446
FZUS63 KMKX 032003
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
203 PM CST TUE FEB 3 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
30.4 INCH HIGH PRESSURE IS CENTERED OVER THE UPPER MISSISSIPPI
RIVER VALLEY THIS AFTERNOON, WITH 30.1 INCH LOW PRESSURE ALONG
THE ONTARIO-QUEBEC BORDER. PLACEMENT OF THE TWO FEATURES IS
RESULTING IN GENERALLY LIGHT NORTHERLY WINDS ACROSS THE OPEN
WATERS. WINDS WILL WEAKEN FURTHER TONIGHT, BECOMING LIGHT AND
VARIABLE WEDNESDAY MORNING AS THE AFOREMENTIONED AREA OF HIGH
PRESSURE MOVES ACROSS LAKE MICHIGAN. LAKE EFFECT SNOW IS POSSIBLE
OVER THE SOUTHERN HALF OF THE OPEN WATERS LATE TONIGHT THROUGH
WEDNESDAY AFTERNOON. WINDS WILL TREND WEST-SOUTHWESTERLY
WEDNESDAY NIGHT INTO THURSDAY AS 29.5 INCH LOW PRESSURE MOVES FROM
THE CANADIAN GREAT PLAINS TO THE WESTERN HUDSON BAY. AREAS OF
SNOW ARE POSSIBLE DURING THE DAY ON THURSDAY AHEAD OF THE
DEVELOPING LOW.
LOW PRESSURE WILL DEEPEN FURTHER TO NEAR 29.3 INCHES OVER THE
CENTRAL HUDSON BAY THURSDAY NIGHT, ULTIMATELY PROGRESSING INTO
NORTHERN QUEBEC DURING THE DAY ON FRIDAY. THE LOW WILL PULL A COLD
FRONT ACROSS THE OPEN WATERS IN THE PROCESS, RESULTING IN A GUSTY
NORTHWEST WIND SHIFT EARLY FRIDAY MORNING. A PERIOD OF
NORTHWESTERLY GALES REMAINS POSSIBLE DURING THE AFTERNOON AND
EVENING HOURS, WITH TRENDS BEING MONITORED FOR POTENTIAL HEADLINES
IN COMING FORECASTS. AREAS OF SNOW SHOWERS WILL CONTINUE ALONG &
AHEAD OF THE PASSING FRONT THURSDAY NIGHT INTO EARLY FRIDAY
MORNING. ELEVATED WAVE HEIGHTS WILL COMBINE WITH ARCTIC AIR
SETTLING IN BEHIND THE COLD FRONT TO SUPPORT AREAS OF MODERATE
FREEZING SPRAY FRIDAY AFTERNOON INTO SATURDAY MORNING. HEAVY
FREEZING SPRAY IS POSSIBLE, WITH THE NEED FOR POSSIBLE HEADLINES
BEING EVALUATED IN COMING FORECASTS. WINDS WILL BRIEFLY TAPER
SATURDAY AFTERNOON AS 30.4 INCH HIGH PRESSURE CROSSES LAKE
MICHIGAN, PRIOR TO INCREASING ONCE MORE SATURDAY NIGHT AS THE
FEATURE MOVES EAST OF THE WATERS.
LMZ261-362-364-366-563-565-567-868-040415-
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-
203 PM CST TUE FEB 3 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
TONIGHT
NORTH WINDS 10 TO 15 KT DIMINISHING TO 5 TO 10 KT.
SLIGHT CHANCE OF LIGHT FREEZING RAIN THIS EVENING. WAVES 1 TO
3 FT.
WEDNESDAY
NORTHWEST WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
WEDNESDAY NIGHT
NORTHWEST WINDS 5 TO 10 KT BACKING TO
SOUTHWEST 10 TO 15 KT. WAVES 1 TO 2 FT.
THURSDAY
SOUTHWEST WINDS 15 TO 25 KT INCREASING TO 30 KT.
CHANCE OF SNOW IN THE MORNING. WAVES 3 TO 5 FT BUILDING TO 4 TO
6 FT OCCASIONALLY TO 8 FT.
THURSDAY NIGHT
SOUTHWEST WINDS 15 TO 25 KT BECOMING WEST 10 TO
20 KT. CHANCE OF SNOW OVERNIGHT. WAVES 4 TO 6 FT OCCASIONALLY TO
8 FT.
FRIDAY
NORTHWEST GALES TO 35 KT BECOMING NORTH. FREEZING SPRAY
IN THE AFTERNOON. WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT BUILDING
TO 10 TO 14 FT OCCASIONALLY TO 18 FT.
FRIDAY NIGHT
NORTH GALES TO 40 KT DIMINISHING TO GALES TO
35 KT. FREEZING SPRAY. WAVES 10 TO 14 FT OCCASIONALLY TO 18 FT
SUBSIDING TO 8 TO 11 FT OCCASIONALLY TO 14 FT.
SATURDAY
NORTHWEST WINDS TO 30 KT BECOMING WEST 10 TO 20 KT.
WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 3 TO 5 FT.
SUNDAY
EAST WINDS TO 30 KT DIMINISHING TO 10 TO 20 KT. WAVES
4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 4 TO 6 FT
OCCASIONALLY TO 8 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-040415-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM
OFFSHORE TO MID LAKE-
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 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 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-
LAKE MICHIGAN FROM ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO
MID LAKE-
203 PM CST TUE FEB 3 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
TONIGHT
NORTH WINDS 10 TO 15 KT BECOMING NORTHEAST. SLIGHT
CHANCE OF SNOW THIS EVENING, THEN CHANCE OF SNOW OVERNIGHT. WAVES
2 TO 4 FT.
WEDNESDAY
NORTH WINDS 10 TO 15 KT BECOMING NORTHWEST 5 TO
10 KT. CHANCE OF SNOW. WAVES 1 TO 3 FT.
WEDNESDAY NIGHT
NORTHWEST WINDS 5 TO 10 KT BECOMING SOUTHWEST
10 TO 15 KT. WAVES 1 TO 3 FT.
THURSDAY
SOUTHWEST WINDS 10 TO 20 KT INCREASING TO 15 TO
25 KT. CHANCE OF SNOW IN THE MORNING. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
THURSDAY NIGHT
SOUTHWEST WINDS 15 TO 25 KT BECOMING WEST.
CHANCE OF SNOW AND RAIN OVERNIGHT. WAVES 4 TO 7 FT OCCASIONALLY
TO 9 FT.
FRIDAY
NORTHWEST WINDS TO 30 KT BECOMING NORTH GALES TO 35 KT.
WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT BUILDING TO 10 TO 14 FT
OCCASIONALLY TO 18 FT.
FRIDAY NIGHT
NORTH GALES TO 40 KT DIMINISHING TO GALES TO
35 KT. FREEZING SPRAY. WAVES 10 TO 14 FT OCCASIONALLY TO 18 FT.
SATURDAY
NORTH WINDS TO 30 KT BACKING TO SOUTHWEST 10 TO
20 KT. FREEZING SPRAY. WAVES 6 TO 9 FT OCCASIONALLY TO 12 FT
SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
SUNDAY
EAST WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT. WAVES
4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 4 TO 6 FT
OCCASIONALLY TO 8 FT.
LMZ761-040415-
MAFOR 0323/
MICHIGAN NORTH 13810 11800 14700. WAVES 1 TO 3 FEET TONIGHT.
WAVES 1 FOOT OR LESS WEDNESDAY. WAVE HEIGHTS ARE FOR ICE FREE
AREAS.
MICHIGAN SOUTH 12810 11110 11100 12810 11710 11700. A CHANCE OF
SNOW OVERNIGHT AND WEDNESDAY. WAVES 1 TO 3 FEET TONIGHT. WAVES 2
FEET OR LESS WEDNESDAY.
QUIGLEY
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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