FZUS53 KDLH 172248 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 548 PM CDT Tue Mar 17 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. LSZ140-180400- Grand Portage to Grand Marais MN- 548 PM CDT Tue Mar 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM CDT THIS EVENING THROUGH WEDNESDAY AFTERNOON... .TONIGHT...Southwest wind 15 to 20 knots. Gusts up to 25 knots. Chance of snow through the night. Slight chance of very light freezing drizzle late in the night. Heavy freezing spray late in the night. Waves 1 to 3 feet building to 3 to 5 feet after midnight. .WEDNESDAY...Southwest wind 10 to 15 knots with gusts to around 25 knots. Slight chance of snow and very light freezing drizzle in the morning. Waves 3 to 5 feet. .WEDNESDAY NIGHT...Southwest wind 10 to 15 knots becoming north 5 to 10 knots early in the morning. Slight chance of rain and light freezing rain after midnight. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and overnight. .THURSDAY...Northeast wind 5 to 10 knots becoming southeast early in the afternoon, then becoming south late in the afternoon. Mostly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ141-180400- Grand Marais to Taconite Harbor MN- 548 PM CDT Tue Mar 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM CDT THIS EVENING THROUGH WEDNESDAY MORNING... .TONIGHT...South wind 15 to 20 knots. Gusts up to 25 knots. Snow in the evening, then chance of snow and slight chance of very light freezing drizzle after midnight. Waves 1 to 3 feet building to 2 to 4 feet after midnight. .WEDNESDAY...Southwest wind 10 to 15 knots with gusts to around 20 knots. Slight chance of very light freezing drizzle and snow in the morning. Waves 2 to 4 feet subsiding to 1 to 3 feet in the afternoon. .WEDNESDAY NIGHT...Southwest wind 5 to 10 knots becoming north early in the morning. Slight chance of rain through the night. Slight chance of light freezing rain after midnight. Waves 1 to 2 feet. .THURSDAY...North wind 5 knots becoming northeast late in the morning, then becoming south in the afternoon. Mostly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ142-180400- Taconite Harbor to Silver Bay Harbor MN- 548 PM CDT Tue Mar 17 2026 .TONIGHT...South wind 10 to 15 knots. Gusts up to 20 knots in the late evening and overnight. Snow likely in the evening, then chance of snow and slight chance of very light freezing drizzle after midnight. Waves 1 to 3 feet. .WEDNESDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots early in the morning then 20 knots early in the afternoon. Slight chance of very light freezing drizzle in the morning. Waves 1 to 2 feet. .WEDNESDAY NIGHT...Southwest wind 5 to 10 knots becoming north early in the morning. Slight chance of rain in the evening, then chance of rain and slight chance of light freezing rain after midnight. Waves 1 to 2 feet. .THURSDAY...North wind 5 knots becoming northeast late in the morning, then becoming south in the afternoon. Mostly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ143-180400- Silver Bay Harbor to Two Harbors MN- 548 PM CDT Tue Mar 17 2026 .TONIGHT...South wind 10 to 15 knots. Gusts up to 20 knots in the late evening and overnight. Snow in the evening, then chance of snow and slight chance of very light freezing drizzle after midnight. Waves 1 to 2 feet. .WEDNESDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots until late afternoon. Slight chance of very light freezing drizzle in the morning. Waves 1 to 2 feet. .WEDNESDAY NIGHT...Southwest wind 5 to 10 knots becoming north early in the morning. Chance of rain through the night. Slight chance of light freezing rain after midnight. Waves 1 to 2 feet. .THURSDAY...North wind 5 knots becoming south late in the afternoon. Mostly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ144-180400- Two Harbors to Duluth MN- 548 PM CDT Tue Mar 17 2026 .TONIGHT...South wind 10 to 15 knots. Gusts up to 20 knots in the late evening and overnight. Snow likely in the evening, then chance of snow after midnight. Slight chance of very light freezing drizzle and snow late in the night. Waves 1 to 2 feet. .WEDNESDAY...Southwest wind 10 to 15 knots easing to 5 to 10 knots in the afternoon. Slight chance of very light freezing drizzle in the morning. Waves 1 to 2 feet. .WEDNESDAY NIGHT...Southwest wind 5 to 10 knots becoming northwest early in the morning. Chance of rain. Waves 1 foot or less. .THURSDAY...Northeast wind 5 knots becoming south late in the afternoon. Mostly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ145-180400- Duluth MN to Port Wing WI- 548 PM CDT Tue Mar 17 2026 .TONIGHT...South wind 10 to 15 knots. Gusts up to 20 knots in the late evening and overnight. Chance of snow until early morning. Slight chance of very light freezing drizzle after midnight. Waves 1 to 2 feet. .WEDNESDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots until late afternoon. Slight chance of very light freezing drizzle in the morning. Slight chance of rain in the afternoon. Waves 1 to 2 feet. .WEDNESDAY NIGHT...Southwest wind 5 to 10 knots becoming northwest early in the morning. Chance of rain. Waves 1 foot or less. .THURSDAY...Northeast wind 5 knots becoming south late in the afternoon. Mostly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ146-180400- Port Wing to Sand Island WI- 548 PM CDT Tue Mar 17 2026 .TONIGHT...South wind 10 to 15 knots. Gusts up to 20 knots in the late evening and overnight. Snow likely in the evening, then chance of snow and slight chance of very light freezing drizzle after midnight. Waves 1 to 2 feet. .WEDNESDAY...Southwest wind 10 to 15 knots with gusts to around 20 knots. Slight chance of very light freezing drizzle in the morning. Waves 1 to 2 feet. .WEDNESDAY NIGHT...Southwest wind 5 to 10 knots becoming northwest early in the morning. Chance of rain. Waves 1 to 2 feet. .THURSDAY...Northeast wind 5 knots becoming southeast late in the afternoon. Mostly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ147-180400- Sand Island to Bayfield WI- 548 PM CDT Tue Mar 17 2026 .TONIGHT...South wind 10 to 15 knots. Gusts up to 20 knots in the late evening and overnight. Snow likely in the evening, then chance of snow and slight chance of very light freezing drizzle after midnight. Waves 1 foot or less. .WEDNESDAY...Southwest wind 10 to 15 knots with gusts to around 20 knots. Slight chance of very light freezing drizzle in the morning. Waves 1 to 2 feet. .WEDNESDAY NIGHT...Southwest wind 5 to 10 knots becoming northwest early in the morning. Chance of rain. Waves 1 to 2 feet. .THURSDAY...Northeast wind 5 knots becoming southeast late in the afternoon. Mostly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ150-180400- Outer Apostle Islands Beyond 5 NM from Mainland- 548 PM CDT Tue Mar 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM CDT THIS EVENING THROUGH WEDNESDAY MORNING... .TONIGHT...South wind 10 to 15 knots. Gusts up to 25 knots. Chance of snow until early morning. Slight chance of very light freezing drizzle after midnight. Waves 1 to 3 feet building to 2 to 4 feet after midnight. .WEDNESDAY...Southwest wind 10 to 15 knots with gusts to around 20 knots. Slight chance of very light freezing drizzle in the morning. Waves 1 to 3 feet. .WEDNESDAY NIGHT...Southwest wind 10 to 15 knots becoming northwest 5 to 10 knots early in the morning. Chance of rain through the night. Waves 1 to 2 feet. .THURSDAY...Northeast wind 5 to 10 knots becoming southeast late in the afternoon. Mostly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ148-180400- Oak Point to Saxon Harbor WI- 548 PM CDT Tue Mar 17 2026 .TONIGHT...South wind 10 to 15 knots. Gusts up to 20 knots in the late evening and overnight. Chance of snow in the evening. Slight chance of very light freezing drizzle after midnight. Waves 1 to 2 feet. .WEDNESDAY...Southwest wind 10 to 15 knots with gusts to around 20 knots easing to 5 to 10 knots in the afternoon. Slight chance of very light freezing drizzle in the morning. Waves 1 to 2 feet. .WEDNESDAY NIGHT...Southwest wind 5 to 10 knots becoming west early in the morning. Chance of rain through the night. Waves 1 foot or less. .THURSDAY...North wind 5 knots becoming northeast in the late morning and afternoon. Mostly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH