FZUS53 KDLH 131930 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 229 PM CDT Mon Apr 13 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. LSZ140-140400- Grand Portage to Grand Marais MN- 229 PM CDT Mon Apr 13 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM CDT THIS EVENING THROUGH TUESDAY MORNING... .TONIGHT...Northeast wind 10 to 15 knots with gusts to around 20 knots. Slight chance of rain in the evening. Chance of rain after midnight. Patchy fog in the late evening and overnight. Waves 1 to 3 feet. .TUESDAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots in the morning. Patchy fog through the day. Slight chance of rain in the morning. Chance of rain in the afternoon. Waves 1 to 3 feet. .TUESDAY NIGHT...Northeast wind 5 to 10 knots becoming north after midnight. Mostly cloudy. Waves 1 to 2 feet. .WEDNESDAY...Northeast wind 5 knots becoming east in the late morning and afternoon. Partly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ141-140400- Grand Marais to Taconite Harbor MN- 229 PM CDT Mon Apr 13 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM CDT THIS EVENING THROUGH TUESDAY MORNING... .TONIGHT...Northeast wind 10 to 15 knots with gusts to around 20 knots. Slight chance of rain in the evening. Chance of rain after midnight. Patchy fog in the late evening and overnight. Waves 1 to 2 feet building to 1 to 3 feet after midnight. .TUESDAY...Northeast wind 5 to 10 knots. Gusts up to 20 knots early in the morning. Patchy fog through the day. Slight chance of rain through the day. Waves 1 to 3 feet. .TUESDAY NIGHT...Northeast wind 5 knots becoming north in the late evening and early morning, then becoming variable 10 knots or less early in the morning. Mostly cloudy. Waves 1 to 2 feet. .WEDNESDAY...Variable winds 10 knots or less becoming east 5 knots in the late morning and afternoon. Partly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ142-140400- Taconite Harbor to Silver Bay Harbor MN- 229 PM CDT Mon Apr 13 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM CDT THIS EVENING THROUGH TUESDAY AFTERNOON... .TONIGHT...Northeast wind 5 to 10 knots. Gusts up to 20 knots after midnight. Chance of rain early in the evening, then slight chance of rain late in the evening. Chance of rain after midnight. Patchy fog in the late evening and overnight. Waves 1 to 2 feet building to 2 to 4 feet after midnight. .TUESDAY...Northeast wind 5 to 10 knots. Patchy fog through the day. Slight chance of rain through the day. Waves 2 to 4 feet subsiding to 1 to 3 feet late in the afternoon. .TUESDAY NIGHT...Northeast wind 5 knots early in the evening becoming variable 10 knots or less. Mostly cloudy. Waves 1 to 2 feet. .WEDNESDAY...Variable winds 10 knots or less becoming east 5 knots in the late morning and afternoon. Partly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ143-140400- Silver Bay Harbor to Two Harbors MN- 229 PM CDT Mon Apr 13 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM CDT THIS EVENING THROUGH TUESDAY AFTERNOON... .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots in the late evening and overnight. Chance of rain. Patchy fog in the late evening and overnight. Waves 1 to 2 feet building to 2 to 4 feet in the late evening and overnight. .TUESDAY...Northeast wind 10 to 15 knots easing to 5 knots late in the afternoon. Patchy fog through the day. Slight chance of rain through the day. Waves 2 to 4 feet subsiding to 1 to 3 feet late in the afternoon. .TUESDAY NIGHT...Northeast wind 5 knots. Mostly cloudy. Waves 1 to 2 feet. .WEDNESDAY...Northeast wind 5 to 10 knots. Partly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ144-140400- Two Harbors to Duluth MN- 229 PM CDT Mon Apr 13 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM CDT THIS EVENING THROUGH TUESDAY AFTERNOON... .