175
FZUS63 KMQT 200231
GLFLS
OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
931 PM EST THU DEC 19 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
LOW PRESSURE OF 30.0 INCHES CONTINUES TO MOVE THROUGH
THE LOWER MIDWEST TONIGHT, WITH WEAK TROUGHING OVER LAKE
SUPERIOR. WITH THE LOW DEPARTING TO THE SOUTHEAST, HIGH PRESSURE
TO 30.6 INCHES BUILDS OVER MINNESOTA FRIDAY AFTERNOON. THIS HIGH
PRESSURE WILL SLOWLY MEANDER EAST THROUGH THE WEEKEND, TRACKING
OVER NORTHERN ONTARIO SATURDAY AND TO THE LOWER GREAT LAKES BY
SUNDAY EVENING. MONDAY, THE HIGH WILL BUILD TO 30.7 INCHES OVER
THE NORTHEAST US 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.
LSZ162-201045-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
931 PM EST THU DEC 19 2024 /831 PM CST THU DEC 19 2024/
REST OF TONIGHT
NORTHEAST WINDS 15 TO 25 KNOTS BACKING NORTH
BY MIDNIGHT. SCATTERED SNOW SHOWERS. WAVES 2 TO 4 FEET BUILDING
TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
FRIDAY
NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST. WAVES
SUBSIDING TO CALM TO 2 FEET.
FRIDAY NIGHT
NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS LATE. WAVES BUILDING TO 1 TO 3 FEET, THEN SUBSIDING TO
CALM TO 2 FEET.
SATURDAY
NORTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH IN THE
AFTERNOON. WAVES CALM TO 2 FEET.
SATURDAY NIGHT
SOUTH WINDS 10 TO 20 KNOTS. WAVES CALM TO
2 FEET.
SUNDAY
SOUTH WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.
SUNDAY NIGHT
SOUTH WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
MONDAY
NORTHEAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.
TUESDAY
SOUTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ263-201045-
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-
931 PM EST THU DEC 19 2024
REST OF TONIGHT
EAST WINDS 15 TO 25 KNOTS BACKING NORTH BY
MIDNIGHT. SNOW LIKELY LATE IN THE EVENING, THEN SCATTERED SNOW
SHOWERS AFTER MIDNIGHT. WAVES 2 TO 4 FEET BUILDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET.
FRIDAY
NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. WAVES SUBSIDING TO 1 TO 3 FEET.
FRIDAY NIGHT
NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS LATE. WAVES BUILDING TO 2 TO 4 FEET, THEN SUBSIDING TO
1 TO 3 FEET.
SATURDAY
NORTHEAST WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST LESS
THAN 10 KNOTS IN THE AFTERNOON. WAVES SUBSIDING TO CALM TO
2 FEET.
SATURDAY NIGHT
SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
SUNDAY
SOUTH WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.
SUNDAY NIGHT
SOUTH WINDS 10 TO 20 KNOTS. WAVES 1 TO 3 FEET.
MONDAY
SOUTH WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 5 TO
15 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.
TUESDAY
NORTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTHWEST. WAVES
CALM TO 2 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ264-201045-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
931 PM EST THU DEC 19 2024
REST OF TONIGHT
NORTHEAST WINDS 15 TO 25 KNOTS BACKING NORTH
BY MIDNIGHT. SCATTERED SNOW SHOWERS. WAVES 1 TO 3 FEET BUILDING
TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET, THEN SUBSIDING TO 3 TO
5 FEET OCCASIONALLY TO 7 FEET.
FRIDAY
NORTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS
BY MID AFTERNOON. WAVES SUBSIDING TO 3 TO 5 FEET OCCASIONALLY TO
7 FEET.
FRIDAY NIGHT
NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 5 TO
15 KNOTS. FREEZING SPRAY IN THE EVENING. A SLIGHT CHANCE OF SNOW
SHOWERS. WAVES BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET,
THEN SUBSIDING TO 2 TO 4 FEET.
SATURDAY
NORTH WINDS 5 TO 15 KNOTS DIMINISHING TO LESS THAN
10 KNOTS IN THE 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. WAVES CALM TO
2 FEET.
SUNDAY
SOUTH WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 2 TO
4 FEET.
SUNDAY NIGHT
SOUTH WINDS 10 TO 20 KNOTS. WAVES 2 TO 4 FEET.
MONDAY
SOUTH WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 5 TO
15 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.
TUESDAY
NORTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTHWEST. WAVES
CALM TO 2 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ265-201045-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
931 PM EST THU DEC 19 2024
REST OF TONIGHT
EAST WINDS 5 TO 15 KNOTS BECOMING NORTHEAST
10 TO 20 KNOTS BY MIDNIGHT, THEN BECOMING NORTH 15 TO 25 KNOTS
LATE. SNOW. WAVES CALM TO 2 FEET BUILDING TO 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
FRIDAY
NORTH WINDS 15 TO 25 KNOTS BACKING NORTHWEST BY MID
AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO
3 TO 5 FEET OCCASIONALLY TO 7 FEET.
FRIDAY NIGHT
NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS LATE. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 3 TO
6 FEET OCCASIONALLY TO 8 FEET.
SATURDAY
NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS IN THE 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 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS
IN THE AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
SUNDAY NIGHT
SOUTH WINDS 15 TO 25 KNOTS. WAVES 1 TO 3 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
NORTH WINDS 5 TO 15 KNOTS BACKING SOUTHWEST. WAVES
CALM TO 2 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ266-201045-
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-
931 PM EST THU DEC 19 2024
REST OF TONIGHT
EAST WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST
10 TO 20 KNOTS BY MIDNIGHT, THEN BECOMING NORTH 15 TO 25 KNOTS
LATE. SCATTERED SNOW SHOWERS. WAVES CALM TO 2 FEET BUILDING TO
3 TO 5 FEET OCCASIONALLY TO 7 FEET.
FRIDAY
NORTH WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 20 TO
30 KNOTS BY MID AFTERNOON. A CHANCE OF SNOW SHOWERS. FREEZING
SPRAY IN THE AFTERNOON. WAVES 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
FRIDAY NIGHT
NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS LATE. FREEZING SPRAY. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 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 IN THE 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 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS
IN THE AFTERNOON. WAVES BUILDING TO 3 TO 6 FEET OCCASIONALLY TO
8 FEET.
SUNDAY NIGHT
SOUTH WINDS 15 TO 25 KNOTS. WAVES 3 TO 6 FEET
OCCASIONALLY TO 8 FEET.
MONDAY
SOUTH WINDS 15 TO 25 KNOTS BECOMING NORTHEAST 10 TO
20 KNOTS. 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.
LSZ267-201045-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
931 PM EST THU DEC 19 2024
REST OF TONIGHT
SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH
LATE. SNOW. WAVES CALM TO 2 FEET.
FRIDAY
NORTH WINDS 10 TO 20 KNOTS INCREASING TO 20 TO 30 KNOTS
BY MID AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO
3 TO 5 FEET OCCASIONALLY TO 7 FEET.
FRIDAY NIGHT
NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MIDNIGHT. FREEZING SPRAY. A SLIGHT CHANCE OF SNOW
SHOWERS. WAVES BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 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 IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS IN THE
MORNING. WAVES SUBSIDING TO CALM TO 2 FEET.
SATURDAY NIGHT
NORTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
SUNDAY
SOUTH WINDS 10 TO 20 KNOTS INCREASING TO 20 TO 30 KNOTS
IN THE AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET OCCASIONALLY TO
7 FEET.
SUNDAY NIGHT
SOUTH WINDS 20 TO 30 KNOTS. WAVES BUILDING TO
3 TO 6 FEET OCCASIONALLY TO 8 FEET.
MONDAY
SOUTH WINDS 15 TO 25 KNOTS BECOMING EAST 10 TO
20 KNOTS. SNOW SHOWERS LIKELY, THEN A CHANCE OF SNOW SHOWERS.
WAVES SUBSIDING TO CALM TO 2 FEET.
TUESDAY
EAST WINDS 10 TO 20 KNOTS VEERING SOUTH. WAVES CALM TO
2 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ261-201045-
MAFOR 2004/
SUPERIOR WEST 11140 19147 12830 12820 11720 12820. WAVES 3 TO 6
FEET OVERNIGHT. WAVES 3 TO 5 FEET SUBSIDING TO 1 TO 3 FEET
FRIDAY. WAVES 1 TO 3 FEET FRIDAY EVENING.
SUPERIOR NORTH CENTRAL 11830 19837 15830 11830. WAVES 2 TO 4 FEET
BUILDING TO 3 TO 5 FEET OVERNIGHT. WAVES 3 TO 6 FEET FRIDAY AND
FRIDAY EVENING.
SUPERIOR SOUTH CENTRAL 11217 11137 11840 19847 11830 13730 11830.
A CHANCE OF SNOW LATE THIS EVENING. WAVES 1 TO 2 FEET BUILDING TO
3 TO 5 FEET OVERNIGHT. WAVES 3 TO 6 FEET FRIDAY. WAVES 3 TO 6
FEET BUILDING TO 4 TO 7 FEET FRIDAY EVENING.
SUPERIOR EAST 12310 19317 11830 19837 14830 11830. WAVES 1 TO 3
FEET OVERNIGHT. WAVES 2 TO 4 FEET BUILDING TO 3 TO 5 FEET FRIDAY.
WAVES 4 TO 7 FEET FRIDAY 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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