108
FZUS63 KMQT 110801
GLFLS
OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
400 AM EDT WED MAR 11 2026
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
29.6 INCH LOW PRESSURE CURRENTLY NEAR SOUTHERN LAKE MICHIGAN MOVES
THROUGH LOWER MICHIGAN TODAY, REACHING LAKE HURON AT 29.4 INCHES BY
THE EVENING BEFORE EXITING EASTWARD. THURSDAY, LAKE SUPERIOR WILL BE
SITUATED BETWEEN A 29.3 INCH LOW OVER THE MOUTH OF THE ST LAWRENCE
RIVER, A 29.4 INCH LOW OVER NORTH DAKOTA, A 30.3 INCH HIGH OVER THE
LOWER MISSISSIPPI RIVER VALLEY, AND A 30.1 INCH RIDGE OVER HUDSON
BAY. THE DAKOTAS LOW ARRIVES NEAR THE LAKE FRIDAY MORNING AT NEAR
29.2 INCHES, THEN MOVES INTO SOUTHERN QUEBEC FRIDAY NIGHT. A 30.2
INCH RIDGE WILL THEN FOLLOW ACROSS THE UPPER GREAT LAKES SATURDAY,
AHEAD OF AN APPROACHING 29.5 INCH LOW THAT DEEPENS TO 29.2 INCHES
OVER SOUTHERN MICHIGAN SUNDAY EVENING. MONDAY, THE LOW WILL MOVE TO
THE ONTARIO/QUEBEC LINE WHILE 30.4 INCH HIGH PRESSURE OVERSPREADS
THE NORTHERN PLAINS.
LSZ162-112000-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
400 AM EDT WED MAR 11 2026 /300 AM CDT WED MAR 11 2026/
EARLY THIS MORNING
NORTHEAST WINDS 10 TO 20 KNOTS. A CHANCE OF
SNOW. WAVES 2 TO 4 FEET.
TODAY
NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST LATE. A
CHANCE OF SNOW THROUGH EARLY AFTERNOON. WAVES SUBSIDING TO 1 TO
3 FEET.
TONIGHT
NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS LATE. WAVES SUBSIDING TO CALM TO 2 FEET.
THURSDAY
NORTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH IN THE
AFTERNOON, THEN BECOMING EAST 10 TO 20 KNOTS LATE. A SLIGHT
CHANCE OF SNOW SHOWERS BY MID AFTERNOON. WAVES BUILDING TO 1 TO
3 FEET.
THURSDAY NIGHT
EAST GALES TO 40 KNOTS BACKING NORTHEAST AFTER
MIDNIGHT. SNOW SHOWERS. FREEZING SPRAY AFTER MIDNIGHT. WAVES
BUILDING TO 10 TO 14 FEET OCCASIONALLY TO 18 FEET.
FRIDAY
NORTH GALES TO 40 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS BY MID AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.
FRIDAY NIGHT
NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO
5 TO 15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
SATURDAY
SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING NORTHEAST
20 TO 30 KNOTS. FREEZING SPRAY. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 5 TO 8 FEET OCCASIONALLY TO 10 FEET.
SUNDAY
NORTHEAST GALES TO 35 KNOTS BECOMING NORTH GALES TO
40 KNOTS. FREEZING SPRAY. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 11 TO 15 FEET OCCASIONALLY TO 19 FEET, THEN SUBSIDING
TO 9 TO 12 FEET OCCASIONALLY TO 15 FEET.
LSZ263-112000-
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-
400 AM EDT WED MAR 11 2026
EARLY THIS MORNING
NORTHEAST WINDS 10 TO 20 KNOTS. SNOW
LIKELY. WAVES 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
TODAY
NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST LATE. A
CHANCE OF SNOW THROUGH EARLY AFTERNOON. WAVES SUBSIDING TO 2 TO
4 FEET.
TONIGHT
NORTHWEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
1 TO 3 FEET.
THURSDAY
NORTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST LESS THAN
10 KNOTS IN THE AFTERNOON, THEN BECOMING SOUTHEAST 10 TO 20 KNOTS
LATE. WAVES SUBSIDING TO CALM TO 2 FEET.
THURSDAY NIGHT
EAST GALES TO 40 KNOTS. FREEZING SPRAY. SNOW
SHOWERS LIKELY. WAVES BUILDING TO 12 TO 17 FEET OCCASIONALLY TO
21 FEET.
FRIDAY
NORTH GALES TO 40 KNOTS DIMINISHING TO 20 TO 30 KNOTS
BY MID AFTERNOON. FREEZING SPRAY. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 5 TO 8 FEET OCCASIONALLY TO 10 FEET.
FRIDAY NIGHT
NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO
5 TO 15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
SATURDAY
SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING EAST 20 TO
30 KNOTS. FREEZING SPRAY. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 5 TO 8 FEET OCCASIONALLY TO 10 FEET.
SUNDAY
NORTHEAST GALES TO 40 KNOTS BECOMING NORTH GALES TO
45 KNOTS. HEAVY FREEZING SPRAY. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 15 TO 20 FEET OCCASIONALLY TO 25 FEET.
LSZ264-112000-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
400 AM EDT WED MAR 11 2026
EARLY THIS MORNING
NORTHEAST WINDS 10 TO 20 KNOTS. A CHANCE OF
SNOW. WAVES 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
TODAY
NORTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO 30 KNOTS
LATE. FREEZING SPRAY THROUGH EARLY AFTERNOON. A CHANCE OF SNOW.
WAVES BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
TONIGHT
NORTH WINDS 20 TO 30 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 4 TO 7 FEET
OCCASIONALLY TO 9 FEET, THEN SUBSIDING TO 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
THURSDAY
NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS IN THE AFTERNOON, THEN BACKING SOUTHEAST LATE. WAVES
SUBSIDING TO CALM TO 2 FEET.
THURSDAY NIGHT
SOUTHEAST GALES TO 40 KNOTS BECOMING EAST GALES
TO 45 KNOTS AFTER MIDNIGHT. FREEZING SPRAY. A CHANCE OF SNOW
SHOWERS THROUGH MIDNIGHT. SNOW SHOWERS LIKELY AFTER MIDNIGHT.
WAVES BUILDING TO 12 TO 17 FEET OCCASIONALLY TO 21 FEET.
FRIDAY
NORTHEAST GALES TO 45 KNOTS BECOMING NORTH GALES TO
40 KNOTS BY MID AFTERNOON. FREEZING SPRAY. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 7 TO 10 FEET OCCASIONALLY TO 13 FEET.
FRIDAY NIGHT
NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. FREEZING SPRAY THROUGH MIDNIGHT. WAVES
SUBSIDING TO 1 TO 3 FEET.
SATURDAY
SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING SOUTH 20 TO
30 KNOTS. FREEZING SPRAY. WAVES SUBSIDING TO CALM TO 2 FEET, THEN
BUILDING TO 5 TO 8 FEET OCCASIONALLY TO 10 FEET.
SUNDAY
NORTHEAST GALES TO 40 KNOTS BECOMING NORTH STORM FORCE
WINDS TO 55 KNOTS. HEAVY FREEZING SPRAY. A CHANCE OF SNOW
SHOWERS. WAVES BUILDING TO 17 TO 22 FEET OCCASIONALLY TO 28 FEET.
LSZ265-112000-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
400 AM EDT WED MAR 11 2026
EARLY THIS MORNING
NORTHEAST WINDS 15 TO 25 KNOTS. SNOW. WAVES
3 TO 6 FEET OCCASIONALLY TO 8 FEET BUILDING TO 4 TO 7 FEET
OCCASIONALLY TO 9 FEET.
TODAY
NORTHEAST WINDS 20 TO 30 KNOTS BECOMING NORTH TO
30 KNOTS WITH A FEW GALE FORCE GUSTS TO 35 KNOTS POSSIBLE IN THE
AFTERNOON. FREEZING SPRAY. SNOW THROUGH EARLY AFTERNOON. A CHANCE
OF SNOW BY MID AFTERNOON. WAVES BUILDING TO 7 TO 10 FEET
OCCASIONALLY TO 13 FEET.
TONIGHT
NORTHWEST WINDS TO 30 KNOTS WITH A FEW GALE FORCE
GUSTS TO 35 KNOTS POSSIBLE DIMINISHING TO 20 TO 30 KNOTS AFTER
MIDNIGHT. FREEZING SPRAY. WAVES SUBSIDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET.
THURSDAY
NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS IN THE AFTERNOON, THEN BACKING SOUTHEAST LATE. WAVES
SUBSIDING TO CALM TO 2 FEET.
THURSDAY NIGHT
SOUTHEAST GALES TO 40 KNOTS BECOMING EAST STORM
FORCE WINDS TO 50 KNOTS AFTER MIDNIGHT. FREEZING SPRAY. A CHANCE
OF SNOW SHOWERS THROUGH MIDNIGHT. SNOW SHOWERS LIKELY AFTER
MIDNIGHT. WAVES BUILDING TO 12 TO 17 FEET OCCASIONALLY TO
21 FEET.
FRIDAY
NORTHEAST STORM FORCE WINDS TO 50 KNOTS BECOMING NORTH
GALES TO 45 KNOTS BY MID AFTERNOON. FREEZING SPRAY. SNOW SHOWERS
LIKELY THROUGH EARLY AFTERNOON. A CHANCE OF SNOW SHOWERS BY MID
AFTERNOON. WAVES SUBSIDING TO 10 TO 14 FEET OCCASIONALLY TO
18 FEET.
FRIDAY NIGHT
NORTHWEST GALES TO 35 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. FREEZING SPRAY. WAVES SUBSIDING TO 2 TO
4 FEET.
SATURDAY
WEST WINDS 10 TO 20 KNOTS BECOMING SOUTHEAST 20 TO
30 KNOTS. FREEZING SPRAY. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET, THEN BUILDING TO 5 TO 8 FEET
OCCASIONALLY TO 10 FEET.
SUNDAY
NORTHEAST GALES TO 40 KNOTS BECOMING NORTH STORM FORCE
WINDS TO 55 KNOTS. HEAVY FREEZING SPRAY. A CHANCE OF SNOW
SHOWERS. WAVES BUILDING TO 20 TO 25 FEET OCCASIONALLY TO 31 FEET.
LSZ266-112000-
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-
400 AM EDT WED MAR 11 2026
EARLY THIS MORNING
NORTHEAST WINDS 20 TO 30 KNOTS. FREEZING
SPRAY. SNOW. WAVES 3 TO 6 FEET OCCASIONALLY TO 8 FEET BUILDING TO
4 TO 7 FEET OCCASIONALLY TO 9 FEET.
TODAY
NORTHEAST WINDS 20 TO 30 KNOTS BACKING NORTH IN THE
AFTERNOON, THEN INCREASING TO 30 KNOTS WITH A FEW GALE FORCE
GUSTS TO 35 KNOTS POSSIBLE LATE. FREEZING SPRAY. SNOW. WAVES
BUILDING TO 8 TO 11 FEET OCCASIONALLY TO 14 FEET.
TONIGHT
NORTH WINDS TO 30 KNOTS WITH A FEW GALE FORCE GUSTS TO
35 KNOTS POSSIBLE BECOMING NORTHWEST 20 TO 30 KNOTS LATE. A
CHANCE OF SNOW SHOWERS THROUGH MIDNIGHT. FREEZING SPRAY. WAVES
BUILDING TO 9 TO 12 FEET OCCASIONALLY TO 15 FEET, THEN SUBSIDING
TO 5 TO 8 FEET OCCASIONALLY TO 10 FEET.
THURSDAY
NORTH WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS IN THE AFTERNOON, THEN BACKING SOUTHEAST LATE. FREEZING
SPRAY THROUGH EARLY AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
THURSDAY NIGHT
SOUTHEAST GALES TO 40 KNOTS BECOMING EAST GALES
TO 45 KNOTS AFTER MIDNIGHT. FREEZING SPRAY. A CHANCE OF SNOW
SHOWERS THROUGH MIDNIGHT. SNOW SHOWERS LIKELY AFTER MIDNIGHT.
WAVES BUILDING TO 12 TO 17 FEET OCCASIONALLY TO 21 FEET.
FRIDAY
EAST GALES TO 45 KNOTS BACKING NORTH BY MID AFTERNOON.
FREEZING SPRAY. SNOW SHOWERS LIKELY THROUGH EARLY AFTERNOON. A
CHANCE OF SNOW SHOWERS BY MID AFTERNOON. WAVES SUBSIDING TO 11 TO
15 FEET OCCASIONALLY TO 19 FEET.
FRIDAY NIGHT
NORTH GALES TO 40 KNOTS DIMINISHING TO 20 TO
30 KNOTS AFTER MIDNIGHT. FREEZING SPRAY. WAVES SUBSIDING TO 3 TO
6 FEET OCCASIONALLY TO 8 FEET.
SATURDAY
NORTHWEST WINDS 10 TO 20 KNOTS BECOMING SOUTH 20 TO
30 KNOTS. FREEZING SPRAY. WAVES SUBSIDING TO CALM TO 2 FEET, THEN
BUILDING TO 5 TO 8 FEET OCCASIONALLY TO 10 FEET.
