784
FZUS63 KMQT 291402
GLFLS
OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
1001 AM EDT WED OCT 29 2025
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 30.3 INCH RIDGE OVER LAKE SUPERIOR WILL WANE TODAY AND THURSDAY AS
A 29.6 INCH LOW LIFTS INTO THE MID-ATLANTIC WHILE DEEPENING TO 29.5
INCHES AND A 29.8 INCH LOW MOVES SOUTHEAST TOWARD THE UPPER GREAT
LAKES. THE DOWNSTREAM LOW WILL CONTINUE DEEPENING AS IT ABSORBS THE
OTHER LOW, REACHING 29.0 INCHES OVER MAINE BY FRIDAY AFTERNOON WHILE
EXTENDING 29.8 INCH TROUGHING WEST OVER LAKE SUPERIOR. THE LOW
DEEPENS FURTHER TO 28.7 INCHES BY SATURDAY MORNING OVER THE CANADIAN
MARITIMES WHILE 30.1 INCH RIDGING BUILDS OVER LAKE SUPERIOR THANKS
TO A 30.2 INCH HIGH STRETCHING ACROSS THE CENTRAL PLAINS. THIS HIGH
SETTLES EASTWARD INTO THE MIDWEST AT 30.3 INCHES BY SUNDAY WHILE A
29.3 INCH LOW MOVES INTO NORTHERN MANITOBA. THIS LOW WILL PULL A
29.8 INCH THROUGH THROUGH LAKE SUPERIOR MONDAY.
LSZ162-292000-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
1001 AM EDT WED OCT 29 2025 /901 AM CDT WED OCT 29 2025/
REST OF TODAY
NORTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
TONIGHT
NORTHEAST WINDS 5 TO 15 KNOTS BECOMING NORTH LESS THAN
10 KNOTS AFTER MIDNIGHT, THEN BACKING NORTHWEST LATE. WAVES CALM
TO 2 FEET.
THURSDAY
NORTHWEST WINDS LESS THAN 10 KNOTS BACKING WEST IN
THE AFTERNOON, THEN BECOMING SOUTHWEST 5 TO 15 KNOTS LATE. WAVES
CALM TO 2 FEET.
THURSDAY NIGHT
NORTH WINDS LESS THAN 10 KNOTS INCREASING TO
5 TO 15 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
FRIDAY
NORTH WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS. WAVES
CALM TO 2 FEET.
FRIDAY NIGHT
NORTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES CALM TO
2 FEET.
SATURDAY
NORTH WINDS 5 TO 15 KNOTS BACKING SOUTHWEST. WAVES
CALM TO 2 FEET.
SUNDAY
SOUTHWEST WINDS 20 TO 30 KNOTS VEERING WEST. A CHANCE
OF RAIN SHOWERS. WAVES BUILDING TO 3 TO 6 FEET OCCASIONALLY TO
8 FEET, THEN SUBSIDING TO 2 TO 4 FEET.
LSZ263-292000-
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-
1001 AM EDT WED OCT 29 2025
REST OF TODAY
SOUTHEAST WINDS LESS THAN 10 KNOTS BACKING
NORTHEAST IN THE AFTERNOON, THEN INCREASING TO 5 TO 15 KNOTS
LATE. WAVES CALM TO 2 FEET.
TONIGHT
NORTHEAST WINDS LESS THAN 10 KNOTS VEERING EAST AFTER
MIDNIGHT, THEN BACKING NORTHWEST LATE. WAVES CALM TO 2 FEET.
THURSDAY
NORTH WINDS LESS THAN 10 KNOTS BACKING NORTHWEST IN
THE AFTERNOON. WAVES CALM TO 2 FEET.
THURSDAY NIGHT
NORTH WINDS LESS THAN 10 KNOTS INCREASING TO
5 TO 15 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
FRIDAY
NORTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS
BY MID AFTERNOON. A CHANCE OF RAIN SHOWERS. WAVES BUILDING TO
2 TO 4 FEET.
FRIDAY NIGHT
NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES 2 TO 4 FEET.
SATURDAY
NORTH WINDS 5 TO 15 KNOTS BACKING SOUTHWEST. WAVES
SUBSIDING TO CALM TO 2 FEET.
SUNDAY
SOUTHWEST GALES TO 35 KNOTS VEERING WEST. A CHANCE OF
RAIN SHOWERS. WAVES BUILDING TO 4 TO 7 FEET OCCASIONALLY TO
9 FEET, THEN SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
LSZ264-292000-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
1001 AM EDT WED OCT 29 2025
REST OF TODAY
SOUTHEAST WINDS LESS THAN 10 KNOTS BACKING EAST
IN THE AFTERNOON. WAVES 1 TO 3 FEET SUBSIDING TO CALM TO 2 FEET.
TONIGHT
NORTHEAST WINDS LESS THAN 10 KNOTS VEERING EAST AFTER
MIDNIGHT, THEN BACKING NORTH LATE. WAVES CALM TO 2 FEET.
THURSDAY
NORTH WINDS LESS THAN 10 KNOTS BACKING NORTHWEST IN
THE AFTERNOON. WAVES CALM TO 2 FEET.
THURSDAY NIGHT
NORTH WINDS 5 TO 15 KNOTS VEERING NORTHEAST
AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT. WAVES
BUILDING TO 1 TO 3 FEET.
FRIDAY
NORTHEAST WINDS 10 TO 20 KNOTS BECOMING NORTH 15 TO
25 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS. WAVES BUILDING TO
3 TO 5 FEET OCCASIONALLY TO 7 FEET.
FRIDAY NIGHT
NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 2 TO 4 FEET.
SATURDAY
NORTH WINDS 5 TO 15 KNOTS BACKING SOUTHWEST. WAVES
SUBSIDING TO CALM TO 2 FEET.
SUNDAY
SOUTHWEST WINDS 20 TO 30 KNOTS BECOMING WEST GALES TO
35 KNOTS. A CHANCE OF RAIN SHOWERS. WAVES BUILDING TO 6 TO 9 FEET
OCCASIONALLY TO 11 FEET.
LSZ265-292000-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
1001 AM EDT WED OCT 29 2025
REST OF TODAY
EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
TONIGHT
NORTHEAST WINDS 5 TO 15 KNOTS BECOMING NORTH LESS THAN
10 KNOTS AFTER MIDNIGHT, THEN BECOMING NORTHWEST 5 TO 15 KNOTS
LATE. WAVES CALM TO 2 FEET.
THURSDAY
NORTHWEST WINDS 5 TO 15 KNOTS VEERING NORTH IN THE
AFTERNOON, THEN INCREASING TO 10 TO 20 KNOTS LATE. A SLIGHT
CHANCE OF SHOWERS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
THURSDAY NIGHT
NORTH WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF
SHOWERS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
FRIDAY
NORTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO 30 KNOTS
BY MID AFTERNOON. A CHANCE OF SHOWERS THROUGH EARLY AFTERNOON,
THEN SHOWERS LIKELY BY MID AFTERNOON. WAVES BUILDING TO 3 TO
5 FEET OCCASIONALLY TO 7 FEET.
FRIDAY NIGHT
NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES
SUBSIDING TO 2 TO 4 FEET.
SATURDAY
NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS. A CHANCE OF RAIN SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET.
SUNDAY
SOUTHWEST WINDS 15 TO 25 KNOTS INCREASING TO GALES TO
35 KNOTS. A CHANCE OF RAIN SHOWERS. WAVES BUILDING TO 2 TO
4 FEET.
LSZ266-292000-
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-
1001 AM EDT WED OCT 29 2025
REST OF TODAY
EAST WINDS 5 TO 15 KNOTS BACKING NORTHEAST LATE.
WAVES CALM TO 2 FEET.
TONIGHT
NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
THURSDAY
NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
THURSDAY NIGHT
NORTH WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF
SHOWERS AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
FRIDAY
NORTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO 30 KNOTS
BY MID AFTERNOON. A CHANCE OF SHOWERS. WAVES BUILDING TO 3 TO
6 FEET OCCASIONALLY TO 8 FEET.
FRIDAY NIGHT
NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. RAIN SHOWERS LIKELY THROUGH MIDNIGHT. A
CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO 3 TO
5 FEET OCCASIONALLY TO 7 FEET.
SATURDAY
NORTH WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS. A CHANCE OF RAIN SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET.
SUNDAY
SOUTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS. A CHANCE OF RAIN SHOWERS, THEN RAIN SHOWERS LIKELY.
WAVES BUILDING TO 5 TO 8 FEET OCCASIONALLY TO 10 FEET.
LSZ267-292000-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
1001 AM EDT WED OCT 29 2025
REST OF TODAY
EAST WINDS 5 TO 15 KNOTS BACKING NORTH LATE.
WAVES CALM TO 2 FEET.
TONIGHT
NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
THURSDAY
NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
THURSDAY NIGHT
NORTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
FRIDAY
NORTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO 30 KNOTS
BY MID AFTERNOON. A CHANCE OF SHOWERS. WAVES BUILDING TO 3 TO
6 FEET OCCASIONALLY TO 8 FEET.
FRIDAY NIGHT
NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. RAIN SHOWERS LIKELY THROUGH MIDNIGHT,
THEN A CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO
2 TO 4 FEET.
SATURDAY
NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS. A CHANCE OF RAIN SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET.
SUNDAY
SOUTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS. A CHANCE OF RAIN SHOWERS, THEN RAIN SHOWERS LIKELY.
WAVES BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.
LSZ261-292000-
MAFOR 2915/
SUPERIOR WEST 11200 13100 11200 13700. WAVES 1 FOOT OR LESS.
SUPERIOR NORTH CENTRAL 12200 14100 12800. WAVES 1 TO 3 FEET THIS
AFTERNOON. WAVES 1 FOOT OR LESS TONIGHT AND THURSDAY MORNING.
SUPERIOR SOUTH CENTRAL 12200 12100 12800 12700. WAVES 2 FEET OR
LESS.
SUPERIOR EAST 11200 11100 15800. WAVES 1 FOOT OR LESS.
WFO MQT
EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT
WEATHER.GOV/MQT/GLFTABLE
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
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