511
FZUS63 KMQT 310202
GLFLS
OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
1001 PM EDT FRI MAY 30 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
29.8 INCH RIDGING BUILDS TO TODAY, PERSISTING OVER
LAKE SUPERIOR THROUGH SUNDAY. TROUGHING ACROSS THE PLAINS AROUND
29.7 INCHES MOVES EASTWARD INTO LAKE SUPERIOR MONDAY MORNING BEFORE
A 29.6 INCH LOW MOVES NORTHEAST FROM THE PLAINS INTO THE WESTERN
GREAT LAKES TUESDAY INTO WEDNESDAY. EXPECT A COLD FRONTAL PASSAGE
ASSOCIATED WITH THAT LOW PRESSURE ON TUESDAY. 30.0 INCH HIGH
PRESSURE BUILDS BEHIND THE DEPARTING LOW PRESSURE INTO THE LATE WEEK.
LSZ162-310800-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
1001 PM EDT FRI MAY 30 2025 /901 PM CDT FRI MAY 30 2025/
REST OF TONIGHT
NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
SATURDAY
NORTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST IN
THE AFTERNOON, THEN BACKING EAST LATE. WAVES CALM TO 2 FEET.
SATURDAY NIGHT
EAST WINDS 5 TO 15 KNOTS BACKING NORTHEAST
AFTER MIDNIGHT, THEN BACKING NORTHWEST LATE. WAVES CALM TO
2 FEET.
SUNDAY
SOUTH WINDS 5 TO 15 KNOTS BACKING EAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
SUNDAY NIGHT
NORTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
MONDAY
SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING SOUTH 10 TO
20 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
MONDAY NIGHT
SOUTH WINDS 10 TO 20 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. A CHANCE OF SHOWERS THROUGH MIDNIGHT. SHOWERS
LIKELY AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
TUESDAY
NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST. SHOWERS,
THEN A CHANCE OF SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
WEDNESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.
LSZ263-310800-
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 FRI MAY 30 2025
REST OF TONIGHT
NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTH
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
SATURDAY
NORTH WINDS 5 TO 15 KNOTS VEERING NORTHEAST IN THE
AFTERNOON, THEN VEERING SOUTHWEST LATE. WAVES CALM TO 2 FEET.
SATURDAY NIGHT
WEST WINDS 5 TO 15 KNOTS BECOMING NORTHWEST
LESS THAN 10 KNOTS LATE. WAVES CALM TO 2 FEET.
SUNDAY
SOUTH WINDS LESS THAN 10 KNOTS INCREASING TO 5 TO
15 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
SUNDAY NIGHT
SOUTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
MONDAY
SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
MONDAY NIGHT
SOUTH WINDS 10 TO 20 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES BUILDING TO 2 TO
4 FEET.
TUESDAY
SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST. SHOWERS
LIKELY. A CHANCE OF SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
WEDNESDAY
WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
LSZ264-310800-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
1001 PM EDT FRI MAY 30 2025
REST OF TONIGHT
NORTH WINDS 5 TO 15 KNOTS BACKING NORTHWEST
LATE. WAVES CALM TO 2 FEET.
SATURDAY
NORTH WINDS 5 TO 15 KNOTS BACKING WEST LATE. WAVES
CALM TO 2 FEET.
SATURDAY NIGHT
WEST WINDS 5 TO 15 KNOTS VEERING NORTHWEST
AFTER MIDNIGHT, THEN BECOMING NORTH LESS THAN 10 KNOTS LATE.
WAVES CALM TO 2 FEET.
SUNDAY
NORTHWEST WINDS LESS THAN 10 KNOTS BECOMING SOUTHWEST
5 TO 15 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
SUNDAY NIGHT
SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
MONDAY
SOUTH WINDS 5 TO 15 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.
MONDAY NIGHT
SOUTH WINDS 10 TO 20 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES BUILDING TO 2 TO
4 FEET.
TUESDAY
SOUTHWEST WINDS 5 TO 15 KNOTS VEERING NORTHWEST.
SHOWERS LIKELY, THEN A CHANCE OF SHOWERS. WAVES SUBSIDING TO 1 TO
3 FEET.
WEDNESDAY
WEST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO CALM TO
2 FEET.
LSZ265-310800-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
1001 PM EDT FRI MAY 30 2025
REST OF TONIGHT
NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST
AFTER MIDNIGHT. WAVES 1 TO 3 FEET SUBSIDING TO CALM TO 2 FEET.
SATURDAY
NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH IN THE
AFTERNOON, THEN BACKING NORTHWEST LATE. WAVES CALM TO 2 FEET.
SATURDAY NIGHT
NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO
5 TO 15 KNOTS LATE. WAVES CALM TO 2 FEET.
SUNDAY
NORTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
SUNDAY NIGHT
SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
MONDAY
SOUTH WINDS 10 TO 20 KNOTS BACKING SOUTHEAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
MONDAY NIGHT
SOUTH WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
TUESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST. SHOWERS
LIKELY. WAVES CALM TO 2 FEET.
WEDNESDAY
NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST. A
CHANCE OF SHOWERS. WAVES CALM TO 2 FEET.
LSZ266-310800-
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 FRI MAY 30 2025
REST OF TONIGHT
NORTH WINDS 15 TO 25 KNOTS BACKING NORTHWEST
AFTER MIDNIGHT, THEN DIMINISHING TO 10 TO 20 KNOTS LATE. WAVES
3 TO 5 FEET OCCASIONALLY TO 7 FEET SUBSIDING TO CALM TO 2 FEET.
SATURDAY
NORTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS LATE. WAVES BUILDING TO 2 TO 4 FEET.
SATURDAY NIGHT
NORTHWEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING
TO CALM TO 2 FEET.
SUNDAY
NORTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS BY MID AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET, THEN
SUBSIDING TO CALM TO 2 FEET.
SUNDAY NIGHT
SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
MONDAY
SOUTH WINDS 10 TO 20 KNOTS BACKING SOUTHEAST BY MID
AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
MONDAY NIGHT
SOUTH WINDS 15 TO 25 KNOTS. WAVES BUILDING TO
3 TO 5 FEET OCCASIONALLY TO 7 FEET.
TUESDAY
SOUTH WINDS 15 TO 25 KNOTS VEERING WEST. A CHANCE OF
SHOWERS, THEN SHOWERS LIKELY. WAVES SUBSIDING TO 2 TO 4 FEET.
WEDNESDAY
NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST. A
CHANCE OF RAIN SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
LSZ267-310800-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
1001 PM EDT FRI MAY 30 2025
REST OF TONIGHT
NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT, THEN BACKING NORTHWEST LATE. WAVES
3 TO 5 FEET OCCASIONALLY TO 7 FEET SUBSIDING TO CALM TO 2 FEET.
SATURDAY
NORTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 20 TO
30 KNOTS. WAVES BUILDING TO 2 TO 4 FEET.
SATURDAY NIGHT
NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
SUNDAY
NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST BY MID
AFTERNOON. WAVES BUILDING TO 2 TO 4 FEET.
SUNDAY NIGHT
WEST WINDS 5 TO 15 KNOTS BACKING SOUTH AFTER
MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
MONDAY
SOUTHEAST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.
MONDAY NIGHT
SOUTH WINDS 15 TO 25 KNOTS. WAVES BUILDING TO
3 TO 5 FEET OCCASIONALLY TO 7 FEET.
TUESDAY
SOUTH WINDS 15 TO 25 KNOTS VEERING SOUTHWEST. A CHANCE
OF SHOWERS, THEN SHOWERS LIKELY. WAVES SUBSIDING TO 2 TO 4 FEET.
WEDNESDAY
NORTHWEST WINDS 10 TO 20 KNOTS. RAIN SHOWERS LIKELY.
WAVES SUBSIDING TO CALM TO 2 FEET.
LSZ261-310800-
MAFOR 3103/
SUPERIOR WEST 13800 11100 11200 11300 11400 11300. WAVES 2 FEET
OR LESS.
SUPERIOR NORTH CENTRAL 11810 12710 11810 12710 12610. WAVES 1 TO
3 FEET.
SUPERIOR SOUTH CENTRAL 11720 14710 11710 11720 11710. WAVES 1 TO
3 FEET.
SUPERIOR EAST 11120 11820 11720 11710 12720 11730 11720. WAVES 2
TO 4 FEET.
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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