098
FZUS63 KMQT 220844
GLFLS
OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
344 AM EST SAT FEB 22 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 29.9 INCH LOW PRESSURE TROUGH OVER THE CANADIAN
PRAIRIES EARLY THIS MORNING WILL SWEEP EAST, REACHING LAKE
SUPERIOR TONIGHT AT 30.0 INCHES. THE TROUGH WILL THEN QUICKLY LIFT
NORTH ON SUNDAY AS 29.2 INCH LOW PRESSURE MOVES OUT OVER THE
PRAIRIE PROVINCES. THE LOW WILL THEN TRACK EAST, REACHING NORTHERN
ONTARIO BY MONDAY MORNING AND NORTHERN QUEBEC DURING MONDAY
NIGHT. ONE ASSOCIATED TROUGH AT 29.4 INCHES WILL CROSS LAKE
SUPERIOR EARLY MONDAY FOLLOWED BY A SECOND AT 29.6 INCHES EARLY ON
TUESDAY. IN ITS WAKE, A WEAK 29.9 INCH HIGH PRESSURE RIDGE WILL
REACH LAKE SUPERIOR LATE TUESDAY INTO TUESDAY EVENING. ANOTHER LOW
PRESSURE TROUGH OF 29.7 INCHES WILL MOVE ACROSS LAKE SUPERIOR ON
WEDNESDAY.
LSZ162-221645-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
344 AM EST SAT FEB 22 2025 /244 AM CST SAT FEB 22 2025/
EARLY THIS MORNING
WEST WINDS 15 TO 25 KNOTS. WAVES 3 TO
6 FEET OCCASIONALLY TO 8 FEET.
TODAY
SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS BY LATE MORNING, THEN BECOMING WEST 10 TO 20 KNOTS BY
MID AFTERNOON. WAVES SUBSIDING TO 3 TO 5 FEET OCCASIONALLY TO
7 FEET.
TONIGHT
WEST WINDS 5 TO 15 KNOTS VEERING NORTHEAST BY
MIDNIGHT, THEN VEERING EAST LATE. WAVES SUBSIDING TO CALM TO
2 FEET.
SUNDAY
SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
SUNDAY NIGHT
SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO
20 TO 30 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS IN THE
EVENING. A CHANCE OF RAIN SHOWERS. WAVES BUILDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET.
MONDAY
WEST WINDS 15 TO 25 KNOTS. WAVES SUBSIDING TO 1 TO
3 FEET.
MONDAY NIGHT
WEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
TUESDAY
WEST WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.
WEDNESDAY
WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST. WAVES
CALM TO 2 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ263-221645-
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-
344 AM EST SAT FEB 22 2025
EARLY THIS MORNING
WEST WINDS 20 TO 30 KNOTS. FREEZING SPRAY.
A SLIGHT CHANCE OF SNOW. WAVES 5 TO 8 FEET OCCASIONALLY TO
10 FEET.
TODAY
WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO 20 KNOTS
BY MID AFTERNOON. A SLIGHT CHANCE OF SNOW IN THE MORNING. WAVES
SUBSIDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
TONIGHT
WEST WINDS 5 TO 15 KNOTS VEERING NORTH BY MIDNIGHT,
THEN VEERING NORTHEAST LATE. WAVES SUBSIDING TO CALM TO 2 FEET.
SUNDAY
SOUTH WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE OF SNOW
SHOWERS. WAVES CALM TO 2 FEET.
SUNDAY NIGHT
SOUTH WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST
15 TO 25 KNOTS AFTER MIDNIGHT. SNOW SHOWERS LIKELY IN THE
EVENING. A CHANCE OF RAIN SHOWERS. A CHANCE OF SNOW SHOWERS AFTER
MIDNIGHT. WAVES BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.
MONDAY
WEST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO 5 TO
8 FEET OCCASIONALLY TO 10 FEET, THEN SUBSIDING TO 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
MONDAY NIGHT
WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
TUESDAY
WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST. WAVES CALM
TO 2 FEET.
WEDNESDAY
WEST WINDS 5 TO 15 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS. WAVES BUILDING TO 1 TO 3 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ264-221645-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
344 AM EST SAT FEB 22 2025
EARLY THIS MORNING
WEST WINDS 15 TO 25 KNOTS. WAVES 6 TO
9 FEET OCCASIONALLY TO 11 FEET.
TODAY
WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO 20 KNOTS
BY MID AFTERNOON. WAVES SUBSIDING TO 3 TO 5 FEET OCCASIONALLY TO
7 FEET.
TONIGHT
NORTHWEST WINDS 5 TO 15 KNOTS VEERING NORTHEAST LATE.
WAVES SUBSIDING TO CALM TO 2 FEET.
SUNDAY
SOUTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH BY LATE
MORNING, THEN INCREASING TO 10 TO 20 KNOTS BY MID AFTERNOON.
WAVES BUILDING TO 2 TO 4 FEET.
SUNDAY NIGHT
SOUTH WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN AND SNOW SHOWERS.
WAVES BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.
MONDAY
WEST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO 5 TO
8 FEET OCCASIONALLY TO 10 FEET, THEN SUBSIDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET.
MONDAY NIGHT
NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO
5 TO 15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
TUESDAY
NORTH WINDS 5 TO 15 KNOTS BACKING SOUTHWEST. WAVES
CALM TO 2 FEET.
WEDNESDAY
WEST WINDS 5 TO 15 KNOTS BECOMING NORTH 10 TO
20 KNOTS. WAVES BUILDING TO 2 TO 4 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ265-221645-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
344 AM EST SAT FEB 22 2025
EARLY THIS MORNING
SOUTHWEST WINDS 15 TO 25 KNOTS. WAVES 2 TO
4 FEET.
TODAY
WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 5 TO 15 KNOTS.
A SLIGHT CHANCE OF SNOW IN THE AFTERNOON. WAVES SUBSIDING TO CALM
TO 2 FEET.
TONIGHT
WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
SUNDAY
SOUTH WINDS 5 TO 15 KNOTS BACKING SOUTHEAST BY LATE
MORNING, THEN VEERING SOUTH BY MID AFTERNOON. WAVES BUILDING TO
1 TO 3 FEET.
SUNDAY NIGHT
SOUTH WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN AND SNOW SHOWERS.
WAVES BUILDING TO 2 TO 4 FEET, THEN SUBSIDING TO 1 TO 3 FEET.
MONDAY
WEST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN SHOWERS.
WAVES BUILDING TO 2 TO 4 FEET, THEN SUBSIDING TO CALM TO 2 FEET.
MONDAY NIGHT
WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST AFTER
MIDNIGHT. A CHANCE OF RAIN SHOWERS. A CHANCE OF SNOW SHOWERS
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
TUESDAY
NORTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH. WAVES
CALM TO 2 FEET.
WEDNESDAY
WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST. A
CHANCE OF RAIN SHOWERS. A CHANCE OF SNOW SHOWERS. WAVES BUILDING
TO 1 TO 3 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ266-221645-
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-
344 AM EST SAT FEB 22 2025
EARLY THIS MORNING
WEST WINDS 15 TO 25 KNOTS. FREEZING SPRAY.
WAVES 6 TO 9 FEET OCCASIONALLY TO 11 FEET.
TODAY
WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO 20 KNOTS
BY MID AFTERNOON. FREEZING SPRAY IN THE MORNING. A SLIGHT CHANCE
OF SNOW IN THE AFTERNOON. WAVES SUBSIDING TO 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
TONIGHT
WEST WINDS 10 TO 20 KNOTS BECOMING NORTH 5 TO 15 KNOTS
BY MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
SUNDAY
SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING SOUTH 10 TO
20 KNOTS. WAVES BUILDING TO 2 TO 4 FEET.
SUNDAY NIGHT
SOUTH WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW
SHOWERS, POSSIBLY MIXED WITH RAIN IN THE EVENING, THEN RAIN
SHOWERS, POSSIBLY MIXED WITH SNOW AFTER MIDNIGHT. WAVES BUILDING
TO 4 TO 8 FEET OCCASIONALLY TO 10 FEET.
MONDAY
WEST WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW SHOWERS IN
THE MORNING. A CHANCE OF RAIN SHOWERS. WAVES BUILDING TO 6 TO
9 FEET OCCASIONALLY TO 11 FEET, THEN SUBSIDING TO 4 TO 7 FEET
OCCASIONALLY TO 9 FEET.
MONDAY NIGHT
WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST AFTER
MIDNIGHT. A CHANCE OF RAIN SHOWERS. A CHANCE OF SNOW SHOWERS
AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
TUESDAY
NORTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH. WAVES
SUBSIDING TO CALM TO 2 FEET.
WEDNESDAY
WEST WINDS 10 TO 20 KNOTS VEERING NORTH. A CHANCE OF
SNOW SHOWERS, POSSIBLY MIXED WITH RAIN. WAVES BUILDING TO 2 TO
4 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ267-221645-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
344 AM EST SAT FEB 22 2025
EARLY THIS MORNING
SOUTHWEST WINDS 15 TO 25 KNOTS. FREEZING
SPRAY. WAVES 4 TO 7 FEET OCCASIONALLY TO 9 FEET.
TODAY
SOUTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO
20 KNOTS BY MID AFTERNOON. FREEZING SPRAY IN THE MORNING. A
SLIGHT CHANCE OF SNOW IN THE AFTERNOON. WAVES SUBSIDING TO 3 TO
5 FEET OCCASIONALLY TO 7 FEET.
TONIGHT
WEST WINDS 10 TO 20 KNOTS BECOMING NORTH 5 TO 15 KNOTS
BY MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
SUNDAY
SOUTHEAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS BY LATE MORNING, THEN VEERING SOUTH BY MID AFTERNOON.
WAVES BUILDING TO 1 TO 3 FEET.
SUNDAY NIGHT
SOUTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS,
POSSIBLY MIXED WITH RAIN IN THE EVENING, THEN SNOW SHOWERS,
POSSIBLY MIXED WITH RAIN AFTER MIDNIGHT. WAVES BUILDING TO 4 TO
7 FEET OCCASIONALLY TO 9 FEET.
MONDAY
SOUTHWEST WINDS 15 TO 25 KNOTS VEERING WEST IN THE
AFTERNOON. A CHANCE OF SNOW SHOWERS IN THE MORNING. A CHANCE OF
RAIN SHOWERS. WAVES SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO
8 FEET, THEN BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.
MONDAY NIGHT
WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST AFTER
MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
TUESDAY
NORTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH. WAVES
SUBSIDING TO CALM TO 2 FEET.
WEDNESDAY
SOUTH WINDS 10 TO 20 KNOTS BACKING NORTH. A CHANCE
OF SNOW SHOWERS. WAVES BUILDING TO 1 TO 3 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ261-221645-
MAFOR 2210/
SUPERIOR WEST 11640 13530 11620 11710 11800 11200. WAVES 4 TO 7
FEET SUBSIDING TO 3 TO 6 FEET TODAY. WAVES 3 TO 5 FEET SUBSIDING
TO 1 TO 3 FEET TONIGHT.
SUPERIOR NORTH CENTRAL 11640 11631 12630 11620 11710 11810 11110.
WAVES 6 TO 9 FEET SUBSIDING TO 3 TO 6 FEET TODAY. WAVES 3 TO 5
FEET SUBSIDING TO 1 TO 3 FEET TONIGHT.
SUPERIOR SOUTH CENTRAL 13630 11620 11610 12710 11700. WAVES 3 TO
5 FEET SUBSIDING TO 1 TO 3 FEET TODAY. WAVES 2 FEET OR LESS
TONIGHT. WAVE HEIGHTS ARE FOR ICE FREE AREAS.
SUPERIOR EAST 12631 12630 12620 11710 11810. WAVES 5 TO 8 FEET
SUBSIDING TO 3 TO 6 FEET TODAY. WAVES 3 TO 5 FEET SUBSIDING TO 1
TO 3 FEET TONIGHT.
VOSS
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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