141
FZUS63 KMQT 272001
GLFLS
OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
400 PM EDT SAT JUN 27 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
TONIGHT, LOW PRESSURE WILL PUSH NORTH OUT OF EASTERN MONTANA AND
DEEPEN OVER SOUTHERN SASKATCHEWAN TO 29.3 INCHES AS HIGH PRESSURE
RETREATS TO THE HUDSON BAY, REMAINING AT 30.1 INCHES. THE LOW PUSHES
INTO MANITOBA AND THE DAKOTAS EARLY MONDAY MORNING WHILE THE HIGH
SHIFTS SOUTHEAST TO JUST EAST OF THE LOWER GREAT LAKES. TUESDAY INTO
WEDNESDAY, THE LOW MOVES THROUGH NORTHERN ONTARIO AT AROUND 29.5
INCHES AS 30.1 INCH HIGH PRESSURE EXTENDS OVER MUCH OF THE EAST
COAST. BY THURSDAY MORNING, THE LOW WILL MOVE EAST THROUGH QUEBEC
WHILE 30.1 INCH HIGH PRESSURE BUILDS SOUTH OF THE GREAT LAKES.
LSZ162-280800-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
400 PM EDT SAT JUN 27 2026 /300 PM CDT SAT JUN 27 2026/
LATE THIS AFTERNOON
NORTHEAST WINDS 10 TO 20 KNOTS. WAVES CALM
TO 2 FEET BUILDING TO 1 TO 3 FEET.
TONIGHT
NORTHEAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT, THEN VEERING EAST LATE. A SLIGHT CHANCE
OF SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET, THEN BUILDING TO
1 TO 3 FEET.
SUNDAY
EAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS
IN THE AFTERNOON. A SLIGHT CHANCE OF SHOWERS BY MID AFTERNOON.
WAVES BUILDING TO 2 TO 4 FEET.
SUNDAY NIGHT
EAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS AND THUNDERSTORMS.
WAVES BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET, THEN
SUBSIDING TO 1 TO 3 FEET.
MONDAY
NORTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS AND A SLIGHT
CHANCE OF THUNDERSTORMS. WAVES SUBSIDING TO CALM TO 2 FEET, THEN
BUILDING TO 2 TO 4 FEET.
MONDAY NIGHT
NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. SHOWERS LIKELY AND A CHANCE OF
THUNDERSTORMS. WAVES SUBSIDING TO 1 TO 3 FEET.
TUESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF SHOWERS
AND THUNDERSTORMS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO
2 FEET.
TUESDAY NIGHT
SOUTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF
SHOWERS. WAVES CALM TO 2 FEET.
WEDNESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING SOUTH 5 TO
15 KNOTS. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO
2 FEET.
THURSDAY
EAST WINDS 5 TO 15 KNOTS BACKING NORTH. A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
LSZ263-280800-
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 PM EDT SAT JUN 27 2026
LATE THIS AFTERNOON
NORTHEAST WINDS 10 TO 20 KNOTS. WAVES CALM
TO 2 FEET.
TONIGHT
EAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS
AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS. WAVES BUILDING TO
1 TO 3 FEET, THEN SUBSIDING TO CALM TO 2 FEET.
SUNDAY
EAST WINDS 5 TO 15 KNOTS INCREASING TO 15 TO 25 KNOTS.
A SLIGHT CHANCE OF SHOWERS BY MID AFTERNOON. WAVES BUILDING TO
3 TO 5 FEET OCCASIONALLY TO 7 FEET.
SUNDAY NIGHT
EAST WINDS 15 TO 25 KNOTS BECOMING SOUTHEAST
10 TO 20 KNOTS AFTER MIDNIGHT, THEN BACKING EAST LATE. A CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES SUBSIDING TO 1 TO 3 FEET.
MONDAY
EAST WINDS 5 TO 15 KNOTS BECOMING NORTHEAST 15 TO
25 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS AND A SLIGHT
CHANCE OF THUNDERSTORMS. WAVES BUILDING TO 2 TO 4 FEET.
MONDAY NIGHT
EAST WINDS 15 TO 25 KNOTS BECOMING SOUTHWEST
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS THROUGH
MIDNIGHT. SHOWERS LIKELY AFTER MIDNIGHT. WAVES BUILDING TO 3 TO
5 FEET OCCASIONALLY TO 7 FEET, THEN SUBSIDING TO 2 TO 4 FEET.
TUESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF SHOWERS
AND THUNDERSTORMS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO
2 FEET.
TUESDAY NIGHT
SOUTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF
SHOWERS. WAVES BUILDING TO 1 TO 3 FEET.
WEDNESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING SOUTH 5 TO
15 KNOTS. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES SUBSIDING
TO CALM TO 2 FEET.
THURSDAY
SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST. A CHANCE
OF SHOWERS. WAVES CALM TO 2 FEET.
LSZ264-280800-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
400 PM EDT SAT JUN 27 2026
LATE THIS AFTERNOON
EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
TONIGHT
EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST AFTER
MIDNIGHT, THEN BACKING EAST LATE. A SLIGHT CHANCE OF SHOWERS
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
SUNDAY
EAST WINDS 5 TO 15 KNOTS INCREASING TO 15 TO 25 KNOTS.
A SLIGHT CHANCE OF SHOWERS BY MID AFTERNOON. WAVES BUILDING TO
2 TO 4 FEET.
SUNDAY NIGHT
SOUTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. A SLIGHT
CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. WAVES BUILDING TO 3 TO
5 FEET OCCASIONALLY TO 7 FEET.
MONDAY
SOUTHEAST WINDS 10 TO 20 KNOTS BACKING EAST BY MID
AFTERNOON. A CHANCE OF SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS. WAVES 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
MONDAY NIGHT
SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH
AFTER MIDNIGHT. SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS.
WAVES BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
TUESDAY
SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH BY MID
AFTERNOON. A CHANCE OF SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.
TUESDAY NIGHT
SOUTH WINDS 10 TO 20 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET, THEN BUILDING TO 1 TO 3 FEET.
WEDNESDAY
SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH. A
CHANCE OF SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
THURSDAY
SOUTH WINDS 5 TO 15 KNOTS VEERING WEST. A CHANCE OF
SHOWERS. WAVES CALM TO 2 FEET.
LSZ265-280800-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
400 PM EDT SAT JUN 27 2026
LATE THIS AFTERNOON
EAST WINDS 10 TO 20 KNOTS. WAVES CALM TO
2 FEET.
TONIGHT
EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST AFTER
MIDNIGHT, THEN BACKING EAST LATE. A SLIGHT CHANCE OF SHOWERS
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
SUNDAY
EAST WINDS 10 TO 20 KNOTS INCREASING TO 20 TO 30 KNOTS.
WAVES BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
SUNDAY NIGHT
SOUTHEAST WINDS 15 TO 25 KNOTS INCREASING TO
20 TO 30 KNOTS LATE. A CHANCE OF SHOWERS THROUGH MIDNIGHT, THEN
SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS AFTER MIDNIGHT.
WAVES SUBSIDING TO 1 TO 3 FEET, THEN BUILDING TO 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
MONDAY
SOUTHEAST WINDS 15 TO 25 KNOTS. A CHANCE OF SHOWERS AND
A SLIGHT CHANCE OF THUNDERSTORMS THROUGH EARLY AFTERNOON. WAVES
BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
MONDAY NIGHT
SOUTHEAST WINDS 20 TO 30 KNOTS BECOMING SOUTH
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. A CHANCE OF
THUNDERSTORMS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
TUESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTHEAST BY
MID AFTERNOON. A CHANCE OF SHOWERS BY MID AFTERNOON. WAVES
SUBSIDING TO CALM TO 2 FEET.
TUESDAY NIGHT
SOUTH WINDS 15 TO 25 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES CALM TO 2 FEET.
WEDNESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH. A
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
THURSDAY
SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS. A CHANCE OF SHOWERS. WAVES CALM TO 2 FEET.
LSZ266-280800-
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 PM EDT SAT JUN 27 2026
LATE THIS AFTERNOON
EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
TONIGHT
EAST WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE OF SHOWERS
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
SUNDAY
EAST WINDS 5 TO 15 KNOTS INCREASING TO 15 TO 25 KNOTS.
WAVES BUILDING TO 2 TO 4 FEET.
SUNDAY NIGHT
SOUTHEAST WINDS 15 TO 25 KNOTS INCREASING TO
20 TO 30 KNOTS LATE. A CHANCE OF SHOWERS. A SLIGHT CHANCE OF
THUNDERSTORMS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET,
THEN BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
MONDAY
SOUTHEAST WINDS 20 TO 30 KNOTS. A CHANCE OF SHOWERS AND
A SLIGHT CHANCE OF THUNDERSTORMS. WAVES BUILDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET.
MONDAY NIGHT
SOUTHEAST WINDS 20 TO 30 KNOTS BECOMING SOUTH
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES BUILDING TO 3 TO 6 FEET OCCASIONALLY TO
8 FEET.
TUESDAY
SOUTH WINDS 10 TO 20 KNOTS. A CHANCE OF SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
TUESDAY NIGHT
SOUTH WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES
BUILDING TO 1 TO 3 FEET.
WEDNESDAY
SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH. A
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES SUBSIDING TO CALM TO
2 FEET.
THURSDAY
SOUTH WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS. WAVES
CALM TO 2 FEET.
LSZ267-280800-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
400 PM EDT SAT JUN 27 2026
LATE THIS AFTERNOON
NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
TONIGHT
NORTHEAST WINDS 5 TO 15 KNOTS BECOMING EAST LESS THAN
10 KNOTS AFTER MIDNIGHT, THEN INCREASING TO 5 TO 15 KNOTS LATE.
WAVES CALM TO 2 FEET.
SUNDAY
EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
LATE. WAVES CALM TO 2 FEET.
SUNDAY NIGHT
SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS AFTER
MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
MONDAY
SOUTHEAST WINDS 15 TO 25 KNOTS. SHOWERS LIKELY THROUGH
EARLY AFTERNOON. A SLIGHT CHANCE OF THUNDERSTORMS. A CHANCE OF
SHOWERS BY MID AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
MONDAY NIGHT
SOUTHEAST WINDS 15 TO 25 KNOTS VEERING SOUTH
AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES SUBSIDING TO 2 TO
4 FEET.
TUESDAY
SOUTH WINDS 10 TO 20 KNOTS BACKING SOUTHEAST BY MID
AFTERNOON. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES SUBSIDING
TO CALM TO 2 FEET.
TUESDAY NIGHT
SOUTH WINDS 10 TO 20 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. A CHANCE OF SHOWERS THROUGH MIDNIGHT. A CHANCE OF
THUNDERSTORMS. SHOWERS LIKELY AFTER MIDNIGHT. WAVES BUILDING TO
1 TO 3 FEET.
WEDNESDAY
SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH. A
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES SUBSIDING TO CALM TO
2 FEET.
THURSDAY
SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST. A CHANCE
OF SHOWERS. WAVES CALM TO 2 FEET.
LSZ261-280200-
MAFOR 2721/
SUPERIOR WEST 12120 11220 13210 11220 11230. WAVES 1 TO 3 FEET
TONIGHT. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET SUNDAY.
SUPERIOR NORTH CENTRAL 11210 11200 12300 11200 11210 12220. WAVES
1 FOOT OR LESS TONIGHT. WAVES 2 FEET OR LESS BUILDING TO 2 TO 3
FEET SUNDAY.
SUPERIOR SOUTH CENTRAL 12210 11310 11300 11200 11210 11230 11240.
WAVES 1 FOOT OR LESS TONIGHT. WAVES 1 TO 3 FEET BUILDING TO 2 TO
4 FEET SUNDAY.
SUPERIOR EAST 11800 11100 11200 11300 12200 12210. WAVES 1 FOOT
OR LESS.
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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