FZUS53 KDLH 211632 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 1132 AM CDT Wed May 21 2025 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. LSZ140-141-212215- Grand Portage to Grand Marais MN- Grand Marais to Taconite Harbor MN- 1132 AM CDT Wed May 21 2025 .REST OF TODAY...Northeast wind 10 to 15 knots with gusts to around 20 knots. Partly sunny. Waves 2 to 4 feet. .TONIGHT...North wind 10 to 15 knots. Gusts up to 20 knots early in the morning. Mostly cloudy in the evening then clearing. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and overnight. .THURSDAY...North wind 10 to 15 knots with gusts to around 20 knots becoming northeast in the afternoon. Sunny in the morning then becoming partly sunny. Waves 1 to 2 feet. .THURSDAY NIGHT...North wind 5 to 10 knots. Mostly cloudy. Waves 1 to 2 feet. $$ LSZ143-212215- Silver Bay Harbor to Two Harbors MN- 1132 AM CDT Wed May 21 2025 ...GALE WARNING IN EFFECT UNTIL 1 PM CDT THIS AFTERNOON... .REST OF TODAY...Northeast wind 20 to 25 knots with gusts to around 30 knots. Mostly cloudy. Waves 5 to 8 feet. Waves occasionally to 10 feet. .TONIGHT...Northeast wind 10 to 15 knots with gusts to around 25 knots becoming north 5 to 10 knots after midnight. Mostly cloudy in the evening then becoming partly cloudy. Waves 4 to 6 feet subsiding to 1 to 3 feet after midnight. Waves occasionally to 7 feet. A small craft advisory may be needed. .THURSDAY...North wind 5 to 10 knots becoming east in the afternoon. Mostly sunny. Waves 1 to 2 feet. .THURSDAY NIGHT...Northeast wind 5 knots becoming north after midnight. Partly cloudy. Waves 1 foot or less. $$ LSZ142-212215- Taconite Harbor to Silver Bay Harbor MN- 1132 AM CDT Wed May 21 2025 .REST OF TODAY...Northeast wind 15 to 20 knots. Gusts up to 30 knots decreasing to 25 knots late. Mostly cloudy. Waves 5 to 8 feet. Waves occasionally to 10 feet. .TONIGHT...North wind 5 to 10 knots. Gusts up to 20 knots early in the evening. Mostly cloudy in the evening then clearing. Waves 3 to 5 feet subsiding to 1 to 3 feet after midnight. Waves occasionally to 7 feet. A small craft advisory may be needed. .THURSDAY...North wind 5 knots becoming east in the afternoon. Mostly sunny. Waves 1 foot or less. .THURSDAY NIGHT...Northeast wind 5 knots early in the evening becoming variable 10 knots or less, then becoming north 5 knots after midnight. Partly cloudy. Waves 1 foot or less. $$ LSZ144-212215- Two Harbors to Duluth MN- 1132 AM CDT Wed May 21 2025 ...GALE WARNING IN EFFECT UNTIL 1 PM CDT THIS AFTERNOON... .REST OF TODAY...Northeast wind 20 to 25 knots with gusts to around 30 knots. Slight chance of rain showers late in the morning. Waves 5 to 8 feet. Waves occasionally to 10 feet. .TONIGHT...Northeast wind 15 to 20 knots with gusts to around 25 knots becoming north 5 to 10 knots in the late evening and overnight. Mostly cloudy in the evening then becoming partly cloudy. Waves 4 to 6 feet subsiding to 1 to 3 feet after midnight. Waves occasionally to 8 feet. A small craft advisory may be needed. .THURSDAY...North wind 5 to 10 knots becoming northeast in the afternoon. Sunny. Waves 1 to 2 feet. .THURSDAY NIGHT...Northeast wind 5 to 10 knots becoming north after midnight. Partly cloudy. Waves 1 foot or less. $$ LSZ145-212215- Duluth MN to Port Wing WI- 1132 AM CDT Wed May 21 2025 ...GALE WARNING IN EFFECT UNTIL 1 PM CDT THIS AFTERNOON... .REST OF TODAY...Northeast wind 20 to 25 knots with gusts to around 30 knots. Slight chance of rain showers late in the morning. Waves 5 to 8 feet. Waves occasionally to 10 feet. .TONIGHT...Northeast wind 15 to 20 knots with gusts to around 25 knots easing to 5 to 10 knots in the late evening and overnight. Mostly cloudy in the evening then becoming partly cloudy. Waves 4 to 6 feet subsiding to 1 to 3 feet after midnight. Waves occasionally to 8 feet. A small craft advisory may be needed. .THURSDAY...Northeast wind 5 to 10 knots. Sunny. Waves 1 to 2 feet. .THURSDAY NIGHT...Northeast wind 5 to 10 knots becoming north early in the morning. Partly cloudy. Waves 1 foot or less. $$ LSZ146-212215- Port Wing to Sand Island WI- 1132 AM CDT Wed May 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM CDT THIS EVENING... .REST OF TODAY...Northeast wind 20 to 25 knots with gusts to around 30 knots. Mostly cloudy. Waves 5 to 8 feet. Waves occasionally to 10 feet. .TONIGHT...Northeast wind 10 to 15 knots with gusts to around 20 knots easing to 5 to 10 knots after midnight. Mostly cloudy in the evening then becoming partly cloudy. Waves 3 to 5 feet subsiding to 1 to 3 feet after midnight. Waves occasionally to 7 feet. .THURSDAY...Northeast wind 5 to 10 knots easing to 5 knots late in the afternoon. Sunny. Waves 1 to 2 feet. .THURSDAY NIGHT...Northeast wind 5 knots becoming north after midnight. Partly cloudy. Waves 1 foot or less. $$ LSZ147-212215- Sand Island to Bayfield WI- 1132 AM CDT Wed May 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM CDT THIS EVENING... .REST OF TODAY...Northeast wind 20 to 25 knots with gusts to around 30 knots. Mostly cloudy. Waves 5 to 8 feet. Waves occasionally to 10 feet. .TONIGHT...Northeast wind 10 to 15 knots with gusts to around 20 knots easing to 5 to 10 knots after midnight. Mostly cloudy in the evening then clearing. Waves 3 to 5 feet subsiding to 1 to 2 feet after midnight. Waves occasionally to 7 feet. .THURSDAY...North wind 5 to 10 knots becoming east in the afternoon. Mostly sunny. Waves 1 to 2 feet. .THURSDAY NIGHT...East wind 5 knots becoming north after midnight. Partly cloudy. Waves 1 foot or less. $$ LSZ150-212215- Outer Apostle Islands Beyond 5 NM from Mainland- 1132 AM CDT Wed May 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM CDT THIS EVENING... .REST OF TODAY...Northeast wind 20 to 25 knots with gusts to around 30 knots. Mostly cloudy. Waves 6 to 9 feet. Waves occasionally to 11 feet. .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 25 knots early in the evening then 20 knots early in the morning. Mostly cloudy in the evening then clearing. Waves 4 to 6 feet subsiding to 1 to 2 feet. Waves occasionally to 8 feet. .THURSDAY...North wind 5 to 10 knots becoming east in the afternoon. Mostly sunny. Waves 1 to 2 feet. .THURSDAY NIGHT...Northeast wind 5 knots becoming north after midnight. Partly cloudy. Waves 1 to 2 feet. $$ LSZ121-212215- Chequamegon Bay-Bayfield to Oak Point WI- 1132 AM CDT Wed May 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM CDT THIS EVENING... .REST OF TODAY...Northeast wind 15 to 20 knots with gusts to around 25 knots. Mostly cloudy. Waves 1 to 3 feet. .TONIGHT...Northeast wind 10 to 15 knots with gusts to around 20 knots becoming north 5 to 10 knots after midnight. Mostly cloudy in the evening then becoming partly cloudy. Waves 1 to 2 feet. .THURSDAY...Northeast wind 5 to 10 knots. Mostly sunny. Waves 1 foot or less. .THURSDAY NIGHT...Northeast wind 5 knots becoming north after midnight. Partly cloudy. Waves 1 foot or less. $$ LSZ148-212215- Oak Point to Saxon Harbor WI- 1132 AM CDT Wed May 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM CDT THIS EVENING... .REST OF TODAY...Northeast wind 10 to 15 knots with gusts to around 25 knots rising to 20 to 25 knots with gusts to around 30 knots in the afternoon. Mostly cloudy. Waves 5 to 8 feet. Waves occasionally to 11 feet. .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 25 knots early in the evening. Mostly cloudy in the evening then becoming partly cloudy. Waves 4 to 7 feet subsiding to 1 to 3 feet. Waves occasionally to 9 feet. .THURSDAY...Northeast wind 5 to 10 knots. Mostly sunny. Waves 1 to 2 feet. .THURSDAY NIGHT...Northeast wind 5 knots becoming north after midnight. Partly cloudy. Waves 1 to 2 feet. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes BJH