772
FZUS63 KMQT 182101
GLFLS
OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
400 PM EST WED FEB 18 2026
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
29.7 INCH TROUGHING PERSISTS OVER LAKE SUPERIOR THROUGH THURSDAY AS
A 29.3 INCH LOW OVER MINNESOTA THIS AFTERNOON MOVES EAST TO UPPER
MICHIGAN AND WEAKENS TO 29.6 INCHES THROUGH THURSDAY MORNING.
PRESSURE THEN FALLS TO AROUND 29.5 INCHES OVER THE LAKE FOR FRIDAY
AS A SECOND 29.3 INCH LOW OVER MISSOURI THURSDAY AFTERNOON TRACKS TO
NORTHERN LAKE MICHIGAN BY FRIDAY AFTERNOON. PRESSURE THEN RISES
SATURDAY THROUGH MONDAY AS THE LOW PRESSURE DISSIPATES OVER THE
GREAT LAKES AND HIGH PRESSURE DESCENDS SOUTHEAST INTO THE REGION.
PRESSURE OVER THE LAKE REACHES AT LEAST 30.4 INCHES BY MONDAY NIGHT.
LSZ162-190900-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
400 PM EST WED FEB 18 2026 /300 PM CST WED FEB 18 2026/
...GALE WARNING IN EFFECT UNTIL 1 AM EST /MIDNIGHT CST/
THURSDAY...
LATE THIS AFTERNOON
EAST GALES TO 45 KNOTS. SNOW SHOWERS,
POSSIBLY MIXED WITH SLEET. WAVES 10 TO 14 FEET OCCASIONALLY TO
18 FEET SUBSIDING TO 10 TO 14 FEET OCCASIONALLY TO 18 FEET.
TONIGHT
EAST GALES TO 45 KNOTS. SNOW SHOWERS. WAVES SUBSIDING
TO 7 TO 10 FEET OCCASIONALLY TO 13 FEET.
THURSDAY
EAST GALES TO 35 KNOTS DIMINISHING TO 20 TO 30 KNOTS
BY LATE MORNING, THEN BACKING NORTHEAST BY MID AFTERNOON. SNOW
SHOWERS LIKELY IN THE MORNING, THEN A CHANCE OF SNOW SHOWERS IN
THE AFTERNOON. WAVES SUBSIDING TO 4 TO 7 FEET OCCASIONALLY TO
9 FEET.
THURSDAY NIGHT
NORTHEAST WINDS 20 TO 30 KNOTS. A CHANCE OF
SNOW. WAVES SUBSIDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
FRIDAY
NORTHEAST WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW. WAVES
BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
FRIDAY NIGHT
NORTH WINDS 15 TO 25 KNOTS BACKING NORTHWEST
AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 1 TO
3 FEET.
SATURDAY
NORTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
SATURDAY NIGHT
NORTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF
SNOW SHOWERS. WAVES CALM TO 2 FEET.
SUNDAY
NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH. WAVES
CALM TO 2 FEET.
MONDAY
NORTH WINDS 5 TO 15 KNOTS VEERING EAST. WAVES CALM TO
2 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ263-190900-
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-
400 PM EST WED FEB 18 2026
..GALE WARNING IN EFFECT UNTIL 1 AM EST THURSDAY
LATE THIS AFTERNOON
EAST GALES TO 45 KNOTS. SNOW SHOWERS,
POSSIBLY MIXED WITH RAIN. WAVES 15 TO 20 FEET OCCASIONALLY TO
25 FEET.
TONIGHT
EAST GALES TO 45 KNOTS. A CHANCE OF SNOW SHOWERS IN
THE EVENING, THEN SNOW SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO
11 TO 15 FEET OCCASIONALLY TO 19 FEET.
THURSDAY
EAST GALES TO 35 KNOTS DIMINISHING TO 20 TO 30 KNOTS.
SNOW SHOWERS IN THE MORNING, THEN A CHANCE OF SNOW SHOWERS IN THE
AFTERNOON. WAVES SUBSIDING TO 8 TO 11 FEET OCCASIONALLY TO
14 FEET.
THURSDAY NIGHT
EAST WINDS 20 TO 30 KNOTS BECOMING NORTHEAST
GALES TO 35 KNOTS LATE. A CHANCE OF SNOW. A SLIGHT CHANCE OF
FREEZING RAIN AFTER MIDNIGHT. WAVES SUBSIDING TO 6 TO 9 FEET
OCCASIONALLY TO 11 FEET.
