FZUS53 KDLH 190937 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 437 AM CDT Thu Mar 19 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. LSZ140-191600- Grand Portage to Grand Marais MN- 437 AM CDT Thu Mar 19 2026 .TODAY...North wind 5 to 10 knots becoming southeast in the afternoon. Slight chance of snow late in the afternoon. Waves 1 foot or less. .TONIGHT...Southeast wind 5 to 10 knots becoming west after midnight. Patchy fog in the evening. Chance of snow, light freezing rain and light freezing drizzle in the evening, then slight chance of very light freezing drizzle after midnight. Waves 1 foot or less. .FRIDAY...Northwest wind 5 knots becoming southwest in the afternoon. Partly sunny. Waves 1 foot or less. .FRIDAY NIGHT...West wind 5 to 10 knots becoming northwest after midnight. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ141-191600- Grand Marais to Taconite Harbor MN- 437 AM CDT Thu Mar 19 2026 .TODAY...North wind 5 knots becoming southeast in the afternoon. Slight chance of light freezing drizzle and snow late in the afternoon. Waves 1 foot or less. .TONIGHT...East wind 5 to 10 knots becoming northeast late in the evening, then becoming southwest after midnight. Patchy fog in the evening. Chance of snow, light freezing rain and slight chance of light freezing drizzle in the evening. Waves 1 foot or less. .FRIDAY...Southwest wind 5 to 10 knots. Partly sunny. Waves 1 foot or less. .FRIDAY NIGHT...West wind 5 to 10 knots becoming northwest in the late evening and overnight. Mostly cloudy. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ142-191600- Taconite Harbor to Silver Bay Harbor MN- 437 AM CDT Thu Mar 19 2026 .TODAY...North wind 5 knots becoming east in the afternoon. Slight chance of drizzle and light freezing drizzle late in the afternoon. Waves 1 foot or less. .TONIGHT...East wind 5 knots becoming west late in the evening, then becoming southwest after midnight. Patchy fog in the evening. Slight chance of drizzle, light freezing drizzle and snow in the evening. Waves 1 foot or less. .FRIDAY...Southwest wind 5 to 10 knots. Partly sunny. Waves 1 foot or less. .FRIDAY NIGHT...Southwest wind 5 to 10 knots becoming northwest in the late evening and overnight. Mostly cloudy. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ143-191600- Silver Bay Harbor to Two Harbors MN- 437 AM CDT Thu Mar 19 2026 .TODAY...Northeast wind 5 knots becoming east in the afternoon. Slight chance of drizzle late in the afternoon. Waves 1 foot or less. .TONIGHT...Northeast wind 5 to 10 knots becoming northwest late in the evening, then becoming southwest after midnight. Patchy fog in the evening. Slight chance of drizzle and very light freezing drizzle in the evening. Waves 1 foot or less. .FRIDAY...Southwest wind 5 to 10 knots. Partly sunny. Waves 1 foot or less. .FRIDAY NIGHT...Southwest wind 5 to 10 knots becoming northwest in the late evening and overnight. Mostly cloudy. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ144-191600- Two Harbors to Duluth MN- 437 AM CDT Thu Mar 19 2026 .TODAY...Northeast wind 5 to 10 knots. Partly sunny. Waves 1 foot or less. .TONIGHT...East wind 5 to 10 knots becoming southwest in the late evening and early morning, then becoming southwest 5 to 10 knots early in the morning. Patchy fog after midnight. Waves 1 foot or less. .FRIDAY...West wind 5 to 10 knots. Partly sunny. Waves 1 foot or less. .FRIDAY NIGHT...West wind 5 to 10 knots becoming northwest after midnight. Mostly cloudy. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ145-191600- Duluth MN to Port Wing WI- 437 AM CDT Thu Mar 19 2026 .TODAY...Northeast wind 5 to 10 knots. Partly sunny. Waves 1 foot or less. .TONIGHT...East wind 5 to 10 knots becoming southwest in the late evening and overnight. Patchy fog after midnight. Waves 1 to 2 feet. .FRIDAY...West wind 5 to 10 knots. Partly sunny. Waves 1 foot or less. .FRIDAY NIGHT...West wind 5 to 10 knots. Mostly cloudy. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ146-191600- Port Wing to Sand Island WI- 437 AM CDT Thu Mar 19 2026 .TODAY...East wind 5 to 10 knots. Partly sunny. Waves 1 foot or less. .TONIGHT...Southeast wind 5 knots becoming southwest 10 to 15 knots in the late evening and overnight. Slight chance of drizzle in the evening. Patchy fog after midnight. Waves 1 to 2 feet. .FRIDAY...West wind 5 to 10 knots. Partly sunny. Waves 1 to 2 feet. .FRIDAY NIGHT...West wind 5 to 10 knots. Mostly cloudy. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ147-191600- Sand Island to Bayfield WI- 437 AM CDT Thu Mar 19 2026 .TODAY...Northeast wind 5 knots becoming east in the late morning and afternoon. Partly sunny. Waves 1 foot or less. .TONIGHT...Southeast wind 5 knots becoming southwest in the late evening and early morning, then becoming west 10 to 15 knots early in the morning. Slight chance of drizzle in the evening. Patchy fog through the night. Waves 1 to 2 feet. .FRIDAY...West wind 5 to 10 knots. Partly sunny. Waves 1 to 2 feet. .FRIDAY NIGHT...West wind 5 to 10 knots. Mostly cloudy. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ150-191600- Outer Apostle Islands Beyond 5 NM from Mainland- 437 AM CDT Thu Mar 19 2026 .TODAY...East wind 5 to 10 knots. Slight chance of drizzle and very light freezing drizzle late in the afternoon. Waves 1 foot or less. .TONIGHT...Southeast wind 5 to 10 knots becoming southwest in the late evening and early morning, then becoming west 10 to 15 knots early in the morning. Patchy fog in the evening. Slight chance of drizzle and light freezing drizzle in the evening. Waves 1 to 2 feet. .FRIDAY...West wind 5 to 10 knots. Partly sunny. Waves 1 to 2 feet. .FRIDAY NIGHT...West wind 5 to 10 knots. Mostly cloudy. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ148-191600- Oak Point to Saxon Harbor WI- 437 AM CDT Thu Mar 19 2026 .TODAY...East wind 5 to 10 knots. Slight chance of drizzle late in the afternoon. Waves 1 foot or less. .TONIGHT...South wind 5 knots becoming southwest with gusts to around 20 knots in the late evening and overnight. Slight chance of drizzle in the evening. Waves 1 foot or less. .FRIDAY...West wind 5 to 10 knots. Partly sunny. Waves 1 foot or less. .FRIDAY NIGHT...Southwest wind 5 to 10 knots. Mostly cloudy. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH