331
FZUS63 KMQT 210251
GLFLS
OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
951 PM 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
30.6 INCH HIGH PRESSURE CENTERED OVER THE NORTHERN
PLAINS IS EXTENDING RIDGING OVER LAKE SUPERIOR THIS EVENING. 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 RIDGING BUILDING TO
30.3 INCHES THE REST OF THE DAY THROUGH WEDNESDAY.
LSZ162-211100-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
951 PM EST FRI DEC 20 2024 /851 PM CST FRI DEC 20 2024/
REST OF TONIGHT
NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHEAST
5 TO 15 KNOTS LATE. WAVES 1 TO 3 FEET SUBSIDING TO CALM TO
2 FEET.
SATURDAY
NORTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH. ISOLATED
SNOW SHOWERS. WAVES CALM TO 2 FEET.
SATURDAY NIGHT
SOUTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS LATE. ISOLATED SNOW SHOWERS 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. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
MONDAY
NORTHEAST WINDS 5 TO 15 KNOTS BECOMING NORTH 10 TO
20 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS IN THE
MORNING. WAVES CALM TO 2 FEET.
MONDAY NIGHT
NORTH WINDS 5 TO 15 KNOTS VEERING NORTHEAST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
TUESDAY
SOUTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.
WEDNESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH. WAVES
CALM TO 2 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ263-211100-
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-
951 PM EST FRI DEC 20 2024
REST OF TONIGHT
NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 5 TO
15 KNOTS. ISOLATED SNOW SHOWERS. WAVES 2 TO 4 FEET SUBSIDING TO
1 TO 3 FEET.
SATURDAY
NORTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH BY MID
AFTERNOON. ISOLATED SNOW SHOWERS. WAVES CALM TO 2 FEET.
SATURDAY NIGHT
SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS BY MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
SUNDAY
SOUTH WINDS 15 TO 25 KNOTS. WAVES BUILDING TO 3 TO
5 FEET OCCASIONALLY TO 7 FEET, THEN SUBSIDING TO 2 TO 4 FEET.
SUNDAY NIGHT
SOUTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
MONDAY
SOUTH WINDS 5 TO 15 KNOTS BACKING NORTH IN THE
AFTERNOON. A CHANCE OF SNOW SHOWERS IN THE MORNING. WAVES CALM TO
2 FEET.
MONDAY NIGHT
NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET, THEN
SUBSIDING TO CALM TO 2 FEET.
TUESDAY
SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
WEDNESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH. WAVES
BUILDING TO 1 TO 3 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ264-211100-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
951 PM EST FRI DEC 20 2024
REST OF TONIGHT
NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 5 TO
15 KNOTS. FREEZING SPRAY LATE IN THE EVENING. SCATTERED SNOW
SHOWERS. WAVES 3 TO 6 FEET OCCASIONALLY TO 8 FEET 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. ISOLATED 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 LATE. WAVES BUILDING TO 1 TO 3 FEET.
SUNDAY
SOUTH WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 3 TO
5 FEET OCCASIONALLY TO 7 FEET.
SUNDAY NIGHT
SOUTH WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.
MONDAY
SOUTH WINDS 5 TO 15 KNOTS BACKING NORTH IN THE
AFTERNOON. A CHANCE OF SNOW SHOWERS IN THE MORNING. WAVES
SUBSIDING TO CALM TO 2 FEET.
MONDAY NIGHT
NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET, THEN
SUBSIDING TO CALM TO 2 FEET.
TUESDAY
SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
WEDNESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH. WAVES
BUILDING TO 1 TO 3 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ265-211100-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
951 PM EST FRI DEC 20 2024
REST OF TONIGHT
NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO
10 TO 20 KNOTS LATE. FREEZING SPRAY LATE IN THE EVENING.
SCATTERED SNOW SHOWERS. WAVES 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
SATURDAY
NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY LATE MORNING, THEN BACKING WEST BY MID AFTERNOON.
ISOLATED SNOW SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
SATURDAY NIGHT
SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING SOUTH
10 TO 20 KNOTS BY MIDNIGHT. WAVES CALM TO 2 FEET.
SUNDAY
SOUTH WINDS 15 TO 25 KNOTS. WAVES BUILDING TO 2 TO
4 FEET.
SUNDAY NIGHT
SOUTH WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.
MONDAY
SOUTH WINDS 5 TO 15 KNOTS BECOMING NORTH 10 TO 20 KNOTS
IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO
CALM TO 2 FEET.
MONDAY NIGHT
NORTH WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
TUESDAY
SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
WEDNESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH. WAVES
CALM TO 2 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ266-211100-
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-
951 PM EST FRI DEC 20 2024
REST OF TONIGHT
NORTH WINDS TO 30 KNOTS WITH A FEW GALE FORCE
GUSTS TO 35 KNOTS POSSIBLE EARLY, DIMINISHING TO 15 TO 25 KNOTS.
