088
FZUS63 KMQT 271401
GLFLS
OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
1001 AM EDT SUN SEP 27 2026
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 HIGH SHIFTS FROM NORTHERN QUEBEC TO THE CANADIAN
MARITIMES TODAY WHILE A 29.3 INCH LOW SPINS OVER NUNAVUT AND A 29.5
INCH NOR'EASTER WEAKENS TO 29.7 INCHES OVER NEW JERSEY. LAKE
SUPERIOR WILL REMAIN UNDER 30.1 INCH RIDGING BETWEEN THESE THREE
FEATURES THROUGH MONDAY. A 29.7 INCH LOW DEVELOPS IN THE LEE OF THE
NORTHERN ROCKIES ON MONDAY AND EJECTS NORTHEAST TO NORTHERN ONTARIO
AT 29.6 INCHES BY TUESDAY. TUESDAY NIGHT THROUGH WEDNESDAY NIGHT, A
29.3 INCH LOW MOVES ACROSS THE FAR NORTHERN CANADIAN PRAIRIE TO
HUDSON BAY, DRAGGING A 29.7 INCH TROUGH ACROSS LAKE SUPERIOR
WEDNESDAY NIGHT. HIGH PRESSURE OF 30.2 INCHES RETURNS TO THE UPPER
GREAT LAKES BY FRIDAY.
LSZ162-272000-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
1001 AM EDT SUN SEP 27 2026 /901 AM CDT SUN SEP 27 2026/
REST OF TODAY
SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST IN
THE AFTERNOON. WAVES CALM TO 2 FEET.
TONIGHT
WEST WINDS 5 TO 15 KNOTS VEERING NORTH LATE. WAVES
CALM TO 2 FEET.
MONDAY
NORTHEAST WINDS LESS THAN 10 KNOTS BECOMING EAST 5 TO
15 KNOTS IN THE AFTERNOON. WAVES CALM TO 2 FEET.
MONDAY NIGHT
EAST WINDS 5 TO 15 KNOTS VEERING SOUTH AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
TUESDAY
SOUTH WINDS 10 TO 20 KNOTS VEERING SOUTHWEST BY MID
AFTERNOON. A CHANCE OF RAIN THROUGH EARLY AFTERNOON, THEN RAIN
LIKELY BY MID AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET, THEN
SUBSIDING TO CALM TO 2 FEET.
TUESDAY NIGHT
SOUTH WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST
5 TO 15 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN. WAVES CALM TO
2 FEET.
WEDNESDAY
SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.
THURSDAY
WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST. WAVES
BUILDING TO 1 TO 3 FEET, THEN SUBSIDING TO CALM TO 2 FEET.
LSZ263-272000-
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 SUN SEP 27 2026
REST OF TODAY
SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST IN
THE AFTERNOON. WAVES CALM TO 2 FEET.
TONIGHT
WEST WINDS 5 TO 15 KNOTS VEERING NORTH LATE. WAVES
CALM TO 2 FEET.
MONDAY
NORTHEAST WINDS 5 TO 15 KNOTS DIMINISHING TO LESS THAN
10 KNOTS IN THE AFTERNOON, THEN BECOMING EAST 5 TO 15 KNOTS LATE.
WAVES CALM TO 2 FEET.
MONDAY NIGHT
SOUTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
TUESDAY
SOUTH WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN BY MID
AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
TUESDAY NIGHT
SOUTH WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST
5 TO 15 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN. WAVES SUBSIDING
TO CALM TO 2 FEET.
WEDNESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST. WAVES
CALM TO 2 FEET.
THURSDAY
WEST WINDS 20 TO 30 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS. WAVES BUILDING TO 2 TO 4 FEET, THEN SUBSIDING TO 1 TO
3 FEET.
LSZ264-272000-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
1001 AM EDT SUN SEP 27 2026
REST OF TODAY
SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST IN
THE AFTERNOON. WAVES CALM TO 2 FEET.
TONIGHT
WEST WINDS LESS THAN 10 KNOTS BECOMING NORTH 5 TO
15 KNOTS LATE. WAVES CALM TO 2 FEET.
MONDAY
NORTH WINDS 5 TO 15 KNOTS BECOMING NORTHEAST LESS THAN
10 KNOTS IN THE AFTERNOON, THEN VEERING EAST LATE. WAVES CALM TO
2 FEET.
MONDAY NIGHT
SOUTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
TUESDAY
SOUTH WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN BY MID
AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
TUESDAY NIGHT
SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. RAIN LIKELY THROUGH MIDNIGHT, THEN A CHANCE OF
RAIN AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
WEDNESDAY
SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.
THURSDAY
WEST WINDS 20 TO 30 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS. WAVES BUILDING TO 2 TO 4 FEET, THEN SUBSIDING TO 1 TO
3 FEET.
LSZ265-272000-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
1001 AM EDT SUN SEP 27 2026
REST OF TODAY
SOUTH WINDS 5 TO 15 KNOTS DIMINISHING TO LESS
THAN 10 KNOTS LATE. WAVES CALM TO 2 FEET.
TONIGHT
SOUTHWEST WINDS 5 TO 15 KNOTS VEERING NORTHWEST LATE.
WAVES CALM TO 2 FEET.
MONDAY
NORTH WINDS 5 TO 15 KNOTS VEERING EAST LATE. WAVES CALM
TO 2 FEET.
MONDAY NIGHT
SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING SOUTH
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
TUESDAY
SOUTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF RAIN BY MID
AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
TUESDAY NIGHT
SOUTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. RAIN LIKELY THROUGH MIDNIGHT, THEN A
CHANCE OF RAIN AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
WEDNESDAY
SOUTH WINDS 10 TO 20 KNOTS BECOMING WEST 15 TO
25 KNOTS. A CHANCE OF RAIN. WAVES CALM TO 2 FEET.
THURSDAY
WEST GALES TO 35 KNOTS BECOMING NORTHWEST 20 TO
30 KNOTS. WAVES BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET,
THEN SUBSIDING TO 2 TO 4 FEET.
LSZ266-272000-
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 SUN SEP 27 2026
REST OF TODAY
SOUTH WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST
LESS THAN 10 KNOTS LATE. WAVES CALM TO 2 FEET.
TONIGHT
SOUTHWEST WINDS LESS THAN 10 KNOTS VEERING WEST AFTER
MIDNIGHT, THEN BECOMING NORTH 5 TO 15 KNOTS LATE. WAVES CALM TO
2 FEET.
MONDAY
NORTH WINDS 5 TO 15 KNOTS DIMINISHING TO LESS THAN
10 KNOTS LATE. WAVES CALM TO 2 FEET.
MONDAY NIGHT
SOUTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
TUESDAY
SOUTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF RAIN BY MID
AFTERNOON. WAVES BUILDING TO 2 TO 4 FEET.
TUESDAY NIGHT
SOUTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. RAIN LIKELY THROUGH MIDNIGHT, THEN A
CHANCE OF RAIN AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
WEDNESDAY
SOUTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS. A CHANCE OF RAIN. WAVES SUBSIDING TO CALM TO 2 FEET,
THEN BUILDING TO 1 TO 3 FEET.
THURSDAY
WEST WINDS 20 TO 30 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS. WAVES BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET,
THEN SUBSIDING TO 2 TO 4 FEET.
LSZ267-272000-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
1001 AM EDT SUN SEP 27 2026
REST OF TODAY
SOUTH WINDS 5 TO 15 KNOTS DIMINISHING TO LESS
THAN 10 KNOTS IN THE AFTERNOON, THEN BACKING NORTH LATE. WAVES
CALM TO 2 FEET.
TONIGHT
NORTH WINDS LESS THAN 10 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS AFTER MIDNIGHT. PATCHY FOG THROUGH MIDNIGHT. WAVES CALM
TO 2 FEET.
MONDAY
NORTH WINDS 5 TO 15 KNOTS BACKING NORTHWEST IN THE
AFTERNOON. WAVES CALM TO 2 FEET.
MONDAY NIGHT
NORTHWEST WINDS 5 TO 15 KNOTS BECOMING SOUTH LESS
THAN 10 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
TUESDAY
SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
BY MID AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
TUESDAY NIGHT
SOUTH WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN
THROUGH MIDNIGHT, THEN RAIN LIKELY AFTER MIDNIGHT. WAVES BUILDING
TO 2 TO 4 FEET, THEN SUBSIDING TO 1 TO 3 FEET.
WEDNESDAY
SOUTH WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN. WAVES
SUBSIDING TO CALM TO 2 FEET, THEN BUILDING TO 1 TO 3 FEET.
THURSDAY
WEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 20 TO
30 KNOTS. WAVES BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
LSZ261-272000-
MAFOR 2715/
SUPERIOR WEST 11400 13500 11600 11700 11800 11100. WAVES 1 FOOT
OR LESS.
SUPERIOR NORTH CENTRAL 14500 11600 11700 12800. WAVES 1 FOOT OR
LESS.
SUPERIOR SOUTH CENTRAL 11400 11300 11200 11500 11600 12700 11800.
WAVES 1 FOOT OR LESS.
SUPERIOR EAST 11400 11500 11800 11100 11600 12700 11800. 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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