423
FZUS63 KMQT 262001
GLFLS
OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
400 PM 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 29.6 INCH LOW PRESSURE OVER THE NORTHERN
ROCKIES THIS AFTERNOON FURTHER DEEPENS TO AT LEAST 29.4 INCHES WHILE
MOVING INTO THE HIGH PLAINS INTO 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 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.
LSZ162-270800-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
400 PM EDT FRI JUN 26 2026 /300 PM CDT FRI JUN 26 2026/
LATE THIS AFTERNOON
NORTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM
TO 2 FEET.
TONIGHT
EAST WINDS 5 TO 15 KNOTS BACKING NORTHEAST AFTER
MIDNIGHT, THEN VEERING EAST LATE. WAVES CALM TO 2 FEET.
SATURDAY
EAST WINDS 5 TO 15 KNOTS BECOMING NORTHEAST 10 TO
20 KNOTS IN THE AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
SATURDAY NIGHT
EAST WINDS 10 TO 20 KNOTS BECOMING NORTHEAST
5 TO 15 KNOTS AFTER MIDNIGHT, THEN INCREASING TO 10 TO 20 KNOTS
LATE. WAVES 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. A SLIGHT CHANCE
OF THUNDERSTORMS BY MID AFTERNOON. WAVES BUILDING TO 2 TO 4 FEET.
SUNDAY NIGHT
EAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. SHOWERS LIKELY AND A CHANCE OF
THUNDERSTORMS. WAVES SUBSIDING TO 1 TO 3 FEET.
MONDAY
NORTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET,
THEN BUILDING TO 1 TO 3 FEET.
MONDAY NIGHT
NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES BUILDING TO 2 TO 4 FEET, THEN SUBSIDING TO
1 TO 3 FEET.
TUESDAY
SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO
20 KNOTS. A CHANCE OF SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
WEDNESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO
2 FEET.
LSZ263-270800-
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 PM EDT FRI JUN 26 2026
LATE THIS AFTERNOON
NORTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM
TO 2 FEET.
TONIGHT
EAST WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST LESS THAN
10 KNOTS LATE. WAVES CALM TO 2 FEET.
SATURDAY
EAST WINDS LESS THAN 10 KNOTS BECOMING NORTHEAST 5 TO
15 KNOTS IN THE AFTERNOON, THEN INCREASING TO 10 TO 20 KNOTS
LATE. WAVES CALM TO 2 FEET.
SATURDAY NIGHT
EAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT, THEN VEERING SOUTHEAST LATE. 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 BY MID AFTERNOON. 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 THROUGH
MIDNIGHT. SHOWERS LIKELY AFTER MIDNIGHT. WAVES 2 TO 4 FEET.
MONDAY
EAST WINDS 10 TO 20 KNOTS. WAVES 2 TO 4 FEET.
MONDAY NIGHT
EAST WINDS 10 TO 20 KNOTS VEERING SOUTH AFTER
MIDNIGHT. A CHANCE OF SHOWERS THROUGH MIDNIGHT. A CHANCE OF
THUNDERSTORMS. SHOWERS LIKELY AFTER MIDNIGHT. WAVES 2 TO 4 FEET.
TUESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF SHOWERS.
WAVES SUBSIDING TO CALM TO 2 FEET, THEN BUILDING TO 1 TO 3 FEET.
WEDNESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF SHOWERS.
WAVES SUBSIDING TO CALM TO 2 FEET, THEN BUILDING TO 1 TO 3 FEET.
LSZ264-270800-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
400 PM EDT FRI JUN 26 2026
LATE THIS AFTERNOON
SOUTH WINDS LESS THAN 10 KNOTS. WAVES CALM
TO 2 FEET.
TONIGHT
SOUTHEAST WINDS LESS THAN 10 KNOTS. 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
EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST
AFTER MIDNIGHT, THEN BACKING EAST LATE. WAVES CALM TO 2 FEET.
SUNDAY
EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS BY MID AFTERNOON.
WAVES BUILDING TO 2 TO 4 FEET.
SUNDAY NIGHT
SOUTHEAST WINDS 15 TO 25 KNOTS. A CHANCE OF
SHOWERS THROUGH MIDNIGHT, THEN SHOWERS LIKELY AFTER MIDNIGHT.
WAVES 2 TO 4 FEET.
MONDAY
SOUTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
MONDAY NIGHT
SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH
AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES BUILDING TO 3 TO
6 FEET OCCASIONALLY TO 8 FEET.
TUESDAY
SOUTH WINDS 10 TO 20 KNOTS VEERING SOUTHWEST. A CHANCE
OF SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET, THEN BUILDING TO
1 TO 3 FEET.
WEDNESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. A CHANCE OF SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
LSZ265-270800-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
400 PM EDT FRI JUN 26 2026
LATE THIS AFTERNOON
EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
TONIGHT
SOUTHEAST WINDS 5 TO 15 KNOTS. PATCHY DENSE FOG AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
SATURDAY
SOUTHEAST WINDS 5 TO 15 KNOTS BACKING EAST IN THE
AFTERNOON. WAVES CALM TO 2 FEET.
SATURDAY NIGHT
SOUTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
SUNDAY
SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING EAST 20 TO
30 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS BY MID
AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
SUNDAY NIGHT
SOUTHEAST WINDS 15 TO 25 KNOTS. A CHANCE OF
SHOWERS THROUGH MIDNIGHT, THEN SHOWERS LIKELY AFTER MIDNIGHT.
WAVES SUBSIDING TO 2 TO 4 FEET, THEN BUILDING TO 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
MONDAY
SOUTHEAST WINDS 15 TO 25 KNOTS. WAVES 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
MONDAY NIGHT
SOUTHEAST WINDS 20 TO 30 KNOTS BECOMING SOUTH
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES
SUBSIDING TO 1 TO 3 FEET.
TUESDAY
SOUTH WINDS 10 TO 20 KNOTS VEERING SOUTHWEST. A CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES SUBSIDING TO CALM TO 2 FEET.
WEDNESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF SHOWERS.
WAVES CALM TO 2 FEET.
LSZ266-270800-
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 PM EDT FRI JUN 26 2026
LATE THIS AFTERNOON
EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
TONIGHT
EAST WINDS LESS THAN 10 KNOTS VEERING SOUTHEAST AFTER
MIDNIGHT. PATCHY DENSE FOG AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
SATURDAY
EAST WINDS 5 TO 15 KNOTS DIMINISHING TO LESS THAN
10 KNOTS IN THE AFTERNOON, THEN INCREASING TO 5 TO 15 KNOTS LATE.
WAVES CALM TO 2 FEET.
SATURDAY NIGHT
EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST
AFTER MIDNIGHT, THEN BACKING EAST LATE. WAVES CALM TO 2 FEET.
SUNDAY
SOUTHEAST WINDS 10 TO 20 KNOTS BACKING EAST BY MID
AFTERNOON. WAVES BUILDING TO 2 TO 4 FEET.
SUNDAY NIGHT
SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS THROUGH
MIDNIGHT, THEN SHOWERS LIKELY AFTER MIDNIGHT. WAVES BUILDING TO
3 TO 5 FEET OCCASIONALLY TO 7 FEET.
MONDAY
SOUTHEAST WINDS 20 TO 30 KNOTS. WAVES 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
MONDAY NIGHT
SOUTHEAST WINDS 20 TO 30 KNOTS BECOMING SOUTH
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES
BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
TUESDAY
SOUTH WINDS 10 TO 20 KNOTS VEERING SOUTHWEST. A CHANCE
OF SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET, THEN BUILDING TO
1 TO 3 FEET.
WEDNESDAY
SOUTHWEST WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS.
WAVES SUBSIDING TO CALM TO 2 FEET.
LSZ267-270800-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
400 PM EDT FRI JUN 26 2026
LATE THIS AFTERNOON
NORTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM
TO 2 FEET.
TONIGHT
EAST WINDS LESS THAN 10 KNOTS VEERING SOUTHEAST AFTER
MIDNIGHT, THEN BECOMING NORTH 5 TO 15 KNOTS LATE. PATCHY FOG
THROUGH MIDNIGHT. WAVES CALM TO 2 FEET.
SATURDAY
NORTHEAST WINDS LESS THAN 10 KNOTS BACKING NORTH IN
THE AFTERNOON, THEN INCREASING TO 5 TO 15 KNOTS LATE. WAVES CALM
TO 2 FEET.
SATURDAY NIGHT
EAST WINDS 5 TO 15 KNOTS DIMINISHING TO LESS
THAN 10 KNOTS AFTER MIDNIGHT, THEN INCREASING TO 5 TO 15 KNOTS
LATE. WAVES CALM TO 2 FEET.
SUNDAY
EAST WINDS 5 TO 15 KNOTS. 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 5 FEET OCCASIONALLY TO 7 FEET.
MONDAY NIGHT
SOUTHEAST WINDS 15 TO 25 KNOTS VEERING SOUTH
AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES SUBSIDING TO 2 TO
4 FEET.
TUESDAY
SOUTH WINDS 10 TO 20 KNOTS. A CHANCE OF SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET, THEN BUILDING TO 1 TO 3 FEET.
WEDNESDAY
SOUTHWEST WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS.
WAVES CALM TO 2 FEET.
LSZ261-270200-
MAFOR 2621/
SUPERIOR WEST 11100 12210 14200 11110. WAVES 1 FOOT OR LESS.
SUPERIOR NORTH CENTRAL 11400 14300 11200 12300. WAVES 1 FOOT OR
LESS.
SUPERIOR SOUTH CENTRAL 11200 13300 11300 19304 11300 11200 11210.
WAVES 1 FOOT OR LESS.
SUPERIOR EAST 11700 11100 11300 11500 11800 12100 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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