893
FZUS63 KMQT 260801
GLFLS
OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
400 AM EDT FRI JUN 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 30.1 INCH HIGH REMAINS OVER LAKE SUPERIOR TODAY INTO SUNDAY
MORNING. MEANWHILE, BROAD LOW PRESSURE OF AT LEAST 29.5 INCHES
DEEPENS IN THE HIGH PLAINS TODAY AND SATURDAY. BY SUNDAY AFTERNOON,
THE HIGH OVER LAKE SUPERIOR RETREATS EASTWARD BUT KEEPS 30.0 INCH
RIDGING OVER THE UPPER GREAT LAKES WHILE THE LOW PRESSURE REMAINS
OVER THE PLAINS. THE HIGH PRESSURE THEN SHIFTS OVER TO LAKE ONTARIO
BY MONDAY MORNING AS THE NOW 29.4 INCH LOW PRESSURE CONSOLIDATES
OVER SOUTH DAKOTA. THROUGH MONDAY AND TUESDAY, THIS LOW SLIDES NORTH
TO LAKE WINNIPEG WHILE THE 30.1 INCH HIGH SHIFTS OFF THE EAST COAST.
THIS PROGRESSIVELY STRENGTHENS TROUGHING OVER LAKE SUPERIOR TO 29.8
INCHES BY MONDAY EVENING, REMAINING THAT WAY UNTIL TUESDAY MORNING.
A SHORTWAVE LOW LIFTING FROM COLORADO THEN DEEPENS THE TROUGHING
OVER LAKE SUPERIOR TO 29.7 INCHES BY TUESDAY EVENING AS IT HEADS
TOWARD NORTHERN ONTARIO. WITH A 30.1 INCH HIGH DEVELOPING OVER THE
SOUTHEASTERN U.S. ON WEDNESDAY, WE COULD SEE 29.9 INCH RIDGING
RETURN OVER LAKE SUPERIOR LATE IN THE DAY.
LSZ162-262000-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
400 AM EDT FRI JUN 26 2026 /300 AM CDT FRI JUN 26 2026/
EARLY THIS MORNING
NORTH WINDS LESS THAN 10 KNOTS. PATCHY FOG.
WAVES CALM TO 2 FEET.
TODAY
NORTH WINDS LESS THAN 10 KNOTS INCREASING TO 5 TO
15 KNOTS IN THE AFTERNOON, THEN VEERING NORTHEAST LATE. PATCHY
FOG THROUGH EARLY AFTERNOON. WAVES CALM TO 2 FEET.
TONIGHT
EAST WINDS 5 TO 15 KNOTS BACKING NORTHEAST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
SATURDAY
EAST WINDS 5 TO 15 KNOTS BECOMING NORTHEAST 10 TO
20 KNOTS IN THE AFTERNOON. WAVES CALM TO 2 FEET.
SATURDAY NIGHT
NORTHEAST WINDS 10 TO 20 KNOTS VEERING EAST
AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT. WAVES
BUILDING TO 1 TO 3 FEET, THEN SUBSIDING TO CALM TO 2 FEET.
SUNDAY
EAST WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 15 TO
25 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS. WAVES BUILDING TO
2 TO 4 FEET.
SUNDAY NIGHT
EAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS THROUGH MIDNIGHT. A
CHANCE OF THUNDERSTORMS. SHOWERS LIKELY AFTER MIDNIGHT. WAVES
2 TO 4 FEET.
MONDAY
NORTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES SUBSIDING
TO 1 TO 3 FEET, THEN BUILDING TO 2 TO 4 FEET.
TUESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES SUBSIDING
TO 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-
400 AM EDT FRI JUN 26 2026
EARLY THIS MORNING
SOUTHWEST WINDS 5 TO 15 KNOTS. PATCHY FOG.
WAVES CALM TO 2 FEET.
TODAY
SOUTHWEST WINDS LESS THAN 10 KNOTS INCREASING TO 5 TO
15 KNOTS IN THE AFTERNOON, THEN BACKING NORTHEAST LATE. PATCHY
FOG THROUGH EARLY AFTERNOON. WAVES CALM TO 2 FEET.
TONIGHT
EAST WINDS 5 TO 15 KNOTS DIMINISHING TO LESS THAN
10 KNOTS LATE. WAVES CALM TO 2 FEET.
SATURDAY
EAST WINDS 5 TO 15 KNOTS BACKING NORTHEAST IN THE
AFTERNOON, THEN INCREASING TO 10 TO 20 KNOTS LATE. WAVES CALM TO
2 FEET.
SATURDAY NIGHT
EAST WINDS 10 TO 20 KNOTS BECOMING SOUTHEAST
5 TO 15 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET, THEN
SUBSIDING TO CALM TO 2 FEET.
SUNDAY
EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
BY MID AFTERNOON. A CHANCE OF SHOWERS. WAVES BUILDING TO 2 TO
4 FEET.
SUNDAY NIGHT
EAST WINDS 15 TO 25 KNOTS BECOMING SOUTHEAST
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES BUILDING TO 3 TO 5 FEET OCCASIONALLY TO
7 FEET, THEN SUBSIDING TO 2 TO 4 FEET.
MONDAY
EAST WINDS 10 TO 20 KNOTS VEERING SOUTHWEST. A CHANCE
OF SHOWERS. WAVES BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET,
THEN SUBSIDING TO 2 TO 4 FEET.
TUESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES SUBSIDING
TO 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-
400 AM EDT FRI JUN 26 2026
EARLY THIS MORNING
WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
TODAY
WEST WINDS LESS THAN 10 KNOTS BACKING SOUTHWEST IN THE
AFTERNOON. WAVES CALM TO 2 FEET.
TONIGHT
EAST WINDS LESS THAN 10 KNOTS VEERING SOUTHEAST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
SATURDAY
EAST WINDS LESS THAN 10 KNOTS INCREASING TO 5 TO
15 KNOTS IN THE AFTERNOON. WAVES CALM TO 2 FEET.
SATURDAY NIGHT
SOUTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
SUNDAY
EAST WINDS 5 TO 15 KNOTS INCREASING TO 15 TO 25 KNOTS
BY MID AFTERNOON. WAVES BUILDING TO 2 TO 4 FEET.
SUNDAY NIGHT
SOUTHEAST WINDS 15 TO 25 KNOTS. A CHANCE OF
SHOWERS. WAVES BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET,
THEN SUBSIDING TO 2 TO 4 FEET.
MONDAY
SOUTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. A CHANCE OF SHOWERS. WAVES BUILDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET, THEN SUBSIDING TO 2 TO 4 FEET.
TUESDAY
SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH. A CHANCE
OF SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
LSZ265-262000-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
400 AM EDT FRI JUN 26 2026
EARLY THIS MORNING
WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
TODAY
WEST WINDS 5 TO 15 KNOTS BACKING EAST IN THE AFTERNOON.
WAVES CALM TO 2 FEET.
TONIGHT
EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
SATURDAY
EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
SATURDAY NIGHT
SOUTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
SUNDAY
EAST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO 30 KNOTS
BY MID AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET OCCASIONALLY TO
7 FEET.
SUNDAY NIGHT
SOUTHEAST WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES
SUBSIDING TO 2 TO 4 FEET, THEN BUILDING TO 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
MONDAY
SOUTHEAST WINDS 20 TO 30 KNOTS BECOMING SOUTH 15 TO
25 KNOTS. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES BUILDING
TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET, THEN SUBSIDING TO 1 TO
3 FEET.
TUESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF SHOWERS.
WAVES SUBSIDING TO 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-
400 AM EDT FRI JUN 26 2026
EARLY THIS MORNING
WEST WINDS 5 TO 15 KNOTS. PATCHY FOG. WAVES
CALM TO 2 FEET.
TODAY
WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST IN THE
AFTERNOON, THEN BECOMING NORTH LESS THAN 10 KNOTS LATE. PATCHY
FOG. WAVES CALM TO 2 FEET.
TONIGHT
EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST AFTER
MIDNIGHT, THEN BACKING NORTH LATE. WAVES CALM TO 2 FEET.
SATURDAY
EAST WINDS 5 TO 15 KNOTS DIMINISHING TO LESS THAN
10 KNOTS LATE. WAVES CALM TO 2 FEET.
SATURDAY NIGHT
EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
SUNDAY
SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING EAST 15 TO
25 KNOTS BY MID AFTERNOON. WAVES BUILDING TO 2 TO 4 FEET.
SUNDAY NIGHT
SOUTHEAST WINDS 15 TO 25 KNOTS. A CHANCE OF
SHOWERS. WAVES BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
MONDAY
SOUTHEAST WINDS 20 TO 30 KNOTS BECOMING SOUTH 15 TO
25 KNOTS. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES BUILDING
TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
TUESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH. A CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES SUBSIDING TO CALM TO 2 FEET.
LSZ267-262000-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
400 AM EDT FRI JUN 26 2026
EARLY THIS MORNING
WEST WINDS 5 TO 15 KNOTS. AREAS OF DENSE
FOG. WAVES CALM TO 2 FEET.
TODAY
NORTHWEST WINDS 5 TO 15 KNOTS BACKING WEST IN THE
AFTERNOON, THEN VEERING NORTHWEST LATE. PATCHY FOG. WAVES CALM TO
2 FEET.
TONIGHT
NORTH WINDS 5 TO 15 KNOTS BACKING WEST AFTER MIDNIGHT,
THEN VEERING NORTHWEST LATE. WAVES CALM TO 2 FEET.
SATURDAY
NORTH WINDS 5 TO 15 KNOTS BACKING NORTHWEST IN THE
AFTERNOON, THEN VEERING NORTH LATE. WAVES CALM TO 2 FEET.
SATURDAY NIGHT
SOUTHEAST WINDS LESS THAN 10 KNOTS INCREASING
TO 5 TO 15 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
SUNDAY
EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
BY MID AFTERNOON. WAVES CALM TO 2 FEET.
SUNDAY NIGHT
SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES
BUILDING TO 2 TO 4 FEET.
MONDAY
SOUTHEAST WINDS 15 TO 25 KNOTS. A CHANCE OF SHOWERS.
WAVES BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET, THEN
SUBSIDING TO 2 TO 4 FEET.
TUESDAY
SOUTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES SUBSIDING
TO CALM TO 2 FEET.
LSZ261-261400-
MAFOR 2609/
SUPERIOR WEST 12600 11800 12100 11210 12200. WAVES 1 FOOT OR
LESS.
SUPERIOR NORTH CENTRAL 13600 11500 11600 11200 12300. WAVES 1
FOOT OR LESS.
SUPERIOR SOUTH CENTRAL 11600 19604 12600 13200 12300. WAVES 1
FOOT OR LESS.
SUPERIOR EAST 11604 11700 12600 11700 11100 11400 11600. 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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