547
FZUS63 KMKX 060259
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
859 PM CST THU FEB 5 2026
FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE MICHIGAN.
WAVES ARE PROVIDED AS A RANGE OF SIGNIFICANT WAVE HEIGHTS, WHICH
IS THE AVERAGE OF THE HIGHEST 1/3 OF THE WAVE, ALONG WITH THE
AVERAGE HEIGHT OF THE HIGHEST 10% OF THE WAVES WHICH WILL
OCCASIONALLY BE ENCOUNTERED.
SYNOPSIS
LOW PRESSURE AROUND 29.4 INCHES WILL TRACK EAST ACROSS JAMES BAY
TONIGHT AND ENTER QUEBEC BY FRIDAY AFTERNOON. AS THIS LOW MOVES
EAST A COLD FRONT WILL MOVE ACROSS THE LAKE FRIDAY AFTERNOON.
LIGHT WEST WINDS THIS EVENING WILL TURN TO NORTHWESTERLY BY DAY
BREAK. NORTHWEST WINDS WILL INCREASE ALONG AND BEHIND THE COLD
FRONT AND GRADUALLY VEER NORTHERLY BY FRIDAY EVENING. GALE FORCE
GUSTS UP TO 40KT ARE EXPECTED AND A GALE WARNING IS IN EFFECT
ACROSS THE NORTHERN TWO THIRDS OF THE LAKE FOR THESE GUSTS.
ADDITIONALLY, A PERIOD OF HEAVY FREEZING SPRAY IS EXPECTED FROM
FRIDAY AFTERNOON INTO SATURDAY MORNING AND HAVE ISSUED A HEAVY
FREEZING SPRAY WARNING. NORTHERLY WINDS GRADUALLY WEAKEN THROUGH
THE SATURDAY AS HIGH PRESSURE BUILDS ACROSS THE REGION. SOUTHERLY
WINDS RETURN WITH MILDER TEMPS AS THE HIGH PRESSURE PUSHES EAST
FOR SUNDAY.
LMZ261-362-364-366-563-565-567-868-060415-
LAKE MICHIGAN FROM SEUL CHOIX POINT TO ROCK ISLAND PASSAGE 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN SOUTH OF A LINE FROM SEUL CHOIX POINT TO THE
MACKINAC BRIDGE AND NORTH OF A LINE FROM CHARLEVOIX MI TO SOUTH
FOX ISLAND 5 NM OFFSHORE-
LAKE MICHIGAN FROM CHARLEVOIX TO POINT BETSIE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI-
LAKE MICHIGAN FROM STURGEON BAY TO TWO RIVERS WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID
LAKE-
859 PM CST THU FEB 5 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
...GALE WARNING IN EFFECT FROM FRIDAY MORNING THROUGH FRIDAY
EVENING...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM FRIDAY MORNING
THROUGH LATE FRIDAY NIGHT...
TODAY
SOUTHWEST WINDS 10 TO 20 KT. SNOW THIS MORNING, THEN
CHANCE OF SNOW THIS AFTERNOON. WAVES 2 TO 4 FT BUILDING TO 4 TO
6 FT OCCASIONALLY TO 8 FT.
TONIGHT
SOUTHWEST WINDS 10 TO 20 KT BECOMING NORTHWEST. CHANCE
OF SNOW. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 2 TO
4 FT.
FRIDAY
NORTHWEST WINDS TO 30 KT BECOMING NORTH GALES TO 40 KT.
SCATTERED SNOW SHOWERS. HEAVY FREEZING SPRAY IN THE AFTERNOON.
WAVES 3 TO 5 FT BUILDING TO 12 TO 16 FT OCCASIONALLY TO 21 FT.
FRIDAY NIGHT
NORTH GALES TO 40 KT DIMINISHING TO 30 KT
OVERNIGHT. HEAVY FREEZING SPRAY. SCATTERED SNOW SHOWERS IN THE
EVENING, THEN CHANCE OF SNOW OVERNIGHT. WAVES 12 TO 16 FT
OCCASIONALLY TO 21 FT.
SATURDAY
NORTH WINDS 15 TO 25 KT BECOMING NORTHWEST 10 TO
15 KT IN THE AFTERNOON. HEAVY FREEZING SPRAY IN THE MORNING.
WAVES 6 TO 9 FT OCCASIONALLY TO 12 FT SUBSIDING TO 4 TO 6 FT
OCCASIONALLY TO 8 FT.
SATURDAY NIGHT
WEST WINDS 10 TO 15 KT BECOMING SOUTH 10 TO
20 KT. WAVES 1 TO 3 FT.
SUNDAY
SOUTH WINDS 10 TO 20 KT. WAVES 3 TO 5 FT.
MONDAY
SOUTH WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
LMZ669-671-673-675-870-872-874-876-060415-
LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5 NM OFFSHORE
TO MID LAKE-
LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM GRAND HAVEN TO WHITEHALL MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM HOLLAND TO GRAND HAVEN MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM SOUTH HAVEN TO HOLLAND MI 5 NM OFFSHORE TO MID
LAKE-
859 PM CST THU FEB 5 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH TO WINTHROP HARBOR IL TO SOUTH
HAVEN MI...
...GALE WARNING IN EFFECT FROM FRIDAY MORNING THROUGH FRIDAY
EVENING...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM FRIDAY MORNING
THROUGH LATE FRIDAY NIGHT...
