036
FZUS63 KMQT 020142
GLFLS
OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
942 PM EDT TUE APR 1 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 WILL PRESS EAST INTO QUEBEC
TONIGHT WHILE A 29.2 INCH LOW LIFTS INTO THE GREAT LAKES FROM THE
PLAINS. THIS LOW MOVES THROUGH LAKE SUPERIOR WEDNESDAY NIGHT 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.
LSZ162-020945-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
942 PM EDT TUE APR 1 2025 /842 PM CDT TUE APR 1 2025/
...GALE WARNING IN EFFECT FROM 5 AM EDT /4 AM CDT/ WEDNESDAY
THROUGH WEDNESDAY EVENING...
REST OF TONIGHT
EAST WINDS 15 TO 25 KNOTS BECOMING SOUTHEAST
20 TO 30 KNOTS AFTER MIDNIGHT, THEN BACKING EAST LATE. A SLIGHT
CHANCE OF SNOW BY LATE EVENING, THEN SNOW AFTER MIDNIGHT. WAVES
3 TO 5 FEET OCCASIONALLY TO 7 FEET BUILDING TO 5 TO 8 FEET
OCCASIONALLY TO 10 FEET.
WEDNESDAY
EAST GALES TO 35 KNOTS. SNOW. A SLIGHT CHANCE OF
RAIN AND SLEET BY MID AFTERNOON. WAVES BUILDING TO 10 TO 14 FEET
OCCASIONALLY TO 18 FEET.
WEDNESDAY NIGHT
EAST GALES TO 35 KNOTS BECOMING NORTHEAST
20 TO 30 KNOTS AFTER MIDNIGHT, THEN BACKING NORTHWEST LATE. RAIN
SHOWERS, POSSIBLY MIXED WITH SNOW AND SLEET THROUGH MIDNIGHT,
THEN A CHANCE OF RAIN AND SNOW SHOWERS AFTER MIDNIGHT. WAVES
SUBSIDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
THURSDAY
WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. WAVES 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 NORTHWEST
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
SATURDAY
WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS. WAVES BUILDING TO 1 TO 3 FEET.
SUNDAY
NORTHWEST WINDS 15 TO 25 KNOTS VEERING NORTH. WAVES
BUILDING TO 2 TO 4 FEET.
LSZ263-020945-
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 PM EDT TUE APR 1 2025
...GALE WARNING IN EFFECT FROM 5 AM EDT WEDNESDAY THROUGH
WEDNESDAY EVENING...
REST OF TONIGHT
SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO
15 TO 25 KNOTS AFTER MIDNIGHT, THEN BECOMING EAST 20 TO 30 KNOTS
LATE. A CHANCE OF SNOW AFTER MIDNIGHT. WAVES 2 TO 4 FEET BUILDING
TO 6 TO 9 FEET OCCASIONALLY TO 11 FEET.
WEDNESDAY
EAST GALES TO 45 KNOTS. A CHANCE OF SNOW THROUGH
EARLY AFTERNOON. RAIN. SNOW, POSSIBLY MIXED WITH SLEET BY MID
AFTERNOON. WAVES BUILDING TO 15 TO 20 FEET OCCASIONALLY TO
25 FEET.
WEDNESDAY NIGHT
EAST GALES TO 40 KNOTS DIMINISHING TO 20 TO
30 KNOTS AFTER MIDNIGHT, THEN VEERING WEST LATE. RAIN SHOWERS
LIKELY WITH POCKETS OF SNOW SHOWERS AND SLEET THROUGH MIDNIGHT,
THEN A CHANCE OF RAIN AND SNOW SHOWERS AFTER MIDNIGHT. WAVES
SUBSIDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.
THURSDAY
WEST WINDS 20 TO 30 KNOTS. A SLIGHT CHANCE OF SNOW
SHOWERS THROUGH EARLY AFTERNOON. WAVES BUILDING TO 5 TO 8 FEET
OCCASIONALLY TO 10 FEET, THEN SUBSIDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET.
THURSDAY NIGHT
WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST
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 VEERING NORTHWEST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
SATURDAY
WEST WINDS 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 5 FEET OCCASIONALLY TO 7 FEET,
THEN SUBSIDING TO 2 TO 4 FEET.
LSZ264-020945-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
942 PM EDT TUE APR 1 2025
...GALE WARNING IN EFFECT FROM 2 AM EDT WEDNESDAY THROUGH
WEDNESDAY MORNING...
...STORM WARNING IN EFFECT FROM WEDNESDAY MORNING THROUGH
WEDNESDAY AFTERNOON...
REST OF TONIGHT
SOUTHEAST WINDS 15 TO 25 KNOTS INCREASING TO
20 TO 30 KNOTS LATE. A SLIGHT CHANCE OF SNOW AFTER MIDNIGHT.
WAVES 2 TO 4 FEET BUILDING TO 7 TO 10 FEET OCCASIONALLY TO
13 FEET.
WEDNESDAY
SOUTHEAST GALES TO 40 KNOTS BECOMING EAST GALES TO
45 KNOTS IN THE AFTERNOON. STORM FORCE WINDS TO 50 KNOTS ARE
POSSIBLE. A CHANCE OF SNOW THROUGH EARLY AFTERNOON, THEN SNOW,
POSSIBLY MIXED WITH SLEET AND RAIN BY MID AFTERNOON. WAVES
BUILDING TO 15 TO 20 FEET OCCASIONALLY TO 25 FEET.
WEDNESDAY NIGHT
EAST GALES TO 40 KNOTS BECOMING SOUTHEAST
20 TO 30 KNOTS AFTER MIDNIGHT, THEN VEERING WEST LATE. SLEET
LIKELY THROUGH MIDNIGHT. RAIN SHOWERS, POSSIBLY MIXED WITH SNOW.
WAVES SUBSIDING TO 5 TO 8 FEET OCCASIONALLY TO 10 FEET.
THURSDAY
WEST WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW SHOWERS
THROUGH EARLY AFTERNOON. WAVES SUBSIDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET.
THURSDAY NIGHT
WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST
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 VEERING WEST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
SATURDAY
WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST. WAVES
BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
SUNDAY
NORTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS. WAVES BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.
LSZ265-020945-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
942 PM EDT TUE APR 1 2025
...GALE WARNING IN EFFECT FROM 2 AM EDT WEDNESDAY THROUGH
WEDNESDAY EVENING...
REST OF TONIGHT
SOUTHEAST WINDS 20 TO 30 KNOTS INCREASING TO
GALES TO 35 KNOTS LATE. A CHANCE OF SNOW AFTER MIDNIGHT. WAVES
3 TO 5 FEET OCCASIONALLY TO 7 FEET BUILDING TO 6 TO 9 FEET
OCCASIONALLY TO 11 FEET.
WEDNESDAY
SOUTHEAST GALES TO 45 KNOTS. A CHANCE OF SNOW
THROUGH EARLY AFTERNOON, THEN RAIN AND SNOW LIKELY, POSSIBLY
MIXED WITH SLEET BY MID AFTERNOON. WAVES BUILDING TO 12 TO
17 FEET OCCASIONALLY TO 21 FEET.
WEDNESDAY NIGHT
SOUTHEAST WINDS 20 TO 30 KNOTS BECOMING SOUTH
15 TO 25 KNOTS AFTER MIDNIGHT, THEN BECOMING SOUTHWEST 20 TO
30 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 5 FEET OCCASIONALLY TO 7 FEET.
THURSDAY
WEST GALES TO 35 KNOTS DIMINISHING TO 15 TO 25 KNOTS
BY MID AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS THROUGH EARLY
AFTERNOON. WAVES BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET,
THEN SUBSIDING TO 2 TO 4 FEET.
THURSDAY NIGHT
WEST WINDS 10 TO 20 KNOTS. 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 10 TO 20 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 6 FEET OCCASIONALLY TO 8 FEET.
LSZ266-020945-
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 PM EDT TUE APR 1 2025
...GALE WARNING IN EFFECT FROM 2 AM EDT WEDNESDAY THROUGH
WEDNESDAY MORNING...
...STORM WARNING IN EFFECT FROM WEDNESDAY MORNING THROUGH
WEDNESDAY AFTERNOON...
REST OF TONIGHT
SOUTHEAST WINDS 20 TO 30 KNOTS INCREASING TO
GALES TO 35 KNOTS LATE. A SLIGHT CHANCE OF SNOW AFTER MIDNIGHT.
WAVES 3 TO 5 FEET OCCASIONALLY TO 7 FEET BUILDING TO 7 TO 10 FEET
OCCASIONALLY TO 13 FEET.
WEDNESDAY
SOUTHEAST GALES TO 45 KNOTS INCREASING TO STORM
FORCE WINDS TO 50 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW
THROUGH EARLY AFTERNOON, THEN SNOW LIKELY WITH POCKETS OF SLEET
WITH RAIN BY MID AFTERNOON. WAVES BUILDING TO 15 TO 20 FEET
OCCASIONALLY TO 25 FEET.
WEDNESDAY NIGHT
SOUTHEAST GALES TO 40 KNOTS BECOMING SOUTH
20 TO 30 KNOTS AFTER MIDNIGHT, THEN VEERING SOUTHWEST LATE. SLEET
LIKELY THROUGH MIDNIGHT. A CHANCE OF RAIN SHOWERS. A SLIGHT
CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO 4 TO
7 FEET OCCASIONALLY TO 9 FEET.
THURSDAY
WEST GALES TO 35 KNOTS DIMINISHING TO 20 TO 30 KNOTS
BY MID AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS THROUGH EARLY
AFTERNOON. WAVES BUILDING TO 7 TO 10 FEET OCCASIONALLY TO
13 FEET, THEN SUBSIDING TO 5 TO 8 FEET OCCASIONALLY TO 10 FEET.
THURSDAY NIGHT
WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST
5 TO 15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
FRIDAY
WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
FRIDAY NIGHT
SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING SOUTH
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
SATURDAY
NORTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS. WAVES BUILDING TO 2 TO 4 FEET.
SUNDAY
NORTHWEST WINDS 15 TO 25 KNOTS BECOMING NORTH 20 TO
30 KNOTS. WAVES BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.
LSZ267-020945-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
942 PM EDT TUE APR 1 2025
...GALE WARNING IN EFFECT FROM 2 AM EDT WEDNESDAY THROUGH
WEDNESDAY MORNING...
...STORM WARNING IN EFFECT FROM WEDNESDAY MORNING THROUGH
WEDNESDAY AFTERNOON...
REST OF TONIGHT
SOUTHEAST WINDS 20 TO 30 KNOTS INCREASING TO
GALES TO 35 KNOTS LATE. WAVES 2 TO 4 FEET BUILDING TO 6 TO 9 FEET
OCCASIONALLY TO 11 FEET.
WEDNESDAY
SOUTHEAST GALES TO 45 KNOTS INCREASING TO STORM
FORCE WINDS TO 50 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW
THROUGH EARLY AFTERNOON, THEN SNOW, POSSIBLY MIXED WITH SLEET AND
RAIN LIKELY BY MID AFTERNOON. WAVES BUILDING TO 10 TO 14 FEET
OCCASIONALLY TO 18 FEET.
WEDNESDAY NIGHT
SOUTHEAST GALES TO 45 KNOTS BECOMING SOUTH
20 TO 30 KNOTS LATE. SLEET LIKELY THROUGH MIDNIGHT. A CHANCE OF
RAIN SHOWERS. WAVES SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO
8 FEET.
THURSDAY
WEST GALES TO 35 KNOTS. A SLIGHT CHANCE OF RAIN AND
SNOW SHOWERS THROUGH EARLY AFTERNOON. WAVES BUILDING TO 8 TO
11 FEET OCCASIONALLY TO 14 FEET, THEN SUBSIDING TO 6 TO 9 FEET
OCCASIONALLY TO 11 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 BACKING WEST 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 10 TO 20 KNOTS. WAVES BUILDING TO
2 TO 4 FEET.
SUNDAY
NORTHWEST WINDS 15 TO 25 KNOTS BECOMING NORTH 20 TO
30 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 4 TO 8 FEET
OCCASIONALLY TO 10 FEET.
LSZ261-020945-
MAFOR 0203/
SUPERIOR WEST...GALE WARNING IN EFFECT...11330 11337 11247 14257
11257. WAVES 3 TO 6 FEET OVERNIGHT. WAVES 6 TO 10 FEET BUILDING
TO 9 TO 13 FEET WEDNESDAY. WAVES 10 TO 14 FEET WEDNESDAY EVENING.
SUPERIOR NORTH CENTRAL...STORM WARNING IN EFFECT...11330 11340
12350 11360 12277 11267. WAVES 3 TO 6 FEET BUILDING TO 5 TO 8
FEET OVERNIGHT. WAVES 7 TO 10 FEET BUILDING TO 15 TO 19 FEET
WEDNESDAY. WAVES 15 TO 20 FEET SUBSIDING TO 14 TO 18 FEET
WEDNESDAY EVENING.
SUPERIOR SOUTH CENTRAL...STORM WARNING IN EFFECT...11330 11340
12350 13367 11340. WAVES 3 TO 6 FEET BUILDING TO 5 TO 8 FEET
OVERNIGHT. WAVES 6 TO 9 FEET BUILDING TO 12 TO 16 FEET WEDNESDAY.
WAVES 12 TO 16 FEET SUBSIDING TO 10 TO 13 FEET WEDNESDAY EVENING.
SUPERIOR EAST...STORM WARNING IN EFFECT...11330 11340 11350 11360
11370 12377 11376. WAVES 2 TO 4 FEET BUILDING TO 5 TO 8 FEET
OVERNIGHT. WAVES 7 TO 10 FEET BUILDING TO 12 TO 16 FEET
WEDNESDAY. WAVES 11 TO 15 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
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page