FREEZING SPRAY. SCATTERED SNOW SHOWERS. WAVES 5 TO 8 FEET
OCCASIONALLY TO 10 FEET SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO
8 FEET.
SATURDAY
NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. ISOLATED SNOW SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET.
SATURDAY NIGHT
SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS LATE. ISOLATED SNOW SHOWERS AFTER MIDNIGHT. WAVES
BUILDING TO 1 TO 3 FEET.
SUNDAY
SOUTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO 30 KNOTS
IN THE AFTERNOON. ISOLATED SNOW SHOWERS. WAVES BUILDING TO 5 TO
8 FEET OCCASIONALLY TO 10 FEET.
SUNDAY NIGHT
SOUTH WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
MONDAY
SOUTH WINDS 15 TO 25 KNOTS BECOMING NORTHEAST 10 TO
20 KNOTS IN THE AFTERNOON. SNOW SHOWERS LIKELY IN THE MORNING,
THEN A CHANCE OF SNOW SHOWERS IN THE AFTERNOON. WAVES SUBSIDING
TO 1 TO 3 FEET.
MONDAY NIGHT
NORTH WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
TUESDAY
SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST. WAVES
CALM TO 2 FEET.
WEDNESDAY
SOUTH WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ267-211100-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
951 PM EST FRI DEC 20 2024
REST OF TONIGHT
NORTH WINDS TO 30 KNOTS WITH A FEW GALE FORCE
GUSTS TO 35 KNOTS POSSIBLE EARLY, DIMINISHING TO 15 TO 25 KNOTS.
FREEZING SPRAY. SCATTERED SNOW SHOWERS. WAVES 4 TO 8 FEET
OCCASIONALLY TO 10 FEET, THEN SUBSIDING TO 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
SATURDAY
NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. ISOLATED SNOW SHOWERS. WAVES SUBSIDING
TO CALM TO 2 FEET.
SATURDAY NIGHT
NORTH WINDS 5 TO 15 KNOTS VEERING SOUTH BY
MIDNIGHT, THEN INCREASING TO 10 TO 20 KNOTS LATE. ISOLATED SNOW
SHOWERS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
SUNDAY
SOUTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO 30 KNOTS
IN THE AFTERNOON. ISOLATED SNOW SHOWERS. WAVES BUILDING TO 3 TO
6 FEET OCCASIONALLY TO 8 FEET.
SUNDAY NIGHT
SOUTH WINDS 20 TO 30 KNOTS. SCATTERED SNOW
SHOWERS IN THE EVENING, THEN SNOW SHOWERS LIKELY AFTER MIDNIGHT.
WAVES BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET, THEN
SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
MONDAY
SOUTH WINDS 15 TO 25 KNOTS BECOMING SOUTHEAST 10 TO
20 KNOTS IN THE AFTERNOON. SNOW SHOWERS. WAVES SUBSIDING TO 1 TO
3 FEET.
MONDAY NIGHT
NORTHEAST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING
TO CALM TO 2 FEET.
TUESDAY
SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
WEDNESDAY
SOUTH WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ261-211100-
MAFOR 2104/
SUPERIOR WEST 11820 12110 11100 11300 11400 12410. WAVES 2 TO 4
FEET SUBSIDING TO 1 TO 3 FEET OVERNIGHT. WAVES 2 FEET OR LESS
SATURDAY AND SATURDAY EVENING.
SUPERIOR NORTH CENTRAL 11830 19837 11820 19827 11810 19817 11810
12800 11500 11400. WAVES 3 TO 6 FEET OVERNIGHT. WAVES 2 TO 4 FEET
SUBSIDING TO 1 TO 3 FEET SATURDAY. WAVES 1 FOOT OR LESS SATURDAY
EVENING.
SUPERIOR SOUTH CENTRAL 11847 11827 11820 19827 12810 19817 11800
11600 11500. WAVES 4 TO 7 FEET SUBSIDING TO 3 TO 6 FEET
OVERNIGHT. WAVES 3 TO 5 FEET SUBSIDING TO 1 TO 2 FEET SATURDAY.
WAVES 1 TO 2 FEET SATURDAY EVENING.
SUPERIOR EAST 11840 19847 11830 12820 11810 12800 11100. WAVES 4
TO 7 FEET SUBSIDING TO 3 TO 5 FEET OVERNIGHT. WAVES 2 TO 4 FEET
SUBSIDING TO 1 TO 3 FEET SATURDAY. WAVES 1 FOOT OR LESS SATURDAY
EVENING.
LC
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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