377
FZUS63 KMQT 171501
GLFLS
OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
1000 AM 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
HIGH PRESSURE OF 30.1 INCHES REMAINS OVER LAKE SUPERIOR THIS MORNING
THROUGH THE AFTERNOON AS A 30.4 INCH RIDGE CROSSES NORTHERN ONTARIO
TODAY. PRESSURE WILL GRADUALLY FALL THROUGH TONIGHT TO 29.6 INCHES
OVER THE LAKE BY WEDNESDAY MORNING AS A 29.1 INCH LOW MOVES FROM THE
ROCKIES TO THE NORTHERN PLAINS. 29.8 INCH TROUGHING THEN PERSISTS
OVER THE LAKE THROUGH THURSDAY, DEEPENING BACK TO 29.5 INCHES BY
FRIDAY MORNING AS A 29.3 INCH LOW APPROACHES UPPER MICHIGAN FROM THE
SOUTH.
LSZ162-172100-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
1000 AM EST TUE FEB 17 2026 /900 AM CST TUE FEB 17 2026/
...GALE WARNING IN EFFECT FROM 4 PM EST /3 PM CST/ THIS AFTERNOON
TO 10 PM EST /9 PM CST/ THIS EVENING...
...STORM WARNING IN EFFECT FROM 10 PM EST /9 PM CST/ THIS EVENING
THROUGH WEDNESDAY EVENING...
REST OF TODAY
EAST WINDS 10 TO 20 KNOTS INCREASING TO GALES TO
40 KNOTS. A SLIGHT CHANCE OF SNOW SHOWERS IN THE AFTERNOON. WAVES
CALM TO 2 FEET BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.
TONIGHT
EAST GALES TO 45 KNOTS INCREASING TO STORM FORCE WINDS
TO 55 KNOTS LATE. A CHANCE OF SNOW, POSSIBLY MIXED WITH FREEZING
RAIN IN THE EVENING, THEN SNOW AFTER MIDNIGHT. WAVES 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. WAVES SUBSIDING TO 6 TO
9 FEET OCCASIONALLY TO 11 FEET, THEN BUILDING TO 7 TO 10 FEET
OCCASIONALLY TO 13 FEET.
WEDNESDAY NIGHT
EAST GALES TO 45 KNOTS. SNOW SHOWERS LIKELY IN
THE EVENING, THEN A CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. 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 6 FEET OCCASIONALLY TO 8 FEET.
THURSDAY NIGHT
NORTHEAST WINDS 20 TO 30 KNOTS. A CHANCE OF
SNOW SHOWERS. WAVES SUBSIDING TO 3 TO 5 FEET OCCASIONALLY TO
7 FEET.
FRIDAY
NORTHEAST WINDS 20 TO 30 KNOTS BECOMING NORTH 15 TO
25 KNOTS. A CHANCE OF SNOW. WAVES SUBSIDING TO 2 TO 4 FEET, THEN
BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
SATURDAY
NORTHWEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ263-172100-
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 AM EST TUE FEB 17 2026
...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH LATE
WEDNESDAY NIGHT...
REST OF TODAY
NORTHEAST WINDS 5 TO 15 KNOTS INCREASING TO
15 TO 25 KNOTS BY LATE MORNING, THEN BECOMING EAST 20 TO 30 KNOTS
BY MID AFTERNOON. WAVES CALM TO 2 FEET BUILDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET.
TONIGHT
EAST GALES TO 45 KNOTS. A CHANCE OF SNOW, POSSIBLY
MIXED WITH FREEZING RAIN IN THE EVENING, THEN SNOW AFTER
MIDNIGHT. WAVES 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. SNOW.
RAIN, POSSIBLY MIXED WITH FREEZING RAIN IN THE AFTERNOON. WAVES
BUILDING 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. 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 SHOWERS. WAVES
BUILDING TO 8 TO 11 FEET OCCASIONALLY TO 14 FEET.
FRIDAY
NORTHEAST WINDS 20 TO 30 KNOTS BECOMING NORTH 15 TO
25 KNOTS. A CHANCE OF SNOW. WAVES SUBSIDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET.
SATURDAY
NORTHWEST WINDS 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.
LSZ264-172100-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
1000 AM EST TUE FEB 17 2026
...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH LATE
WEDNESDAY NIGHT...
REST OF TODAY
NORTH WINDS 5 TO 15 KNOTS BECOMING NORTHEAST
10 TO 20 KNOTS BY LATE MORNING, THEN VEERING EAST BY MID
AFTERNOON. PATCHY FOG LATE IN THE MORNING. WAVES CALM TO 2 FEET
BUILDING TO 2 TO 4 FEET.
TONIGHT
EAST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
40 KNOTS BY MIDNIGHT. A CHANCE OF SNOW. FREEZING SPRAY AFTER
MIDNIGHT. WAVES 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. FREEZING
SPRAY. SNOW. A SLIGHT CHANCE OF FREEZING RAIN IN THE AFTERNOON.
WAVES BUILDING TO 15 TO 20 FEET OCCASIONALLY TO 25 FEET.
WEDNESDAY NIGHT
EAST GALES TO 40 KNOTS. FREEZING SPRAY. A
CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 10 TO 14 FEET
OCCASIONALLY TO 18 FEET.
THURSDAY
EAST GALES TO 35 KNOTS. FREEZING SPRAY IN THE
MORNING. 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 SHOWERS. FREEZING
SPRAY AFTER MIDNIGHT. WAVES BUILDING TO 8 TO 11 FEET OCCASIONALLY
TO 14 FEET.
FRIDAY
NORTHEAST GALES TO 35 KNOTS DIMINISHING TO 15 TO
25 KNOTS. FREEZING SPRAY. A CHANCE OF SNOW. WAVES SUBSIDING TO
3 TO 6 FEET OCCASIONALLY TO 8 FEET.
SATURDAY
NORTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS. WAVES SUBSIDING TO 2 TO 4 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ265-172100-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
1000 AM EST TUE FEB 17 2026
...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH LATE
WEDNESDAY NIGHT...
REST OF TODAY
NORTH WINDS 5 TO 15 KNOTS VEERING NORTHEAST BY
LATE MORNING, THEN BECOMING EAST 10 TO 20 KNOTS BY MID AFTERNOON.
PATCHY DENSE FOG. WAVES CALM TO 2 FEET.
TONIGHT
EAST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
40 KNOTS BY MIDNIGHT. PATCHY FOG IN THE EVENING. A SLIGHT CHANCE
OF SNOW IN THE EVENING, THEN SNOW AFTER MIDNIGHT. WAVES BUILDING
TO 11 TO 15 FEET OCCASIONALLY TO 19 FEET.
WEDNESDAY
EAST GALES TO 45 KNOTS. SNOW. A SLIGHT CHANCE OF
FREEZING RAIN IN THE AFTERNOON. 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 SHOWERS. WAVES
BUILDING TO 7 TO 10 FEET OCCASIONALLY TO 13 FEET.
FRIDAY
EAST GALES TO 35 KNOTS BECOMING NORTH 20 TO 30 KNOTS.
SNOW LIKELY, THEN A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO
3 TO 6 FEET OCCASIONALLY TO 8 FEET.
SATURDAY
NORTHWEST WINDS 20 TO 30 KNOTS. 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.
LSZ266-172100-
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 AM EST TUE FEB 17 2026
...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH LATE
WEDNESDAY NIGHT...
REST OF TODAY
NORTH WINDS 5 TO 15 KNOTS VEERING NORTHEAST BY
LATE MORNING, THEN BECOMING EAST 10 TO 20 KNOTS BY MID AFTERNOON.
PATCHY DENSE FOG. WAVES CALM TO 2 FEET.
TONIGHT
EAST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
40 KNOTS BY MIDNIGHT. A CHANCE OF SNOW. FREEZING SPRAY AFTER
MIDNIGHT. WAVES BUILDING TO 11 TO 15 FEET OCCASIONALLY TO
19 FEET.
WEDNESDAY
EAST GALES TO 45 KNOTS WITH A FEW STORM FORCE GUSTS
TO 50 KNOTS POSSIBLE DIMINISHING TO GALES TO 45 KNOTS. FREEZING
SPRAY. A SLIGHT CHANCE OF SLEET IN THE MORNING. SNOW. A SLIGHT
CHANCE OF FREEZING RAIN IN THE AFTERNOON. 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. FREEZING SPRAY AFTER MIDNIGHT. WAVES SUBSIDING TO 10 TO
14 FEET OCCASIONALLY TO 18 FEET.
THURSDAY
EAST GALES TO 40 KNOTS. FREEZING SPRAY IN THE
MORNING. 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
SHOWERS. WAVES BUILDING TO 7 TO 10 FEET OCCASIONALLY TO 13 FEET.
FRIDAY
EAST GALES TO 40 KNOTS BECOMING NORTHEAST 20 TO
30 KNOTS. A CHANCE OF SNOW. WAVES BUILDING TO 8 TO 11 FEET
OCCASIONALLY TO 14 FEET, THEN SUBSIDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET.
SATURDAY
NORTHWEST WINDS 20 TO 30 KNOTS. WAVES SUBSIDING TO
3 TO 6 FEET OCCASIONALLY TO 8 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ267-172100-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
1000 AM EST TUE FEB 17 2026
...GALE WARNING IN EFFECT FROM WEDNESDAY MORNING THROUGH
WEDNESDAY EVENING...
REST OF TODAY
WEST WINDS 5 TO 15 KNOTS VEERING NORTH BY LATE
MORNING, THEN VEERING EAST BY MID AFTERNOON. PATCHY DENSE
FREEZING FOG LATE IN THE MORNING. PATCHY DENSE FOG. WAVES CALM TO
2 FEET.
TONIGHT
EAST WINDS 15 TO 25 KNOTS INCREASING TO GALES TO
35 KNOTS. A CHANCE OF SNOW AFTER MIDNIGHT. WAVES BUILDING TO 6 TO
9 FEET OCCASIONALLY TO 11 FEET.
WEDNESDAY
EAST GALES TO 40 KNOTS. FREEZING SPRAY IN THE
MORNING. A SLIGHT CHANCE OF SLEET IN THE MORNING. SNOW. A SLIGHT
CHANCE OF FREEZING RAIN IN THE AFTERNOON. WAVES BUILDING TO 7 TO
11 FEET OCCASIONALLY TO 14 FEET.
WEDNESDAY NIGHT
EAST GALES TO 35 KNOTS. A CHANCE OF SNOW
SHOWERS IN THE EVENING. FREEZING SPRAY AFTER MIDNIGHT. 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 IN THE
MORNING. WAVES SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
THURSDAY NIGHT
EAST GALES TO 35 KNOTS. WAVES BUILDING TO 4 TO
7 FEET OCCASIONALLY TO 9 FEET.
FRIDAY
EAST GALES TO 35 KNOTS DIMINISHING TO 15 TO 25 KNOTS.
SNOW LIKELY, THEN A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO
2 TO 4 FEET.
SATURDAY
NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. WAVES BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ261-172100-
MAFOR 1716/
SUPERIOR WEST...STORM WARNING IN EFFECT...11230 11240 11250 11257
11267 13277. WAVES OMITTED DUE TO THE LAKE BEING MOSTLY ICE
COVERED.
SUPERIOR NORTH CENTRAL...GALE WARNING IN EFFECT...11110 11120
11230 11240 11250 11251 11267 11277. WAVES 1 TO 3 FEET THIS
AFTERNOON. WAVES 2 TO 4 FEET BUILDING TO 11 TO 15 FEET TONIGHT.
WAVES 14 TO 18 FEET BUILDING TO 15 TO 20 FEET WEDNESDAY MORNING.
SUPERIOR SOUTH CENTRAL...GALE WARNING IN EFFECT...11110 19114
12220 11240 12257 11267 11277. WAVES 2 FEET OR LESS THIS
AFTERNOON. WAVES 1 TO 3 FEET BUILDING TO 10 TO 14 FEET TONIGHT.
WAVES 13 TO 18 FEET WEDNESDAY MORNING. WAVE HEIGHTS ARE FOR ICE
FREE AREAS.
SUPERIOR EAST...GALE WARNING IN EFFECT...11800 11100 11210 11240
12250 11251 11267. WAVES AROUND 1 FOOT THIS AFTERNOON. WAVES 1 TO
3 FEET BUILDING TO 7 TO 10 FEET TONIGHT. WAVES 8 TO 12 FEET
WEDNESDAY MORNING.
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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