FRIDAY
NORTHEAST WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW. WAVES
SUBSIDING TO 5 TO 8 FEET OCCASIONALLY TO 10 FEET.
FRIDAY NIGHT
NORTH WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
SATURDAY
NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST IN THE
AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 1 TO
3 FEET.
SATURDAY NIGHT
NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH
AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 3 TO
5 FEET OCCASIONALLY TO 7 FEET.
SUNDAY
NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH. WAVES
BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
MONDAY
NORTH WINDS 5 TO 15 KNOTS VEERING EAST. WAVES SUBSIDING
TO CALM TO 2 FEET, THEN BUILDING TO 2 TO 4 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ264-190900-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
400 PM EST WED FEB 18 2026
..GALE WARNING IN EFFECT THROUGH THURSDAY MORNING
LATE THIS AFTERNOON
EAST GALES TO 45 KNOTS. FREEZING SPRAY.
SNOW SHOWERS. WAVES 15 TO 20 FEET OCCASIONALLY TO 25 FEET.
TONIGHT
EAST GALES TO 45 KNOTS. SNOW SHOWERS. WAVES SUBSIDING
TO 11 TO 15 FEET OCCASIONALLY TO 19 FEET.
THURSDAY
EAST GALES TO 35 KNOTS DIMINISHING TO 20 TO 30 KNOTS
BY MID AFTERNOON. SNOW SHOWERS IN THE MORNING, THEN A CHANCE OF
SNOW SHOWERS IN THE AFTERNOON. WAVES SUBSIDING TO 8 TO 11 FEET
OCCASIONALLY TO 14 FEET.
THURSDAY NIGHT
EAST WINDS 20 TO 30 KNOTS INCREASING TO GALES
TO 35 KNOTS BY MIDNIGHT. A CHANCE OF SNOW. A SLIGHT CHANCE OF
FREEZING RAIN AFTER MIDNIGHT. WAVES SUBSIDING TO 6 TO 9 FEET
OCCASIONALLY TO 11 FEET, THEN BUILDING TO 7 TO 10 FEET
OCCASIONALLY TO 13 FEET.
FRIDAY
EAST GALES TO 35 KNOTS BACKING NORTHEAST IN THE
AFTERNOON. A CHANCE OF SNOW. WAVES SUBSIDING TO 5 TO 8 FEET
OCCASIONALLY TO 10 FEET.
FRIDAY NIGHT
NORTHEAST WINDS 15 TO 25 KNOTS BACKING NORTH
AFTER MIDNIGHT. FREEZING SPRAY AFTER MIDNIGHT. WAVES SUBSIDING TO
3 TO 6 FEET OCCASIONALLY TO 8 FEET.
SATURDAY
NORTH WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO 2 TO
4 FEET.
SATURDAY NIGHT
NORTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. FREEZING SPRAY
AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 6 FEET OCCASIONALLY TO
8 FEET.
SUNDAY
NORTH WINDS 15 TO 25 KNOTS. HEAVY FREEZING SPRAY. WAVES
BUILDING TO 5 TO 9 FEET OCCASIONALLY TO 11 FEET.
MONDAY
NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. HEAVY FREEZING SPRAY. WAVES SUBSIDING TO CALM TO
2 FEET, THEN BUILDING TO 2 TO 4 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ265-190900-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
400 PM EST WED FEB 18 2026
..GALE WARNING IN EFFECT THROUGH THURSDAY MORNING
LATE THIS AFTERNOON
EAST GALES TO 45 KNOTS. SNOW SHOWERS,
POSSIBLY MIXED WITH FREEZING RAIN. WAVES 15 TO 20 FEET
OCCASIONALLY TO 25 FEET.
TONIGHT
EAST GALES TO 40 KNOTS. A CHANCE OF SNOW SHOWERS,
POSSIBLY MIXED WITH FREEZING RAIN IN THE EVENING, THEN SNOW
SHOWERS LIKELY AFTER MIDNIGHT. WAVES SUBSIDING TO 8 TO 11 FEET
OCCASIONALLY TO 14 FEET.
THURSDAY
EAST GALES TO 35 KNOTS VEERING SOUTHEAST BY LATE
MORNING, THEN BECOMING EAST 20 TO 30 KNOTS BY MID AFTERNOON. SNOW
SHOWERS LIKELY IN THE MORNING, THEN A SLIGHT CHANCE OF RAIN AND
SNOW SHOWERS IN THE AFTERNOON. WAVES SUBSIDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET.
THURSDAY NIGHT
EAST WINDS 20 TO 30 KNOTS INCREASING TO GALES
TO 35 KNOTS BY MIDNIGHT. A SLIGHT CHANCE OF RAIN IN THE EVENING.
A CHANCE OF SNOW, POSSIBLY MIXED WITH FREEZING RAIN. WAVES
BUILDING TO 6 TO 9 FEET OCCASIONALLY TO 11 FEET.
FRIDAY
EAST GALES TO 35 KNOTS BACKING NORTHEAST IN THE
AFTERNOON. SNOW LIKELY. WAVES BUILDING TO 7 TO 10 FEET
OCCASIONALLY TO 13 FEET, THEN SUBSIDING TO 5 TO 8 FEET
OCCASIONALLY TO 10 FEET.
FRIDAY NIGHT
NORTHEAST WINDS 20 TO 30 KNOTS BACKING NORTHWEST
AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 3 TO
6 FEET OCCASIONALLY TO 8 FEET.
SATURDAY
NORTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 2 TO 4 FEET.
SATURDAY NIGHT
NORTHWEST WINDS 15 TO 25 KNOTS INCREASING TO
20 TO 30 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
SUNDAY
NORTHWEST WINDS 20 TO 30 KNOTS. WAVES BUILDING TO 7 TO
10 FEET OCCASIONALLY TO 13 FEET.
MONDAY
NORTH WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET, THEN BUILDING TO
1 TO 3 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ266-190900-
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-
400 PM EST WED FEB 18 2026
..GALE WARNING IN EFFECT THROUGH THURSDAY MORNING
LATE THIS AFTERNOON
EAST GALES TO 45 KNOTS. FREEZING SPRAY.
SNOW SHOWERS, POSSIBLY MIXED WITH FREEZING RAIN AND SLEET. WAVES
15 TO 20 FEET OCCASIONALLY TO 25 FEET.
TONIGHT
EAST GALES TO 45 KNOTS. A SLIGHT CHANCE OF FREEZING
RAIN IN THE EVENING. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO
10 TO 14 FEET OCCASIONALLY TO 18 FEET.
THURSDAY
EAST GALES TO 40 KNOTS. A CHANCE OF SNOW SHOWERS. A
SLIGHT CHANCE OF RAIN SHOWERS IN THE AFTERNOON. WAVES SUBSIDING
TO 6 TO 9 FEET OCCASIONALLY TO 11 FEET.
THURSDAY NIGHT
EAST GALES TO 40 KNOTS. A CHANCE OF FREEZING
RAIN AND SNOW, POSSIBLY MIXED WITH RAIN. WAVES SUBSIDING TO 5 TO
8 FEET OCCASIONALLY TO 10 FEET, THEN BUILDING TO 6 TO 9 FEET
OCCASIONALLY TO 11 FEET.
FRIDAY
EAST GALES TO 40 KNOTS. FREEZING RAIN LIKELY, POSSIBLY
MIXED WITH RAIN IN THE MORNING. SNOW LIKELY. WAVES BUILDING TO
7 TO 10 FEET OCCASIONALLY TO 13 FEET, THEN SUBSIDING TO 5 TO
8 FEET OCCASIONALLY TO 10 FEET.
FRIDAY NIGHT
EAST WINDS 20 TO 30 KNOTS BACKING NORTHEAST AFTER
MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 4 TO
7 FEET OCCASIONALLY TO 9 FEET.
SATURDAY
NORTH WINDS 20 TO 30 KNOTS BACKING NORTHWEST IN THE
AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 2 TO
4 FEET.
SATURDAY NIGHT
NORTHWEST WINDS 20 TO 30 KNOTS VEERING NORTH
AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. FREEZING SPRAY AFTER
MIDNIGHT. WAVES BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.
SUNDAY
NORTH WINDS 20 TO 30 KNOTS. HEAVY FREEZING SPRAY. WAVES
BUILDING TO 7 TO 11 FEET OCCASIONALLY TO 14 FEET.
MONDAY
NORTH WINDS 15 TO 25 KNOTS. HEAVY FREEZING SPRAY. WAVES
SUBSIDING TO 2 TO 4 FEET, THEN BUILDING TO 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ267-190900-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
400 PM EST WED FEB 18 2026
..GALE WARNING IN EFFECT UNTIL 1 AM EST THURSDAY
LATE THIS AFTERNOON
EAST GALES TO 40 KNOTS. FREEZING SPRAY.
SNOW SHOWERS. WAVES 8 TO 11 FEET OCCASIONALLY TO 14 FEET.
TONIGHT
EAST GALES TO 40 KNOTS VEERING SOUTHEAST BY MIDNIGHT,
THEN BACKING EAST LATE. FREEZING SPRAY. A SLIGHT CHANCE OF
FREEZING RAIN IN THE EVENING. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 6 TO 9 FEET OCCASIONALLY TO 11 FEET.
THURSDAY
EAST GALES TO 35 KNOTS BECOMING SOUTHEAST 20 TO
30 KNOTS. A CHANCE OF SNOW SHOWERS. A SLIGHT CHANCE OF RAIN
SHOWERS IN THE AFTERNOON. WAVES SUBSIDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET.
THURSDAY NIGHT
EAST WINDS 20 TO 30 KNOTS INCREASING TO GALES
TO 40 KNOTS BY MIDNIGHT. A CHANCE OF RAIN, POSSIBLY MIXED WITH
SNOW AND FREEZING RAIN. WAVES BUILDING TO 4 TO 7 FEET
OCCASIONALLY TO 9 FEET.
FRIDAY
EAST GALES TO 35 KNOTS. FREEZING RAIN LIKELY, POSSIBLY
MIXED WITH RAIN IN THE MORNING. SNOW LIKELY. WAVES SUBSIDING TO
3 TO 6 FEET OCCASIONALLY TO 8 FEET.
FRIDAY NIGHT
EAST WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.
SATURDAY
NORTHEAST WINDS 15 TO 25 KNOTS BACKING NORTHWEST IN
THE AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
SATURDAY NIGHT
NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
SUNDAY
NORTH WINDS 15 TO 25 KNOTS. HEAVY FREEZING SPRAY. WAVES
BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET, THEN SUBSIDING TO
2 TO 4 FEET.
MONDAY
NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. HEAVY FREEZING SPRAY. WAVES SUBSIDING TO 1 TO 3 FEET,
THEN BUILDING TO 2 TO 4 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ261-190300-
MAFOR 1822/
SUPERIOR WEST...GALE WARNING IN EFFECT...11267 12257 13247 11240
11140. WAVES OMITTED DUE TO THE LAKE BEING MOSTLY ICE COVERED.
SUPERIOR NORTH CENTRAL...GALE WARNING IN EFFECT...12267 14257
11257 11247. WAVES 14 TO 19 FEET SUBSIDING TO 12 TO 17 FEET
TONIGHT. WAVES 10 TO 14 FEET THURSDAY.
SUPERIOR SOUTH CENTRAL...GALE WARNING IN EFFECT...11267 12250
11357 11257 11357 11350 11340. WAVES 13 TO 18 FEET SUBSIDING TO 9
TO 12 FEET TONIGHT. WAVES 7 TO 11 FEET SUBSIDING TO 4 TO 7 FEET
THURSDAY. WAVE HEIGHTS ARE FOR ICE FREE AREAS.
SUPERIOR EAST...GALE WARNING IN EFFECT...12267 11251 11351 12250
12350. WAVES 9 TO 13 FEET SUBSIDING TO 8 TO 11 FEET TONIGHT.
WAVES 6 TO 10 FEET THURSDAY.
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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