FZUS53 KDLH 121824 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 124 PM CDT Sun Apr 12 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. LSZ140-122200- Grand Portage to Grand Marais MN- 124 PM CDT Sun Apr 12 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 1 AM CDT MONDAY... .REST OF TODAY...East wind 5 to 10 knots. Patchy dense fog. Rain showers likely and chance of thunderstorms. Waves 1 to 3 feet. .TONIGHT...East wind 5 to 10 knots becoming west with gusts to around 20 knots in the late evening and overnight. Chance of showers and thunderstorms in the evening. Areas of dense fog in the evening, then patchy fog after midnight. Waves 1 to 2 feet. .MONDAY...West wind 5 to 10 knots becoming north early in the afternoon, then becoming east late in the afternoon. Patchy fog in the morning. Waves 1 to 2 feet. .MONDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots in the late evening and overnight. Rain showers likely through the night. Waves 1 to 3 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ141-122200- Grand Marais to Taconite Harbor MN- 124 PM CDT Sun Apr 12 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 1 AM CDT MONDAY... .REST OF TODAY...Northeast wind 5 to 10 knots. Areas of dense fog. Rain showers likely and chance of thunderstorms. Waves 1 to 2 feet. .TONIGHT...Northeast wind 5 knots becoming west with gusts to around 20 knots in the late evening and overnight. Chance of rain showers and slight chance of thunderstorms in the evening. Areas of dense fog in the evening, then patchy fog after midnight. Waves 1 to 2 feet. .MONDAY...West wind 5 knots becoming north early in the afternoon, then becoming east late in the afternoon. Patchy fog in the morning. Waves 1 foot or less. .MONDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots in the late evening and overnight. Rain showers likely. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ142-122200- Taconite Harbor to Silver Bay Harbor MN- 124 PM CDT Sun Apr 12 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 1 AM CDT MONDAY... .REST OF TODAY...Northeast wind 5 to 10 knots. Areas of dense fog. Rain showers likely and chance of thunderstorms. Waves 1 to 2 feet. .TONIGHT...North wind 5 knots becoming west with gusts to around 20 knots in the late evening and overnight. Chance of rain showers and slight chance of thunderstorms in the evening. Patchy dense fog through the night. Waves 1 foot or less. .MONDAY...West wind 5 knots early in the morning becoming variable 10 knots or less, then becoming northeast 5 knots in the afternoon. Patchy fog in the morning. Waves 1 foot or less. .MONDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots in the late evening and overnight. Patchy fog in the evening. Rain showers in the evening. Slight chance of thunderstorms through the night. Chance of rain showers after midnight. Waves 1 to 3 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ143-122200- Silver Bay Harbor to Two Harbors MN- 124 PM CDT Sun Apr 12 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 1 AM CDT MONDAY... .REST OF TODAY...Northeast wind 5 to 10 knots. Patchy dense fog early in the afternoon. Areas of dense fog late. Rain showers likely early in the afternoon. Chance of thunderstorms through the day. Chance of rain showers late. Waves 1 to 2 feet. .TONIGHT...North wind 5 to 10 knots becoming west in the late evening and overnight. Slight chance of showers and thunderstorms in the evening. Areas of dense fog in the evening, then patchy fog after midnight. Waves 1 foot or less. .MONDAY...West wind 5 knots becoming northeast in the afternoon. Patchy fog in the morning. Slight chance of rain showers in the afternoon. Waves 1 foot or less. .MONDAY NIGHT...Northeast wind 15 to 20 knots. Rain showers and slight chance of thunderstorms. Waves 1 to 3 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ144-122200- Two Harbors to Duluth MN- 124 PM CDT Sun Apr 12 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 1 AM CDT MONDAY... .REST OF TODAY...Northeast wind 5 to 10 knots. Patchy dense fog. Chance of showers and thunderstorms. Waves 1 foot or less. .TONIGHT...West wind 10 to 15 knots. Slight chance of showers and thunderstorms in the evening. Patchy dense fog through the night. Waves 1 foot or less. .MONDAY...West wind 5 knots becoming north late in the morning, then becoming northeast in the afternoon. Patchy fog in the morning. Slight chance of rain showers in the afternoon. Waves 1 foot or less. .MONDAY NIGHT...Northeast wind 15 to 20 knots. Rain showers and slight chance of thunderstorms. Waves 1 to 2 feet building to 1 to 3 feet in the late evening and overnight. Note...Wave height forecasts are for ice free areas. $$ LSZ145-122200- Duluth MN to Port Wing WI- 124 PM CDT Sun Apr 12 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 1 AM CDT MONDAY... .REST OF TODAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots late. Patchy dense fog. Chance of showers and thunderstorms. Waves 1 foot or less. .TONIGHT...West wind 10 to 15 knots. Slight chance of showers and thunderstorms in the evening. Patchy dense fog through the night. Waves 1 foot or less. .MONDAY...West wind 5 knots becoming northeast in the afternoon. Patchy fog in the morning. Chance of rain showers in the afternoon. Waves 1 to 2 feet. .MONDAY NIGHT...Northeast wind 15 to 20 knots. Patchy fog in the evening. Rain showers and slight chance of thunderstorms through the night. Waves 1 to 2 feet building to 2 to 4 feet in the late evening and overnight. Note...Wave height forecasts are for ice free areas. $$ LSZ146-122200- Port Wing to Sand Island WI- 124 PM CDT Sun Apr 12 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT MONDAY... .REST OF TODAY...Northeast wind 5 to 10 knots. Patchy dense fog. Chance of showers and thunderstorms. Waves 1 foot or less. .TONIGHT...West wind 10 to 15 knots. Slight chance of showers and thunderstorms in the evening. Patchy dense fog through the night. Waves 1 to 2 feet. .MONDAY...Northwest wind 5 knots becoming northeast in the afternoon. Patchy dense fog in the morning. Slight chance of rain showers in the afternoon. Waves 1 foot or less. .MONDAY NIGHT...Northeast wind 15 to 20 knots. Rain showers and slight chance of thunderstorms. Waves 1 to 3 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ147-122200- Sand Island to Bayfield WI- 124 PM CDT Sun Apr 12 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT MONDAY... .REST OF TODAY...East wind 5 knots becoming south late. Patchy dense fog. Chance of showers and thunderstorms. Waves 1 foot or less. .TONIGHT...West wind 10 to 15 knots. Slight chance of showers and thunderstorms in the evening. Patchy dense fog through the night. Waves 1 to 2 feet. .MONDAY...Northwest wind 5 knots becoming northeast in the afternoon. Patchy dense fog in the morning. Slight chance of rain showers in the afternoon. Waves 1 foot or less. .MONDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots in the late evening and overnight. Patchy fog in the evening. Rain showers and slight chance of thunderstorms through the night. Waves 1 to 2 feet building to 1 to 3 feet after midnight. Note...Wave height forecasts are for ice free areas. $$ LSZ150-122200- Outer Apostle Islands Beyond 5 NM from Mainland- 124 PM CDT Sun Apr 12 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT MONDAY... .REST OF TODAY...Southeast wind 5 to 10 knots becoming south 10 to 15 knots late. Patchy dense fog. Chance of showers and thunderstorms. Waves 1 to 2 feet. .TONIGHT...West wind 10 to 15 knots. Slight chance of showers and thunderstorms in the evening. Patchy dense fog through the night. Waves 1 to 3 feet. .MONDAY...Northwest wind 5 to 10 knots becoming northeast in the afternoon. Patchy dense fog in the morning. Waves 1 foot or less. .MONDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots increasing to 25 knots after midnight, then decreasing to 20 knots early in the morning. Patchy fog in the evening. Rain showers in the evening. Slight chance of thunderstorms through the night. Chance of rain showers after midnight. Waves 1 to 3 feet building to 2 to 4 feet after midnight. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ148-122200- Oak Point to Saxon Harbor WI- 124 PM CDT Sun Apr 12 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 1 AM CDT MONDAY... .REST OF TODAY...South wind 10 to 15 knots with gusts to around 20 knots. Chance of showers and thunderstorms. Waves 1 to 2 feet. .TONIGHT...Southwest wind 10 to 15 knots with gusts to around 20 knots becoming west 5 to 10 knots after midnight. Slight chance of showers and thunderstorms in the evening. Patchy dense fog through the night. Waves 1 to 2 feet. .MONDAY...West wind 5 knots becoming northeast in the afternoon. Patchy fog in the morning. Slight chance of rain showers in the afternoon. Waves 1 foot or less. .MONDAY NIGHT...Northeast wind 10 to 15 knots. Patchy fog in the evening. Rain showers and slight chance of thunderstorms through the night. Waves 1 to 3 feet. Note...Wave height forecasts are for ice free areas. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH