National Weather Service Marine Forecast FZUS63 KMQT

FZUS63 KMQT 270157
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
957 PM EDT Fri Jul 26 2024

For waters beyond 5 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.

SYNOPSIS
A 30.2 inch high centered over southern Lake Huron tonight gradually weakens and shifts eastward overnight. Expect 29.5 inch troughing to develop over the northern Plains Saturday. This trough will gradually fill to 29.7 inches as it sweeps eastward over Lake Superior Monday into early Tuesday. Weak high pressure follows Wednesday at 29.8 inches.

LSZ162-271000
Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM
957 PM EDT Fri Jul 26 2024 /857 PM CDT Fri Jul 26 2024/

REST OF TONIGHT
South winds 10 to 20 knots increasing to 15 to 25 knots late. Waves calm to 2 feet building to 2 to 4 feet, then subsiding to 1 to 3 feet.

SATURDAY
South winds 10 to 20 knots. Waves subsiding to calm to 2 feet, then building to 1 to 3 feet.

SATURDAY NIGHT
South winds 10 to 20 knots becoming southwest 15 to 25 knots after midnight. Waves building to 2 to 4 feet.

SUNDAY
Southwest winds 15 to 25 knots becoming south 10 to 20 knots by mid afternoon. A slight chance of showers by mid afternoon. Waves subsiding to calm to 2 feet.

SUNDAY NIGHT
South winds 10 to 20 knots. A chance of showers and thunderstorms. Waves calm to 2 feet.

MONDAY
South winds 10 to 20 knots. A chance of showers through early afternoon. A chance of thunderstorms. Showers likely by mid afternoon. Waves calm to 2 feet.

MONDAY NIGHT
West winds 5 to 15 knots. Waves calm to 2 feet.

TUESDAY
Southwest winds 5 to 15 knots. Waves calm to 2 feet.

WEDNESDAY
Southwest winds 5 to 15 knots veering west. A chance of showers. Waves calm to 2 feet.

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LSZ263-271000
Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park
957 PM EDT Fri Jul 26 2024

REST OF TONIGHT
South winds 10 to 20 knots increasing to 15 to 25 knots after midnight, then diminishing to 10 to 20 knots late. Waves calm to 2 feet building to 2 to 4 feet.

SATURDAY
South winds 10 to 20 knots. Waves subsiding to 1 to 3 feet.

SATURDAY NIGHT
South winds 10 to 20 knots increasing to 15 to 25 knots after midnight, then becoming southwest 10 to 20 knots late. Waves building to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet.

SUNDAY
Southwest winds 15 to 25 knots backing south by mid afternoon. Waves building to 3 to 5 feet occasionally to 7 feet, then subsiding to 1 to 3 feet.

SUNDAY NIGHT
South winds 5 to 15 knots. A chance of showers. Waves subsiding to calm to 2 feet.

MONDAY
South winds 5 to 15 knots. A chance of showers through early afternoon. A chance of thunderstorms. Showers likely by mid afternoon. Waves calm to 2 feet.

MONDAY NIGHT
West winds 5 to 15 knots. A chance of showers and thunderstorms through midnight. Waves calm to 2 feet.

TUESDAY
West winds 5 to 15 knots backing southwest. Waves calm to 2 feet.

WEDNESDAY
Southwest winds 5 to 15 knots. Waves calm to 2 feet.

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LSZ264-271000
Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border
957 PM EDT Fri Jul 26 2024

REST OF TONIGHT
South winds 5 to 15 knots increasing to 10 to 20 knots after midnight. Waves 2 to 4 feet building to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet.

SATURDAY
South winds 10 to 20 knots diminishing to 5 to 15 knots late. Waves subsiding to 1 to 3 feet.

SATURDAY NIGHT
South winds 5 to 15 knots increasing to 10 to 20 knots after midnight, then veering southwest late. Waves building to 2 to 4 feet.

SUNDAY
Southwest winds 10 to 20 knots backing south by mid afternoon. Waves subsiding to 1 to 3 feet.

SUNDAY NIGHT
South winds 5 to 15 knots. Waves subsiding to calm to 2 feet.

MONDAY
South winds 5 to 15 knots backing southeast by mid afternoon. A chance of showers. Waves calm to 2 feet.

MONDAY NIGHT
South winds 5 to 15 knots veering west after midnight. A chance of showers and thunderstorms. Waves calm to 2 feet.

TUESDAY
West winds 5 to 15 knots backing southwest. Waves calm to 2 feet.

WEDNESDAY
Southwest winds 5 to 15 knots. Waves calm to 2 feet.

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LSZ265-271000
Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore
957 PM EDT Fri Jul 26 2024

REST OF TONIGHT
South winds 15 to 25 knots diminishing to 10 to 20 knots after midnight. Waves 2 to 4 feet subsiding to calm to 2 feet.

SATURDAY
South winds 10 to 20 knots. Waves building to 1 to 3 feet.

SATURDAY NIGHT
South winds 10 to 20 knots. Waves building to 2 to 4 feet, then subsiding to calm to 2 feet.

SUNDAY
South winds 10 to 20 knots. Waves calm to 2 feet.

SUNDAY NIGHT
South winds 10 to 20 knots. Waves calm to 2 feet.

MONDAY
South winds 10 to 20 knots backing southeast by mid afternoon. A chance of showers and thunderstorms. Waves calm to 2 feet.

MONDAY NIGHT
South winds 10 to 20 knots becoming west 5 to 15 knots after midnight. A chance of showers and thunderstorms. Waves calm to 2 feet.

TUESDAY
West winds 5 to 15 knots backing southwest. Waves calm to 2 feet.

WEDNESDAY
Southwest winds 5 to 15 knots backing south. Waves calm to 2 feet.

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LSZ266-271000
Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM from shore
957 PM EDT Fri Jul 26 2024

REST OF TONIGHT
South winds 15 to 25 knots diminishing to 10 to 20 knots late. Waves 3 to 6 feet occasionally to 8 feet, then subsiding to 2 to 4 feet.

SATURDAY
South winds 10 to 20 knots increasing to 15 to 25 knots late. Waves subsiding to 1 to 3 feet, then building to 2 to 4 feet.

SATURDAY NIGHT
South winds 15 to 25 knots. Waves building to 3 to 6 feet occasionally to 8 feet, then subsiding to 2 to 4 feet.

SUNDAY
South winds 10 to 20 knots increasing to 15 to 25 knots by mid afternoon. Waves subsiding to 1 to 3 feet.

SUNDAY NIGHT
South winds 10 to 20 knots. Waves building to 2 to 4 feet, then subsiding to 1 to 3 feet.

MONDAY
South winds 10 to 20 knots. Waves subsiding to calm to 2 feet.

MONDAY NIGHT
South winds 10 to 20 knots becoming west 5 to 15 knots after midnight. A chance of showers and thunderstorms. Waves calm to 2 feet.

TUESDAY
West winds 5 to 15 knots backing southwest. Waves calm to 2 feet.

WEDNESDAY
South winds 5 to 15 knots. Waves calm to 2 feet.

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LSZ267-271000
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border
957 PM EDT Fri Jul 26 2024

REST OF TONIGHT
South winds 10 to 20 knots. Waves calm to 2 feet building to 1 to 3 feet.

SATURDAY
South winds 10 to 20 knots. Waves subsiding to calm to 2 feet, then building to 1 to 3 feet.

SATURDAY NIGHT
South winds 15 to 25 knots. Waves building to 2 to 4 feet.

SUNDAY
South winds 10 to 20 knots. Waves subsiding to calm to 2 feet.

SUNDAY NIGHT
South winds 10 to 20 knots. Waves building to 1 to 3 feet, then subsiding to calm to 2 feet.

MONDAY
South winds 10 to 20 knots. Waves calm to 2 feet.

MONDAY NIGHT
South winds 10 to 20 knots. A chance of showers and thunderstorms. Waves calm to 2 feet.

TUESDAY
West winds 10 to 20 knots diminishing to 5 to 15 knots. A chance of showers. Waves calm to 2 feet.

WEDNESDAY
South winds 5 to 15 knots. Waves calm to 2 feet.

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LSZ261-271000
MAFOR 2703/ Superior West 12420 11520 12420 11410 12420. Waves 1 to 4 feet.

Superior North Central 15420 11410 11420. Waves 1 to 4 feet.

Superior South Central 11420 14410 13420. Waves 1 to 4 feet building to 3 to 5 feet Saturday evening.

Superior East 14420 11420 11410 11420 11430. Waves 2 to 5 feet.

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JSS

Experimental modernized open lake forecast is available online at weather.gov/mqt/glftable

Graphical marine forecasts are available online at: weather.gov/greatlakes