TODAY
SOUTHWEST WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
SNOW THIS MORNING, THEN CHANCE OF SNOW THIS AFTERNOON. WAVES 2 TO
4 FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
TONIGHT
SOUTHWEST WINDS 15 TO 25 KT BECOMING WEST 10 TO 20 KT.
CHANCE OF SNOW AND SLIGHT CHANCE OF LIGHT FREEZING DRIZZLE IN THE
EVENING, THEN CHANCE OF SNOW OVERNIGHT. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT SUBSIDING TO 3 TO 5 FT.
FRIDAY
NORTHWEST WINDS 15 TO 25 KT BECOMING NORTH GALES TO
40 KT. SNOW LIKELY IN THE MORNING, THEN SCATTERED SNOW SHOWERS IN
THE AFTERNOON. FREEZING SPRAY IN THE AFTERNOON. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT BUILDING TO 12 TO 16 FT OCCASIONALLY TO
21 FT.
FRIDAY NIGHT
NORTH GALES TO 40 KT DIMINISHING TO 30 KT
OVERNIGHT. HEAVY FREEZING SPRAY. CHANCE OF SNOW OVERNIGHT. WAVES
14 TO 18 FT OCCASIONALLY TO 23 FT.
SATURDAY
NORTH WINDS 15 TO 25 KT BECOMING NORTHWEST 10 TO
15 KT IN THE AFTERNOON. FREEZING SPRAY IN THE MORNING. WAVES 7 TO
10 FT OCCASIONALLY TO 13 FT SUBSIDING TO 4 TO 7 FT OCCASIONALLY
TO 9 FT.
SATURDAY NIGHT
SOUTHWEST WINDS 10 TO 15 KT BECOMING SOUTH
10 TO 20 KT. WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT.
SUNDAY
SOUTH WINDS 10 TO 20 KT. WAVES 3 TO 5 FT.
MONDAY
SOUTH WINDS 10 TO 20 KT. WAVES 4 TO 7 FT OCCASIONALLY
TO 9 FT.
LMZ080-777-779-878-060415-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WILMETTE HARBOR IL TO MICHIGAN CITY IN 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO
MID LAKE-
859 PM CST THU FEB 5 2026
WINTHROP HARBOR IL TO SOUTH HAVEN MI SOUTH...
...GALE WARNING IN EFFECT FROM FRIDAY MORNING THROUGH FRIDAY
EVENING...
TODAY
SOUTHWEST WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
CHANCE OF SNOW. WAVES 1 TO 3 FT BUILDING TO 3 TO 5 FT.
TONIGHT
SOUTHWEST WINDS 15 TO 25 KT BECOMING WEST 10 TO 20 KT.
CHANCE OF FLURRIES AND SLIGHT CHANCE OF LIGHT FREEZING DRIZZLE IN
THE EVENING, THEN CHANCE OF SNOW OVERNIGHT. WAVES 3 TO 5 FT.
FRIDAY
NORTHWEST WINDS 15 TO 25 KT INCREASING TO 30 KT LATE IN
THE MORNING, THEN BECOMING NORTH GALES TO 35 KT EARLY IN THE
AFTERNOON INCREASING TO GALES TO 40 KT LATE. SNOW AND RAIN
SHOWERS LIKELY IN THE MORNING, THEN SCATTERED SNOW SHOWERS WITH A
CHANCE OF RAIN SHOWERS IN THE AFTERNOON. WAVES 3 TO 5 FT BUILDING
TO 12 TO 16 FT OCCASIONALLY TO 21 FT.
FRIDAY NIGHT
NORTH GALES TO 40 KT DIMINISHING TO 30 KT
OVERNIGHT. FREEZING SPRAY. CHANCE OF SNOW OVERNIGHT. WAVES 14 TO
18 FT OCCASIONALLY TO 23 FT.
SATURDAY
NORTH WINDS 10 TO 20 KT BECOMING NORTHWEST 10 TO
15 KT. FREEZING SPRAY IN THE MORNING. WAVES 8 TO 11 FT
OCCASIONALLY TO 14 FT SUBSIDING TO 4 TO 7 FT OCCASIONALLY TO
9 FT.
SATURDAY NIGHT
SOUTH WINDS 10 TO 15 KT INCREASING TO 10 TO
20 KT. WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT.
SUNDAY
SOUTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT.
WAVES 2 TO 4 FT.
MONDAY
SOUTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT.
WAVES 2 TO 4 FT.
LMZ761-060415-
MAFOR 0511/
MICHIGAN NORTH 11520 12537 11530 11520 12620 11627. WAVES 1 TO 3
FEET BUILDING TO 3 TO 5 FEET TODAY. WAVES 3 TO 5 FEET SUBSIDING
TO 2 TO 4 FEET TONIGHT. WAVE HEIGHTS ARE FOR ICE FREE AREAS.
MICHIGAN SOUTH 11527 11537 14530 11620 11627. WAVES 1 TO 3 FEET
BUILDING TO 3 TO 6 FEET TODAY. WAVES 3 TO 6 FEET SUBSIDING TO 2
TO 4 FEET TONIGHT.
PATTERSON
EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT
WEATHER.GOV/MKX/GLFTABLE
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
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