FZUS53 KDLH 191109 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 608 AM CDT Sun Jul 19 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. LSZ140-191600- Grand Portage to Grand Marais MN- 608 AM CDT Sun Jul 19 2026 .TODAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots in the afternoon. Areas of smoke until late afternoon, then patchy smoke late in the afternoon. Slight chance of showers and thunderstorms late in the afternoon. Waves 1 to 2 feet. .TONIGHT...Southwest wind 5 to 10 knots rising to 10 to 15 knots with gusts to around 20 knots after midnight. Chance of showers and thunderstorms. Waves 1 to 2 feet. .MONDAY...Southwest wind 15 to 20 knots. Gusts up to 25 knots increasing to 30 knots in the late morning and early afternoon, then decreasing to 25 knots late in the afternoon. Chance of rain showers and slight chance of thunderstorms in the morning, then rain showers likely and chance of thunderstorms in the afternoon. Waves 4 to 6 feet. Waves occasionally to 7 feet. A small craft advisory may be needed. .MONDAY NIGHT...West wind 10 to 15 knots with gusts to around 20 knots becoming northwest with gusts to around 25 knots early in the morning. Chance of thunderstorms in the evening. Chance of rain showers through the night. Waves 2 to 4 feet subsiding to 1 to 2 feet after midnight. A small craft advisory may be needed. $$ LSZ141-191600- Grand Marais to Taconite Harbor MN- 608 AM CDT Sun Jul 19 2026 .TODAY...Southeast wind 5 knots becoming southwest in the late morning and early afternoon, then becoming south late in the afternoon. Areas of smoke early in the morning, then patchy smoke in the late morning and afternoon. Slight chance of rain showers early in the afternoon. Chance of rain showers and slight chance of thunderstorms late in the afternoon. Waves 1 foot or less. .TONIGHT...Southeast wind 5 knots becoming northeast late in the evening, then becoming northwest after midnight becoming southwest early in the morning. Chance of showers and thunderstorms in the evening, then rain showers likely and slight chance of thunderstorms after midnight. Waves 1 foot or less. .MONDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots increasing to 25 knots in the late morning and early afternoon, then decreasing to 20 knots late in the afternoon. Slight chance of thunderstorms in the morning. Chance of rain showers through the day. Chance of thunderstorms in the afternoon. Waves 1 to 2 feet building to 1 to 3 feet in the afternoon. .MONDAY NIGHT...Northwest wind 10 to 15 knots. Gusts up to 20 knots increasing to 25 knots early in the morning. Chance of thunderstorms in the evening. Chance of rain showers through the night. Waves 1 to 2 feet. $$ LSZ142-191600- Taconite Harbor to Silver Bay Harbor MN- 608 AM CDT Sun Jul 19 2026 .TODAY...East wind 5 knots becoming northwest late in the morning, then becoming southwest in the afternoon. Patchy smoke through the day. Slight chance of rain showers in the late morning and afternoon. Slight chance of thunderstorms late in the afternoon. Waves 1 foot or less. .TONIGHT...South wind 5 knots becoming northeast late in the evening, then becoming southwest after midnight. Chance of rain showers and slight chance of thunderstorms. Waves 1 foot or less. .MONDAY...Southwest wind 5 to 10 knots. Gusts up to 20 knots increasing to 25 knots in the late morning and early afternoon, then decreasing to 20 knots late in the afternoon. Slight chance of thunderstorms in the morning. Chance of rain showers through the day. Chance of thunderstorms in the afternoon. Waves 1 to 2 feet. .MONDAY NIGHT...Northwest wind 5 to 10 knots. Gusts up to 20 knots increasing to 25 knots early in the morning. Chance of showers and thunderstorms in the evening. Waves 1 to 2 feet. $$ LSZ143-191600- Silver Bay Harbor to Two Harbors MN- 608 AM CDT Sun Jul 19 2026 .TODAY...Southeast wind 5 knots becoming southwest in the late morning and afternoon. Patchy smoke in the morning. Slight chance of rain showers through the day. Slight chance of thunderstorms late in the afternoon. Waves 1 foot or less. .TONIGHT...Southwest wind 5 knots becoming northwest late in the evening, then becoming southwest 10 to 15 knots with gusts to around 20 knots after midnight. Slight chance of rain showers in the evening. Slight chance of thunderstorms through the night. Chance of rain showers after midnight. Waves 1 to 2 feet. .MONDAY...Southwest wind 10 to 15 knots with gusts to around 25 knots. Slight chance of thunderstorms in the morning. Chance of rain showers through the day. Chance of thunderstorms in the afternoon. Waves 1 to 3 feet. .MONDAY NIGHT...Northwest wind 5 to 10 knots with gusts to around 20 knots. Slight chance of thunderstorms in the evening. Slight chance of showers through the night. Waves 1 to 2 feet. $$ LSZ144-191600- Two Harbors to Duluth MN- 608 AM CDT Sun Jul 19 2026 .TODAY...Southwest wind 5 knots. Slight chance of rain showers in the late morning and early afternoon. Waves 1 foot or less. .TONIGHT...Southwest wind 10 to 15 knots with gusts to around 20 knots. Showers likely and chance of thunderstorms after midnight. Waves 1 to 2 feet. .MONDAY...Southwest wind 15 to 20 knots with gusts to around 25 knots. Chance of showers and thunderstorms. Waves 1 to 3 feet. .MONDAY NIGHT...Northwest wind 15 to 20 knots. Gusts up to 25 knots decreasing to 20 knots after midnight, then increasing to 25 knots early in the morning. Slight chance of thunderstorms in the evening. Slight chance of showers through the night. Waves 1 to 2 feet. $$ LSZ145-191600- Duluth MN to Port Wing WI- 608 AM CDT Sun Jul 19 2026 .TODAY...Southwest wind 5 to 10 knots. Slight chance of showers early in the morning. Patchy smoke in the morning. Waves 1 foot or less. .TONIGHT...Southwest wind 5 knots rising to 15 to 20 knots with gusts to around 25 knots in the late evening and overnight. Chance of showers and thunderstorms after midnight. Waves 1 to 2 feet. .MONDAY...Southwest wind 15 to 20 knots with gusts to around 25 knots. Chance of showers and thunderstorms. Waves 1 to 3 feet. .MONDAY NIGHT...West wind 15 to 20 knots. Gusts up to 25 knots decreasing to 20 knots in the late evening and early morning, then increasing to 25 knots early in the morning. Slight chance of thunderstorms in the evening. Slight chance of showers through the night. Waves 1 to 3 feet. $$ LSZ146-191600- Port Wing to Sand Island WI- 608 AM CDT Sun Jul 19 2026 .TODAY...Southwest wind 5 knots. Slight chance of rain showers in the morning. Patchy smoke until late afternoon. Waves 1 foot or less. .TONIGHT...Southwest wind 5 to 10 knots. Gusts up to 20 knots after midnight. Slight chance of showers in the evening. Slight chance of thunderstorms through the night. Chance of showers after midnight. Waves 1 to 2 feet. .MONDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots increasing to 25 knots in the late morning and afternoon. Slight chance of thunderstorms in the morning. Chance of showers through the day. Chance of thunderstorms in the afternoon. Waves 1 to 3 feet. .MONDAY NIGHT...West wind 10 to 15 knots easing to 5 to 10 knots after midnight. Gusts up to 20 knots. Slight chance of thunderstorms in the evening. Slight chance of showers through the night. Waves 1 to 2 feet. $$ LSZ147-191600- Sand Island to Bayfield WI- 608 AM CDT Sun Jul 19 2026 .TODAY...Southwest wind 5 knots. Patchy smoke until late afternoon. Slight chance of rain showers late in the morning. Waves 1 foot or less. .TONIGHT...Southwest wind 5 to 10 knots. Gusts up to 20 knots after midnight. Slight chance of showers in the evening. Slight chance of thunderstorms through the night. Chance of showers after midnight. Waves 1 foot or less. .MONDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots increasing to 25 knots in the late morning and afternoon. Slight chance of thunderstorms in the morning. Chance of showers through the day. Chance of thunderstorms in the afternoon. Waves 1 to 2 feet. .MONDAY NIGHT...West wind 5 to 10 knots with gusts to around 20 knots. Chance of showers and slight chance of thunderstorms. Waves 1 to 2 feet. $$ LSZ150-191600- Outer Apostle Islands Beyond 5 NM from Mainland- 608 AM CDT Sun Jul 19 2026 .TODAY...Southwest wind 5 knots. Patchy smoke through the day. Waves 1 foot or less. .TONIGHT...South wind 10 to 15 knots with gusts to around 20 knots. Slight chance of showers in the evening. Slight chance of thunderstorms through the night. Chance of showers after midnight. Patchy smoke after midnight. Waves 1 to 2 feet. .MONDAY...Southwest wind 15 to 20 knots. Gusts up to 25 knots increasing to 30 knots early in the afternoon, then decreasing to 25 knots late in the afternoon. Slight chance of thunderstorms in the morning. Chance of showers through the day. Chance of thunderstorms in the afternoon. Waves 1 to 2 feet building to 1 to 3 feet in the late morning and early afternoon, then subsiding to 1 to 2 feet late in the afternoon. .MONDAY NIGHT...West wind 10 to 15 knots. Gusts up to 25 knots decreasing to 20 knots in the late evening and overnight. Chance of showers and slight chance of thunderstorms through the night. Waves 1 to 2 feet. $$ LSZ121-191600- Chequamegon Bay-Bayfield to Oak Point WI- 608 AM CDT Sun Jul 19 2026 .TODAY...Southwest wind 5 knots. Patchy smoke until late afternoon. Waves 1 foot or less. .TONIGHT...Southwest wind 10 to 15 knots with gusts to around 20 knots. Patchy smoke after midnight. Chance of showers and slight chance of thunderstorms after midnight. Waves 1 foot or less. .MONDAY...Southwest wind 15 to 20 knots with gusts to around 25 knots. Slight chance of thunderstorms in the morning. Chance of showers through the day. Chance of thunderstorms in the afternoon. Waves 1 to 2 feet. .MONDAY NIGHT...West wind 10 to 15 knots. Gusts up to 25 knots decreasing to 20 knots in the late evening and overnight. Chance of thunderstorms in the evening. Chance of showers through the night. Waves 1 to 2 feet. $$ LSZ148-191600- Oak Point to Saxon Harbor WI- 608 AM CDT Sun Jul 19 2026 .TODAY...Southwest wind 5 knots. Areas of smoke in the morning, then patchy smoke in the afternoon. Waves 1 foot or less. .TONIGHT...Southwest wind 10 to 15 knots with gusts to around 20 knots. Slight chance of showers in the evening. Slight chance of thunderstorms through the night. Chance of showers after midnight. Patchy smoke after midnight. Waves 1 foot or less. .MONDAY...Southwest wind 15 to 20 knots. Gusts up to 25 knots increasing to 30 knots late in the morning, then decreasing to 25 knots in the afternoon. Slight chance of thunderstorms in the morning. Chance of showers through the day. Chance of thunderstorms in the afternoon. Waves 1 to 3 feet. .MONDAY NIGHT...West wind 10 to 15 knots. Gusts up to 25 knots decreasing to 20 knots in the late evening and overnight. Chance of thunderstorms in the evening. Chance of showers through the night. Slight chance of thunderstorms after midnight. Waves 1 to 2 feet. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH