548
FZUS63 KMQT 300201
GLFLS
OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
1001 PM EDT THU MAY 29 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
A 29.7 INCH TROUGH MOVES SOUTHWARD ACROSS LAKE SUPERIOR
EARLY FRIDAY, FOLLOWED BY A 29.9 INCH RIDGE BUILDING IN ON SATURDAY.
29.9 INCH RIDGING WILL PERSIST INTO NEXT WEEK. 29.7 INCH TROUGHING
MOVES INTO LAKE SUPERIOR TUESDAY BEFORE A ~29.6 INCH LOW MOVES
NORTHEAST FROM THE PLAINS INTO THE WESTERN GREAT LAKES WEDNESDAY.
LSZ162-300800-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
1001 PM EDT THU MAY 29 2025 /901 PM CDT THU MAY 29 2025/
REST OF TONIGHT
WEST WINDS 10 TO 20 KNOTS. AREAS OF SMOKE. A
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT. WAVES
CALM TO 2 FEET.
FRIDAY
WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO 20 KNOTS
IN THE AFTERNOON, THEN BACKING EAST LATE. AREAS OF SMOKE. A
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
FRIDAY NIGHT
NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTHWEST
AFTER MIDNIGHT, THEN VEERING NORTH LATE. PATCHY SMOKE THROUGH
MIDNIGHT. WAVES CALM TO 2 FEET.
SATURDAY
EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
SATURDAY NIGHT
NORTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
SUNDAY
SOUTHEAST WINDS 5 TO 15 KNOTS BACKING EAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
SUNDAY NIGHT
NORTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
MONDAY
SOUTH WINDS 10 TO 20 KNOTS. A CHANCE OF SHOWERS. WAVES
CALM TO 2 FEET.
TUESDAY
NORTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS. SHOWERS LIKELY. WAVES CALM TO 2 FEET.
LSZ263-300800-
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 THU MAY 29 2025
REST OF TONIGHT
WEST WINDS 10 TO 20 KNOTS. AREAS OF SMOKE. A
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT. WAVES
1 TO 3 FEET SUBSIDING TO CALM TO 2 FEET.
FRIDAY
WEST WINDS 10 TO 20 KNOTS BECOMING NORTH 5 TO 15 KNOTS
IN THE AFTERNOON, THEN VEERING EAST LATE. A SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS THROUGH EARLY AFTERNOON. AREAS OF
SMOKE. WAVES CALM TO 2 FEET.
FRIDAY NIGHT
NORTH WINDS 5 TO 15 KNOTS BACKING NORTHWEST AFTER
MIDNIGHT, THEN BECOMING NORTH LESS THAN 10 KNOTS LATE. WAVES CALM
TO 2 FEET.
SATURDAY
NORTHEAST WINDS 5 TO 15 KNOTS VEERING EAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
SATURDAY NIGHT
NORTHWEST WINDS 5 TO 15 KNOTS DIMINISHING TO
LESS THAN 10 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
SUNDAY
SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
SUNDAY NIGHT
SOUTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
MONDAY
SOUTH WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS. WAVES
CALM TO 2 FEET.
TUESDAY
SOUTH WINDS 10 TO 20 KNOTS BACKING EAST. A CHANCE OF
SHOWERS. SHOWERS LIKELY. WAVES BUILDING TO 2 TO 4 FEET.
LSZ264-300800-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
1001 PM EDT THU MAY 29 2025
REST OF TONIGHT
SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST
AFTER MIDNIGHT, THEN DIMINISHING TO 5 TO 15 KNOTS LATE. AREAS OF
SMOKE. A SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT. WAVES CALM TO
2 FEET.
FRIDAY
NORTHWEST WINDS 5 TO 15 KNOTS VEERING NORTH IN THE
AFTERNOON. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH
EARLY AFTERNOON. AREAS OF SMOKE. WAVES CALM TO 2 FEET.
FRIDAY NIGHT
NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
SATURDAY
NORTH WINDS 5 TO 15 KNOTS BACKING WEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
SATURDAY NIGHT
NORTHWEST WINDS 5 TO 15 KNOTS BECOMING NORTH
LESS THAN 10 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
SUNDAY
NORTH WINDS 5 TO 15 KNOTS BACKING SOUTHWEST 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. A CHANCE OF SHOWERS. WAVES
CALM TO 2 FEET.
TUESDAY
SOUTH WINDS 10 TO 20 KNOTS BACKING EAST. A CHANCE OF
SHOWERS, THEN SHOWERS LIKELY. WAVES BUILDING TO 2 TO 4 FEET.
LSZ265-300800-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
1001 PM EDT THU MAY 29 2025
REST OF TONIGHT
WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS LATE. AREAS OF SMOKE AFTER MIDNIGHT. A CHANCE OF SHOWERS
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
FRIDAY
WEST WINDS 10 TO 20 KNOTS VEERING NORTH LATE. A CHANCE
OF SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS THROUGH EARLY
AFTERNOON. AREAS OF SMOKE. WAVES CALM TO 2 FEET.
FRIDAY NIGHT
NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST
5 TO 15 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
SATURDAY
NORTH WINDS 5 TO 15 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
SATURDAY NIGHT
WEST WINDS 5 TO 15 KNOTS VEERING NORTHWEST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
SUNDAY
NORTHWEST WINDS 5 TO 15 KNOTS VEERING EAST 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
SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH. WAVES
CALM TO 2 FEET.
TUESDAY
SOUTHEAST WINDS 15 TO 25 KNOTS VEERING SOUTH. A CHANCE
OF SHOWERS, THEN SHOWERS LIKELY. WAVES CALM TO 2 FEET.
LSZ266-300800-
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 THU MAY 29 2025
REST OF TONIGHT
WEST WINDS 10 TO 20 KNOTS. AREAS OF SMOKE
AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT.
WAVES CALM TO 2 FEET.
FRIDAY
NORTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS IN THE AFTERNOON. A CHANCE OF SHOWERS AND A SLIGHT
CHANCE OF THUNDERSTORMS THROUGH EARLY AFTERNOON. AREAS OF SMOKE.
WAVES CALM TO 2 FEET.
FRIDAY NIGHT
NORTH WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
SATURDAY
NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
SATURDAY NIGHT
NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO
5 TO 15 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
SUNDAY
NORTHWEST WINDS 5 TO 15 KNOTS BACKING WEST 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
SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH. WAVES
CALM TO 2 FEET.
TUESDAY
SOUTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS. A CHANCE OF SHOWERS, THEN SHOWERS LIKELY. WAVES CALM TO
2 FEET.
LSZ267-300800-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
1001 PM EDT THU MAY 29 2025
REST OF TONIGHT
SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST
LATE. AREAS OF SMOKE AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
FRIDAY
NORTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS IN THE AFTERNOON. A CHANCE OF RAIN SHOWERS AND A SLIGHT
CHANCE OF THUNDERSTORMS THROUGH EARLY AFTERNOON. AREAS OF SMOKE.
WAVES CALM TO 2 FEET.
FRIDAY NIGHT
NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
SATURDAY
NORTHWEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
SATURDAY NIGHT
NORTHWEST WINDS 10 TO 20 KNOTS. WAVES CALM TO
2 FEET.
SUNDAY
NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
SUNDAY NIGHT
WEST WINDS 5 TO 15 KNOTS BACKING SOUTH AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
MONDAY
SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH. WAVES
CALM TO 2 FEET.
TUESDAY
SOUTH WINDS 15 TO 25 KNOTS. A CHANCE OF SHOWERS. WAVES
CALM TO 2 FEET.
LSZ261-300800-
MAFOR 3003/
SUPERIOR WEST 14620 11610 11410 11310 11200. A CHANCE OF SHOWERS
FRIDAY MORNING. WAVES OMITTED DUE TO THE LAKE BEING MOSTLY ICE
COVERED.
SUPERIOR NORTH CENTRAL 13620 13720 11820 11810. WAVES OMITTED DUE
TO THE LAKE BEING MOSTLY ICE COVERED.
SUPERIOR SOUTH CENTRAL 14620 13720 11710. A CHANCE OF SHOWERS
FRIDAY MORNING. WAVES OMITTED DUE TO THE LAKE BEING MOSTLY ICE
COVERED.
SUPERIOR EAST 12510 11610 11710 11720 12730 11820. A CHANCE OF
SHOWERS FRIDAY MORNING. WAVES OMITTED DUE TO THE LAKE BEING
MOSTLY ICE COVERED.
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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