FZUS53 KDLH 172258 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 558 PM CDT Wed Jun 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- 558 PM CDT Wed Jun 17 2026 .TONIGHT...Northeast wind 10 to 15 knots becoming northwest 5 knots late in the night. Mostly cloudy. Waves 1 to 2 feet. .THURSDAY...West wind 5 to 10 knots. Slight chance of rain showers in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Waves 1 foot or less. .THURSDAY NIGHT...Northwest wind 5 to 10 knots. Slight chance of rain showers in the evening. Waves 1 foot or less. .FRIDAY...West wind 5 to 10 knots becoming southwest 10 to 15 knots with gusts to around 20 knots in the afternoon. Mostly sunny. Waves 1 to 2 feet. $$ LSZ141-180400- Grand Marais to Taconite Harbor MN- 558 PM CDT Wed Jun 17 2026 .TONIGHT...Northeast wind 5 to 10 knots becoming northwest after midnight. Slight chance of rain showers early in the evening. Waves 1 foot or less. .THURSDAY...West wind 5 to 10 knots. Slight chance of rain showers in the morning, then chance of rain showers in the afternoon. Waves 1 foot or less. .THURSDAY NIGHT...Northwest wind 5 to 10 knots. Partly cloudy. Waves 1 foot or less. .FRIDAY...West wind 5 knots becoming southwest in the afternoon. Sunny in the morning then becoming partly sunny. Waves 1 foot or less. $$ LSZ142-180400- Taconite Harbor to Silver Bay Harbor MN- 558 PM CDT Wed Jun 17 2026 .TONIGHT...Northeast wind 10 to 15 knots becoming north 5 knots after midnight, then becoming west late in the night. Slight chance of rain showers in the evening. Patchy fog in the late evening and overnight. Waves 1 foot or less. .THURSDAY...West wind 5 to 10 knots. Slight chance of rain showers through the day. Waves 1 foot or less. .THURSDAY NIGHT...Northwest wind 5 to 10 knots. Mostly clear. Waves 1 foot or less. .FRIDAY...West wind 5 knots becoming southwest in the afternoon. Slight chance of rain showers in the afternoon. Waves 1 foot or less. $$ LSZ143-180400- Silver Bay Harbor to Two Harbors MN- 558 PM CDT Wed Jun 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING... .TONIGHT...Northeast wind 10 to 15 knots with gusts to around 20 knots becoming northwest 5 knots after midnight, then becoming west late in the night. Chance of rain showers early in the evening, then slight chance of rain showers late in the evening. Patchy fog in the late evening and overnight. Waves 1 to 2 feet. .THURSDAY...West wind 5 to 10 knots. Slight chance of rain showers in the afternoon. Waves 1 foot or less. .THURSDAY NIGHT...West wind 5 knots. Mostly clear. Waves 1 foot or less. .FRIDAY...West wind 5 knots becoming southwest in the afternoon. Slight chance of rain showers in the afternoon. Waves 1 foot or less. $$ LSZ144-180400- Two Harbors to Duluth MN- 558 PM CDT Wed Jun 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM CDT THURSDAY... .TONIGHT...Northeast wind 15 to 20 knots becoming west 5 knots after midnight. Chance of rain showers early in the evening, then slight chance of rain showers late in the evening. Patchy fog in the late evening and overnight. Waves 1 to 3 feet. .THURSDAY...West wind 5 to 10 knots. Gusts up to 20 knots late in the afternoon. Slight chance of rain showers in the afternoon. Waves 1 foot or less. .THURSDAY NIGHT...West wind 5 to 10 knots. Mostly clear. Waves 1 foot or less. .FRIDAY...Southwest wind 5 knots. Chance of rain showers in the afternoon. Waves 1 foot or less. $$ LSZ145-180400- Duluth MN to Port Wing WI- 558 PM CDT Wed Jun 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM CDT THURSDAY... .TONIGHT...Northeast wind 15 to 20 knots with gusts to around 25 knots becoming northwest 5 knots after midnight, then becoming west late in the night. Chance of rain showers early in the evening, then slight chance of rain showers late in the evening. Patchy fog late in the evening. Areas of fog after midnight, then patchy fog late in the night. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and overnight. .THURSDAY...West wind 10 to 15 knots. Gusts up to 20 knots in the afternoon. Mostly sunny. Waves 1 foot or less. .THURSDAY NIGHT...West wind 5 to 10 knots. Partly cloudy. Waves 1 foot or less. .FRIDAY...Southwest wind 5 knots. Chance of rain showers in the afternoon. Waves 1 foot or less. $$ LSZ146-180400- Port Wing to Sand Island WI- 558 PM CDT Wed Jun 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING... .TONIGHT...Northeast wind 10 to 15 knots with gusts to around 20 knots becoming north 5 knots after midnight, then becoming west late in the night. Chance of rain showers early in the evening, then slight chance of rain showers late in the evening. Patchy fog in the late evening and overnight. Waves 1 to 2 feet. .THURSDAY...West wind 5 to 10 knots. Mostly sunny. Waves 1 foot or less. .THURSDAY NIGHT...West wind 5 to 10 knots. Partly cloudy. Waves 1 foot or less. .FRIDAY...Southwest wind 5 knots. Slight chance of rain showers in the afternoon. Waves 1 foot or less. $$ LSZ147-180400- Sand Island to Bayfield WI- 558 PM CDT Wed Jun 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING... .TONIGHT...Northeast wind 5 to 10 knots becoming west late in the night. Chance of rain showers early in the evening, then slight chance of rain showers late in the evening. Patchy fog in the late evening and overnight. Waves 1 foot or less. .THURSDAY...West wind 5 to 10 knots. Mostly sunny. Waves 1 foot or less. .THURSDAY NIGHT...West wind 5 knots. Partly cloudy. Waves 1 foot or less. .FRIDAY...West wind 5 knots. Mostly sunny. Waves 1 foot or less. $$ LSZ150-180400- Outer Apostle Islands Beyond 5 NM from Mainland- 558 PM CDT Wed Jun 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING... .TONIGHT...Northeast wind 10 to 15 knots with gusts to around 20 knots becoming north 5 to 10 knots after midnight, then becoming west late in the night. Chance of rain showers early in the evening. Patchy fog after midnight. Waves 1 to 2 feet. .THURSDAY...West wind 5 to 10 knots. Mostly sunny. Waves 1 to 2 feet. .THURSDAY NIGHT...West wind 5 to 10 knots. Partly cloudy. Waves 1 to 2 feet. .FRIDAY...West wind 5 knots becoming southwest late in the afternoon. Mostly sunny. Waves 1 foot or less. $$ LSZ121-180400- Chequamegon Bay-Bayfield to Oak Point WI- 558 PM CDT Wed Jun 17 2026 .TONIGHT...Northeast wind 10 to 15 knots with gusts to around 20 knots becoming north 5 knots after midnight, then becoming west late in the night. Chance of rain showers early in the evening, then slight chance of rain showers late in the evening. Patchy fog in the late evening and overnight. Waves 1 foot or less. .THURSDAY...West wind 5 to 10 knots. Slight chance of rain showers in the afternoon. Waves 1 foot or less. .THURSDAY NIGHT...West wind 5 to 10 knots. Partly cloudy. Waves 1 foot or less. .FRIDAY...West wind 5 knots. Slight chance of rain showers in the afternoon. Waves 1 foot or less. $$ LSZ148-180400- Oak Point to Saxon Harbor WI- 558 PM CDT Wed Jun 17 2026 .TONIGHT...Northeast wind 10 to 15 knots with gusts to around 20 knots becoming north 5 knots after midnight, then becoming west late in the night. Chance of rain showers early in the evening, then slight chance of rain showers late in the evening. Patchy fog in the late evening and overnight. Waves 1 to 3 feet subsiding to 1 foot or less after midnight. .THURSDAY...West wind 5 to 10 knots. Slight chance of rain showers in the afternoon. Waves 1 foot or less. .THURSDAY NIGHT...West wind 5 to 10 knots. Partly cloudy. Waves 1 foot or less. .FRIDAY...West wind 5 knots. Slight chance of rain showers in the afternoon. Waves 1 foot or less. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH