FZUS53 KDLH 231953 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 253 PM CDT Mon Mar 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. LSZ140-240400- Grand Portage to Grand Marais MN- 253 PM CDT Mon Mar 23 2026 .TONIGHT...Southwest wind 15 to 20 knots with gusts to around 30 knots becoming west 10 to 15 knots with gusts to around 25 knots late in the night. Slight chance of snow in the late evening and early morning. Waves 1 to 3 feet building to 2 to 4 feet in the late evening and overnight. .TUESDAY...Northwest wind 5 to 10 knots becoming north late in the morning, then becoming east in the afternoon. Mostly sunny. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late morning and afternoon. A small craft advisory may be needed. .TUESDAY NIGHT...East wind 5 to 10 knots becoming northeast early in the morning. Slight chance of snow after midnight. Waves 1 to 2 feet. .WEDNESDAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots until late afternoon. Chance of snow. Waves 1 to 3 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ141-240400- Grand Marais to Taconite Harbor MN- 253 PM CDT Mon Mar 23 2026 .TONIGHT...Southwest wind 10 to 15 knots with gusts to around 20 knots. Slight chance of snow until early morning. Waves 1 to 3 feet. .TUESDAY...Northwest wind 5 knots becoming north late in the morning, then becoming southeast in the afternoon. Mostly sunny. Waves 1 to 2 feet. .TUESDAY NIGHT...East wind 5 to 10 knots. Slight chance of snow after midnight. Waves 1 to 3 feet. .WEDNESDAY...Northeast wind 5 to 10 knots. Slight chance of snow. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ142-240400- Taconite Harbor to Silver Bay Harbor MN- 253 PM CDT Mon Mar 23 2026 .TONIGHT...Southwest wind 15 to 20 knots becoming west 10 to 15 knots with gusts to around 20 knots late in the night. Slight chance of snow in the evening. Waves 1 to 2 feet. .TUESDAY...Northwest wind 5 knots becoming east in the afternoon. Partly sunny. Waves 1 foot or less. .TUESDAY NIGHT...Northeast wind 5 knots. Slight chance of snow after midnight. Waves 1 to 3 feet. .WEDNESDAY...Northeast wind 5 to 10 knots. Slight chance of snow through the day. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ143-240400- Silver Bay Harbor to Two Harbors MN- 253 PM CDT Mon Mar 23 2026 .TONIGHT...South wind 10 to 15 knots with gusts to around 20 knots becoming southwest 15 to 20 knots with gusts to around 25 knots in the late evening and overnight. Slight chance of snow late in the evening. Waves 1 to 2 feet. .TUESDAY...Northwest wind 5 knots becoming east in the afternoon. Partly sunny. Waves 1 foot or less. .TUESDAY NIGHT...Northeast wind 5 to 10 knots. Slight chance of rain and snow after midnight. Waves 1 to 3 feet. .WEDNESDAY...Northeast wind 5 to 10 knots. Slight chance of snow in the morning. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ144-240400- Two Harbors to Duluth MN- 253 PM CDT Mon Mar 23 2026 .TONIGHT...Southwest wind 10 to 15 knots with gusts to around 25 knots rising to 15 to 20 knots with gusts to around 25 knots after midnight. Slight chance of snow in the late evening and early morning. Waves 1 to 2 feet. .TUESDAY...Northwest wind 5 knots becoming northeast in the late morning and afternoon. Partly sunny. Waves 1 foot or less. .TUESDAY NIGHT...Northeast wind 5 to 10 knots. Mostly cloudy. Waves 1 to 2 feet. .WEDNESDAY...Northeast wind 5 to 10 knots. Partly sunny. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ145-240400- Duluth MN to Port Wing WI- 253 PM CDT Mon Mar 23 2026 .TONIGHT...Southwest wind 10 to 15 knots with gusts to around 25 knots becoming southwest 10 to 15 knots with gusts to around 20 knots late in the night. Slight chance of rain late in the evening. Slight chance of snow in the late evening and early morning. Waves 1 to 2 feet. .TUESDAY...West wind 5 knots becoming northeast in the late morning and afternoon. Partly sunny. Waves 1 to 2 feet. .TUESDAY NIGHT...Northeast wind 5 to 10 knots. Mostly cloudy. Waves 1 to 2 feet. .WEDNESDAY...Northeast wind 5 to 10 knots. Partly sunny. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ146-240400- Port Wing to Sand Island WI- 253 PM CDT Mon Mar 23 2026 .TONIGHT...South wind 10 to 15 knots with gusts to around 20 knots becoming southwest 15 to 20 knots after midnight. Slight chance of snow in the late evening and early morning. Waves 1 to 2 feet. .TUESDAY...West wind 5 knots becoming northeast in the late morning and afternoon. Partly sunny. Waves 1 to 2 feet. .TUESDAY NIGHT...Northeast wind 5 to 10 knots. Mostly cloudy. Waves 1 to 2 feet. .WEDNESDAY...Northeast wind 5 to 10 knots. Slight chance of snow in the morning. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ147-240400- Sand Island to Bayfield WI- 253 PM CDT Mon Mar 23 2026 .TONIGHT...South wind 5 to 10 knots becoming southwest 10 to 15 knots with gusts to around 20 knots in the late evening and overnight. Slight chance of snow in the late evening and early morning. Waves 1 to 2 feet. .TUESDAY...West wind 5 knots becoming north late in the morning, then becoming east in the afternoon. Partly sunny. Waves 1 to 2 feet. .TUESDAY NIGHT...East wind 5 knots. Patchy fog after midnight. Waves 1 to 2 feet. .WEDNESDAY...Northeast wind 5 to 10 knots. Slight chance of snow in the morning. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ150-240400- Outer Apostle Islands Beyond 5 NM from Mainland- 253 PM CDT Mon Mar 23 2026 .TONIGHT...South wind 10 to 15 knots becoming southwest 15 to 20 knots in the late evening and overnight. Slight chance of snow in the late evening and early morning. Waves 1 to 3 feet. .TUESDAY...West wind 5 to 10 knots becoming north late in the morning, then becoming east in the afternoon. Partly sunny. Waves 1 to 2 feet. .TUESDAY NIGHT...East wind 5 to 10 knots. Mostly cloudy. Waves 1 to 3 feet. .WEDNESDAY...Northeast wind 5 to 10 knots. Slight chance of snow in the morning. Waves 1 to 3 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ148-240400- Oak Point to Saxon Harbor WI- 253 PM CDT Mon Mar 23 2026 .TONIGHT...South wind 10 to 15 knots with gusts to around 20 knots becoming southwest with gusts to around 20 knots after midnight. Slight chance of rain late in the evening. Slight chance of snow in the late evening and early morning. Waves 1 to 2 feet. .TUESDAY...West wind 5 to 10 knots becoming north late in the morning, then becoming northeast in the afternoon. Partly sunny. Waves 1 foot or less. .TUESDAY NIGHT...East wind 5 to 10 knots becoming southeast after midnight. Mostly cloudy. Waves 1 to 2 feet. .WEDNESDAY...East wind 5 to 10 knots becoming northeast in the afternoon. Partly sunny. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH