FZUS53 KDLH 162138 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 438 PM CDT Thu Apr 16 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. LSZ140-170400- Grand Portage to Grand Marais MN- 438 PM CDT Thu Apr 16 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING... .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots after midnight. Patchy fog through the night. Slight chance of rain and snow late in the night. Waves 1 to 3 feet. .FRIDAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots in the morning. Patchy fog in the morning. Rain likely and chance of thunderstorms in the afternoon. Waves 1 to 3 feet. .FRIDAY NIGHT...Northwest wind 15 to 20 knots. Gusts up to 25 knots increasing to 30 knots late in the evening, then decreasing to 25 knots after midnight. Chance of thunderstorms in the evening. Rain likely through the night. Slight chance of light freezing rain after midnight. Waves 1 to 3 feet. .SATURDAY...West wind 20 to 25 knots. Gusts up to 25 knots increasing to 30 knots in the late morning and afternoon. Slight chance of light freezing rain and snow in the morning. Waves 1 to 3 feet building to 2 to 4 feet in the late morning and afternoon. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ141-170400- Grand Marais to Taconite Harbor MN- 438 PM CDT Thu Apr 16 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING... .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots after midnight. Patchy fog through the night. Slight chance of rain late in the night. Waves 1 to 3 feet. .FRIDAY...Northeast wind 10 to 15 knots with gusts to around 20 knots becoming north with gusts to around 20 knots late in the afternoon. Patchy fog in the morning. Rain likely and chance of thunderstorms in the afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet in the afternoon. .FRIDAY NIGHT...Northwest wind 15 to 20 knots with gusts to around 30 knots. Rain likely and chance of thunderstorms in the evening. Waves 1 to 3 feet. .SATURDAY...West wind 20 to 25 knots with gusts to around 30 knots. Partly sunny. Waves 1 to 3 feet building to 2 to 4 feet in the late morning and afternoon. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ142-170400- Taconite Harbor to Silver Bay Harbor MN- 438 PM CDT Thu Apr 16 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING... .TONIGHT...Northeast wind 10 to 15 knots. Patchy fog through the night. Waves 1 to 3 feet. .FRIDAY...Northeast wind 10 to 15 knots becoming north with gusts to around 20 knots late in the afternoon. Patchy fog in the morning. Rain and chance of thunderstorms in the afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet in the afternoon. .FRIDAY NIGHT...Northwest wind 15 to 20 knots with gusts to around 30 knots. Chance of thunderstorms in the evening. Chance of rain through the night. Waves 1 to 2 feet. .SATURDAY...West wind 15 to 20 knots with gusts to around 25 knots. Slight chance of snow. Waves 1 to 3 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ143-170400- Silver Bay Harbor to Two Harbors MN- 438 PM CDT Thu Apr 16 2026 .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots until early morning. Patchy fog through the night. Waves 1 to 3 feet. .FRIDAY...Northeast wind 10 to 15 knots becoming northwest late in the afternoon. Patchy fog through the day. Rain and chance of thunderstorms in the afternoon. Waves 1 to 3 feet. .FRIDAY NIGHT...Northwest wind 15 to 20 knots. Gusts up to 20 knots increasing to 25 knots in the late evening and overnight. Chance of thunderstorms in the evening. Chance of rain through the night. Waves 1 to 2 feet. .SATURDAY...West wind 15 to 20 knots with gusts to around 25 knots. Partly sunny. Waves 1 to 3 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ144-170400- Two Harbors to Duluth MN- 438 PM CDT Thu Apr 16 2026 .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots until early morning. Patchy fog in the late evening and overnight. Waves 1 to 3 feet building to 2 to 4 feet in the late evening and overnight. .FRIDAY...Northeast wind 10 to 15 knots becoming northwest with gusts to around 25 knots late in the afternoon. Patchy fog in the morning. Rain and chance of thunderstorms in the afternoon. Waves 1 to 3 feet. .FRIDAY NIGHT...West wind 15 to 20 knots with gusts to around 25 knots. Chance of thunderstorms in the evening. Chance of rain through the night. Waves 1 to 3 feet. .SATURDAY...West wind 20 to 25 knots. Gusts up to 30 knots late in the morning then 30 knots late in the afternoon. Partly sunny. Waves 2 to 4 feet. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ145-170400- Duluth MN to Port Wing WI- 438 PM CDT Thu Apr 16 2026 .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots in the evening. Patchy fog through the night. Waves 2 to 4 feet. .FRIDAY...Northeast wind 10 to 15 knots becoming northwest with gusts to around 25 knots late in the afternoon. Patchy fog through the day. Rain and chance of thunderstorms in the afternoon. Waves 1 to 3 feet. .FRIDAY NIGHT...West wind 20 to 25 knots. Chance of thunderstorms in the evening. Chance of rain through the night. Waves 2 to 4 feet. A small craft advisory may be needed. .SATURDAY...West wind 20 to 25 knots. Gusts up to 30 knots in the afternoon. Mostly cloudy. Waves 3 to 5 feet. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ146-170400- Port Wing to Sand Island WI- 438 PM CDT Thu Apr 16 2026 .TONIGHT...Northeast wind 10 to 15 knots. Patchy fog in the late evening and overnight. Waves 1 to 3 feet. .FRIDAY...Northeast wind 5 to 10 knots becoming northwest 10 to 15 knots late in the afternoon. Patchy fog through the day. Rain and chance of thunderstorms in the afternoon. Waves 1 to 3 feet. .FRIDAY NIGHT...West wind 20 to 25 knots. Chance of thunderstorms in the evening. Chance of rain through the night. Waves 1 to 2 feet building to 2 to 4 feet in the late evening and overnight. A small craft advisory may be needed. .SATURDAY...West wind 20 to 25 knots easing to 15 to 20 knots in the late morning and afternoon. Partly sunny. Waves 3 to 5 feet. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ147-170400- Sand Island to Bayfield WI- 438 PM CDT Thu Apr 16 2026 .TONIGHT...East wind 5 to 10 knots. Patchy fog after midnight. Waves 1 to 3 feet. .FRIDAY...Southeast wind 5 to 10 knots with gusts to around 20 knots becoming northeast early in the afternoon, then becoming west 10 to 15 knots late in the afternoon. Rain and chance of thunderstorms in the afternoon. Waves 1 to 3 feet. .FRIDAY NIGHT...West wind 20 to 25 knots. Rain likely and chance of thunderstorms in the evening. Waves 1 to 2 feet building to 2 to 4 feet after midnight. A small craft advisory may be needed. .SATURDAY...West wind 20 to 25 knots. Slight chance of snow. Waves 3 to 5 feet. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ150-170400- Outer Apostle Islands Beyond 5 NM from Mainland- 438 PM CDT Thu Apr 16 2026 .TONIGHT...East wind 5 to 10 knots becoming southeast late in the night. Patchy fog. Waves 1 to 3 feet. .FRIDAY...Southeast wind 5 to 10 knots becoming west 10 to 15 knots with gusts to around 20 knots late in the afternoon. Rain likely and chance of thunderstorms in the afternoon. Waves 1 to 3 feet. .FRIDAY NIGHT...West wind 20 to 25 knots. Gusts up to 30 knots. Chance of thunderstorms in the evening. Rain likely through the night. Waves 1 to 3 feet building to 2 to 4 feet after midnight. A small craft advisory may be needed. .SATURDAY...West wind 20 to 25 knots. Gusts up to 30 knots decreasing to 25 knots in the late morning and afternoon. Slight chance of light freezing rain in the morning. Slight chance of snow through the day. Waves 4 to 6 feet. Waves occasionally to 7 feet. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ121-170400- Chequamegon Bay-Bayfield to Oak Point WI- 438 PM CDT Thu Apr 16 2026 .TONIGHT...Northeast wind 5 knots becoming south with gusts to around 20 knots late in the night. Mostly clear. Waves 1 foot or less. .FRIDAY...South wind 10 to 15 knots with gusts to around 20 knots becoming southwest late in the afternoon. Rain and chance of thunderstorms in the afternoon. Waves 1 foot or less. .FRIDAY NIGHT...West wind 10 knots with gusts to around 20 knots rising to 10 to 15 knots with gusts to around 25 knots in the late evening and overnight. Rain likely and chance of thunderstorms in the evening. Waves 1 to 2 feet. .SATURDAY...West wind 15 to 20 knots easing to 10 to 15 knots in the afternoon. Gusts up to 25 knots. Slight chance of snow. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ148-170400- Oak Point to Saxon Harbor WI- 438 PM CDT Thu Apr 16 2026 .TONIGHT...Northeast wind 5 knots becoming southeast with gusts to around 20 knots after midnight, then becoming south 10 to 15 knots with gusts to around 25 knots late in the night. Mostly clear. Waves 1 to 2 feet. .FRIDAY...South wind 10 to 15 knots becoming west 15 to 20 knots late in the afternoon. Rain and chance of thunderstorms in the afternoon. Waves 1 to 2 feet. .FRIDAY NIGHT...West wind 15 to 20 knots. Gusts up to 25 knots after midnight. Chance of thunderstorms in the evening. Rain likely through the night. Waves 1 to 3 feet. .SATURDAY...West wind 15 to 20 knots with gusts to around 25 knots. Slight chance of snow. Waves 2 to 4 feet. Note...Wave height forecasts are for ice free areas. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH