FZUS53 KDLH 132143 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 443 PM CDT Wed May 13 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. LSZ140-140400- Grand Portage to Grand Marais MN- 443 PM CDT Wed May 13 2026 .TONIGHT...West wind 5 to 10 knots becoming northeast in the late evening and overnight. Mostly clear. Waves 1 foot or less. .THURSDAY...East wind 10 to 15 knots with gusts to around 20 knots. Mostly sunny. Waves 1 to 2 feet. .THURSDAY NIGHT...East wind 10 to 15 knots with gusts to around 20 knots becoming south 15 to 20 knots with gusts to around 25 knots after midnight. Chance of rain showers in the evening, then rain showers likely after midnight. Waves 4 to 6 feet. Waves occasionally to 8 feet. A small craft advisory may be needed. .FRIDAY...Southwest wind 20 to 25 knots with gusts to around 30 knots. Mostly sunny. Waves 4 to 7 feet. Waves occasionally to 9 feet. A small craft advisory may be needed. $$ LSZ141-140400- Grand Marais to Taconite Harbor MN- 443 PM CDT Wed May 13 2026 .TONIGHT...West wind 5 to 10 knots becoming north in the late evening and early morning, then becoming northeast late in the night. Mostly clear. Waves 1 foot or less. .THURSDAY...East wind 10 to 15 knots. Gusts up to 20 knots late in the afternoon. Mostly sunny. Waves 1 to 2 feet. .THURSDAY NIGHT...East wind 10 to 15 knots with gusts to around 20 knots becoming southeast 5 to 10 knots after midnight. Chance of rain showers through the night. Waves 2 to 4 feet. .FRIDAY...Southwest wind 15 to 20 knots with gusts to around 25 knots. Mostly sunny. Waves 3 to 5 feet. A small craft advisory may be needed. $$ LSZ142-140400- Taconite Harbor to Silver Bay Harbor MN- 443 PM CDT Wed May 13 2026 .TONIGHT...North wind 5 knots. Mostly clear. Waves 1 foot or less. .THURSDAY...Northeast wind 10 to 15 knots. Mostly sunny. Waves 1 to 2 feet. .THURSDAY NIGHT...Northeast wind 10 to 15 knots becoming south 5 to 10 knots early in the morning. Chance of rain showers through the night. Waves 1 to 3 feet. .FRIDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots increasing to 25 knots in the afternoon. Sunny. Waves 1 to 3 feet. $$ LSZ143-140400- Silver Bay Harbor to Two Harbors MN- 443 PM CDT Wed May 13 2026 .TONIGHT...North wind 5 to 10 knots. Mostly clear. Waves 1 foot or less. .THURSDAY...Northeast wind 15 to 20 knots. Mostly sunny. Waves 1 to 3 feet. .THURSDAY NIGHT...Northeast wind 10 to 15 knots with gusts to around 20 knots becoming south early in the morning. Chance of rain showers through the night. Waves 1 to 2 feet building to 2 to 4 feet after midnight. .FRIDAY...Southwest wind 15 to 20 knots. Gusts up to 20 knots increasing to 25 knots in the afternoon. Sunny. Waves 2 to 4 feet. A small craft advisory may be needed. $$ LSZ144-140400- Two Harbors to Duluth MN- 443 PM CDT Wed May 13 2026 .TONIGHT...Northeast wind 5 to 10 knots. Mostly clear. Waves 1 foot or less. .THURSDAY...Northeast wind 15 to 20 knots. Sunny in the morning then becoming partly sunny. Waves 1 to 3 feet. .THURSDAY NIGHT...Northeast wind 10 to 15 knots with gusts to around 20 knots becoming south with gusts to around 20 knots after midnight. Chance of rain showers in the evening. Slight chance of rain showers after midnight. Waves 1 to 3 feet building to 2 to 4 feet after midnight. .FRIDAY...Southwest wind 20 to 25 knots. Gusts up to 30 knots late in the afternoon. Sunny. Waves 3 to 5 feet. A small craft advisory may be needed. $$ LSZ145-140400- Duluth MN to Port Wing WI- 443 PM CDT Wed May 13 2026 .TONIGHT...Northeast wind 5 to 10 knots. Mostly clear. Waves 1 foot or less. .THURSDAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots in the afternoon. Sunny in the morning then becoming partly sunny. Waves 1 to 2 feet building to 1 to 3 feet late in the afternoon. .THURSDAY NIGHT...Northeast wind 10 to 15 knots becoming south with gusts to around 25 knots after midnight. Chance of rain showers in the evening. Slight chance of rain showers after midnight. Waves 1 to 3 feet. .FRIDAY...Southwest wind 20 to 25 knots. Gusts up to 25 knots increasing to 30 knots in the afternoon. Sunny. Waves 1 to 3 feet building to 3 to 5 feet in the late morning and afternoon. A small craft advisory may be needed. $$ LSZ146-140400- Port Wing to Sand Island WI- 443 PM CDT Wed May 13 2026 .TONIGHT...Northeast wind 5 to 10 knots easing to 5 knots late in the night. Mostly clear. Waves 1 foot or less. .THURSDAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots late in the afternoon. Mostly sunny. Waves 1 to 2 feet. .THURSDAY NIGHT...East wind 10 knots becoming southeast with gusts to around 20 knots late in the evening, then becoming south with gusts to around 25 knots after midnight. Chance of rain showers. Waves 1 to 3 feet. .FRIDAY...Southwest wind 15 to 20 knots. Gusts up to 20 knots increasing to 25 knots in the afternoon. Sunny. Waves 1 to 3 feet building to 3 to 5 feet in the afternoon. A small craft advisory may be needed. $$ LSZ147-140400- Sand Island to Bayfield WI- 443 PM CDT Wed May 13 2026 .TONIGHT...Northeast wind 5 knots becoming north in the late evening and early morning, then becoming east late in the night. Clear. Waves 1 foot or less. .THURSDAY...East wind 10 to 15 knots. Gusts up to 20 knots late in the afternoon. Mostly sunny. Waves 1 to 2 feet. .THURSDAY NIGHT...Southeast wind 10 knots becoming south with gusts to around 25 knots in the late evening and overnight. Chance of rain showers through the night. Waves 1 to 2 feet. .FRIDAY...Southwest wind 10 to 15 knots with gusts to around 25 knots. Sunny. Waves 1 to 2 feet building to 1 to 3 feet late in the afternoon. $$ LSZ150-140400- Outer Apostle Islands Beyond 5 NM from Mainland- 443 PM CDT Wed May 13 2026 .TONIGHT...South wind 5 to 10 knots becoming east after midnight. Clear. Waves 1 foot or less. .THURSDAY...East wind 15 to 20 knots. Mostly sunny. Waves 1 to 2 feet. .THURSDAY NIGHT...South wind 10 to 15 knots with gusts to around 25 knots rising to 15 to 20 knots with gusts to around 25 knots early in the morning. Chance of rain showers through the night. Waves 1 to 2 feet building to 3 to 5 feet in the late evening and overnight. A small craft advisory may be needed. .FRIDAY...Southwest wind 15 to 20 knots. Gusts up to 25 knots early in the morning then 25 knots in the afternoon. Sunny. Waves 3 to 5 feet subsiding to 1 to 3 feet early in the afternoon, then building to 2 to 4 feet late in the afternoon. A small craft advisory may be needed. $$ LSZ121-140400- Chequamegon Bay-Bayfield to Oak Point WI- 443 PM CDT Wed May 13 2026 .TONIGHT...Southeast wind 5 knots. Mostly clear. Waves 1 foot or less. .THURSDAY...East wind 5 to 10 knots rising to 10 to 15 knots with gusts to around 20 knots in the afternoon. Sunny. Waves 1 to 2 feet. .THURSDAY NIGHT...South wind 10 knots with gusts to around 20 knots rising to 10 to 15 knots with gusts to around 25 knots in the late evening and overnight. Chance of rain showers through the night. Waves 1 to 2 feet. .FRIDAY...Southwest wind 15 to 20 knots. Gusts up to 25 knots. Sunny. Waves 1 to 2 feet. $$ LSZ148-140400- Oak Point to Saxon Harbor WI- 443 PM CDT Wed May 13 2026 .TONIGHT...Southeast wind 5 knots. Clear. Waves 1 foot or less. .THURSDAY...East wind 5 to 10 knots rising to 10 to 15 knots with gusts to around 20 knots in the afternoon. Sunny. Waves 1 to 2 feet. .THURSDAY NIGHT...South wind 15 to 20 knots with gusts to around 30 knots. Chance of rain showers through the night. Waves 1 to 3 feet. .FRIDAY...Southwest wind 15 to 20 knots with gusts to around 25 knots. Sunny. Waves 1 to 3 feet. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH