943
FZUS63 KMQT 310301
GLFLS
OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
1000 PM EST TUE DEC 30 2025
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 LOW OF 28.7 INCHES RETROGRADES FROM EASTERN QUEBEC TOWARD HUDSON
BAY THROUGH TONIGHT AS IT STRENGTHENS TO 28.3 INCHES. MEANWHILE A
30.7 INCH RIDGE WILL BUILD FROM THE CANADIAN PRAIRIES INTO THE UPPER
MISSISSIPPI VALLEY WEDNESDAY INTO THURSDAY WHILE WEAKENING TO 30.2
INCHES. THIS CONFIGURATION WILL PERSIST INTO FRIDAY.
LSZ162-310900-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
1000 PM EST TUE DEC 30 2025 /900 PM CST TUE DEC 30 2025/
REST OF TONIGHT
NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST
BY MIDNIGHT, THEN INCREASING TO 15 TO 25 KNOTS LATE. A SLIGHT
CHANCE OF SNOW SHOWERS. WAVES CALM TO 2 FEET BUILDING TO 1 TO
3 FEET.
WEDNESDAY
NORTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS IN THE
MORNING. WAVES BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
WEDNESDAY NIGHT
NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS BY MIDNIGHT. WAVES SUBSIDING TO 2 TO 4 FEET, THEN
BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
THURSDAY
WEST WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW SHOWERS.
WAVES 2 TO 4 FEET.
THURSDAY NIGHT
WEST WINDS 15 TO 25 KNOTS. A SLIGHT CHANCE OF
SNOW SHOWERS IN THE EVENING. WAVES SUBSIDING TO 1 TO 3 FEET, THEN
BUILDING TO 2 TO 4 FEET.
FRIDAY
NORTHWEST WINDS 15 TO 25 KNOTS BACKING WEST IN THE
AFTERNOON. WAVES 2 TO 4 FEET.
FRIDAY NIGHT
NORTHWEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING
TO CALM TO 2 FEET.
SATURDAY
NORTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
SUNDAY
NORTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES CALM TO 2 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ263-310900-
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 EST TUE DEC 30 2025
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 7 AM EST WEDNESDAY
THROUGH THURSDAY EVENING...
REST OF TONIGHT
NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST
15 TO 25 KNOTS LATE. A CHANCE OF SNOW SHOWERS. WAVES 1 TO 3 FEET
BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
WEDNESDAY
NORTHWEST WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW
SHOWERS IN THE MORNING. HEAVY FREEZING SPRAY. WAVES BUILDING TO
5 TO 8 FEET OCCASIONALLY TO 10 FEET.
WEDNESDAY NIGHT
NORTHWEST WINDS TO 30 KNOTS WITH A FEW GALE
FORCE GUSTS TO 35 KNOTS POSSIBLE DIMINISHING TO 20 TO 30 KNOTS BY
MIDNIGHT. HEAVY FREEZING SPRAY. WAVES SUBSIDING TO 4 TO 8 FEET
OCCASIONALLY TO 10 FEET.
THURSDAY
WEST WINDS 20 TO 30 KNOTS. HEAVY FREEZING SPRAY. A
CHANCE OF SNOW SHOWERS IN THE AFTERNOON. WAVES 5 TO 8 FEET
OCCASIONALLY TO 10 FEET.
THURSDAY NIGHT
WEST WINDS 20 TO 30 KNOTS VEERING NORTHWEST
AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS IN THE EVENING.
FREEZING SPRAY. WAVES SUBSIDING TO 4 TO 7 FEET OCCASIONALLY TO
9 FEET.
FRIDAY
NORTHWEST WINDS 20 TO 30 KNOTS. HEAVY FREEZING SPRAY IN
THE MORNING. WAVES 4 TO 7 FEET OCCASIONALLY TO 9 FEET.
FRIDAY NIGHT
NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 2 TO 4 FEET.
SATURDAY
NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.
SUNDAY
NORTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ264-310900-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
1000 PM EST TUE DEC 30 2025
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 7 AM EST WEDNESDAY
THROUGH THURSDAY EVENING...
...GALE WARNING IN EFFECT FROM 10 AM EST WEDNESDAY THROUGH
THURSDAY EVENING...
REST OF TONIGHT
NORTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS BY MIDNIGHT, THEN BECOMING NORTHWEST 20 TO 30 KNOTS
LATE. A CHANCE OF SNOW SHOWERS. HEAVY FREEZING SPRAY AFTER
MIDNIGHT. WAVES 3 TO 5 FEET OCCASIONALLY TO 7 FEET BUILDING TO
4 TO 7 FEET OCCASIONALLY TO 9 FEET.
WEDNESDAY
NORTHWEST WINDS 20 TO 30 KNOTS INCREASING TO GALES
TO 35 KNOTS. HEAVY FREEZING SPRAY. A SLIGHT CHANCE OF SNOW
SHOWERS. WAVES BUILDING TO 8 TO 11 FEET OCCASIONALLY TO 14 FEET.
WEDNESDAY NIGHT
NORTHWEST GALES TO 35 KNOTS. HEAVY FREEZING
SPRAY. WAVES SUBSIDING TO 7 TO 10 FEET OCCASIONALLY TO 13 FEET,
THEN BUILDING TO 8 TO 11 FEET OCCASIONALLY TO 14 FEET.
THURSDAY
NORTHWEST GALES TO 35 KNOTS BECOMING WEST 20 TO
30 KNOTS IN THE AFTERNOON. HEAVY FREEZING SPRAY. A CHANCE OF SNOW
SHOWERS IN THE AFTERNOON. WAVES SUBSIDING TO 6 TO 9 FEET
OCCASIONALLY TO 11 FEET.
THURSDAY NIGHT
WEST WINDS 20 TO 30 KNOTS VEERING NORTHWEST
AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS IN THE EVENING.
HEAVY FREEZING SPRAY. WAVES SUBSIDING TO 5 TO 8 FEET OCCASIONALLY
TO 10 FEET, THEN BUILDING TO 6 TO 9 FEET OCCASIONALLY TO 11 FEET.
FRIDAY
NORTHWEST GALES TO 35 KNOTS. HEAVY FREEZING SPRAY.
WAVES BUILDING TO 6 TO 10 FEET OCCASIONALLY TO 13 FEET.
FRIDAY NIGHT
NORTHWEST GALES TO 35 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. HEAVY FREEZING SPRAY IN THE EVENING.
WAVES SUBSIDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
SATURDAY
NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.
SUNDAY
NORTHWEST WINDS 5 TO 15 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ265-310900-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
1000 PM EST TUE DEC 30 2025
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 7 AM EST WEDNESDAY
THROUGH THURSDAY EVENING...
...GALE WARNING IN EFFECT FROM 10 AM EST WEDNESDAY THROUGH
THURSDAY EVENING...
REST OF TONIGHT
NORTHWEST WINDS 15 TO 25 KNOTS INCREASING TO
20 TO 30 KNOTS LATE. A CHANCE OF SNOW SHOWERS. FREEZING SPRAY
AFTER MIDNIGHT. WAVES 2 TO 4 FEET BUILDING TO 4 TO 7 FEET
OCCASIONALLY TO 9 FEET.
WEDNESDAY
NORTHWEST GALES TO 40 KNOTS. HEAVY FREEZING SPRAY. A
CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 9 TO 12 FEET
OCCASIONALLY TO 15 FEET.
WEDNESDAY NIGHT
NORTHWEST GALES TO 40 KNOTS. A SLIGHT CHANCE
OF SNOW SHOWERS IN THE EVENING. HEAVY FREEZING SPRAY. WAVES
SUBSIDING TO 8 TO 11 FEET OCCASIONALLY TO 14 FEET.
THURSDAY
NORTHWEST GALES TO 40 KNOTS BECOMING WEST GALES TO
35 KNOTS IN THE AFTERNOON. HEAVY FREEZING SPRAY. A CHANCE OF SNOW
SHOWERS IN THE AFTERNOON. WAVES SUBSIDING TO 5 TO 8 FEET
OCCASIONALLY TO 10 FEET.
THURSDAY NIGHT
WEST GALES TO 35 KNOTS VEERING NORTHWEST AFTER
MIDNIGHT. HEAVY FREEZING SPRAY. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 6 TO 9 FEET OCCASIONALLY TO 11 FEET.
FRIDAY
NORTHWEST GALES TO 40 KNOTS. HEAVY FREEZING SPRAY.
WAVES 6 TO 9 FEET OCCASIONALLY TO 11 FEET.
FRIDAY NIGHT
NORTHWEST GALES TO 35 KNOTS DIMINISHING TO 20 TO
30 KNOTS AFTER MIDNIGHT. FREEZING SPRAY IN THE EVENING. WAVES
SUBSIDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
SATURDAY
NORTHWEST WINDS 15 TO 25 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
SUNDAY
WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS.
A CHANCE OF SNOW SHOWERS. WAVES CALM TO 2 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ266-310900-
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 EST TUE DEC 30 2025
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 7 AM EST WEDNESDAY
THROUGH THURSDAY EVENING...
...GALE WARNING IN EFFECT FROM 10 AM EST WEDNESDAY THROUGH
THURSDAY EVENING...
REST OF TONIGHT
NORTHWEST WINDS 20 TO 30 KNOTS. FREEZING
SPRAY. SNOW SHOWERS LIKELY. WAVES 4 TO 8 FEET OCCASIONALLY TO
10 FEET.
WEDNESDAY
NORTHWEST GALES TO 40 KNOTS. HEAVY FREEZING SPRAY.
SNOW SHOWERS LIKELY IN THE MORNING. A CHANCE OF SNOW SHOWERS IN
THE AFTERNOON. WAVES BUILDING TO 12 TO 17 FEET OCCASIONALLY TO
21 FEET.
WEDNESDAY NIGHT
NORTHWEST GALES TO 40 KNOTS. HEAVY FREEZING
SPRAY. SNOW SHOWERS LIKELY IN THE EVENING. A CHANCE OF SNOW
SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO 11 TO 15 FEET
OCCASIONALLY TO 19 FEET.
THURSDAY
NORTHWEST GALES TO 35 KNOTS BACKING WEST IN THE
AFTERNOON. HEAVY FREEZING SPRAY. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 10 TO 14 FEET OCCASIONALLY TO 18 FEET.
THURSDAY NIGHT
WEST GALES TO 35 KNOTS VEERING NORTHWEST AFTER
MIDNIGHT. FREEZING SPRAY. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 8 TO 11 FEET OCCASIONALLY TO 14 FEET.
FRIDAY
NORTHWEST GALES TO 35 KNOTS. HEAVY FREEZING SPRAY. A
CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 10 TO 14 FEET
OCCASIONALLY TO 18 FEET.
FRIDAY NIGHT
NORTHWEST GALES TO 35 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. FREEZING SPRAY. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 5 TO 8 FEET OCCASIONALLY TO 10 FEET.
SATURDAY
NORTHWEST WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.
SUNDAY
WEST WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW SHOWERS.
WAVES 2 TO 4 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ267-310900-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
1000 PM EST TUE DEC 30 2025
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 7 AM EST WEDNESDAY
THROUGH THURSDAY EVENING...
...GALE WARNING IN EFFECT FROM 10 AM EST WEDNESDAY THROUGH
THURSDAY EVENING...
REST OF TONIGHT
NORTHWEST WINDS 20 TO 30 KNOTS. FREEZING
SPRAY. A CHANCE OF SNOW SHOWERS. WAVES 4 TO 8 FEET OCCASIONALLY
TO 10 FEET.
WEDNESDAY
NORTHWEST GALES TO 35 KNOTS. HEAVY FREEZING SPRAY.
SNOW SHOWERS LIKELY. WAVES BUILDING TO 11 TO 15 FEET OCCASIONALLY
TO 19 FEET.
WEDNESDAY NIGHT
NORTHWEST GALES TO 40 KNOTS. HEAVY FREEZING
SPRAY. SNOW SHOWERS LIKELY IN THE EVENING. A CHANCE OF SNOW
SHOWERS AFTER MIDNIGHT. WAVES BUILDING TO 12 TO 17 FEET
OCCASIONALLY TO 21 FEET, THEN SUBSIDING TO 11 TO 15 FEET
OCCASIONALLY TO 19 FEET.
THURSDAY
NORTHWEST GALES TO 35 KNOTS BACKING WEST IN THE
AFTERNOON. HEAVY FREEZING SPRAY. A CHANCE OF SNOW SHOWERS IN THE
MORNING. SNOW SHOWERS LIKELY IN THE AFTERNOON. WAVES SUBSIDING TO
10 TO 14 FEET OCCASIONALLY TO 18 FEET.
THURSDAY NIGHT
WEST GALES TO 35 KNOTS VEERING NORTHWEST AFTER
MIDNIGHT. FREEZING SPRAY. SNOW SHOWERS LIKELY IN THE EVENING. A
CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO 9 TO
12 FEET OCCASIONALLY TO 15 FEET.
FRIDAY
NORTHWEST GALES TO 35 KNOTS. FREEZING SPRAY. A CHANCE
OF SNOW SHOWERS IN THE MORNING. SNOW SHOWERS LIKELY IN THE
AFTERNOON. WAVES BUILDING TO 10 TO 14 FEET OCCASIONALLY TO
18 FEET.
FRIDAY NIGHT
NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS AFTER MIDNIGHT. FREEZING SPRAY. SNOW SHOWERS
LIKELY IN THE EVENING. A CHANCE OF SNOW SHOWERS AFTER MIDNIGHT.
WAVES SUBSIDING TO 5 TO 8 FEET OCCASIONALLY TO 10 FEET.
SATURDAY
NORTHWEST WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.
SUNDAY
NORTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 15 TO
25 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES 2 TO 4 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ261-310900-
MAFOR 3104/
SUPERIOR WEST...HEAVY FREEZING SPRAY WARNING IN EFFECT...12720
15730. A CHANCE OF SNOW SHOWERS LATE THIS EVENING. WAVES 1 TO 3
FEET OVERNIGHT. WAVES 2 TO 4 FEET BUILDING TO 3 TO 6 FEET
WEDNESDAY. WAVES 3 TO 5 FEET WEDNESDAY EVENING.
SUPERIOR NORTH CENTRAL...GALE WARNING IN EFFECT...HEAVY FREEZING
SPRAY WARNING IN EFFECT...11830 11740 12742 14752. A CHANCE OF
SNOW SHOWERS OVERNIGHT. WAVES 3 TO 6 FEET BUILDING TO 5 TO 7 FEET
OVERNIGHT. WAVES 6 TO 10 FEET BUILDING TO 8 TO 11 FEET WEDNESDAY.
WAVES 8 TO 11 FEET WEDNESDAY EVENING.
SUPERIOR SOUTH CENTRAL...GALE WARNING IN EFFECT...HEAVY FREEZING
SPRAY WARNING IN EFFECT...11737 11747 11740 11742 14752. WAVES 3
TO 6 FEET BUILDING TO 4 TO 7 FEET OVERNIGHT. WAVES 6 TO 9 FEET
BUILDING TO 10 TO 14 FEET WEDNESDAY. WAVES 10 TO 14 FEET
WEDNESDAY EVENING.
SUPERIOR EAST...GALE WARNING IN EFFECT...HEAVY FREEZING SPRAY
WARNING IN EFFECT...11730 12740 12747 13757. WAVES 4 TO 7 FEET
OVERNIGHT. WAVES 5 TO 8 FEET BUILDING TO 10 TO 13 FEET WEDNESDAY.
WAVES 10 TO 15 FEET WEDNESDAY EVENING.
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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