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots in the late evening and overnight. Chance of rain until early morning. Slight chance of rain late in the night. Patchy fog in the late evening and overnight. Waves 2 to 4 feet. .TUESDAY...Northeast wind 10 to 15 knots easing to 5 knots late in the afternoon. Patchy fog through the day. Slight chance of rain through the day. Waves 2 to 4 feet subsiding to 1 to 3 feet late in the afternoon. .TUESDAY NIGHT...Northeast wind 5 knots. Mostly cloudy. Waves 1 to 2 feet. .WEDNESDAY...Northeast wind 5 to 10 knots. Mostly cloudy in the morning then becoming mostly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ145-140400- Duluth MN to Port Wing WI- 229 PM CDT Mon Apr 13 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM CDT THIS EVENING THROUGH TUESDAY AFTERNOON... .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots in the late evening and overnight. Chance of rain until early morning. Slight chance of rain late in the night. Patchy fog in the late evening and overnight. Waves 2 to 4 feet. .TUESDAY...Northeast wind 10 to 15 knots. Patchy fog through the day. Slight chance of rain through the day. Waves 2 to 4 feet subsiding to 1 to 3 feet in the afternoon. .TUESDAY NIGHT...Northeast wind 5 to 10 knots. Mostly cloudy. Waves 1 to 2 feet. .WEDNESDAY...Northeast wind 5 to 10 knots. Mostly cloudy in the morning then becoming mostly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ146-140400- Port Wing to Sand Island WI- 229 PM CDT Mon Apr 13 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM CDT THIS EVENING THROUGH TUESDAY AFTERNOON... .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots in the late evening and overnight. Chance of rain until early morning. Slight chance of rain late in the night. Patchy fog in the late evening and overnight. Waves 1 to 2 feet building to 2 to 4 feet in the late evening and overnight. .TUESDAY...Northeast wind 10 to 15 knots easing to 5 knots late in the afternoon. Patchy fog through the day. Slight chance of rain in the afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet late in the afternoon. .TUESDAY NIGHT...Northeast wind 5 knots. Mostly cloudy. Waves 1 to 2 feet. .WEDNESDAY...Northeast wind 5 to 10 knots. Mostly cloudy in the morning then becoming mostly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ147-140400- Sand Island to Bayfield WI- 229 PM CDT Mon Apr 13 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM CDT THIS EVENING THROUGH TUESDAY AFTERNOON... .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots after midnight. Chance of rain through the night. Patchy fog in the late evening and overnight. Waves 1 to 2 feet building to 2 to 4 feet in the late evening and overnight. .TUESDAY...Northeast wind 5 to 10 knots. Patchy fog through the day. Waves 2 to 4 feet subsiding to 1 to 3 feet late in the afternoon. .TUESDAY NIGHT...Northeast wind 5 knots in the evening becoming variable 10 knots or less. Mostly cloudy. Waves 1 to 2 feet. .WEDNESDAY...Northeast wind 5 knots. Partly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ150-140400- Outer Apostle Islands Beyond 5 NM from Mainland- 229 PM CDT Mon Apr 13 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM CDT THIS EVENING THROUGH TUESDAY AFTERNOON... .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots in the late evening and overnight. Chance of rain through the night. Patchy fog in the late evening and overnight. Waves 1 to 2 feet building to 3 to 5 feet in the late evening and overnight. Waves occasionally to 7 feet. .TUESDAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots early in the morning. Patchy fog through the day. Waves 3 to 5 feet. .TUESDAY NIGHT...Northeast wind 5 knots. Mostly cloudy. Waves 1 to 3 feet. .WEDNESDAY...Northeast wind 5 to 10 knots. Partly sunny. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ148-140400- Oak Point to Saxon Harbor WI- 229 PM CDT Mon Apr 13 2026 .TONIGHT...Northeast wind 5 to 10 knots. Slight chance of thunderstorms in the evening. Chance of rain until early morning. Slight chance of rain late in the night. Patchy fog in the late evening and overnight. Waves 1 to 2 feet building to 2 to 4 feet in the late evening and overnight. .TUESDAY...Northeast wind 5 to 10 knots. Patchy fog through the day. Waves 1 to 3 feet. .TUESDAY NIGHT...North wind 5 knots. Mostly cloudy. Waves 1 to 2 feet. .WEDNESDAY...Northeast wind 5 knots. Partly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH