019
FZUS63 KMQT 270201
GLFLS
OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
1000 PM EDT FRI JUN 26 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
THROUGH SATURDAY AFTERNOON, 30.1 INCH HIGH WILL EXTEND FROM THE
UPPER GREAT LAKES TO EASTERN HUDSON BAY WHILE LOW PRESSURE OF AT
LEAST 29.5 INCHES DEVELOPS OVER THE HIGH PLAINS. INTO SUNDAY
MORNING, THE LOW CONSOLIDATES TO AROUND 29.4 INCHES OVER SOUTHERN
SASKATCHEWAN AS THE HIGH RETREATS TO 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.
LSZ162-270800-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
1000 PM EDT FRI JUN 26 2026 /900 PM CDT FRI JUN 26 2026/
REST OF TONIGHT
NORTHEAST WINDS 5 TO 15 KNOTS VEERING EAST
LATE. WAVES CALM TO 2 FEET.
SATURDAY
EAST WINDS 5 TO 15 KNOTS BECOMING NORTHEAST 10 TO
20 KNOTS IN THE AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
SATURDAY NIGHT
EAST WINDS 10 TO 20 KNOTS BECOMING NORTHEAST
5 TO 15 KNOTS AFTER MIDNIGHT, THEN INCREASING TO 10 TO 20 KNOTS
LATE. WAVES SUBSIDING TO CALM TO 2 FEET.
SUNDAY
EAST WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 15 TO
25 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS. A SLIGHT CHANCE
OF THUNDERSTORMS 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. SHOWERS LIKELY AND A CHANCE OF
THUNDERSTORMS. WAVES SUBSIDING TO 1 TO 3 FEET.
MONDAY
NORTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET,
THEN BUILDING TO 1 TO 3 FEET.
MONDAY NIGHT
NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES BUILDING TO 2 TO 4 FEET, THEN SUBSIDING TO
1 TO 3 FEET.
TUESDAY
SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO
20 KNOTS. A CHANCE OF SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
WEDNESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO
2 FEET.
LSZ263-270800-
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-
1000 PM EDT FRI JUN 26 2026
REST OF TONIGHT
EAST WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST
LESS THAN 10 KNOTS LATE. WAVES CALM TO 2 FEET.
SATURDAY
EAST WINDS LESS THAN 10 KNOTS BECOMING NORTHEAST 5 TO
15 KNOTS IN THE AFTERNOON, THEN INCREASING TO 10 TO 20 KNOTS
LATE. WAVES CALM TO 2 FEET.
SATURDAY NIGHT
EAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT, THEN VEERING SOUTHEAST LATE. WAVES
BUILDING TO 1 TO 3 FEET, THEN SUBSIDING TO CALM TO 2 FEET.
SUNDAY
EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
BY MID AFTERNOON. A CHANCE OF SHOWERS BY MID AFTERNOON. WAVES
BUILDING TO 2 TO 4 FEET.
SUNDAY NIGHT
EAST WINDS 15 TO 25 KNOTS BECOMING SOUTHEAST
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS THROUGH
MIDNIGHT. A SLIGHT CHANCE OF THUNDERSTORMS. SHOWERS LIKELY AFTER
MIDNIGHT. WAVES 2 TO 4 FEET.
MONDAY
EAST WINDS 10 TO 20 KNOTS. WAVES 2 TO 4 FEET.
MONDAY NIGHT
EAST WINDS 10 TO 20 KNOTS VEERING SOUTH AFTER
MIDNIGHT. A CHANCE OF SHOWERS THROUGH MIDNIGHT. A CHANCE OF
THUNDERSTORMS. SHOWERS LIKELY AFTER MIDNIGHT. WAVES 2 TO 4 FEET.
TUESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF SHOWERS.
WAVES SUBSIDING TO CALM TO 2 FEET, THEN BUILDING TO 1 TO 3 FEET.
WEDNESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF SHOWERS.
WAVES SUBSIDING TO CALM TO 2 FEET, THEN BUILDING TO 1 TO 3 FEET.
LSZ264-270800-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
1000 PM EDT FRI JUN 26 2026
REST OF TONIGHT
SOUTHEAST WINDS LESS THAN 10 KNOTS. WAVES CALM
TO 2 FEET.
SATURDAY
EAST WINDS LESS THAN 10 KNOTS INCREASING TO 5 TO
15 KNOTS IN THE AFTERNOON. WAVES CALM TO 2 FEET.
SATURDAY NIGHT
EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST
AFTER MIDNIGHT, THEN BACKING EAST LATE. WAVES CALM TO 2 FEET.
SUNDAY
EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS BY MID AFTERNOON.
WAVES BUILDING TO 2 TO 4 FEET.
SUNDAY NIGHT
SOUTHEAST WINDS 15 TO 25 KNOTS. A CHANCE OF
SHOWERS THROUGH MIDNIGHT, THEN SHOWERS LIKELY AND A SLIGHT CHANCE
OF THUNDERSTORMS AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
MONDAY
SOUTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. WAVES 3 TO 5 FEET OCCASIONALLY TO
7 FEET.
MONDAY NIGHT
SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH
AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
TUESDAY
SOUTH WINDS 10 TO 20 KNOTS VEERING SOUTHWEST. A CHANCE
OF SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET, THEN BUILDING TO
1 TO 3 FEET.
WEDNESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. A CHANCE OF SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
LSZ265-270800-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
1000 PM EDT FRI JUN 26 2026
REST OF TONIGHT
SOUTHEAST WINDS 5 TO 15 KNOTS. PATCHY DENSE
FOG AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
SATURDAY
SOUTHEAST WINDS 5 TO 15 KNOTS BACKING EAST IN THE
AFTERNOON. WAVES CALM TO 2 FEET.
SATURDAY NIGHT
SOUTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
SUNDAY
SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING EAST 20 TO
30 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS BY MID
AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
SUNDAY NIGHT
SOUTHEAST WINDS 15 TO 25 KNOTS. A CHANCE OF
SHOWERS THROUGH MIDNIGHT, THEN SHOWERS LIKELY AND 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 15 TO 25 KNOTS. WAVES 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
MONDAY NIGHT
SOUTHEAST WINDS 20 TO 30 KNOTS BECOMING SOUTH
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES
SUBSIDING TO 1 TO 3 FEET.
TUESDAY
SOUTH WINDS 10 TO 20 KNOTS VEERING SOUTHWEST. A CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES SUBSIDING TO CALM TO 2 FEET.
WEDNESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF SHOWERS.
WAVES CALM TO 2 FEET.
LSZ266-270800-
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-
1000 PM EDT FRI JUN 26 2026
REST OF TONIGHT
EAST WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST
LESS THAN 10 KNOTS AFTER MIDNIGHT. PATCHY DENSE FOG AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
SATURDAY
EAST WINDS 5 TO 15 KNOTS DIMINISHING TO LESS THAN
10 KNOTS IN THE AFTERNOON, THEN INCREASING TO 5 TO 15 KNOTS LATE.
WAVES CALM TO 2 FEET.
SATURDAY NIGHT
EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST
AFTER MIDNIGHT, THEN BACKING EAST LATE. WAVES CALM TO 2 FEET.
SUNDAY
SOUTHEAST WINDS 10 TO 20 KNOTS BACKING EAST BY MID
AFTERNOON. WAVES BUILDING TO 2 TO 4 FEET.
SUNDAY NIGHT
SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS THROUGH
MIDNIGHT, THEN SHOWERS LIKELY AND 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. WAVES 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
MONDAY NIGHT
SOUTHEAST WINDS 20 TO 30 KNOTS BECOMING SOUTH
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES 3 TO
5 FEET OCCASIONALLY TO 7 FEET.
TUESDAY
SOUTH WINDS 10 TO 20 KNOTS VEERING SOUTHWEST. 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. A CHANCE OF SHOWERS.
WAVES SUBSIDING TO CALM TO 2 FEET.
LSZ267-270800-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
1000 PM EDT FRI JUN 26 2026
REST OF TONIGHT
EAST WINDS LESS THAN 10 KNOTS VEERING
SOUTHEAST AFTER MIDNIGHT, THEN BECOMING NORTH 5 TO 15 KNOTS LATE.
PATCHY FOG BY MIDNIGHT. WAVES CALM TO 2 FEET.
SATURDAY
NORTHEAST WINDS LESS THAN 10 KNOTS BACKING NORTH IN
THE AFTERNOON, THEN INCREASING TO 5 TO 15 KNOTS LATE. WAVES CALM
TO 2 FEET.
SATURDAY NIGHT
EAST WINDS 5 TO 15 KNOTS DIMINISHING TO 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. 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. WAVES
BUILDING TO 2 TO 4 FEET.
MONDAY
SOUTHEAST WINDS 15 TO 25 KNOTS. A CHANCE OF SHOWERS.
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. 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. A CHANCE OF SHOWERS.
WAVES CALM TO 2 FEET.
LSZ261-270800-
MAFOR 2703/
SUPERIOR WEST 11210 14200 11110 11120 11220. WAVES 2 FEET OR LESS
OVERNIGHT AND SATURDAY. WAVES 1 TO 3 FEET SATURDAY EVENING.
SUPERIOR NORTH CENTRAL 13300 11200 12300 12200. WAVES 1 FOOT OR
LESS.
SUPERIOR SOUTH CENTRAL 12300 11300 19304 11300 11200 12210 11310.
WAVES 1 FOOT OR LESS.
SUPERIOR EAST 11300 11500 11800 12100 12800 11100. 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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