928
FZUS63 KMQT 210243
GLFLS
OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
943 PM EST MON JAN 20 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 30.8 INCH HIGH OVER THE CENTRAL PLAINS WILL
CONTINUE TO EXTEND RIDGING UP TO 30.5 INCHES OVER THE WEST HALF OF
LAKE SUPERIOR THROUGH TUESDAY MORNING AS IT MEANDERS TOWARD
KENTUCKY FOR LATE IN THE DAY TUESDAY. MEANWHILE, A 30.3 INCH
TROUGH WILL PERSIST OVER EASTERN LAKE SUPERIOR AND A 29.7 INCH
CLIPPER LOW DEVELOPS OVER THE CANADIAN PRAIRIE. THE LOW WILL
WEAKEN TO AROUND 30 INCHES BY WEDNESDAY AS IT PASSES ACROSS LAKE
SUPERIOR. WEAK TROUGHING WILL PERSIST OVER THE LAKE INTO THURSDAY
MORNING BEFORE A 30.2 INCH RIDGE BUILDS IN FROM THE WEST THURSDAY
NIGHT INTO FRIDAY. THEN, A 29.3 INCH LOW OVER HUDSON BAY DRAGS A
29.9 INCH TROUGH EASTWARD OVER THE LAKE THE REST OF THE WEEKEND.
LSZ162-211045-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
943 PM EST MON JAN 20 2025 /843 PM CST MON JAN 20 2025/
...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH WEDNESDAY
MORNING...
REST OF TONIGHT
WEST WINDS 20 TO 30 KNOTS VEERING NORTHWEST BY
MIDNIGHT, THEN BACKING WEST LATE. A CHANCE OF SNOW SHOWERS. HEAVY
FREEZING SPRAY. WAVES 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
TUESDAY
WEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO 30 KNOTS
BY LATE MORNING, THEN BACKING SOUTHWEST BY MID AFTERNOON.
SCATTERED SNOW SHOWERS. HEAVY FREEZING SPRAY. WAVES BUILDING TO 5
TO 8 FEET OCCASIONALLY TO 10 FEET.
TUESDAY NIGHT
SOUTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15
TO 25 KNOTS. HEAVY FREEZING SPRAY. A CHANCE OF SNOW SHOWERS.
WAVES BUILDING TO 6 TO 9 FEET OCCASIONALLY TO 11 FEET, THEN
SUBSIDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.
WEDNESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST IN
THE AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS IN THE MORNING.
WAVES SUBSIDING TO CALM TO 2 FEET.
WEDNESDAY NIGHT
NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
THURSDAY
NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST IN THE
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
THURSDAY NIGHT
WEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO
1 TO 3 FEET.
FRIDAY
SOUTHWEST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO 3 TO
6 FEET OCCASIONALLY TO 8 FEET.
SATURDAY
WEST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO 3 TO
6 FEET OCCASIONALLY TO 8 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ263-211045-
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-
943 PM EST MON JAN 20 2025
...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH WEDNESDAY
MORNING...
REST OF TONIGHT
NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST
20 TO 30 KNOTS LATE. HEAVY FREEZING SPRAY. SNOW SHOWERS. WAVES
3 TO 6 FEET OCCASIONALLY TO 8 FEET BUILDING TO 5 TO 8 FEET
OCCASIONALLY TO 10 FEET.
TUESDAY
WEST WINDS 20 TO 30 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. HEAVY FREEZING SPRAY. SNOW SHOWERS IN THE MORNING.
SCATTERED SNOW SHOWERS IN THE AFTERNOON. WAVES BUILDING TO 7 TO
10 FEET OCCASIONALLY TO 13 FEET.
TUESDAY NIGHT
SOUTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS LATE. HEAVY FREEZING SPRAY. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 5 TO 8 FEET OCCASIONALLY TO 10 FEET.
WEDNESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST IN
THE AFTERNOON. FREEZING SPRAY IN THE MORNING. A SLIGHT CHANCE OF
SNOW SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.
WEDNESDAY NIGHT
NORTH WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES 2 TO 4 FEET.
THURSDAY
NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS IN THE AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
THURSDAY NIGHT
WEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
FRIDAY
SOUTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 4 TO 7 FEET
OCCASIONALLY TO 9 FEET.
SATURDAY
WEST WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW SHOWERS.
WAVES BUILDING TO 4 TO 8 FEET OCCASIONALLY TO 10 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ264-211045-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
943 PM EST MON JAN 20 2025
...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH WEDNESDAY
MORNING...
REST OF TONIGHT
NORTHWEST WINDS 15 TO 25 KNOTS. HEAVY FREEZING
SPRAY. SNOW SHOWERS. WAVES 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
TUESDAY
WEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS. SNOW SHOWERS. HEAVY FREEZING SPRAY. WAVES BUILDING TO 8
TO 11 FEET OCCASIONALLY TO 14 FEET.
TUESDAY NIGHT
SOUTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS LATE. HEAVY FREEZING SPRAY. SNOW SHOWERS LIKELY IN
THE EVENING. A CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. WAVES
SUBSIDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.
WEDNESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST IN
THE AFTERNOON. FREEZING SPRAY IN THE MORNING. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.
WEDNESDAY NIGHT
NORTH WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
THURSDAY
NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS IN THE AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
THURSDAY NIGHT
NORTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
FRIDAY
WEST WINDS 15 TO 25 KNOTS BECOMING SOUTHWEST 20 TO
30 KNOTS. SNOW SHOWERS LIKELY. WAVES BUILDING TO 5 TO 8 FEET
OCCASIONALLY TO 10 FEET.
SATURDAY
WEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 20 TO
30 KNOTS. A CHANCE OF SNOW SHOWERS. FREEZING SPRAY. WAVES
SUBSIDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ265-211045-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
943 PM EST MON JAN 20 2025
...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH WEDNESDAY
MORNING...
REST OF TONIGHT
WEST WINDS 20 TO 30 KNOTS VEERING NORTHWEST BY
MIDNIGHT, THEN BACKING WEST LATE. HEAVY FREEZING SPRAY. SNOW
SHOWERS. WAVES 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
TUESDAY
WEST WINDS 20 TO 30 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. HEAVY FREEZING SPRAY. SCATTERED SNOW SHOWERS. WAVES
BUILDING TO 5 TO 8 FEET OCCASIONALLY TO 10 FEET, THEN SUBSIDING
TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
TUESDAY NIGHT
SOUTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS LATE. A SLIGHT CHANCE OF SNOW SHOWERS AFTER
MIDNIGHT. WAVES SUBSIDING TO 2 TO 4 FEET.
WEDNESDAY
SOUTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO
20 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
WEDNESDAY NIGHT
NORTHWEST WINDS 15 TO 25 KNOTS. A CHANCE OF
SNOW SHOWERS. WAVES BUILDING TO 3 TO 5 FEET OCCASIONALLY TO
7 FEET.
THURSDAY
NORTHWEST WINDS 15 TO 25 KNOTS. WAVES SUBSIDING TO
2 TO 4 FEET.
THURSDAY NIGHT
WEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
FRIDAY
WEST WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST 15 TO
25 KNOTS. WAVES BUILDING TO 2 TO 4 FEET.
SATURDAY
WEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ266-211045-
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-
943 PM EST MON JAN 20 2025
...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH WEDNESDAY
MORNING...
REST OF TONIGHT
NORTHWEST WINDS 20 TO 30 KNOTS BACKING WEST
LATE. HEAVY FREEZING SPRAY. SNOW SHOWERS. WAVES 5 TO 8 FEET
OCCASIONALLY TO 10 FEET.
TUESDAY
WEST WINDS 20 TO 30 KNOTS. HEAVY FREEZING SPRAY. SNOW
SHOWERS IN THE MORNING. SCATTERED SNOW SHOWERS IN THE AFTERNOON.
WAVES BUILDING TO 7 TO 10 FEET OCCASIONALLY TO 13 FEET.
TUESDAY NIGHT
SOUTHWEST WINDS 20 TO 30 KNOTS. HEAVY FREEZING
SPRAY. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 8 TO 11 FEET
OCCASIONALLY TO 14 FEET, THEN SUBSIDING TO 5 TO 8 FEET
OCCASIONALLY TO 10 FEET.
WEDNESDAY
SOUTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS IN THE AFTERNOON. FREEZING SPRAY IN THE MORNING. A
CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.
WEDNESDAY NIGHT
WEST WINDS 15 TO 25 KNOTS VEERING NORTH AFTER
MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET.
