488
FZUS63 KMQT 201459
GLFLS
OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
959 AM EST FRI DEC 20 2024
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
A 30.0 INCH LOW OVER OHIO CONTINUES DEPARTING EAST
TODAY WHILE A 30.7 INCH HIGH OVER THE NORTHERN PLAINS MEANDERS
TOWARD NORTHERN ONTARIO AND MINNESOTA, WEAKENING TO 30.6 INCHES
THIS AFTERNOON. THIS HIGH PRESSURE WILL SLOWLY MEANDER EAST
THROUGH THE WEEKEND, TRACKING OVER NORTHERN ONTARIO ON SATURDAY
AND TO THE LOWER GREAT LAKES BY SUNDAY EVENING. ON MONDAY, THE
HIGH WILL BUILD TO 30.7 INCHES OVER THE NORTHEAST U.S. WHILE A
WEAK 30.0 INCH LOW PRESSURE APPROACHES LAKE MICHIGAN. THIS FEATURE
SLIDES INTO THE LOWER GREAT LAKES BY TUESDAY MORNING, FOLLOWED BY
WEAK RIDGING THE REST OF THE DAY.
LSZ162-202300-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
959 AM EST FRI DEC 20 2024 /859 AM CST FRI DEC 20 2024/
REST OF TODAY
NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST BY
MID AFTERNOON. WAVES 2 TO 4 FEET SUBSIDING TO CALM TO 2 FEET,
THEN BUILDING TO 1 TO 3 FEET.
TONIGHT
NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MIDNIGHT, THEN VEERING NORTHEAST LATE. WAVES
SUBSIDING TO CALM TO 2 FEET.
SATURDAY
NORTHEAST WINDS 5 TO 15 KNOTS VEERING EAST BY LATE
MORNING, THEN VEERING SOUTH BY MID AFTERNOON. A SLIGHT CHANCE OF
SNOW SHOWERS. WAVES CALM TO 2 FEET.
SATURDAY NIGHT
SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
SUNDAY
SOUTH WINDS 15 TO 25 KNOTS. WAVES BUILDING TO 2 TO
4 FEET.
SUNDAY NIGHT
SOUTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
MONDAY
NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
TUESDAY
SOUTH WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ263-202300-
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-
959 AM EST FRI DEC 20 2024
REST OF TODAY
NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. WAVES 3 TO 6 FEET OCCASIONALLY TO 8 FEET SUBSIDING TO
2 TO 4 FEET.
TONIGHT
NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 5 TO
15 KNOTS. A SLIGHT CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. WAVES
SUBSIDING TO 1 TO 3 FEET.
SATURDAY
NORTH WINDS 5 TO 15 KNOTS VEERING EAST BY LATE
MORNING, THEN VEERING SOUTH BY MID AFTERNOON. A SLIGHT CHANCE OF
SNOW SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
SATURDAY NIGHT
SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
SUNDAY
SOUTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS
IN THE AFTERNOON. WAVES BUILDING TO 2 TO 4 FEET.
SUNDAY NIGHT
SOUTH WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
MONDAY
NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
TUESDAY
SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ264-202300-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
959 AM EST FRI DEC 20 2024
REST OF TODAY
NORTH WINDS 15 TO 25 KNOTS. ISOLATED SNOW
SHOWERS. FREEZING SPRAY IN THE AFTERNOON. WAVES 3 TO 6 FEET
OCCASIONALLY TO 8 FEET.
TONIGHT
NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 5 TO
15 KNOTS. FREEZING SPRAY IN THE EVENING. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.
SATURDAY
NORTH WINDS 5 TO 15 KNOTS BECOMING NORTHEAST LESS
THAN 10 KNOTS BY LATE MORNING, THEN VEERING SOUTH BY MID
AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS IN THE MORNING. WAVES
SUBSIDING TO CALM TO 2 FEET.
SATURDAY NIGHT
SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
SUNDAY
SOUTH WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 2 TO
4 FEET.
SUNDAY NIGHT
SOUTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
MONDAY
NORTH WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO CALM TO
2 FEET.
TUESDAY
SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ265-202300-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
959 AM EST FRI DEC 20 2024
REST OF TODAY
NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY LATE MORNING, THEN BECOMING NORTHWEST 20 TO 30 KNOTS
BY MID AFTERNOON. ISOLATED SNOW SHOWERS. FREEZING SPRAY IN THE
AFTERNOON. WAVES 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
TONIGHT
NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS LATE. FREEZING SPRAY IN THE EVENING. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
SATURDAY
NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
SATURDAY NIGHT
SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
SUNDAY
SOUTH WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
SUNDAY NIGHT
SOUTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
MONDAY
SOUTH WINDS 10 TO 20 KNOTS BECOMING NORTH 5 TO
15 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES CALM TO 2 FEET.
TUESDAY
NORTH WINDS 5 TO 15 KNOTS VEERING SOUTH. WAVES CALM TO
2 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ266-202300-
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-
959 AM EST FRI DEC 20 2024
REST OF TODAY
NORTH WINDS 20 TO 30 KNOTS BACKING NORTHWEST BY
MID AFTERNOON. SCATTERED SNOW SHOWERS. FREEZING SPRAY IN THE
AFTERNOON. WAVES 3 TO 6 FEET OCCASIONALLY TO 8 FEET BUILDING TO
4 TO 7 FEET OCCASIONALLY TO 9 FEET.
TONIGHT
NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS LATE. FREEZING SPRAY. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
SATURDAY
NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 5 TO
15 KNOTS BY LATE MORNING, THEN BACKING NORTH BY MID AFTERNOON. A
SLIGHT CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
SATURDAY NIGHT
SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
SUNDAY
SOUTH WINDS 15 TO 25 KNOTS. WAVES BUILDING TO 3 TO
5 FEET OCCASIONALLY TO 7 FEET.
SUNDAY NIGHT
SOUTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 2 TO 4 FEET.
MONDAY
SOUTH WINDS 10 TO 20 KNOTS BECOMING NORTH 5 TO
15 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET.
TUESDAY
SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ267-202300-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
959 AM EST FRI DEC 20 2024
REST OF TODAY
NORTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS. SCATTERED SNOW SHOWERS. WAVES 1 TO 3 FEET BUILDING TO 3
TO 6 FEET OCCASIONALLY TO 8 FEET.
TONIGHT
NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MIDNIGHT. FREEZING SPRAY. A CHANCE OF SNOW SHOWERS.
WAVES BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET, THEN
SUBSIDING TO 2 TO 4 FEET.
SATURDAY
NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST BY LATE
MORNING, THEN BECOMING NORTH 5 TO 15 KNOTS BY MID AFTERNOON. A
SLIGHT CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
SATURDAY NIGHT
SOUTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
SUNDAY
SOUTH WINDS 15 TO 25 KNOTS. WAVES BUILDING TO 2 TO
4 FEET.
SUNDAY NIGHT
SOUTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES BUILDING
TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET, THEN SUBSIDING TO 2 TO
4 FEET.
MONDAY
SOUTH WINDS 10 TO 20 KNOTS BACKING NORTHEAST. SNOW
SHOWERS LIKELY, THEN A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO
CALM TO 2 FEET.
TUESDAY
EAST WINDS 5 TO 15 KNOTS VEERING SOUTH. WAVES CALM TO
2 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ261-202300-
MAFOR 2016/
SUPERIOR WEST 11820 11720 13820 11110 12100. WAVES 1 TO 4 FEET
THROUGH TONIGHT. WAVES 2 FEET OR LESS SATURDAY MORNING.
SUPERIOR NORTH CENTRAL 14830 12820 11810 11110. A CHANCE OF SNOW
SHOWERS THIS EVENING. WAVES 3 TO 6 FEET THIS AFTERNOON SUBSIDING
TO 1 TO 4 FEET TONIGHT AND SATURDAY MORNING.
SUPERIOR SOUTH CENTRAL 11830 11730 11740 12830 12820 11810. A
CHANCE OF SNOW SHOWERS TONIGHT. WAVES 3 TO 7 FEET THIS AFTERNOON
AND TONIGHT. WAVES 2 TO 5 FEET SATURDAY MORNING.
SUPERIOR EAST 12830 19837 11840 19847 12830 12820 11110. WAVES 3
TO 7 FEET THIS AFTERNOON AND TONIGHT. WAVES 2 TO 4 FEET SATURDAY
MORNING.
JABLONSKI
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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