SUNDAY
NORTHEAST GALES TO 45 KNOTS BECOMING NORTH STORM FORCE
WINDS TO 60 KNOTS. HEAVY FREEZING SPRAY. A CHANCE OF SNOW
SHOWERS. WAVES BUILDING TO 22 TO 27 FEET OCCASIONALLY TO 34 FEET.
LSZ267-112000-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
400 AM EDT WED MAR 11 2026
EARLY THIS MORNING
NORTHEAST WINDS 20 TO 30 KNOTS. SNOW. WAVES
3 TO 5 FEET OCCASIONALLY TO 7 FEET.
TODAY
NORTHEAST WINDS 15 TO 25 KNOTS BECOMING NORTH 20 TO
30 KNOTS IN THE AFTERNOON. FREEZING SPRAY. SNOW. WAVES BUILDING
TO 5 TO 8 FEET OCCASIONALLY TO 10 FEET.
TONIGHT
NORTH WINDS TO 30 KNOTS WITH A FEW GALE FORCE GUSTS TO
35 KNOTS POSSIBLE DIMINISHING TO 20 TO 30 KNOTS LATE. A CHANCE OF
SNOW SHOWERS THROUGH MIDNIGHT. FREEZING SPRAY. WAVES BUILDING TO
7 TO 10 FEET OCCASIONALLY TO 13 FEET, THEN SUBSIDING TO 5 TO
8 FEET OCCASIONALLY TO 10 FEET.
THURSDAY
NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS IN THE AFTERNOON, THEN BECOMING NORTHWEST 5 TO 15 KNOTS
LATE. WAVES SUBSIDING TO CALM TO 2 FEET.
THURSDAY NIGHT
SOUTHEAST GALES TO 35 KNOTS BECOMING EAST GALES
TO 45 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS
THROUGH MIDNIGHT, THEN SNOW SHOWERS LIKELY AFTER MIDNIGHT. HEAVY
FREEZING SPRAY AFTER MIDNIGHT. WAVES BUILDING TO 10 TO 14 FEET
OCCASIONALLY TO 18 FEET.
FRIDAY
EAST GALES TO 45 KNOTS BACKING NORTH BY MID AFTERNOON.
FREEZING SPRAY. SNOW SHOWERS LIKELY THROUGH EARLY AFTERNOON. A
CHANCE OF SNOW SHOWERS BY MID AFTERNOON. WAVES SUBSIDING TO 9 TO
12 FEET OCCASIONALLY TO 15 FEET, THEN BUILDING TO 10 TO 14 FEET
OCCASIONALLY TO 18 FEET.
FRIDAY NIGHT
NORTH GALES TO 35 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. FREEZING SPRAY. WAVES SUBSIDING TO 3 TO
6 FEET OCCASIONALLY TO 8 FEET.
SATURDAY
NORTHWEST WINDS 10 TO 20 KNOTS BECOMING SOUTHEAST
20 TO 30 KNOTS. FREEZING SPRAY. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET, THEN BUILDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET.
SUNDAY
EAST GALES TO 40 KNOTS BECOMING NORTH STORM FORCE WINDS
TO 55 KNOTS. HEAVY FREEZING SPRAY. A CHANCE OF SNOW SHOWERS. SNOW
SHOWERS LIKELY. WAVES BUILDING TO 15 TO 20 FEET OCCASIONALLY TO
25 FEET.
LSZ261-111400-
MAFOR 1109/
SUPERIOR WEST 11127 12820 11710 14720. WAVES 2 TO 4 FEET TODAY.
WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET TONIGHT.
SUPERIOR NORTH CENTRAL 11120 11131 11831 11841 12840 11841 11731.
A CHANCE OF SNOW TODAY. WAVES 3 TO 6 FEET TODAY. WAVES 4 TO 7
FEET TONIGHT.
SUPERIOR SOUTH CENTRAL 12137 11847 11857 11851 11750 11751 11741.
WAVES 3 TO 6 FEET BUILDING TO 6 TO 9 FEET TODAY. WAVES 6 TO 10
FEET TONIGHT.
SUPERIOR EAST 11137 11147 11137 12847 11851 12841. WAVES 3 TO 6
FEET BUILDING TO 4 TO 7 FEET TODAY. WAVES 5 TO 9 FEET TONIGHT.
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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