THURSDAY
NORTH WINDS 15 TO 25 KNOTS BACKING NORTHWEST IN THE
AFTERNOON. WAVES SUBSIDING TO 2 TO 4 FEET.
THURSDAY NIGHT
NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST
AFTER MIDNIGHT. WAVES 2 TO 4 FEET.
FRIDAY
WEST WINDS 15 TO 25 KNOTS BACKING SOUTHWEST. A CHANCE
OF SNOW SHOWERS. WAVES BUILDING TO 5 TO 8 FEET OCCASIONALLY TO
10 FEET.
SATURDAY
WEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 20 TO
30 KNOTS. A CHANCE OF SNOW SHOWERS. FREEZING SPRAY. WAVES
BUILDING TO 6 TO 9 FEET OCCASIONALLY TO 11 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ267-211045-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
943 PM EST MON JAN 20 2025
...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH WEDNESDAY
MORNING...
REST OF TONIGHT
NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS BY MIDNIGHT. HEAVY FREEZING SPRAY. SNOW SHOWERS.
WAVES 4 TO 8 FEET OCCASIONALLY TO 10 FEET, THEN BUILDING TO 5 TO 8
FEET OCCASIONALLY TO 10 FEET.
TUESDAY
WEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO 30 KNOTS
BY LATE MORNING, THEN BACKING SOUTHWEST BY MID AFTERNOON. HEAVY
FREEZING SPRAY. SNOW SHOWERS. WAVES BUILDING TO 7 TO 10 FEET
OCCASIONALLY TO 13 FEET.
TUESDAY NIGHT
SOUTHWEST WINDS 20 TO 30 KNOTS. HEAVY FREEZING
SPRAY. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 5 TO
8 FEET OCCASIONALLY TO 10 FEET.
WEDNESDAY
SOUTH WINDS 20 TO 30 KNOTS BECOMING SOUTHWEST 15 TO
25 KNOTS IN THE AFTERNOON. FREEZING SPRAY IN THE MORNING. SNOW
SHOWERS LIKELY. WAVES SUBSIDING TO 2 TO 4 FEET.
WEDNESDAY NIGHT
WEST WINDS 10 TO 20 KNOTS BECOMING NORTH 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 1 TO 3 FEET, THEN BUILDING TO 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
THURSDAY
NORTH WINDS 15 TO 25 KNOTS BACKING NORTHWEST IN THE
AFTERNOON. WAVES SUBSIDING TO 2 TO 4 FEET.
THURSDAY NIGHT
NORTHWEST WINDS 15 TO 25 KNOTS BACKING WEST
AFTER MIDNIGHT. WAVES 2 TO 4 FEET.
FRIDAY
SOUTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 4 TO 7 FEET
OCCASIONALLY TO 9 FEET.
SATURDAY
WEST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS. SNOW SHOWERS. WAVES SUBSIDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET, THEN BUILDING TO 6 TO 9 FEET OCCASIONALLY
TO 11 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ261-211045-
MAFOR 2104/
SUPERIOR WEST...HEAVY FREEZING SPRAY WARNING IN EFFECT...12747
13647 12542 19547 11542. WAVES 3 TO 6 FEET OVERNIGHT. WAVES 5 TO 8
FEET BUILDING TO 6 TO 9 FEET TUESDAY. WAVES 5 TO 9 FEET TUESDAY
EVENING.
SUPERIOR NORTH CENTRAL...HEAVY FREEZING SPRAY WARNING IN EFFECT...
12737 13637 11647 12547. WAVES 3 TO 6 FEET OVERNIGHT. WAVES 3 TO 5
FEET BUILDING TO 7 TO 10 FEET TUESDAY. WAVES 8 TO 11 FEET TUESDAY
EVENING.
SUPERIOR SOUTH CENTRAL...HEAVY FREEZING SPRAY WARNING IN EFFECT...
11747 12647 12642 19647 11642 11532 11530. WAVES 5 TO 8 FEET
OVERNIGHT AND TUESDAY. WAVES 3 TO 6 FEET TUESDAY EVENING.
SUPERIOR EAST...HEAVY FREEZING SPRAY WARNING IN EFFECT...13737
11637 12647 11547 11542. WAVES 6 TO 9 FEET.
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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