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Marquette, MI Local Forecast Office

30NM SE Grand Portage MN

Marine Zone Forecast

Rest Of Today

South winds 5 to 15 knots increasing to 10 to 20 knots in the afternoon, then becoming southeast 15 to 25 knots late. A chance of showers and a slight chance of thunderstorms by mid afternoon. Waves calm to 2 feet building to 1 to 3 feet.

Tonight

South gales to 35 knots veering southwest late. Showers and a slight chance of thunderstorms through midnight, then a chance of showers after midnight. Waves building to 4 to 7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet occasionally to 8 feet.

Tuesday

Southwest gales to 45 knots veering west in the afternoon. Waves building to 10 to 14 feet occasionally to 18 feet, then subsiding to 6 to 9 feet occasionally to 11 feet.

Tuesday Night

West winds 20 to 30 knots becoming northwest 5 to 15 knots after midnight. Waves subsiding to calm to 2 feet.

Wednesday

North winds 5 to 15 knots veering east by mid afternoon. Waves calm to 2 feet.

Wednesday Night

South winds 5 to 15 knots veering southwest after midnight. Waves calm to 2 feet.

Thursday

Northwest winds 5 to 15 knots backing southeast. Waves calm to 2 feet.

Friday

South winds 5 to 15 knots becoming east 10 to 20 knots. A chance of showers. Waves calm to 2 feet.