...East wind 5 to 10 knots in the evening becoming variable 10 knots or less. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 foot or less. $$ LSZ148-201600- Oak Point to Saxon Harbor WI- 513 AM CDT Wed May 20 2026 .TODAY...North wind 5 knots becoming east in the afternoon. Mostly sunny. Waves 1 foot or less. .TONIGHT...East wind 5 to 10 knots becoming south after midnight. Mostly clear. Waves 1 foot or less. .THURSDAY...South wind 5 knots becoming northeast in the afternoon. Sunny. Waves 1 foot or less. .THURSDAY NIGHT...East wind 5 to 10 knots becoming south after midnight. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 foot or less. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH