241
FZUS63 KMQT 260801
GLFLS
OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
401 AM EDT SAT SEP 26 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 BROAD AREA OF 30.3 INCH HIGH PRESSURE OVER THE GREAT LAKES BASIN
TODAY SHIFTS NORTHEAST TOWARD NORTHERN QUEBEC TONIGHT WHILE A 29.4
INCH LOW DEEPENS OVER THE NORTHERN CANADIAN PRAIRIES. SUNDAY THROUGH
MONDAY, THE HIGH SHIFTS EAST TO THE CANADIAN MARITIMES, WEAKENING TO
30.1 INCHES. THIS GRADUALLY WEAKENS RIDGING OVER LAKE SUPERIOR FROM
30.1 INCHES SUNDAY MORNING TO 29.9 INCHES BY MONDAY NIGHT AS A 29.8
INCH TROUGH APPROACHES FROM THE WEST. BY TUESDAY EVENING THE TROUGH
WILL MOVE OVER LAKE SUPERIOR AT AROUND 29.7 INCHES.
LSZ162-262000-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
401 AM EDT SAT SEP 26 2026 /301 AM CDT SAT SEP 26 2026/
EARLY THIS MORNING
EAST WINDS 5 TO 15 KNOTS. PATCHY FOG. WAVES
CALM TO 2 FEET.
TODAY
EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
LATE. PATCHY FOG THROUGH EARLY AFTERNOON. WAVES CALM TO 2 FEET.
TONIGHT
EAST WINDS 5 TO 15 KNOTS VEERING SOUTH AFTER MIDNIGHT.
A CHANCE OF SHOWERS. WAVES CALM TO 2 FEET.
SUNDAY
SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST LATE. A
CHANCE OF SHOWERS THROUGH EARLY AFTERNOON. WAVES CALM TO 2 FEET.
SUNDAY NIGHT
WEST WINDS LESS THAN 10 KNOTS VEERING NORTH AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
MONDAY
NORTHEAST WINDS LESS THAN 10 KNOTS BECOMING EAST 5 TO
15 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
MONDAY NIGHT
EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
TUESDAY
SOUTH WINDS 5 TO 15 KNOTS VEERING WEST. SHOWERS
LIKELY, THEN A CHANCE OF SHOWERS. WAVES CALM TO 2 FEET.
WEDNESDAY
SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST. WAVES
CALM TO 2 FEET.
LSZ263-262000-
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 AM EDT SAT SEP 26 2026
EARLY THIS MORNING
EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
TODAY
SOUTHEAST WINDS 5 TO 15 KNOTS BACKING EAST IN THE
AFTERNOON. WAVES CALM TO 2 FEET.
TONIGHT
SOUTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH AFTER
MIDNIGHT. A SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT. WAVES CALM
TO 2 FEET.
SUNDAY
SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST IN THE
AFTERNOON. A SLIGHT CHANCE OF SHOWERS THROUGH EARLY AFTERNOON.
WAVES CALM TO 2 FEET.
SUNDAY NIGHT
SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
MONDAY
NORTHEAST WINDS 5 TO 15 KNOTS BECOMING EAST LESS THAN
10 KNOTS BY MID AFTERNOON. 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 5 TO 15 KNOTS VEERING SOUTHWEST. SHOWERS
LIKELY, THEN A CHANCE OF SHOWERS. WAVES CALM TO 2 FEET.
WEDNESDAY
SOUTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.
LSZ264-262000-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
401 AM EDT SAT SEP 26 2026
EARLY THIS MORNING
EAST WINDS 5 TO 15 KNOTS. PATCHY FOG. WAVES
CALM TO 2 FEET.
TODAY
EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST IN THE
AFTERNOON, THEN BACKING EAST LATE. PATCHY FOG THROUGH EARLY
AFTERNOON. WAVES CALM TO 2 FEET.
TONIGHT
SOUTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
SUNDAY
SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST IN THE
AFTERNOON. A SLIGHT CHANCE OF SHOWERS THROUGH EARLY AFTERNOON.
WAVES CALM TO 2 FEET.
SUNDAY NIGHT
SOUTHWEST WINDS LESS THAN 10 KNOTS VEERING WEST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
MONDAY
NORTH WINDS LESS THAN 10 KNOTS VEERING EAST BY MID
AFTERNOON. 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 5 TO 15 KNOTS VEERING SOUTHWEST. A CHANCE
OF SHOWERS. WAVES CALM TO 2 FEET.
WEDNESDAY
SOUTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.
LSZ265-262000-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
401 AM EDT SAT SEP 26 2026
EARLY THIS MORNING
SOUTHEAST WINDS 5 TO 15 KNOTS. PATCHY FOG.
WAVES CALM TO 2 FEET.
TODAY
SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING EAST 10 TO
20 KNOTS IN THE AFTERNOON, THEN INCREASING TO 15 TO 25 KNOTS
LATE. PATCHY FOG THROUGH EARLY AFTERNOON. WAVES CALM TO 2 FEET.
TONIGHT
SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH AFTER
MIDNIGHT, THEN DIMINISHING TO 5 TO 15 KNOTS LATE. WAVES CALM TO
2 FEET.
SUNDAY
SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST IN THE
AFTERNOON, THEN VEERING NORTH LATE. WAVES CALM TO 2 FEET.
SUNDAY NIGHT
WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
MONDAY
NORTHWEST WINDS 5 TO 15 KNOTS VEERING EAST BY MID
AFTERNOON. 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. A CHANCE OF SHOWERS. WAVES CALM TO 2 FEET.
WEDNESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES CALM TO
2 FEET.
LSZ266-262000-
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 AM EDT SAT SEP 26 2026
EARLY THIS MORNING
EAST WINDS 5 TO 15 KNOTS. PATCHY FOG. WAVES
CALM TO 2 FEET.
TODAY
EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST IN THE
AFTERNOON, THEN BACKING EAST LATE. PATCHY FOG THROUGH EARLY
AFTERNOON. WAVES CALM TO 2 FEET.
TONIGHT
SOUTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
SUNDAY
SOUTH WINDS 5 TO 15 KNOTS DIMINISHING TO LESS THAN
10 KNOTS IN THE AFTERNOON, THEN BACKING NORTHEAST LATE. WAVES
CALM TO 2 FEET.
SUNDAY NIGHT
NORTH WINDS LESS THAN 10 KNOTS BECOMING NORTHWEST
5 TO 15 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
MONDAY
NORTH WINDS 5 TO 15 KNOTS. 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. A CHANCE OF SHOWERS. WAVES BUILDING TO 1 TO 3 FEET.
WEDNESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET, THEN BUILDING TO
1 TO 3 FEET.
LSZ267-262000-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
401 AM EDT SAT SEP 26 2026
EARLY THIS MORNING
NORTHEAST WINDS LESS THAN 10 KNOTS. PATCHY
FOG. WAVES CALM TO 2 FEET.
TODAY
EAST WINDS 5 TO 15 KNOTS BACKING NORTHEAST LATE. PATCHY
FOG THROUGH EARLY AFTERNOON. WAVES CALM TO 2 FEET.
TONIGHT
EAST WINDS 5 TO 15 KNOTS VEERING SOUTH LATE. WAVES
CALM TO 2 FEET.
SUNDAY
SOUTHEAST WINDS 5 TO 15 KNOTS DIMINISHING TO LESS THAN
10 KNOTS IN THE AFTERNOON, THEN BECOMING NORTHEAST 5 TO 15 KNOTS
LATE. WAVES CALM TO 2 FEET.
SUNDAY NIGHT
NORTH WINDS 5 TO 15 KNOTS BACKING NORTHWEST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
MONDAY
NORTH WINDS 5 TO 15 KNOTS BACKING NORTHWEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
MONDAY NIGHT
NORTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
TUESDAY
SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS. A CHANCE OF SHOWERS. WAVES BUILDING TO 1 TO 3 FEET,
THEN SUBSIDING TO CALM TO 2 FEET.
WEDNESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH. A
CHANCE OF SHOWERS. WAVES BUILDING TO 1 TO 3 FEET.
LSZ261-261400-
MAFOR 2609/
SUPERIOR WEST 11200 12300 11200 12210 12410. WAVES 2 FEET OR
LESS.
SUPERIOR NORTH CENTRAL 11200 11300 14310 11310 11410. WAVES 2
FEET OR LESS.
SUPERIOR SOUTH CENTRAL 12300 11310 12220 11320 11310 11410. WAVES
2 FEET OR LESS.
SUPERIOR EAST 15200 12300. 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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