675
FZUS63 KMQT 021342
GLFLS
OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
942 AM EDT WED APR 2 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
30.5 INCH HIGH PRESSURE REMAINS OVER QUEBEC THIS
MORNING WHILE A 29.2 INCH LOW LIFTS INTO THE GREAT LAKES FROM THE
PLAINS THROUGH TODAY. THIS LOW MOVES THROUGH LAKE SUPERIOR TONIGHT
AT 29.3 INCHES, THEN LIFTS TO NEAR JAMES BAY BY THURSDAY
AFTERNOON AT 29.4 INCHES. 30.3 INCH RIDGING ANCHORS ACROSS LAKE
SUPERIOR FRIDAY MORNING, THEN WEAKENS TO 30.0 INCHES BY SATURDAY.
WEAK TROUGH OF 30.0 INCHES MOVES THROUGH THE UPPER GREAT LAKES
SATURDAY NIGHT AND SUNDAY.
LSZ162-022145-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
942 AM EDT WED APR 2 2025 /842 AM CDT WED APR 2 2025/
...GALE WARNING IN EFFECT FROM 1 PM EDT /NOON CDT/ THIS AFTERNOON
THROUGH THIS EVENING...
REST OF TODAY
EAST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
40 KNOTS IN THE AFTERNOON. SNOW, POSSIBLY MIXED WITH RAIN. A
SLIGHT CHANCE OF THUNDERSTORMS AND SLEET BY MID AFTERNOON. WAVES
5 TO 8 FEET OCCASIONALLY TO 10 FEET BUILDING TO 10 TO 14 FEET
OCCASIONALLY TO 18 FEET.
TONIGHT
EAST GALES TO 40 KNOTS BECOMING WEST 15 TO 25 KNOTS
AFTER MIDNIGHT, THEN INCREASING TO 20 TO 30 KNOTS LATE. SNOW
SHOWERS LIKELY, POSSIBLY MIXED WITH SLEET THROUGH MIDNIGHT. A
CHANCE OF RAIN SHOWERS. A CHANCE OF SNOW SHOWERS AFTER MIDNIGHT.
WAVES SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
THURSDAY
WEST WINDS 20 TO 30 KNOTS DIMINISHING TO 10 TO
20 KNOTS. WAVES BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET,
THEN SUBSIDING TO 1 TO 3 FEET.
THURSDAY NIGHT
WEST WINDS 5 TO 15 KNOTS VEERING NORTHWEST
AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
FRIDAY
WEST WINDS 5 TO 15 KNOTS BACKING SOUTH BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
FRIDAY NIGHT
SOUTH WINDS 5 TO 15 KNOTS BECOMING NORTH 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
SATURDAY
WEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
SUNDAY
NORTHWEST WINDS 10 TO 20 KNOTS BECOMING NORTH 15 TO
25 KNOTS. WAVES BUILDING TO 1 TO 3 FEET.
LSZ263-022145-
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-
942 AM EDT WED APR 2 2025
..GALE WARNING IN EFFECT THROUGH THIS EVENING
...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH THURSDAY
AFTERNOON...
REST OF TODAY
SOUTHEAST GALES TO 35 KNOTS BECOMING EAST GALES
TO 45 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW BY LATE MORNING.
RAIN. SNOW, POSSIBLY MIXED WITH SLEET AND THUNDERSTORMS BY MID
AFTERNOON. WAVES 6 TO 9 FEET OCCASIONALLY TO 11 FEET BUILDING TO
15 TO 20 FEET OCCASIONALLY TO 25 FEET.
TONIGHT
EAST GALES TO 45 KNOTS BECOMING SOUTHWEST 20 TO
30 KNOTS AFTER MIDNIGHT, THEN BECOMING WEST GALES TO 35 KNOTS
LATE. SNOW SHOWERS LIKELY, POSSIBLY MIXED WITH SLEET THROUGH
MIDNIGHT. A CHANCE OF RAIN SHOWERS. A CHANCE OF SNOW SHOWERS
AFTER MIDNIGHT. WAVES SUBSIDING TO 6 TO 9 FEET OCCASIONALLY TO
11 FEET.
THURSDAY
WEST GALES TO 35 KNOTS DIMINISHING TO 20 TO 30 KNOTS
IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS THROUGH EARLY
AFTERNOON. WAVES BUILDING TO 7 TO 10 FEET OCCASIONALLY TO
13 FEET, THEN SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
THURSDAY NIGHT
WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
FRIDAY
WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
FRIDAY NIGHT
SOUTH WINDS 5 TO 15 KNOTS BACKING NORTH AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
SATURDAY
NORTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO
20 KNOTS. WAVES BUILDING TO 2 TO 4 FEET.
SUNDAY
NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH. WAVES
BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
LSZ264-022145-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
942 AM EDT WED APR 2 2025
..GALE WARNING IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON
...STORM WARNING IN EFFECT FROM 4 PM EDT THIS AFTERNOON THROUGH
THIS EVENING...
...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH THURSDAY
AFTERNOON...
REST OF TODAY
SOUTHEAST GALES TO 40 KNOTS INCREASING TO STORM
FORCE WINDS TO 50 KNOTS LATE. A CHANCE OF SNOW BY LATE MORNING,
THEN SNOW, POSSIBLY MIXED WITH SLEET, RAIN AND THUNDERSTORMS BY
MID AFTERNOON. WAVES 8 TO 11 FEET OCCASIONALLY TO 14 FEET
BUILDING TO 15 TO 20 FEET OCCASIONALLY TO 25 FEET.
TONIGHT
EAST GALES TO 45 KNOTS BECOMING SOUTHEAST 20 TO
30 KNOTS AFTER MIDNIGHT, THEN BECOMING WEST GALES TO 35 KNOTS
LATE. SNOW SHOWERS LIKELY, POSSIBLY MIXED WITH SLEET THROUGH
MIDNIGHT. A CHANCE OF RAIN SHOWERS. A SLIGHT CHANCE OF SNOW
SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO 6 TO 9 FEET
OCCASIONALLY TO 11 FEET.
THURSDAY
WEST GALES TO 35 KNOTS DIMINISHING TO 20 TO 30 KNOTS
LATE. A CHANCE OF SNOW SHOWERS THROUGH EARLY AFTERNOON. WAVES
BUILDING TO 7 TO 10 FEET OCCASIONALLY TO 13 FEET, THEN SUBSIDING
TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.
THURSDAY NIGHT
WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
FRIDAY
WEST WINDS 5 TO 15 KNOTS BACKING SOUTH BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
FRIDAY NIGHT
SOUTH WINDS 5 TO 15 KNOTS VEERING NORTHWEST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
SATURDAY
NORTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS. WAVES BUILDING TO 2 TO 4 FEET.
SUNDAY
NORTHWEST WINDS 10 TO 20 KNOTS BECOMING NORTH 15 TO
25 KNOTS. WAVES BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
LSZ265-022145-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
942 AM EDT WED APR 2 2025
..GALE WARNING IN EFFECT THROUGH THIS EVENING
...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH THURSDAY
AFTERNOON...
REST OF TODAY
SOUTHEAST GALES TO 45 KNOTS. A CHANCE OF SNOW BY
LATE MORNING, THEN SNOW, POSSIBLY MIXED WITH RAIN, SLEET AND
THUNDERSTORMS BY MID AFTERNOON. WAVES 6 TO 9 FEET OCCASIONALLY TO
11 FEET BUILDING TO 12 TO 17 FEET OCCASIONALLY TO 21 FEET.
TONIGHT
SOUTHEAST GALES TO 40 KNOTS BECOMING SOUTH 15 TO
25 KNOTS AFTER MIDNIGHT, THEN BECOMING SOUTHWEST GALES TO
35 KNOTS LATE. A CHANCE OF SLEET THROUGH MIDNIGHT. A CHANCE OF
RAIN SHOWERS. A SLIGHT CHANCE OF SNOW SHOWERS AFTER MIDNIGHT.
WAVES SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET, THEN
BUILDING TO 5 TO 8 FEET OCCASIONALLY TO 10 FEET.
THURSDAY
WEST GALES TO 40 KNOTS DIMINISHING TO 20 TO 30 KNOTS
LATE. WAVES BUILDING TO 6 TO 9 FEET OCCASIONALLY TO 11 FEET, THEN
SUBSIDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
THURSDAY NIGHT
WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
FRIDAY
WEST WINDS 5 TO 15 KNOTS BACKING SOUTHEAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
FRIDAY NIGHT
SOUTHEAST WINDS 5 TO 15 KNOTS VEERING WEST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
SATURDAY
NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST. WAVES
CALM TO 2 FEET.
SUNDAY
NORTHWEST WINDS 15 TO 25 KNOTS VEERING NORTH. WAVES
BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
LSZ266-022145-
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-
942 AM EDT WED APR 2 2025
..GALE WARNING IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON
...STORM WARNING IN EFFECT FROM 4 PM EDT THIS AFTERNOON THROUGH
THIS EVENING...
...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH THURSDAY
AFTERNOON...
REST OF TODAY
SOUTHEAST GALES TO 45 KNOTS INCREASING TO STORM
FORCE WINDS TO 55 KNOTS LATE. A CHANCE OF SNOW BY LATE MORNING,
THEN SNOW, POSSIBLY MIXED WITH RAIN, THUNDERSTORMS AND SLEET BY
MID AFTERNOON. WAVES 8 TO 11 FEET OCCASIONALLY TO 14 FEET
BUILDING TO 15 TO 20 FEET OCCASIONALLY TO 25 FEET.
TONIGHT
SOUTHEAST STORM FORCE WINDS TO 55 KNOTS BECOMING SOUTH
GALES TO 35 KNOTS AFTER MIDNIGHT, THEN VEERING SOUTHWEST LATE.
SNOW SHOWERS AND SLEET LIKELY THROUGH MIDNIGHT. A CHANCE OF RAIN
SHOWERS. WAVES SUBSIDING TO 6 TO 9 FEET OCCASIONALLY TO 11 FEET.
THURSDAY
WEST GALES TO 40 KNOTS DIMINISHING TO 20 TO 30 KNOTS
LATE. WAVES BUILDING TO 10 TO 14 FEET OCCASIONALLY TO 18 FEET,
THEN SUBSIDING TO 7 TO 10 FEET OCCASIONALLY TO 13 FEET.
THURSDAY NIGHT
WEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST
5 TO 15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
FRIDAY
WEST WINDS 5 TO 15 KNOTS BACKING SOUTH BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
FRIDAY NIGHT
SOUTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
SATURDAY
NORTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS. WAVES BUILDING TO 2 TO 4 FEET.
SUNDAY
NORTHWEST WINDS 15 TO 25 KNOTS VEERING NORTH. WAVES
BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
LSZ267-022145-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
942 AM EDT WED APR 2 2025
..GALE WARNING IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON
...STORM WARNING IN EFFECT FROM 4 PM EDT THIS AFTERNOON THROUGH
THIS EVENING...
...GALE WARNING IN EFFECT FROM THURSDAY MORNING THROUGH THURSDAY
AFTERNOON...
REST OF TODAY
SOUTHEAST GALES TO 45 KNOTS INCREASING TO STORM
FORCE WINDS TO 55 KNOTS LATE. A CHANCE OF SNOW BY LATE MORNING,
THEN SNOW, POSSIBLY MIXED WITH SLEET AND RAIN LIKELY BY MID
AFTERNOON. WAVES 7 TO 10 FEET OCCASIONALLY TO 13 FEET BUILDING TO
11 TO 15 FEET OCCASIONALLY TO 19 FEET.
TONIGHT
SOUTHEAST STORM FORCE WINDS TO 55 KNOTS DIMINISHING TO
GALES TO 40 KNOTS AFTER MIDNIGHT, THEN BECOMING SOUTHWEST 20 TO
30 KNOTS LATE. A CHANCE OF RAIN SHOWERS, POSSIBLY MIXED WITH
SLEET THROUGH MIDNIGHT. WAVES BUILDING TO 12 TO 17 FEET
OCCASIONALLY TO 21 FEET, THEN SUBSIDING TO 4 TO 7 FEET
OCCASIONALLY TO 9 FEET.
THURSDAY
WEST GALES TO 40 KNOTS. WAVES BUILDING TO 10 TO
14 FEET OCCASIONALLY TO 18 FEET, THEN SUBSIDING TO 7 TO 10 FEET
OCCASIONALLY TO 13 FEET.
THURSDAY NIGHT
WEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
FRIDAY
NORTHWEST WINDS 5 TO 15 KNOTS VEERING EAST BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
FRIDAY NIGHT
EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
SATURDAY
NORTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS. WAVES BUILDING TO 2 TO 4 FEET.
SUNDAY
NORTHWEST WINDS 15 TO 25 KNOTS VEERING NORTH. WAVES
BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
LSZ261-022145-
MAFOR 0215/
SUPERIOR WEST...GALE WARNING IN EFFECT...14257 11340 13640. WAVES
6 TO 10 FEET BUILDING TO 9 TO 12 FEET THIS AFTERNOON. WAVES 10 TO
14 FEET SUBSIDING TO 5 TO 7 FEET TONIGHT. WAVES 5 TO 8 FEET
THURSDAY MORNING.
SUPERIOR NORTH CENTRAL...STORM WARNING IN EFFECT...11350 11367
11377 11267 11350 11450 12650. A CHANCE OF RAIN SHOWERS TONIGHT.
WAVES 10 TO 14 FEET BUILDING TO 13 TO 17 FEET THIS AFTERNOON.
WAVES 14 TO 19 FEET SUBSIDING TO 9 TO 12 FEET TONIGHT. WAVES 7 TO
10 FEET THURSDAY MORNING.
SUPERIOR SOUTH CENTRAL...STORM WARNING IN EFFECT...11350 12367
11350 11340 11430 11550 11650. WAVES 7 TO 10 FEET BUILDING TO 10
TO 14 FEET THIS AFTERNOON. WAVES 10 TO 15 FEET SUBSIDING TO 4 TO
7 FEET TONIGHT. WAVES 5 TO 8 FEET BUILDING TO 7 TO 10 FEET
THURSDAY MORNING.
SUPERIOR EAST...STORM WARNING IN EFFECT...11350 12377 11376 11360
11440 11550 11650. WAVES 8 TO 11 FEET BUILDING TO 10 TO 15 FEET
THIS AFTERNOON. WAVES 13 TO 17 FEET SUBSIDING TO 6 TO 9 FEET
TONIGHT. WAVES 6 TO 9 FEET BUILDING TO 9 TO 12 FEET THURSDAY
MORNING.
LC
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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