330
FZUS63 KMQT 180301
GLFLS
OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
1000 PM EST TUE FEB 17 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
30.1 INCH RIDGING GIVES WAY TO PRESSURE FALLS TONIGHT AS 29.1 INCH
LOW PRESSURE EJECTS OUT OF THE NORTHERN PLAINS. PRESSURE WILL FALL
TO AT LEAST 29.7 INCHES OVER THE LAKE BY TOMORROW MORNING. 29.8 INCH
TROUGHING THEN PERSISTS OVER THE LAKE THROUGH THURSDAY, DEEPENING TO
29.5 INCHES BY FRIDAY MORNING AS A 29.3 INCH LOW APPROACHES UPPER
MICHIGAN FROM THE SOUTH. THIS FEATURE WEAKENS OVER LAKE HURON
SATURDAY, BUT CONTINUES TO EXTEND WEAK 29.9 INCH TROUGHING OVER LAKE
SUPERIOR AT LEAST THROUGH SATURDAY AFTERNOON.
LSZ162-180900-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
1000 PM EST TUE FEB 17 2026 /900 PM CST TUE FEB 17 2026/
..STORM WARNING IN EFFECT THROUGH WEDNESDAY EVENING
REST OF TONIGHT
EAST GALES TO 45 KNOTS INCREASING TO STORM
FORCE WINDS TO 55 KNOTS BY MIDNIGHT. A CHANCE OF SNOW LATE IN THE
EVENING. A SLIGHT CHANCE OF SLEET. SNOW AFTER MIDNIGHT. WAVES
6 TO 9 FEET OCCASIONALLY TO 11 FEET BUILDING TO 7 TO 10 FEET
OCCASIONALLY TO 13 FEET.
WEDNESDAY
EAST STORM FORCE WINDS TO 55 KNOTS DIMINISHING TO
GALES TO 45 KNOTS BY MID AFTERNOON. SNOW. RAIN LIKELY IN THE
AFTERNOON. WAVES 7 TO 10 FEET OCCASIONALLY TO 13 FEET.
WEDNESDAY NIGHT
EAST GALES TO 45 KNOTS. SNOW SHOWERS LIKELY.
WAVES SUBSIDING TO 5 TO 8 FEET OCCASIONALLY TO 10 FEET.
THURSDAY
EAST GALES TO 35 KNOTS BECOMING NORTHEAST 20 TO
30 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
THURSDAY NIGHT
NORTHEAST WINDS 20 TO 30 KNOTS. A CHANCE OF
SNOW. WAVES SUBSIDING TO 2 TO 4 FEET.
FRIDAY
NORTHEAST WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW. WAVES
SUBSIDING TO 1 TO 3 FEET, THEN BUILDING TO 2 TO 4 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. WAVES SUBSIDING TO
CALM TO 2 FEET.
SUNDAY
NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH. WAVES
CALM TO 2 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ263-180900-
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 FEB 17 2026
..GALE WARNING IN EFFECT THROUGH LATE WEDNESDAY NIGHT
REST OF TONIGHT
EAST GALES TO 45 KNOTS INCREASING TO GALES TO
45 KNOTS WITH A FEW STORM FORCE GUSTS TO 55 KNOTS POSSIBLE LATE.
A SLIGHT CHANCE OF SNOW LATE IN THE EVENING, THEN SNOW, POSSIBLY
MIXED WITH FREEZING RAIN AND SLEET AFTER MIDNIGHT. WAVES 3 TO
6 FEET OCCASIONALLY TO 8 FEET BUILDING TO 12 TO 17 FEET
OCCASIONALLY TO 21 FEET.
WEDNESDAY
EAST GALES TO 45 KNOTS WITH A FEW STORM FORCE GUSTS
TO 50 KNOTS POSSIBLE DIMINISHING TO GALES TO 45 KNOTS. SNOW. RAIN
LIKELY IN THE AFTERNOON. WAVES BUILDING TO 17 TO 22 FEET
OCCASIONALLY TO 28 FEET, THEN SUBSIDING TO 15 TO 20 FEET
OCCASIONALLY TO 25 FEET.
