FZUS53 KDLH 102123 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 423 PM CDT Sun May 10 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. LSZ140-110400- Grand Portage to Grand Marais MN- 423 PM CDT Sun May 10 2026 .TONIGHT...Northwest wind 5 knots. Mostly cloudy early in the evening then clearing. Waves 1 foot or less. .MONDAY...Northwest wind 5 knots becoming south in the late morning and afternoon. Sunny. Waves 1 foot or less. .MONDAY NIGHT...Southeast wind 5 to 10 knots becoming east in the late evening and overnight. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 to 3 feet. .TUESDAY...East wind 10 to 15 knots with gusts to around 20 knots becoming north 5 to 10 knots late in the afternoon. Rain showers. Waves 2 to 4 feet. A small craft advisory may be needed. $$ LSZ141-110400- Grand Marais to Taconite Harbor MN- 423 PM CDT Sun May 10 2026 .TONIGHT...North wind 5 knots. Mostly cloudy early in the evening then clearing. Waves 1 foot or less. .MONDAY...North wind 5 knots becoming south in the late morning and afternoon. Sunny. Waves 1 foot or less. .MONDAY NIGHT...East wind 5 to 10 knots. Slight chance of rain showers after midnight. Waves 1 to 2 feet. .TUESDAY...East wind 5 to 10 knots becoming northwest late in the afternoon. Rain showers in the morning, then rain showers likely in the afternoon. Waves 1 to 3 feet. $$ LSZ142-110400- Taconite Harbor to Silver Bay Harbor MN- 423 PM CDT Sun May 10 2026 .TONIGHT...North wind 5 knots. Partly cloudy. Waves 1 foot or less. .MONDAY...Variable winds 10 knots or less becoming southeast 5 knots in the late morning and afternoon. Sunny. Waves 1 foot or less. .MONDAY NIGHT...Northeast wind 5 to 10 knots. Rain showers after midnight. Waves 1 to 2 feet. .TUESDAY...East wind 5 to 10 knots becoming northwest in the afternoon. Rain showers in the morning, then rain showers likely in the afternoon. Waves 1 to 2 feet. $$ LSZ143-110400- Silver Bay Harbor to Two Harbors MN- 423 PM CDT Sun May 10 2026 .TONIGHT...North wind 5 knots. Mostly clear. Waves 1 foot or less. .MONDAY...Variable winds 10 knots or less becoming east 5 knots late in the morning, then rising to 5 to 10 knots in the afternoon. Sunny. Waves 1 foot or less. .MONDAY NIGHT...Northeast wind 5 to 10 knots. Rain showers and slight chance of thunderstorms after midnight. Waves 1 foot or less. .TUESDAY...Northeast wind 5 knots becoming northwest in the afternoon. Rain showers and slight chance of thunderstorms in the morning, then chance of rain showers in the afternoon. Waves 1 foot or less. $$ LSZ144-110400- Two Harbors to Duluth MN- 423 PM CDT Sun May 10 2026 .TONIGHT...North wind 5 to 10 knots. Mostly clear. Waves 1 foot or less. .MONDAY...Variable winds 10 knots or less becoming east 5 to 10 knots in the late morning and afternoon. Sunny. Waves 1 foot or less. .MONDAY NIGHT...Northeast wind 5 to 10 knots. Rain showers and slight chance of thunderstorms after midnight. Waves 1 foot or less. .TUESDAY...Northeast wind 5 to 10 knots becoming northwest 10 to 15 knots with gusts to around 25 knots in the afternoon. Rain showers and slight chance of thunderstorms in the morning, then chance of rain showers in the afternoon. Waves 1 to 2 feet. $$ LSZ145-110400- Duluth MN to Port Wing WI- 423 PM CDT Sun May 10 2026 .TONIGHT...Northeast wind 5 to 10 knots. Partly cloudy until early morning then becoming clear. Waves 1 foot or less. .MONDAY...Variable winds 10 knots or less becoming northeast 5 to 10 knots in the late morning and afternoon. Sunny. Waves 1 foot or less. .MONDAY NIGHT...East wind 5 to 10 knots. Rain showers and slight chance of thunderstorms after midnight. Waves 1 foot or less. .TUESDAY...East wind 5 to 10 knots becoming northwest 15 to 20 knots with gusts to around 25 knots in the late morning and afternoon. Rain showers and slight chance of thunderstorms in the morning, then chance of rain showers in the afternoon. Waves 1 to 3 feet. $$ LSZ146-110400- Port Wing to Sand Island WI- 423 PM CDT Sun May 10 2026 .TONIGHT...North wind 5 knots. Mostly clear. Waves 1 foot or less. .MONDAY...Variable winds 10 knots or less becoming north 5 knots late in the morning, then becoming east in the afternoon. Sunny. Waves 1 foot or less. .MONDAY NIGHT...East wind 5 to 10 knots. Rain showers and slight chance of thunderstorms after midnight. Waves 1 foot or less. .TUESDAY...Southeast wind 5 knots becoming south late in the morning, then becoming west in the afternoon. Rain showers and slight chance of thunderstorms in the morning, then chance of rain showers in the afternoon. Waves 1 to 2 feet. $$ LSZ147-110400- Sand Island to Bayfield WI- 423 PM CDT Sun May 10 2026 .TONIGHT...North wind 5 knots. Mostly clear. Waves 1 foot or less. .MONDAY...Variable winds 10 knots or less becoming north 5 knots late in the morning, then becoming east in the afternoon. Sunny. Waves 1 foot or less. .MONDAY NIGHT...Southeast wind 5 to 10 knots. Slight chance of showers and thunderstorms after midnight. Waves 1 foot or less. .TUESDAY...Southeast wind 5 to 10 knots becoming west in the afternoon. Slight chance of thunderstorms in the morning. Rain showers likely through the day. Waves 1 foot or less. $$ LSZ150-110400- Outer Apostle Islands Beyond 5 NM from Mainland- 423 PM CDT Sun May 10 2026 .TONIGHT...Northwest wind 5 knots becoming north in the late evening and overnight. Mostly clear. Waves 1 foot or less. .MONDAY...Northeast wind 5 knots becoming east in the afternoon. Sunny. Waves 1 foot or less. .MONDAY NIGHT...East wind 10 knots becoming southeast in the late evening and overnight. Rain showers likely after midnight. Waves 1 to 2 feet. .TUESDAY...Southeast wind 10 to 15 knots becoming west 5 to 10 knots in the afternoon. Rain showers likely. Waves 1 to 2 feet. $$ LSZ121-110400- Chequamegon Bay-Bayfield to Oak Point WI- 423 PM CDT Sun May 10 2026 .TONIGHT...North wind 5 knots. Mostly clear. Waves 1 foot or less. .MONDAY...Variable winds 10 knots or less becoming north 5 knots late in the morning, then becoming east in the afternoon. Sunny. Waves 1 foot or less. .MONDAY NIGHT...East wind 5 to 10 knots becoming south after midnight. Rain showers and slight chance of thunderstorms after midnight. Waves 1 foot or less. .TUESDAY...South wind 5 to 10 knots with gusts to around 20 knots becoming west 10 to 15 knots with gusts to around 20 knots in the afternoon. Rain showers and slight chance of thunderstorms in the morning, then rain showers likely in the afternoon. Waves 1 foot or less. $$ LSZ148-110400- Oak Point to Saxon Harbor WI- 423 PM CDT Sun May 10 2026 .TONIGHT...North wind 5 knots. Mostly clear. Waves 1 foot or less. .MONDAY...Northwest wind 5 knots becoming northeast in the late morning and afternoon. Sunny. Waves 1 foot or less. .MONDAY NIGHT...East wind 5 to 10 knots becoming south 10 to 15 knots with gusts to around 20 knots early in the morning. Rain showers likely after midnight. Waves 1 to 2 feet. .TUESDAY...South wind 10 to 15 knots becoming west in the afternoon. Gusts up to 20 knots. Rain showers likely. Waves 1 to 2 feet. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH