944
FZUS63 KMQT 070201
GLFLS
OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
1001 PM EDT TUE MAY 6 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
RIDGING BUILDS IN TONIGHT THANKS TO A 30.5 INCH HIGH
TRAVERSING ONTARIO THROUGH THURSDAY NIGHT. RIDGING OVER LAKE
SUPERIOR WILL BUILD TO 30.4 INCHES LATE WEDNESDAY, THEN SLOWLY
WEAKEN INTO FRIDAY AS A 30.1 INCH TROUGH APPROACHES FROM THE WEST.
THIS TROUGH WILL PASS OVER LAKE SUPERIOR FRIDAY NIGHT, QUICKLY
REPLACED BY HIGH PRESSURE RIDGING AT 30.3 INCHES FOR SATURDAY AND
SATURDAY NIGHT AS A 30.4 INCH HIGH TRACKS EAST OVER ONTARIO. RIDGING
WEAKENS TO 30.0 INCHES ON SUNDAY AS TROUGHING DEVELOPS TO THE
NORTHWEST.
LSZ162-070800-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
1001 PM EDT TUE MAY 6 2025 /901 PM CDT TUE MAY 6 2025/
REST OF TONIGHT
NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS LATE. A SLIGHT CHANCE OF RAIN SHOWERS. WAVES 2 TO
4 FEET.
WEDNESDAY
NORTHEAST WINDS 10 TO 20 KNOTS VEERING EAST IN THE
AFTERNOON. WAVES 2 TO 4 FEET.
WEDNESDAY NIGHT
NORTHEAST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING
TO CALM TO 2 FEET.
THURSDAY
EAST WINDS 5 TO 15 KNOTS BACKING NORTHEAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
THURSDAY NIGHT
NORTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
FRIDAY
SOUTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
FRIDAY NIGHT
NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
SATURDAY
EAST WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.
SUNDAY
SOUTH WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.
LSZ263-070800-
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 TUE MAY 6 2025
REST OF TONIGHT
NORTH WINDS 20 TO 30 KNOTS BECOMING NORTHEAST
15 TO 25 KNOTS AFTER MIDNIGHT, THEN DIMINISHING TO 10 TO 20 KNOTS
LATE. A SLIGHT CHANCE OF RAIN SHOWERS. WAVES 3 TO 6 FEET
OCCASIONALLY TO 8 FEET SUBSIDING TO 2 TO 4 FEET.
WEDNESDAY
NORTHEAST WINDS 10 TO 20 KNOTS VEERING EAST LATE.
WAVES 2 TO 4 FEET.
WEDNESDAY NIGHT
EAST WINDS 5 TO 15 KNOTS BACKING NORTHEAST
AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
THURSDAY
EAST WINDS 5 TO 15 KNOTS BACKING NORTHEAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
THURSDAY NIGHT
EAST WINDS 5 TO 15 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
FRIDAY
SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 2 TO
4 FEET.
FRIDAY NIGHT
WEST WINDS 5 TO 15 KNOTS BECOMING NORTH 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
SATURDAY
NORTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH. WAVES
SUBSIDING TO CALM TO 2 FEET.
SUNDAY
SOUTH WINDS 5 TO 15 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.
LSZ264-070800-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
1001 PM EDT TUE MAY 6 2025
REST OF TONIGHT
NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS.
WAVES 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
WEDNESDAY
NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.
WEDNESDAY NIGHT
NORTH WINDS 5 TO 15 KNOTS VEERING EAST LATE.
WAVES CALM TO 2 FEET.
THURSDAY
EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
THURSDAY NIGHT
SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
FRIDAY
SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 2 TO
4 FEET, THEN SUBSIDING TO 1 TO 3 FEET.
FRIDAY NIGHT
WEST WINDS 5 TO 15 KNOTS BECOMING NORTH 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES 1 TO 3 FEET.
SATURDAY
NORTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH. WAVES
SUBSIDING TO CALM TO 2 FEET.
SUNDAY
SOUTH WINDS 5 TO 15 KNOTS. WAVES BUILDING TO 2 TO
4 FEET.
LSZ265-070800-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
1001 PM EDT TUE MAY 6 2025
REST OF TONIGHT
NORTH WINDS 15 TO 25 KNOTS. A SLIGHT CHANCE OF
RAIN SHOWERS. WAVES 2 TO 4 FEET BUILDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET.
WEDNESDAY
NORTHEAST WINDS 20 TO 30 KNOTS BECOMING NORTH 15 TO
25 KNOTS IN THE AFTERNOON, THEN DIMINISHING TO 10 TO 20 KNOTS
LATE. WAVES SUBSIDING TO 2 TO 4 FEET.
WEDNESDAY NIGHT
NORTH WINDS 5 TO 15 KNOTS BECOMING NORTHEAST
10 TO 20 KNOTS AFTER MIDNIGHT, THEN BECOMING EAST 5 TO 15 KNOTS
LATE. WAVES SUBSIDING TO CALM TO 2 FEET.
THURSDAY
EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
THURSDAY NIGHT
SOUTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
FRIDAY
SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING SOUTH 10 TO
20 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
FRIDAY NIGHT
SOUTH WINDS 10 TO 20 KNOTS BACKING NORTH AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
SATURDAY
NORTH WINDS 10 TO 20 KNOTS BECOMING SOUTH 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.
SUNDAY
SOUTH WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
LSZ266-070800-
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 TUE MAY 6 2025
REST OF TONIGHT
NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS LATE. A SLIGHT CHANCE OF RAIN SHOWERS. WAVES 3 TO
6 FEET OCCASIONALLY TO 8 FEET.
WEDNESDAY
NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS IN THE AFTERNOON. WAVES SUBSIDING TO 2 TO 4 FEET.
WEDNESDAY NIGHT
NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST
AFTER MIDNIGHT, THEN BECOMING EAST 5 TO 15 KNOTS LATE. WAVES
SUBSIDING TO 1 TO 3 FEET.
THURSDAY
EAST WINDS 5 TO 15 KNOTS BACKING NORTH BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
THURSDAY NIGHT
SOUTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
FRIDAY
SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
FRIDAY NIGHT
SOUTH WINDS 10 TO 20 KNOTS BACKING NORTH AFTER
MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
SATURDAY
NORTH WINDS 10 TO 20 KNOTS BECOMING SOUTH 5 TO
15 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.
SUNDAY
SOUTH WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.
LSZ267-070800-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
1001 PM EDT TUE MAY 6 2025
REST OF TONIGHT
NORTHWEST WINDS 10 TO 20 KNOTS BECOMING NORTH
15 TO 25 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS.
WAVES CALM TO 2 FEET BUILDING TO 3 TO 5 FEET OCCASIONALLY TO
7 FEET.
WEDNESDAY
NORTHEAST WINDS 15 TO 25 KNOTS BACKING NORTH IN THE
AFTERNOON, THEN DIMINISHING TO 10 TO 20 KNOTS LATE. WAVES
BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET, THEN SUBSIDING TO
2 TO 4 FEET.
WEDNESDAY NIGHT
NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST
AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET, THEN BUILDING TO
2 TO 4 FEET.
THURSDAY
NORTHEAST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST
5 TO 15 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
THURSDAY NIGHT
NORTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
FRIDAY
SOUTH WINDS 5 TO 15 KNOTS BACKING SOUTHEAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
FRIDAY NIGHT
SOUTH WINDS 10 TO 20 KNOTS BACKING NORTH AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
SATURDAY
NORTH WINDS 10 TO 20 KNOTS VEERING SOUTHEAST. WAVES
CALM TO 2 FEET.
SUNDAY
SOUTH WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.
LSZ261-070800-
MAFOR 0703/
SUPERIOR WEST 11130 14120 11220 11210 11110. WAVES 2 TO 4 FEET
BUILDING TO 3 TO 5 FEET, THEN SUBSIDING TO 2 TO 4 FEET OVERNIGHT.
WAVES 2 TO 4 FEET WEDNESDAY. WAVES 1 TO 3 FEET WEDNESDAY EVENING.
SUPERIOR NORTH CENTRAL 11840 12830 11130 12120 12810. WAVES 3 TO
6 FEET OVERNIGHT. WAVES 3 TO 5 FEET SUBSIDING TO 2 TO 4 FEET
WEDNESDAY. WAVES 1 TO 3 FEET WEDNESDAY EVENING.
SUPERIOR SOUTH CENTRAL 11840 12830 11130 12820 12810. WAVES 2 TO
4 FEET BUILDING TO 4 TO 7 FEET OVERNIGHT. WAVES 3 TO 6 FEET
WEDNESDAY. WAVES 2 TO 4 FEET WEDNESDAY EVENING.
SUPERIOR EAST 11820 12830 12130 13820. WAVES 1 TO 3 FEET BUILDING
TO 3 TO 5 FEET OVERNIGHT. WAVES 3 TO 5 FEET SUBSIDING TO 2 TO 4
FEET WEDNESDAY. WAVES 2 TO 3 FEET WEDNESDAY EVENING.
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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