WEDNESDAY NIGHT
EAST GALES TO 45 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 10 TO 14 FEET OCCASIONALLY TO
18 FEET.
THURSDAY
EAST GALES TO 35 KNOTS DIMINISHING TO 20 TO 30 KNOTS
IN THE AFTERNOON. 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 WINDS 20 TO 30 KNOTS BECOMING NORTHEAST
GALES TO 35 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW. WAVES
SUBSIDING TO 5 TO 8 FEET OCCASIONALLY TO 10 FEET.
FRIDAY
NORTHEAST WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW. WAVES
BUILDING TO 6 TO 9 FEET OCCASIONALLY TO 11 FEET, THEN SUBSIDING
TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
FRIDAY NIGHT
NORTH WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
SATURDAY
NORTHWEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
1 TO 3 FEET, THEN BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
SUNDAY
NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH. WAVES
SUBSIDING TO 2 TO 4 FEET, THEN BUILDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ264-180900-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
1000 PM EST TUE FEB 17 2026
..GALE WARNING IN EFFECT THROUGH THURSDAY MORNING
REST OF TONIGHT
EAST WINDS 20 TO 30 KNOTS INCREASING TO GALES
TO 45 KNOTS BY MIDNIGHT. FREEZING SPRAY AFTER MIDNIGHT. A CHANCE
OF SNOW AFTER MIDNIGHT. WAVES 4 TO 7 FEET OCCASIONALLY TO 9 FEET
BUILDING TO 12 TO 17 FEET OCCASIONALLY TO 21 FEET.
WEDNESDAY
EAST GALES TO 45 KNOTS WITH A FEW STORM FORCE GUSTS
TO 55 KNOTS POSSIBLE DIMINISHING TO GALES TO 45 KNOTS BY MID
AFTERNOON. FREEZING SPRAY. SNOW. WAVES BUILDING TO 17 TO 22 FEET
OCCASIONALLY TO 28 FEET, THEN SUBSIDING TO 15 TO 20 FEET
OCCASIONALLY TO 25 FEET.
WEDNESDAY NIGHT
EAST GALES TO 40 KNOTS. FREEZING SPRAY IN THE
EVENING. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 10 TO
14 FEET OCCASIONALLY TO 18 FEET.
THURSDAY
EAST GALES TO 35 KNOTS. A CHANCE OF SNOW SHOWERS.
WAVES SUBSIDING TO 7 TO 10 FEET OCCASIONALLY TO 13 FEET.
THURSDAY NIGHT
EAST WINDS 20 TO 30 KNOTS INCREASING TO GALES
TO 35 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW. WAVES SUBSIDING TO
6 TO 9 FEET OCCASIONALLY TO 11 FEET.
FRIDAY
EAST GALES TO 35 KNOTS BACKING NORTHEAST IN THE
AFTERNOON. A CHANCE OF SNOW. WAVES SUBSIDING TO 4 TO 7 FEET
OCCASIONALLY TO 9 FEET.
FRIDAY NIGHT
NORTHEAST WINDS 15 TO 25 KNOTS BACKING NORTH
AFTER MIDNIGHT. FREEZING SPRAY. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET, THEN BUILDING TO
4 TO 7 FEET OCCASIONALLY TO 9 FEET.
SATURDAY
NORTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS. WAVES SUBSIDING TO 2 TO 4 FEET, THEN BUILDING TO 5 TO
8 FEET OCCASIONALLY TO 10 FEET.
SUNDAY
NORTH WINDS 15 TO 25 KNOTS. WAVES SUBSIDING TO 4 TO
7 FEET OCCASIONALLY TO 9 FEET, THEN BUILDING TO 6 TO 9 FEET
OCCASIONALLY TO 11 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ265-180900-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
1000 PM EST TUE FEB 17 2026
..GALE WARNING IN EFFECT THROUGH LATE WEDNESDAY NIGHT
REST OF TONIGHT
EAST GALES TO 45 KNOTS. A SLIGHT CHANCE OF
SNOW LATE IN THE EVENING, THEN SNOW LIKELY AFTER MIDNIGHT. WAVES
3 TO 5 FEET OCCASIONALLY TO 7 FEET BUILDING TO 12 TO 17 FEET
OCCASIONALLY TO 21 FEET.
WEDNESDAY
EAST GALES TO 45 KNOTS WITH A FEW STORM FORCE GUSTS
TO 55 KNOTS POSSIBLE DIMINISHING TO GALES TO 45 KNOTS BY MID
AFTERNOON. SNOW. WAVES BUILDING TO 15 TO 20 FEET OCCASIONALLY TO
25 FEET, THEN SUBSIDING TO 12 TO 17 FEET OCCASIONALLY TO 21 FEET.
WEDNESDAY NIGHT
EAST GALES TO 40 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 8 TO 11 FEET OCCASIONALLY TO 14 FEET.
THURSDAY
EAST GALES TO 35 KNOTS DIMINISHING TO 20 TO 30 KNOTS
IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO
5 TO 8 FEET OCCASIONALLY TO 10 FEET.
THURSDAY NIGHT
EAST WINDS 20 TO 30 KNOTS INCREASING TO GALES
TO 35 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW. WAVES 5 TO 8 FEET
OCCASIONALLY TO 10 FEET.
FRIDAY
EAST GALES TO 35 KNOTS BACKING NORTHEAST IN THE
AFTERNOON. SNOW LIKELY. WAVES SUBSIDING TO 4 TO 7 FEET
OCCASIONALLY TO 9 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, THEN BUILDING TO 4 TO 7 FEET
OCCASIONALLY TO 9 FEET.
SATURDAY
NORTHWEST WINDS 20 TO 30 KNOTS. WAVES SUBSIDING TO
2 TO 4 FEET, THEN BUILDING TO 5 TO 8 FEET OCCASIONALLY TO
10 FEET.
SUNDAY
NORTHWEST WINDS 20 TO 30 KNOTS. WAVES BUILDING TO 6 TO
10 FEET OCCASIONALLY TO 13 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ266-180900-
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 FEB 17 2026
..GALE WARNING IN EFFECT THROUGH LATE WEDNESDAY NIGHT
REST OF TONIGHT
EAST WINDS 20 TO 30 KNOTS INCREASING TO GALES
TO 45 KNOTS BY MIDNIGHT. A CHANCE OF SNOW. FREEZING SPRAY AFTER
MIDNIGHT. WAVES 3 TO 5 FEET OCCASIONALLY TO 7 FEET BUILDING TO
12 TO 17 FEET OCCASIONALLY TO 21 FEET.
WEDNESDAY
EAST GALES TO 45 KNOTS WITH A FEW STORM FORCE GUSTS
TO 55 KNOTS POSSIBLE DIMINISHING TO GALES TO 45 KNOTS BY MID
AFTERNOON. FREEZING SPRAY. A SLIGHT CHANCE OF FREEZING RAIN AND
SLEET IN THE MORNING. SNOW. WAVES BUILDING TO 15 TO 20 FEET
OCCASIONALLY TO 25 FEET.
WEDNESDAY NIGHT
EAST GALES TO 40 KNOTS. FREEZING SPRAY 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.
WAVES SUBSIDING TO 6 TO 9 FEET OCCASIONALLY TO 11 FEET.
THURSDAY NIGHT
EAST GALES TO 40 KNOTS. A CHANCE OF SNOW. 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. A CHANCE OF SNOW IN THE
MORNING, THEN SNOW LIKELY IN THE AFTERNOON. WAVES SUBSIDING TO
4 TO 7 FEET OCCASIONALLY TO 9 FEET.
FRIDAY NIGHT
EAST WINDS 20 TO 30 KNOTS BACKING NORTHEAST AFTER
MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 3 TO
6 FEET OCCASIONALLY TO 8 FEET, THEN BUILDING TO 4 TO 7 FEET
OCCASIONALLY TO 9 FEET.
SATURDAY
NORTHWEST WINDS 20 TO 30 KNOTS. WAVES SUBSIDING TO
3 TO 5 FEET OCCASIONALLY TO 7 FEET, THEN BUILDING TO 6 TO 9 FEET
OCCASIONALLY TO 11 FEET.
SUNDAY
NORTH WINDS 20 TO 30 KNOTS. WAVES BUILDING TO 9 TO
12 FEET OCCASIONALLY TO 15 FEET, THEN SUBSIDING TO 7 TO 10 FEET
OCCASIONALLY TO 13 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ267-180900-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
1000 PM EST TUE FEB 17 2026
...GALE WARNING IN EFFECT FROM 7 AM EST WEDNESDAY THROUGH
WEDNESDAY EVENING...
REST OF TONIGHT
EAST WINDS 15 TO 25 KNOTS INCREASING TO GALES
TO 40 KNOTS BY MIDNIGHT. FREEZING SPRAY AFTER MIDNIGHT. A CHANCE
OF SNOW AFTER MIDNIGHT. WAVES 2 TO 4 FEET BUILDING TO 6 TO 9 FEET
OCCASIONALLY TO 11 FEET.
WEDNESDAY
EAST GALES TO 45 KNOTS. FREEZING SPRAY. A SLIGHT
CHANCE OF SLEET IN THE MORNING. SNOW. WAVES BUILDING TO 7 TO
11 FEET OCCASIONALLY TO 14 FEET.
WEDNESDAY NIGHT
EAST GALES TO 35 KNOTS. FREEZING SPRAY. A
CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 4 TO 7 FEET
OCCASIONALLY TO 9 FEET.
THURSDAY
EAST GALES TO 35 KNOTS BECOMING SOUTHEAST 20 TO
30 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
THURSDAY NIGHT
EAST GALES TO 35 KNOTS. A CHANCE OF SNOW. WAVES
3 TO 6 FEET OCCASIONALLY TO 8 FEET.
FRIDAY
EAST GALES TO 35 KNOTS. A CHANCE OF SNOW IN THE
MORNING, THEN SNOW LIKELY IN THE AFTERNOON. WAVES SUBSIDING TO
3 TO 5 FEET OCCASIONALLY TO 7 FEET.
FRIDAY NIGHT
EAST WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
SATURDAY
NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. WAVES SUBSIDING TO 2 TO 4 FEET, THEN BUILDING TO 3 TO
6 FEET OCCASIONALLY TO 8 FEET.
SUNDAY
NORTH WINDS 15 TO 25 KNOTS. WAVES BUILDING TO 5 TO
8 FEET OCCASIONALLY TO 10 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ261-180900-
MAFOR 1804/
SUPERIOR WEST...STORM WARNING IN EFFECT...11267 14277 11277 11267
11257. WAVES OMITTED DUE TO THE LAKE BEING MOSTLY ICE COVERED.
SUPERIOR NORTH CENTRAL...GALE WARNING IN EFFECT...11250 11261
11271 12277 12267 11250. WAVES 5 TO 8 FEET BUILDING TO 12 TO 16
FEET OVERNIGHT. WAVES 14 TO 18 FEET BUILDING TO 15 TO 20 FEET
WEDNESDAY. WAVES 15 TO 19 FEET SUBSIDING TO 13 TO 17 FEET
WEDNESDAY EVENING.
SUPERIOR SOUTH CENTRAL...GALE WARNING IN EFFECT...11250 11267
13277 12267 11250. WAVES 4 TO 7 FEET BUILDING TO 11 TO 15 FEET
OVERNIGHT. WAVES 13 TO 17 FEET BUILDING TO 14 TO 19 FEET
WEDNESDAY. WAVES 13 TO 17 FEET SUBSIDING TO 11 TO 15 FEET
WEDNESDAY EVENING. WAVE HEIGHTS ARE FOR ICE FREE AREAS.
SUPERIOR EAST...GALE WARNING IN EFFECT...11250 11251 11261 14267
11251. WAVES 3 TO 6 FEET BUILDING TO 6 TO 10 FEET OVERNIGHT.
WAVES 9 TO 13 FEET WEDNESDAY. WAVES 8 TO 12 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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