FZUS53 KDLH 222145 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 445 PM CDT Wed Apr 22 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. LSZ140-230400- Grand Portage to Grand Marais MN- 445 PM CDT Wed Apr 22 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM CDT THIS EVENING THROUGH FRIDAY EVENING... .TONIGHT...Northeast wind 15 to 20 knots. Gusts up to 25 knots late in the night. Slight chance of rain and thunderstorms in the evening. Chance of rain and thunderstorms after midnight. Waves 1 to 3 feet building to 2 to 4 feet in the late evening and overnight. .THURSDAY...Northeast wind 15 to 20 knots with gusts to around 25 knots. Chance of rain and slight chance of thunderstorms in the afternoon. Waves 3 to 5 feet. Waves occasionally to 7 feet. .THURSDAY NIGHT...Northeast wind 15 to 20 knots with gusts to around 25 knots. Rain likely in the evening. Chance of thunderstorms through the night. Rain after midnight. Waves 4 to 6 feet. Waves occasionally to 8 feet. .FRIDAY...Northeast wind 15 to 20 knots with gusts to around 25 knots becoming north 10 to 15 knots with gusts to around 20 knots in the afternoon. Rain and slight chance of thunderstorms in the morning, then chance of rain in the afternoon. Waves 4 to 6 feet. Waves occasionally to 8 feet. $$ LSZ141-230400- Grand Marais to Taconite Harbor MN- 445 PM CDT Wed Apr 22 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM CDT THIS EVENING THROUGH FRIDAY EVENING... .TONIGHT...Northeast wind 15 to 20 knots. Gusts up to 25 knots late in the night. Chance of rain and slight chance of thunderstorms in the late evening and overnight. Waves 1 to 3 feet building to 2 to 4 feet in the late evening and overnight. .THURSDAY...Northeast wind 15 to 20 knots with gusts to around 25 knots. Rain likely and chance of thunderstorms in the afternoon. Waves 3 to 5 feet. Waves occasionally to 7 feet. .THURSDAY NIGHT...East wind 15 to 20 knots. Gusts up to 25 knots decreasing to 20 knots in the late evening and overnight. Rain and chance of thunderstorms. Waves 3 to 5 feet. Waves occasionally to 7 feet. .FRIDAY...Northeast wind 10 to 15 knots with gusts to around 20 knots becoming northwest 5 to 10 knots with gusts to around 20 knots in the late morning and afternoon. Rain likely and slight chance of thunderstorms in the morning, then chance of rain in the afternoon. Waves 3 to 5 feet. Waves occasionally to 7 feet. $$ LSZ142-230400- Taconite Harbor to Silver Bay Harbor MN- 445 PM CDT Wed Apr 22 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM CDT THIS EVENING THROUGH FRIDAY EVENING... .TONIGHT...Northeast wind 10 to 15 knots with gusts to around 20 knots. Slight chance of rain late in the evening. Slight chance of thunderstorms in the late evening and early morning. Chance of rain after midnight. Waves 1 to 2 feet building to 2 to 4 feet in the late evening and overnight. .THURSDAY...Northeast wind 15 to 20 knots. Gusts up to 25 knots early in the afternoon decreasing to 20 knots. Chance of rain and thunderstorms in the afternoon. Waves 3 to 5 feet. .THURSDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots early in the evening. Rain and chance of thunderstorms in the evening, then rain likely and slight chance of thunderstorms after midnight. Waves 3 to 5 feet. .FRIDAY...North wind 5 to 10 knots with gusts to around 20 knots becoming northwest in the late morning and afternoon. Slight chance of thunderstorms in the morning. Chance of rain through the day. Waves 2 to 4 feet. $$ LSZ143-230400- Silver Bay Harbor to Two Harbors MN- 445 PM CDT Wed Apr 22 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM CDT THIS EVENING THROUGH FRIDAY EVENING... .TONIGHT...Northeast wind 15 to 20 knots. Slight chance of rain until early morning. Slight chance of thunderstorms late in the evening. Waves 1 to 3 feet building to 2 to 4 feet in the late evening and overnight. .THURSDAY...Northeast wind 15 to 20 knots. Gusts up to 20 knots increasing to 25 knots early in the afternoon. Rain likely and chance of thunderstorms in the afternoon. Waves 2 to 4 feet. .THURSDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots early in the evening. Rain and chance of thunderstorms in the evening, then rain likely and slight chance of thunderstorms after midnight. Waves 2 to 4 feet. .FRIDAY...Northwest wind 5 to 10 knots becoming west in the afternoon. Chance of rain. Waves 1 to 3 feet. $$ LSZ144-230400- Two Harbors to Duluth MN- 445 PM CDT Wed Apr 22 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING... .TONIGHT...Northeast wind 15 to 20 knots. Partly cloudy early in the evening then becoming mostly cloudy. Waves 2 to 4 feet. .THURSDAY...Northeast wind 15 to 20 knots. Gusts up to 20 knots increasing to 25 knots early in the afternoon, then decreasing to 20 knots late in the afternoon. Rain and chance of thunderstorms in the afternoon. Waves 1 to 3 feet. .THURSDAY NIGHT...Northeast wind 10 to 15 knots with gusts to around 20 knots becoming north 5 to 10 knots early in the morning. Rain and chance of thunderstorms in the evening, then chance of rain and slight chance of thunderstorms after midnight. Waves 1 to 3 feet. .FRIDAY...West wind 10 to 15 knots. Chance of rain through the day. Waves 1 to 3 feet. $$ LSZ145-230400- Duluth MN to Port Wing WI- 445 PM CDT Wed Apr 22 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING... .TONIGHT...Northeast wind 15 to 20 knots. Partly cloudy early in the evening then becoming mostly cloudy. Waves 2 to 4 feet. .THURSDAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots in the late morning and afternoon. Chance of rain and thunderstorms in the afternoon. Waves 1 to 3 feet. .THURSDAY NIGHT...Northeast wind 10 to 15 knots with gusts to around 20 knots becoming north 5 to 10 knots early in the morning. Rain and chance of thunderstorms in the evening, then chance of rain and slight chance of thunderstorms after midnight. Waves 1 to 3 feet. .FRIDAY...West wind 10 to 15 knots. Chance of rain through the day. Waves 1 to 2 feet. $$ LSZ146-230400- Port Wing to Sand Island WI- 445 PM CDT Wed Apr 22 2026 .TONIGHT...Northeast wind 15 to 20 knots. Slight chance of thunderstorms late in the evening. Slight chance of rain in the late evening and early morning. Waves 1 to 3 feet. .THURSDAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots in the afternoon. Chance of rain and thunderstorms in the afternoon. Waves 1 to 3 feet. .THURSDAY NIGHT...Northeast wind 10 to 15 knots. Chance of rain and thunderstorms in the evening, then rain likely and slight chance of thunderstorms after midnight. Waves 1 to 3 feet. .FRIDAY...West wind 5 to 10 knots. Chance of rain. Waves 1 to 3 feet. $$ LSZ147-230400- Sand Island to Bayfield WI- 445 PM CDT Wed Apr 22 2026 .TONIGHT...East wind 5 to 10 knots becoming southeast late in the night. Slight chance of rain and thunderstorms in the late evening and early morning. Waves 1 to 3 feet. .THURSDAY...Southeast wind 5 to 10 knots. Chance of rain and thunderstorms in the afternoon. Waves 1 to 2 feet. .THURSDAY NIGHT...East wind 5 to 10 knots becoming northeast early in the morning. Rain and chance of thunderstorms. Waves 1 to 3 feet. .FRIDAY...Northwest wind 5 to 10 knots becoming west in the late morning and afternoon. Rain likely and slight chance of thunderstorms in the morning, then chance of rain in the afternoon. Waves 1 to 3 feet. $$ LSZ150-230400- Outer Apostle Islands Beyond 5 NM from Mainland- 445 PM CDT Wed Apr 22 2026 .TONIGHT...East wind 10 to 15 knots with gusts to around 20 knots becoming southeast late in the night. Slight chance of rain and thunderstorms in the late evening and early morning. Waves 1 to 3 feet building to 2 to 4 feet in the late evening and overnight. .THURSDAY...Southeast wind 10 to 15 knots. Gusts up to 20 knots in the afternoon. Chance of rain and thunderstorms in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet in the afternoon. .THURSDAY NIGHT...East wind 10 to 15 knots easing to 5 to 10 knots after midnight. Rain and chance of thunderstorms. Waves 2 to 4 feet. A small craft advisory may be needed. .FRIDAY...Northwest wind 5 to 10 knots becoming west in the late morning and afternoon. Slight chance of thunderstorms in the morning. Chance of rain through the day. Waves 2 to 4 feet subsiding to 1 to 3 feet late in the afternoon. $$ LSZ121-230400- Chequamegon Bay-Bayfield to Oak Point WI- 445 PM CDT Wed Apr 22 2026 .TONIGHT...Northeast wind 5 to 10 knots becoming south late in the night. Slight chance of rain late in the evening. Waves 1 foot or less. .THURSDAY...South wind 10 to 15 knots. Gusts up to 25 knots. Chance of rain and thunderstorms in the afternoon. Waves 1 foot or less. .THURSDAY NIGHT...South wind 5 to 10 knots. Gusts up to 20 knots early in the evening. Rain and chance of thunderstorms. Waves 1 foot or less. .FRIDAY...West wind 5 to 10 knots. Rain likely and slight chance of thunderstorms in the morning, then chance of rain in the afternoon. Waves 1 foot or less. $$ LSZ148-230400- Oak Point to Saxon Harbor WI- 445 PM CDT Wed Apr 22 2026 .TONIGHT...Northeast wind 5 to 10 knots becoming southeast 10 to 15 knots with gusts to around 20 knots after midnight. Slight chance of thunderstorms late in the evening. Slight chance of rain in the late evening and early morning. Waves 1 to 2 feet. .THURSDAY...South wind 10 to 15 knots with gusts to around 20 knots. Chance of rain and thunderstorms in the afternoon. Waves 1 to 2 feet. .THURSDAY NIGHT...Southeast wind 5 to 10 knots. Gusts up to 20 knots early in the evening. Chance of rain in the evening. Chance of thunderstorms through the night. Rain after midnight. Waves 1 to 2 feet. .FRIDAY...West wind 5 to 10 knots. Rain likely and slight chance of thunderstorms in the morning, then chance of rain in the afternoon. Waves 1 to 2 feet. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH