FZUS53 KDLH 180707 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 207 AM CDT Wed Mar 18 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. LSZ140-181600- Grand Portage to Grand Marais MN- 207 AM CDT Wed Mar 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON... .TODAY...Southwest wind 10 to 15 knots. Gusts up to 25 knots decreasing to 20 knots late in the afternoon. Chance of snow in the morning. Slight chance of light freezing rain through the day. Slight chance of drizzle, light freezing drizzle and snow in the afternoon. Waves 3 to 5 feet. .TONIGHT...West wind 10 to 15 knots becoming northwest 5 knots after midnight, then becoming north early in the morning. Slight chance of very light freezing drizzle in the evening. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and overnight. .THURSDAY...Northeast wind 5 knots becoming south in the afternoon. Mostly sunny. Waves 1 foot or less. .THURSDAY NIGHT...South wind 5 to 10 knots becoming southeast after midnight. Chance of snow, rain and light freezing rain in the evening, then slight chance of rain, light freezing rain and snow after midnight. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ141-181600- Grand Marais to Taconite Harbor MN- 207 AM CDT Wed Mar 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM CDT THIS MORNING... .TODAY...Southwest wind 10 to 15 knots with gusts to around 20 knots. Chance of snow in the morning. Slight chance of light freezing rain and light freezing drizzle through the day. Waves 2 to 4 feet subsiding to 1 to 3 feet in the afternoon. .TONIGHT...West wind 5 to 10 knots becoming northwest after midnight. Slight chance of very light freezing drizzle in the evening. Waves 1 to 2 feet. .THURSDAY...North wind 5 knots becoming southeast late in the morning, then becoming south in the afternoon. Partly sunny. Waves 1 foot or less. .THURSDAY NIGHT...South wind 5 knots. Chance of snow and light freezing rain in the evening. Chance of rain through the night. Slight chance of light freezing rain after midnight. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ142-181600- Taconite Harbor to Silver Bay Harbor MN- 207 AM CDT Wed Mar 18 2026 .TODAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots until late afternoon. Slight chance of snow early in the morning. Slight chance of light freezing drizzle through the day. Slight chance of drizzle early in the afternoon. Waves 1 to 3 feet. .TONIGHT...Southwest wind 5 to 10 knots becoming northwest early in the morning. Slight chance of drizzle and very light freezing drizzle in the evening. Waves 1 to 2 feet. .THURSDAY...North wind 5 knots becoming southeast late in the morning, then becoming south in the afternoon. Partly sunny. Waves 1 foot or less. .THURSDAY NIGHT...South wind 5 knots becoming southwest early in the morning. Slight chance of rain. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ143-181600- Silver Bay Harbor to Two Harbors MN- 207 AM CDT Wed Mar 18 2026 .TODAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots until late afternoon. Slight chance of snow and light freezing rain early in the morning. Slight chance of light freezing drizzle until late afternoon. Slight chance of drizzle in the afternoon. Waves 1 to 2 feet. .TONIGHT...Southwest wind 5 to 10 knots becoming northwest early in the morning. Slight chance of drizzle through the night. Slight chance of rain after midnight. Waves 1 to 2 feet. .THURSDAY...North wind 5 knots becoming south in the afternoon. Partly sunny. Waves 1 foot or less. .THURSDAY NIGHT...Southwest wind 5 knots. Slight chance of rain in the evening. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ144-181600- Two Harbors to Duluth MN- 207 AM CDT Wed Mar 18 2026 .TODAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots until late afternoon. Slight chance of light freezing rain and snow early in the morning. Slight chance of very light freezing drizzle until late afternoon. Slight chance of drizzle in the afternoon. Waves 1 to 2 feet. .TONIGHT...Southwest wind 5 to 10 knots becoming northwest early in the morning. Chance of rain and slight chance of drizzle in the evening, then slight chance of rain after midnight. Waves 1 foot or less. .THURSDAY...North wind 5 knots becoming south in the afternoon. Partly sunny. Waves 1 foot or less. .THURSDAY NIGHT...Southwest wind 5 to 10 knots. Mostly cloudy. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ145-181600- Duluth MN to Port Wing WI- 207 AM CDT Wed Mar 18 2026 .TODAY...Southwest wind 10 to 15 knots with gusts to around 20 knots. Slight chance of light freezing rain and snow early in the morning. Slight chance of very light freezing drizzle until late afternoon. Slight chance of drizzle in the afternoon. Waves 1 to 2 feet. .TONIGHT...Southwest wind 5 to 10 knots becoming northwest early in the morning. Chance of drizzle in the evening. Chance of rain through the night. Waves 1 foot or less. .THURSDAY...North wind 5 knots becoming west early in the afternoon, then becoming south late in the afternoon. Partly sunny. Waves 1 foot or less. .THURSDAY NIGHT...Southwest wind 5 to 10 knots. Mostly cloudy. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ146-181600- Port Wing to Sand Island WI- 207 AM CDT Wed Mar 18 2026 .TODAY...Southwest wind 10 to 15 knots with gusts to around 20 knots. Slight chance of snow early in the morning. Slight chance of light freezing drizzle until late afternoon. Slight chance of drizzle in the afternoon. Waves 1 to 3 feet. .TONIGHT...Southwest wind 5 to 10 knots becoming northwest early in the morning. Slight chance of drizzle in the evening. Slight chance of rain through the night. Waves 1 to 2 feet. .THURSDAY...North wind 5 knots becoming southwest in the afternoon. Partly sunny. Waves 1 foot or less. .THURSDAY NIGHT...Southwest wind 5 knots. Slight chance of rain. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ147-181600- Sand Island to Bayfield WI- 207 AM CDT Wed Mar 18 2026 .TODAY...Southwest wind 10 to 15 knots with gusts to around 20 knots. Slight chance of snow early in the morning. Slight chance of light freezing drizzle until late afternoon. Waves 1 to 2 feet. .TONIGHT...West wind 5 to 10 knots becoming northwest early in the morning. Slight chance of rain through the night. Waves 1 to 2 feet. .THURSDAY...North wind 5 knots becoming northeast late in the morning, then becoming south in the afternoon. Partly sunny. Waves 1 foot or less. .THURSDAY NIGHT...South wind 5 knots becoming southwest after midnight. Slight chance of rain. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ150-181600- Outer Apostle Islands Beyond 5 NM from Mainland- 207 AM CDT Wed Mar 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM CDT THIS MORNING... .TODAY...Southwest wind 10 to 15 knots. Gusts up to 25 knots decreasing to 20 knots in the late morning and afternoon. Slight chance of snow early in the morning. Slight chance of very light freezing drizzle through the day. Waves 1 to 3 feet. .TONIGHT...West wind 10 to 15 knots becoming northwest 5 knots early in the morning. Slight chance of rain and snow in the evening. Waves 1 to 2 feet. .THURSDAY...North wind 5 to 10 knots becoming northeast late in the morning, then becoming southeast in the afternoon. Partly sunny. Waves 1 foot or less. .THURSDAY NIGHT...South wind 5 to 10 knots becoming southwest early in the morning. Slight chance of rain. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ148-181600- Oak Point to Saxon Harbor WI- 207 AM CDT Wed Mar 18 2026 .TODAY...Southwest wind 10 to 15 knots. Gusts up to 25 knots. Slight chance of snow early in the morning. Slight chance of very light freezing drizzle until late afternoon. Slight chance of drizzle in the afternoon. Waves 1 to 2 feet. .TONIGHT...Southwest wind 5 to 10 knots becoming west early in the morning. Chance of rain and slight chance of drizzle in the evening, then slight chance of rain after midnight. Waves 1 foot or less. .THURSDAY...North wind 5 knots becoming northeast late in the morning, then becoming south in the afternoon. Partly sunny. Waves 1 foot or less. .THURSDAY NIGHT...South wind 5 to 10 knots becoming southwest early in the morning. Slight chance of rain. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH