699
FZUS63 KMQT 220850
GLFLS
OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
350 AM EST WED JAN 22 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
LAKE SUPERIOR IS CURRENTLY BETWEEN A 30.6 INCH HIGH
OVER THE APPALACHAINS AND A 29.8 INCH CLIPPER LOW OVER NORTHERN
MINNESOTA. THROUGHOUT TODAY, THE HIGH WEAKENS TO 30.5 INCHES AS IT
APPROACHES THE EAST COAST WHILE THE LOW WEAKENS TO 29.9 INCHES AS
IT PASSES DIRECTLY OVER LAKE SUPERIOR. THE LOW THEN TRANSITIONS
TO A 30.0 INCH TROUGH BY THE TIME IT REACHES THE LOWER GREAT LAKES
BY LATE THURSDAY. IN ITS WAKE, A 30.6 INCH HIGH PRESSURE RIDGE
MOVING OUT OVER THE PLAINS ON THURSDAY WILL WEAKEN TO 30.4 INCHES
AS IT MOVES TO THE MISSISSIPPI RIVER VALLEY DURING THURSDAY NIGHT
AND THEN TO THE SOUTHEAST U.S. ON SATURDAY. MEANWHILE, A 29.2 INCH
LOW PRESSURE TRACKING EAST TO HUDSON BAY WILL SWING A 29.8 INCH
TROUGH ACROSS THE DAKOTAS ON FRIDAY AND TO LAKE SUPERIOR ON
SATURDAY. 30.1 INCH RIDGING QUICKLY PASSES OVER LAKE SUPERIOR ON
SUNDAY AHEAD OF ANOTHER TROUGH PIVOTING ACROSS THE LAKE SUNDAY
NIGHT AT 29.9 INCHES.
LSZ162-221700-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
350 AM EST WED JAN 22 2025 /250 AM CST WED JAN 22 2025/
...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 7 AM EST /6 AM
CST/ THIS MORNING...
EARLY THIS MORNING
SOUTHWEST WINDS TO 30 KNOTS WITH A FEW GALE
FORCE GUSTS TO 35 KNOTS POSSIBLE. HEAVY FREEZING SPRAY. SNOW
SHOWERS LIKELY. WAVES 6 TO 9 FEET OCCASIONALLY TO 11 FEET.
TODAY
SOUTHWEST WINDS 20 TO 30 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS BY LATE MORNING, THEN VEERING NORTH BY MID AFTERNOON.
FREEZING SPRAY IN THE MORNING. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 2 TO 4 FEET.
TONIGHT
NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET, THEN SUBSIDING TO
2 TO 4 FEET.
THURSDAY
NORTHWEST WINDS 15 TO 25 KNOTS. A SLIGHT CHANCE OF
SNOW SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.
THURSDAY NIGHT
NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST
AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET, THEN BUILDING
TO 2 TO 4 FEET.
FRIDAY
SOUTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS IN THE AFTERNOON. WAVES BUILDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET.
FRIDAY NIGHT
SOUTHWEST WINDS 20 TO 30 KNOTS BECOMING WEST
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
SATURDAY
WEST GALES TO 35 KNOTS. 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.
SUNDAY
WEST WINDS 20 TO 30 KNOTS. WAVES BUILDING TO 4 TO
7 FEET OCCASIONALLY TO 9 FEET, THEN SUBSIDING TO 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
LSZ263-221700-
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-
350 AM EST WED JAN 22 2025
...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 7 AM EST THIS
MORNING...
EARLY THIS MORNING
SOUTHWEST WINDS 20 TO 30 KNOTS. HEAVY
FREEZING SPRAY. SNOW SHOWERS LIKELY. WAVES 7 TO 10 FEET
OCCASIONALLY TO 13 FEET.
TODAY
SOUTHWEST WINDS 20 TO 30 KNOTS VEERING NORTHWEST BY LATE
MORNING, THEN VEERING NORTH BY MID AFTERNOON. FREEZING SPRAY IN
THE MORNING. SNOW SHOWERS LIKELY IN THE MORNING, THEN A CHANCE OF
SNOW SHOWERS IN THE AFTERNOON. WAVES SUBSIDING TO 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
TONIGHT
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 8 FEET OCCASIONALLY TO 10 FEET.
THURSDAY
NORTH WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 2 TO
4 FEET.
THURSDAY NIGHT
NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST
AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES 2 TO
4 FEET.
FRIDAY
SOUTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS IN THE AFTERNOON. FREEZING SPRAY IN THE MORNING. WAVES
BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.
FRIDAY NIGHT
SOUTHWEST GALES TO 35 KNOTS BECOMING WEST 20 TO
30 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 4 TO 8 FEET
OCCASIONALLY TO 10 FEET.
SATURDAY
WEST GALES TO 35 KNOTS VEERING NORTHWEST. A CHANCE OF
SNOW SHOWERS. FREEZING SPRAY. WAVES SUBSIDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET, THEN BUILDING TO 5 TO 8 FEET OCCASIONALLY
TO 10 FEET.
SUNDAY
WEST WINDS 20 TO 30 KNOTS. FREEZING SPRAY. WAVES
BUILDING TO 6 TO 9 FEET OCCASIONALLY TO 11 FEET, THEN SUBSIDING
TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
LSZ264-221700-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
350 AM EST WED JAN 22 2025
...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 7 AM EST THIS
MORNING...
EARLY THIS MORNING
SOUTHWEST WINDS 20 TO 30 KNOTS. HEAVY
FREEZING SPRAY. SNOW SHOWERS LIKELY. WAVES 6 TO 9 FEET
OCCASIONALLY TO 11 FEET.
TODAY
SOUTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY LATE MORNING, THEN BECOMING NORTH 20 TO 30 KNOTS BY
MID AFTERNOON. FREEZING SPRAY. SNOW SHOWERS LIKELY IN THE
MORNING. A CHANCE OF SNOW SHOWERS IN THE AFTERNOON. WAVES
SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
TONIGHT
NORTH WINDS TO 30 KNOTS WITH A FEW GALE FORCE GUSTS TO
35 KNOTS POSSIBLE DIMINISHING TO 20 TO 30 KNOTS LATE. HEAVY
FREEZING SPRAY. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 7 TO
10 FEET OCCASIONALLY TO 13 FEET, THEN SUBSIDING TO 5 TO 8 FEET
OCCASIONALLY TO 10 FEET.
THURSDAY
NORTH WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS. FREEZING SPRAY IN THE MORNING. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.
THURSDAY NIGHT
NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST
AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES SUBSIDING
TO 1 TO 3 FEET.
FRIDAY
SOUTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS IN THE AFTERNOON. FREEZING SPRAY. WAVES BUILDING TO 5 TO
8 FEET OCCASIONALLY TO 10 FEET.
FRIDAY NIGHT
SOUTHWEST WINDS 20 TO 30 KNOTS VEERING WEST AFTER
MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 4 TO
8 FEET OCCASIONALLY TO 10 FEET.
SATURDAY
WEST WINDS 20 TO 30 KNOTS VEERING NORTHWEST. A CHANCE
OF SNOW SHOWERS. FREEZING SPRAY. WAVES SUBSIDING TO 4 TO 8 FEET
OCCASIONALLY TO 10 FEET.
SUNDAY
WEST WINDS 20 TO 30 KNOTS. 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.
LSZ265-221700-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
350 AM EST WED JAN 22 2025
...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 7 AM EST THIS
MORNING...
EARLY THIS MORNING
SOUTHWEST WINDS 20 TO 30 KNOTS. HEAVY
FREEZING SPRAY. SNOW SHOWERS LIKELY. WAVES 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
TODAY
SOUTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY LATE MORNING, THEN VEERING WEST BY MID AFTERNOON. A
CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.
TONIGHT
NORTHWEST WINDS 20 TO 30 KNOTS BECOMING NORTH TO
30 KNOTS WITH A FEW GALE FORCE GUSTS TO 35 KNOTS POSSIBLE BY
MIDNIGHT, THEN DIMINISHING TO 20 TO 30 KNOTS LATE. FREEZING
SPRAY. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 7 TO 10 FEET
OCCASIONALLY TO 13 FEET.
THURSDAY
NORTH WINDS 20 TO 30 KNOTS BACKING NORTHWEST.
FREEZING SPRAY IN THE MORNING. SNOW SHOWERS LIKELY IN THE
MORNING, THEN A CHANCE OF SNOW SHOWERS IN THE AFTERNOON. WAVES
SUBSIDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
THURSDAY NIGHT
NORTHWEST WINDS 15 TO 25 KNOTS BACKING WEST
AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES SUBSIDING
TO 1 TO 3 FEET.
FRIDAY
SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS IN THE AFTERNOON. WAVES BUILDING TO 2 TO 4 FEET, THEN
SUBSIDING TO 1 TO 3 FEET.
FRIDAY NIGHT
SOUTHWEST WINDS 20 TO 30 KNOTS. WAVES BUILDING TO
3 TO 5 FEET OCCASIONALLY TO 7 FEET.
SATURDAY
WEST WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW SHOWERS.
FREEZING SPRAY. WAVES SUBSIDING TO 2 TO 4 FEET, THEN BUILDING TO
4 TO 7 FEET OCCASIONALLY TO 9 FEET.
SUNDAY
WEST WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW SHOWERS.
WAVES SUBSIDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
LSZ266-221700-
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-
350 AM EST WED JAN 22 2025
...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 1 PM EST THIS
AFTERNOON...
EARLY THIS MORNING
SOUTH WINDS TO 30 KNOTS WITH A FEW GALE
FORCE GUSTS TO 35 KNOTS POSSIBLE. HEAVY FREEZING SPRAY. SNOW
SHOWERS LIKELY. WAVES 6 TO 9 FEET OCCASIONALLY TO 11 FEET.
TODAY
SOUTHWEST WINDS TO 30 KNOTS WITH A FEW GALE FORCE GUSTS
TO 35 KNOTS POSSIBLE DIMINISHING TO 10 TO 20 KNOTS. HEAVY
FREEZING SPRAY IN THE MORNING. SNOW SHOWERS LIKELY IN THE
MORNING, THEN A CHANCE OF SNOW SHOWERS IN THE AFTERNOON. WAVES
BUILDING TO 7 TO 10 FEET OCCASIONALLY TO 13 FEET, THEN SUBSIDING
TO 2 TO 4 FEET.
TONIGHT
WEST WINDS 20 TO 30 KNOTS VEERING NORTH BY MIDNIGHT,
THEN INCREASING TO 30 KNOTS WITH A FEW GALE FORCE GUSTS TO
35 KNOTS POSSIBLE LATE. FREEZING SPRAY. A CHANCE OF SNOW SHOWERS.
WAVES BUILDING TO 7 TO 10 FEET OCCASIONALLY TO 13 FEET.
THURSDAY
NORTH WINDS 20 TO 30 KNOTS BACKING NORTHWEST.
FREEZING SPRAY. SNOW SHOWERS LIKELY. WAVES SUBSIDING TO 4 TO
7 FEET OCCASIONALLY TO 9 FEET.
THURSDAY NIGHT
NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST
10 TO 20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS.
WAVES SUBSIDING TO 2 TO 4 FEET.
FRIDAY
SOUTHWEST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO 3 TO
6 FEET OCCASIONALLY TO 8 FEET.
FRIDAY NIGHT
SOUTHWEST WINDS 20 TO 30 KNOTS. FREEZING SPRAY.
WAVES BUILDING TO 5 TO 8 FEET OCCASIONALLY TO 10 FEET.
SATURDAY
WEST WINDS 20 TO 30 KNOTS VEERING NORTHWEST. A CHANCE
OF SNOW SHOWERS. FREEZING SPRAY. WAVES SUBSIDING TO 4 TO 7 FEET
OCCASIONALLY TO 9 FEET, THEN BUILDING TO 7 TO 10 FEET
OCCASIONALLY TO 13 FEET.
SUNDAY
WEST WINDS 20 TO 30 KNOTS. FREEZING SPRAY. A CHANCE OF
SNOW SHOWERS. WAVES SUBSIDING TO 6 TO 9 FEET OCCASIONALLY TO
11 FEET, THEN BUILDING TO 7 TO 10 FEET OCCASIONALLY TO 13 FEET.
LSZ267-221700-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
350 AM EST WED JAN 22 2025
...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 1 PM EST THIS
AFTERNOON...
EARLY THIS MORNING
SOUTH WINDS 20 TO 30 KNOTS. HEAVY FREEZING
SPRAY. A CHANCE OF SNOW SHOWERS. WAVES 6 TO 9 FEET OCCASIONALLY
TO 11 FEET.
TODAY
SOUTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MID AFTERNOON. HEAVY FREEZING SPRAY. SNOW SHOWERS
LIKELY. WAVES SUBSIDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
TONIGHT
SOUTHWEST WINDS 15 TO 25 KNOTS VEERING WEST BY
MIDNIGHT, THEN VEERING NORTH LATE. A CHANCE OF SNOW SHOWERS.
FREEZING SPRAY AFTER MIDNIGHT. WAVES SUBSIDING TO 2 TO 4 FEET,
THEN BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.
THURSDAY
NORTH WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 20 TO
30 KNOTS BY MID AFTERNOON. FREEZING SPRAY IN THE MORNING. SNOW
SHOWERS LIKELY IN THE MORNING, THEN A CHANCE OF SNOW SHOWERS IN
THE AFTERNOON. WAVES SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO
8 FEET.
THURSDAY NIGHT
NORTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF
SNOW SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.
FRIDAY
SOUTHWEST WINDS 15 TO 25 KNOTS BECOMING SOUTH 20 TO
30 KNOTS IN THE AFTERNOON. WAVES BUILDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET.
FRIDAY NIGHT
SOUTHWEST WINDS 20 TO 30 KNOTS. FREEZING SPRAY. A
CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 5 TO 8 FEET
OCCASIONALLY TO 10 FEET.
SATURDAY
SOUTHWEST WINDS 20 TO 30 KNOTS BECOMING NORTHWEST
GALES TO 35 KNOTS. SNOW SHOWERS LIKELY. FREEZING SPRAY. WAVES
SUBSIDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET, THEN BUILDING TO
8 TO 11 FEET OCCASIONALLY TO 14 FEET.
SUNDAY
WEST WINDS 20 TO 30 KNOTS. FREEZING SPRAY. A CHANCE OF
SNOW SHOWERS. WAVES SUBSIDING TO 6 TO 9 FEET OCCASIONALLY TO
11 FEET, THEN BUILDING TO 7 TO 10 FEET OCCASIONALLY TO 13 FEET.
LSZ261-221700-
MAFOR 2210/
SUPERIOR WEST 11557 11547 11740 11730 11830 13840. WAVES 5 TO 9
FEET SUBSIDING TO 3 TO 6 FEET TODAY. WAVES 3 TO 6 FEET TONIGHT.
SUPERIOR NORTH CENTRAL 11547 12537 11530 13850 11842. WAVES 5 TO
9 FEET SUBSIDING TO 3 TO 6 FEET TODAY. WAVES 5 TO 8 FEET BUILDING
TO 6 TO 10 FEET TONIGHT.
SUPERIOR SOUTH CENTRAL 11547 11542 11530 11520 11630 11740 12840.
WAVES 4 TO 7 FEET SUBSIDING TO 1 TO 3 FEET TODAY. WAVES 2 TO 4
FEET BUILDING TO 7 TO 10 FEET TONIGHT.
SUPERIOR EAST 11457 11557 11547 11537 11527 11627 12830. WAVES 6
TO 10 FEET SUBSIDING TO 4 TO 6 FEET TODAY. WAVES 3 TO 6 FEET
TONIGHT.
GS
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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