FZUS53 KDLH 181557 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 1057 AM CDT Sat Jul 18 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. LSZ140-182200- Grand Portage to Grand Marais MN- 1057 AM CDT Sat Jul 18 2026 .REST OF TODAY...West wind 5 to 10 knots becoming southwest in the afternoon. Smoke late in the morning, then areas of smoke early in the afternoon. Patchy smoke late. Waves 1 foot or less. .TONIGHT...Southwest wind 5 to 10 knots. Patchy smoke in the evening, then smoke after midnight. Waves 1 foot or less. .SUNDAY...Southwest wind 10 to 15 knots with gusts to around 20 knots. Smoke in the morning, then areas of smoke in the afternoon. Waves 1 to 2 feet. .SUNDAY NIGHT...Southwest wind 10 to 15 knots. Gusts up to 20 knots early in the morning. Patchy smoke in the evening. Slight chance of thunderstorms in the evening. Chance of rain showers through the night. Chance of thunderstorms after midnight. Waves 1 to 2 feet. $$ LSZ141-182200- Grand Marais to Taconite Harbor MN- 1057 AM CDT Sat Jul 18 2026 .REST OF TODAY...West wind 5 knots becoming southwest in the afternoon. Patchy smoke. Waves 1 foot or less. .TONIGHT...Southwest wind 5 knots early in the evening becoming variable 10 knots or less. Areas of smoke. Waves 1 foot or less. .SUNDAY...Variable winds 10 knots or less becoming south 5 knots in the late morning and afternoon. Areas of smoke through the day. Slight chance of rain showers in the afternoon. Waves 1 foot or less. .SUNDAY NIGHT...Southwest wind 5 knots early in the evening becoming variable 10 knots or less, then becoming west 5 knots after midnight. Patchy smoke in the evening. Chance of showers and thunderstorms through the night. Waves 1 foot or less. $$ LSZ142-182200- Taconite Harbor to Silver Bay Harbor MN- 1057 AM CDT Sat Jul 18 2026 .REST OF TODAY...Southwest wind 5 knots becoming south in the afternoon. Patchy smoke through the day. Waves 1 foot or less. .TONIGHT...Variable winds 10 knots or less. Areas of smoke. Waves 1 foot or less. .SUNDAY...Variable winds 10 knots or less becoming south 5 knots in the afternoon. Areas of smoke through the day. Slight chance of rain showers in the afternoon. Waves 1 foot or less. .SUNDAY NIGHT...Southwest wind 5 knots early in the evening becoming variable 10 knots or less, then becoming southwest 5 knots after midnight. Patchy smoke in the evening. Slight chance of rain showers in the evening. Slight chance of thunderstorms through the night. Chance of rain showers after midnight. Waves 1 foot or less. $$ LSZ143-182200- Silver Bay Harbor to Two Harbors MN- 1057 AM CDT Sat Jul 18 2026 .REST OF TODAY...South wind 5 knots in the late morning and early afternoon becoming variable 10 knots or less. Patchy smoke through the day. Waves 1 foot or less. .TONIGHT...Variable winds 10 knots or less. Areas of smoke. Waves 1 foot or less. .SUNDAY...Variable winds 10 knots or less becoming south 5 knots in the late morning and afternoon. Areas of smoke in the morning, then patchy smoke in the afternoon. Slight chance of rain showers in the afternoon. Waves 1 foot or less. .SUNDAY NIGHT...South wind 5 knots becoming southwest in the late evening and overnight. Slight chance of showers in the evening. Slight chance of thunderstorms through the night. Chance of showers after midnight. Waves 1 to 2 feet. $$ LSZ144-182200- Two Harbors to Duluth MN- 1057 AM CDT Sat Jul 18 2026 .REST OF TODAY...Southeast wind 5 knots becoming east late. Patchy smoke through the day. Waves 1 foot or less. .TONIGHT...Northeast wind 5 knots early in the evening becoming variable 10 knots or less, then becoming northeast 5 knots early in the morning. Areas of smoke. Waves 1 foot or less. .SUNDAY...Southwest wind 5 to 10 knots. Patchy smoke through the day. Slight chance of rain showers in the afternoon. Waves 1 foot or less. .SUNDAY NIGHT...Southwest wind 10 to 15 knots with gusts to around 20 knots. Chance of showers and slight chance of thunderstorms after midnight. Waves 1 to 2 feet. $$ LSZ145-182200- Duluth MN to Port Wing WI- 1057 AM CDT Sat Jul 18 2026 .REST OF TODAY...Southeast wind 5 to 10 knots becoming east in the afternoon. Patchy smoke in the afternoon. Waves 1 foot or less. .TONIGHT...Northeast wind 5 knots early in the evening becoming variable 10 knots or less, then becoming east 5 knots after midnight becoming southwest. Areas of smoke. Waves 1 foot or less. .SUNDAY...Southwest wind 5 knots. Patchy smoke through the day. Waves 1 foot or less. .SUNDAY NIGHT...Southwest wind 10 to 15 knots with gusts to around 20 knots. Chance of showers and slight chance of thunderstorms after midnight. Waves 1 to 2 feet. $$ LSZ146-182200- Port Wing to Sand Island WI- 1057 AM CDT Sat Jul 18 2026 .REST OF TODAY...South wind 5 to 10 knots becoming southeast early in the afternoon, then becoming variable 10 knots or less late. Patchy smoke in the late morning and early afternoon, then areas of smoke late. Waves 1 foot or less. .TONIGHT...Variable winds 10 knots or less. Areas of smoke. Waves 1 foot or less. .SUNDAY...Southwest wind 5 knots. Areas of smoke through the day. Waves 1 foot or less. .SUNDAY NIGHT...Southwest wind 5 to 10 knots. Chance of showers and slight chance of thunderstorms after midnight. Waves 1 to 2 feet. $$ LSZ147-182200- Sand Island to Bayfield WI- 1057 AM CDT Sat Jul 18 2026 .REST OF TODAY...Southwest wind 5 knots becoming southeast in the afternoon. Patchy smoke in the late morning and early afternoon, then areas of smoke late. Waves 1 foot or less. .TONIGHT...Southeast wind 5 knots becoming south after midnight. Smoke in the evening, then areas of smoke after midnight. Waves 1 foot or less. .SUNDAY...Southwest wind 5 knots. Areas of smoke. Waves 1 foot or less. .SUNDAY NIGHT...Southwest wind 5 to 10 knots. Patchy smoke in the evening. Slight chance of showers in the evening. Slight chance of thunderstorms through the night. Chance of showers after midnight. Waves 1 foot or less. $$ LSZ150-182200- Outer Apostle Islands Beyond 5 NM from Mainland- 1057 AM CDT Sat Jul 18 2026 .REST OF TODAY...West wind 5 knots becoming south in the afternoon. Patchy smoke in the late morning and early afternoon, then areas of smoke late. Waves 1 foot or less. .TONIGHT...Southeast wind 5 knots becoming south early in the morning. Smoke. Waves 1 foot or less. .SUNDAY...South wind 5 knots. Areas of smoke. Waves 1 foot or less. .SUNDAY NIGHT...Southwest wind 10 to 15 knots with gusts to around 20 knots. Patchy smoke in the evening. Slight chance of showers in the evening. Slight chance of thunderstorms through the night. Chance of showers after midnight. Waves 1 to 2 feet. $$ LSZ121-182200- Chequamegon Bay-Bayfield to Oak Point WI- 1057 AM CDT Sat Jul 18 2026 .REST OF TODAY...North wind 5 to 10 knots becoming east in the afternoon. Patchy smoke in the late morning and early afternoon, then areas of smoke late. Waves 1 foot or less. .TONIGHT...East wind 5 knots becoming south after midnight. Smoke. Waves 1 foot or less. .SUNDAY...Southwest wind 5 knots. Areas of smoke. Waves 1 foot or less. .SUNDAY NIGHT...Southwest wind 5 to 10 knots. Gusts up to 20 knots early in the morning. Chance of showers and slight chance of thunderstorms after midnight. Waves 1 foot or less. $$ LSZ148-182200- Oak Point to Saxon Harbor WI- 1057 AM CDT Sat Jul 18 2026 .REST OF TODAY...North wind 5 knots becoming east in the afternoon. Patchy smoke in the late morning and early afternoon, then areas of smoke late. Waves 1 foot or less. .TONIGHT...Southeast wind 5 knots becoming south after midnight. Smoke in the evening, then areas of smoke after midnight. Waves 1 foot or less. .SUNDAY...Southwest wind 5 knots. Areas of smoke. Waves 1 foot or less. .SUNDAY NIGHT...Southwest wind 5 to 10 knots. Gusts up to 20 knots after midnight. Patchy smoke in the evening. Chance of showers and slight chance of thunderstorms after midnight. Waves 1 to 2 feet. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH