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Duluth, MN Local Forecast Office

10NM SW Grand Portage MN

Marine Zone Forecast

Rest Of Today

East wind 10 to 15 knots with gusts to around 20 knots becoming northeast up to 30 knots with gales to around 35 knots in the afternoon. Slight chance of rain showers late in the morning, then rain showers and slight chance of thunderstorms in the afternoon. Waves 1 to 2 feet building to 4 to 7 feet. Waves occasionally to 9 feet.

Tonight

East wind up to 30 knots with gales to around 40 knots becoming southeast 20 to 25 knots with gales to around 35 knots early in the morning. Rain showers and chance of thunderstorms. Waves 7 to 10 feet. Waves occasionally to 13 feet.

Wednesday

South wind 20 to 25 knots with gales to around 35 knots becoming southwest up to 30 knots with gales to around 40 knots in the late morning and afternoon. Chance of rain showers and slight chance of thunderstorms in the morning, then rain showers likely in the afternoon. Waves 7 to 12 feet. Waves occasionally to 16 feet.

Wednesday Night

West wind 20 to 25 knots. Gusts up to 35 knots decreasing to 30 knots in the late evening and overnight. Rain showers likely in the evening, then chance of rain showers after midnight. Waves 6 to 9 feet subsiding to 4 to 6 feet after midnight. Waves occasionally to 11 feet. A gale warning may be needed.