892
FZUS63 KMQT 292001
GLFLS
OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
401 PM 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 30.2 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.
LSZ162-300800-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
401 PM EDT WED OCT 29 2025 /301 PM CDT WED OCT 29 2025/
LATE THIS AFTERNOON
NORTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM
TO 2 FEET.
TONIGHT
NORTHEAST WINDS LESS THAN 10 KNOTS BACKING NORTHWEST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
THURSDAY
NORTHWEST WINDS LESS THAN 10 KNOTS BACKING WEST IN
THE AFTERNOON, THEN INCREASING TO 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. WAVES CALM TO 2 FEET.
FRIDAY
NORTHEAST WINDS 5 TO 15 KNOTS. SCATTERED SHOWERS. WAVES
BUILDING TO 1 TO 3 FEET.
FRIDAY NIGHT
NORTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. SCATTERED RAIN SHOWERS. WAVES SUBSIDING
TO CALM TO 2 FEET.
SATURDAY
NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
SATURDAY NIGHT
SOUTHWEST WINDS 5 TO 15 KNOTS INCREASING TO
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
SUNDAY
SOUTHWEST GALES TO 35 KNOTS VEERING WEST. A CHANCE OF
RAIN SHOWERS. WAVES BUILDING TO 5 TO 8 FEET OCCASIONALLY TO
10 FEET, THEN SUBSIDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
MONDAY
WEST GALES TO 35 KNOTS DIMINISHING TO 20 TO 30 KNOTS.
WAVES BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET, THEN
SUBSIDING TO 1 TO 3 FEET.
LSZ263-300800-
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-
401 PM EDT WED OCT 29 2025
LATE THIS AFTERNOON
NORTHEAST WINDS LESS THAN 10 KNOTS. WAVES
CALM TO 2 FEET.
TONIGHT
NORTHEAST WINDS LESS THAN 10 KNOTS BACKING NORTHWEST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
THURSDAY
NORTHWEST WINDS LESS THAN 10 KNOTS. WAVES CALM TO
2 FEET.
THURSDAY NIGHT
NORTH WINDS LESS THAN 10 KNOTS INCREASING TO
5 TO 15 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
FRIDAY
NORTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS BY MID AFTERNOON. NUMEROUS RAIN SHOWERS THROUGH EARLY
AFTERNOON, THEN SCATTERED RAIN SHOWERS BY MID AFTERNOON. 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. WAVES SUBSIDING TO CALM TO
2 FEET.
SATURDAY NIGHT
WEST WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
SUNDAY
SOUTHWEST GALES TO 40 KNOTS BECOMING WEST GALES TO
35 KNOTS. A CHANCE OF RAIN SHOWERS. WAVES BUILDING TO 4 TO 8 FEET
OCCASIONALLY TO 10 FEET.
MONDAY
WEST GALES TO 35 KNOTS. WAVES BUILDING TO 7 TO 10 FEET
OCCASIONALLY TO 13 FEET, THEN SUBSIDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET.
LSZ264-300800-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
401 PM EDT WED OCT 29 2025
LATE THIS AFTERNOON
NORTHEAST WINDS LESS THAN 10 KNOTS. WAVES
CALM TO 2 FEET.
TONIGHT
NORTH WINDS LESS THAN 10 KNOTS BACKING NORTHWEST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
THURSDAY
NORTH WINDS LESS THAN 10 KNOTS. WAVES CALM TO 2 FEET.
THURSDAY NIGHT
NORTH WINDS 5 TO 15 KNOTS BECOMING NORTHEAST
10 TO 20 KNOTS LATE. WAVES BUILDING TO 1 TO 3 FEET.
FRIDAY
NORTHEAST WINDS 15 TO 25 KNOTS BACKING NORTH BY MID
AFTERNOON. SCATTERED 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. WAVES SUBSIDING TO CALM TO
2 FEET.
SATURDAY NIGHT
WEST WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
SUNDAY
SOUTHWEST GALES TO 35 KNOTS VEERING WEST. A CHANCE OF
RAIN SHOWERS. WAVES BUILDING TO 6 TO 9 FEET OCCASIONALLY TO
11 FEET.
MONDAY
WEST GALES TO 35 KNOTS. WAVES BUILDING TO 8 TO 11 FEET
OCCASIONALLY TO 14 FEET, THEN SUBSIDING TO 4 TO 7 FEET
OCCASIONALLY TO 9 FEET.
LSZ265-300800-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
401 PM EDT WED OCT 29 2025
LATE THIS AFTERNOON
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 LATE.
WAVES CALM TO 2 FEET.
THURSDAY NIGHT
NORTH WINDS 10 TO 20 KNOTS. ISOLATED SHOWERS
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
FRIDAY
NORTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO 30 KNOTS
BY MID AFTERNOON. SCATTERED SHOWERS THROUGH EARLY AFTERNOON, THEN
NUMEROUS SHOWERS BY MID AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
FRIDAY NIGHT
NORTH WINDS 15 TO 25 KNOTS. SCATTERED RAIN
SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.
SATURDAY
NORTH WINDS 10 TO 20 KNOTS. SCATTERED RAIN SHOWERS.
WAVES SUBSIDING TO CALM TO 2 FEET.
SATURDAY NIGHT
WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST
AFTER MIDNIGHT. WAVES 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 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
MONDAY
WEST GALES TO 35 KNOTS. A CHANCE OF SHOWERS. WAVES
BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
LSZ266-300800-
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-
401 PM EDT WED OCT 29 2025
LATE THIS AFTERNOON
NORTHEAST WINDS 5 TO 15 KNOTS. 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 VEERING NORTHEAST
LATE. ISOLATED 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. SCATTERED SHOWERS. WAVES BUILDING TO 3 TO
6 FEET OCCASIONALLY TO 8 FEET.
FRIDAY NIGHT
NORTH WINDS 15 TO 25 KNOTS. NUMEROUS RAIN SHOWERS
THROUGH MIDNIGHT. SCATTERED RAIN SHOWERS AFTER MIDNIGHT. WAVES
SUBSIDING TO 2 TO 4 FEET.
SATURDAY
NORTH WINDS 10 TO 20 KNOTS. SCATTERED RAIN SHOWERS.
WAVES SUBSIDING TO CALM TO 2 FEET.
SATURDAY NIGHT
NORTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST
AFTER MIDNIGHT. SCATTERED RAIN SHOWERS. WAVES CALM TO 2 FEET.
SUNDAY
SOUTHWEST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS. A CHANCE OF RAIN SHOWERS. WAVES BUILDING TO 6 TO 9 FEET
OCCASIONALLY TO 11 FEET.
MONDAY
WEST GALES TO 35 KNOTS. A CHANCE OF SHOWERS. WAVES
BUILDING TO 8 TO 11 FEET OCCASIONALLY TO 14 FEET, THEN SUBSIDING
TO 5 TO 8 FEET OCCASIONALLY TO 10 FEET.
LSZ267-300800-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
401 PM EDT WED OCT 29 2025
LATE THIS AFTERNOON
NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
TONIGHT
NORTH WINDS 5 TO 15 KNOTS BACKING NORTHWEST LATE.
WAVES CALM TO 2 FEET.
THURSDAY
NORTH WINDS 5 TO 15 KNOTS BACKING NORTHWEST LATE.
WAVES CALM TO 2 FEET.
THURSDAY NIGHT
NORTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS LATE. WAVES BUILDING TO 2 TO 4 FEET.
FRIDAY
NORTH WINDS 15 TO 25 KNOTS. SCATTERED SHOWERS BY MID
AFTERNOON. WAVES BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
FRIDAY NIGHT
NORTH WINDS 15 TO 25 KNOTS. SCATTERED RAIN
SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.
SATURDAY
NORTH WINDS 10 TO 20 KNOTS. SCATTERED RAIN SHOWERS.
WAVES SUBSIDING TO CALM TO 2 FEET.
SATURDAY NIGHT
NORTHWEST WINDS 5 TO 15 KNOTS BACKING WEST
AFTER MIDNIGHT. SCATTERED RAIN SHOWERS. WAVES CALM TO 2 FEET.
SUNDAY
SOUTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS. A CHANCE OF RAIN SHOWERS. WAVES BUILDING TO 4 TO 7 FEET
OCCASIONALLY TO 9 FEET.
MONDAY
WEST GALES TO 35 KNOTS. SHOWERS LIKELY, THEN A CHANCE
OF SHOWERS. WAVES BUILDING TO 6 TO 10 FEET OCCASIONALLY TO
13 FEET.
LSZ261-300200-
MAFOR 2921/
SUPERIOR WEST 13100 13700 12600. WAVES 1 FOOT OR LESS.
SUPERIOR NORTH CENTRAL 11100 12800 12700 13800. WAVES 2 FEET OR
LESS.
SUPERIOR SOUTH CENTRAL 12100 12800 12700 12800. WAVES 1 FOOT OR
LESS.
SUPERIOR EAST 14800 11700 12800 11700. 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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