151
FZUS63 KMQT 300201
GLFLS
OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
1001 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 TONIGHT 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-
1001 PM EDT WED OCT 29 2025 /901 PM CDT WED OCT 29 2025/
REST OF 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-
1001 PM EDT WED OCT 29 2025
REST OF 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. ISOLATED RAIN SHOWERS. 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-
1001 PM EDT WED OCT 29 2025
REST OF 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. ISOLATED RAIN SHOWERS THROUGH 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-
1001 PM EDT WED OCT 29 2025
REST OF TONIGHT
NORTHEAST WINDS LESS THAN 10 KNOTS BACKING
NORTH 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-
1001 PM EDT WED OCT 29 2025
REST OF 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-
1001 PM EDT WED OCT 29 2025
REST OF 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.
LSZ261-300800-
MAFOR 3003/
SUPERIOR WEST 11100 13700 13600 11700. WAVES 1 FOOT OR LESS.
SUPERIOR NORTH CENTRAL 11800 12700 14800 11100. WAVES 1 FOOT OR
LESS.
SUPERIOR SOUTH CENTRAL 12800 12700 14800. WAVES 1 FOOT OR LESS.
SUPERIOR EAST 12800 11700 12800 12700 11810. WAVES 2 FEET 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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