639
FZUS63 KMKX 021430
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
830 AM CST MON MAR 2 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 29.5 INCHES WILL MOVE EAST INTO HUDSON BAY
TODAY, WITH HIGH PRESSURE AROUND 30.6 INCHES MOVING EAST THROUGH
THE NORTHEASTERN CONUS. THIS WILL DRIVE BREEZY SOUTH TO SOUTHEAST
WINDS ACROSS LAKE MICHIGAN TODAY, PARTICULARLY OVER THE NORTHERN
THIRD OF THE LAKE WHERE GUSTS TO 30 KNOTS ARE POSSIBLE. WINDS WILL
SUBSIDE TONIGHT INTO TUESDAY AS BOTH PRESSURE SYSTEMS DEPART
EASTWARD, WITH LIGHT AND VARIABLE WINDS TUESDAY AFTERNOON THROUGH
TUESDAY NIGHT.
LIGHT EAST TO NORTHEAST WINDS DEVELOP INTO WEDNESDAY AS WEAK LOW
PRESSURE AROUND 29.9 INCHES DEVELOPS OVER THE CENTRAL GREAT
PLAINS, TRACKING NORTHEASTWARD THROUGH THE MIDDLE MISSISSIPPI
RIVER VALLEY. THE LOW WILL APPROACH AND ULTIMATELY PASS NEAR OR
JUST SOUTH OF THE SOUTHERN PORTIONS OF THE LAKE WEDNESDAY NIGHT
INTO THURSDAY. EAST TO NORTHEAST WINDS WILL LINGER. PERIODS OF
RAIN WILL ACCOMPANY THE LOW WEDNESDAY INTO THURSDAY, WITH A FEW
THUNDERSTORMS POSSIBLE OVER SOUTHERN LAKE MICHIGAN WEDNESDAY
AFTERNOON AND EVENING.
ANOTHER LOW PRESSURE SYSTEM AROUND 29.5 INCHES WILL FORM IN THE
CENTRAL GREAT PLAINS THURSDAY NIGHT, AND IS FORECAST TO PROGRESS
TOWARD THE UPPER MISSISSIPPI RIVER VALLEY DURING THE DAY ON
FRIDAY. THE APPROACH OF THE LOW WILL BRING INCREASING SOUTHERLY
WINDS TO THE OPEN WATERS ON FRIDAY, ALONG WITH WIDESPREAD AREAS OF
RAIN AND EMBEDDED THUNDERSTORMS.
THE LOW WILL MOVE NORTHEAST ACROSS THE REGION AND INTO ONTARIO
FRIDAY NIGHT THROUGH SATURDAY, DRAGGING A COLD FRONT ACROSS LAKE
MICHIGAN IN THE PROCESS. ADDITIONAL RAIN IS EXPECTED DURING THE
FRONTAL PASSAGE. WINDS WILL VEER SOUTHWEST TO WEST AS THE FRONT
PASSES.
LMZ261-362-364-366-563-565-567-868-022215-
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-
830 AM CST MON MAR 2 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
REST OF TODAY
SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST TO
30 KT. WAVES 1 TO 3 FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO
9 FT.
TONIGHT
SOUTHWEST WINDS 15 TO 25 KT BECOMING SOUTH 5 TO 10 KT.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 2 TO 4 FT.
TUESDAY
SOUTH WINDS 5 TO 10 KT BECOMING SOUTHEAST. WAVES 1 TO
3 FT SUBSIDING TO 1 TO 2 FT.
TUESDAY NIGHT
SOUTHEAST WINDS LESS THAN 10 KT BECOMING EAST.
WAVES 1 FT OR LESS.
WEDNESDAY
EAST WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
WEDNESDAY NIGHT
EAST WINDS 5 TO 10 KT INCREASING TO 10 TO
15 KT. WAVES 1 TO 2 FT.
THURSDAY
EAST WINDS 10 TO 20 KT. CHANCE OF RAIN. WAVES 1 TO
3 FT.
FRIDAY
SOUTHEAST WINDS 10 TO 20 KT. CHANCE OF RAIN. WAVES 1 TO
3 FT BUILDING TO 3 TO 5 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-022215-
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-
830 AM CST MON MAR 2 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
REST OF TODAY
SOUTHEAST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT
BUILDING TO 3 TO 5 FT.
TONIGHT
SOUTHEAST WINDS 10 TO 15 KT DIMINISHING TO 5 TO 10 KT.
WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT.
TUESDAY
SOUTHEAST WINDS 5 TO 10 KT BECOMING EAST. CHANCE OF
RAIN. WAVES 1 TO 2 FT.
TUESDAY NIGHT
NORTHEAST WINDS 5 TO 10 KT BECOMING EAST. WAVES
1 FT OR LESS.
WEDNESDAY
EAST WINDS 10 TO 15 KT. CHANCE OF RAIN. WAVES 1 TO
2 FT.
WEDNESDAY NIGHT
EAST WINDS 10 TO 15 KT. CHANCE OF RAIN. WAVES
1 TO 3 FT.
THURSDAY
EAST WINDS 10 TO 15 KT BECOMING SOUTHEAST. RAIN
LIKELY. WAVES 2 TO 4 FT.
FRIDAY
SOUTHEAST WINDS 10 TO 20 KT BECOMING SOUTH. CHANCE OF
RAIN. WAVES 3 TO 5 FT.
LMZ761-022215-
MAFOR 0217/
MICHIGAN NORTH 11430 11540 11530 11520 11420 11410 12400. WAVES 3
TO 6 FEET THIS AFTERNOON. WAVES 3 TO 6 FEET SUBSIDING TO 1 TO 3
FEET TONIGHT. WAVES 2 FEET OR LESS TUESDAY MORNING.
MICHIGAN SOUTH 12320 13310 13300. A CHANCE OF RAIN TUESDAY
MORNING. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET THIS
AFTERNOON. WAVES 1 TO 3 FEET TONIGHT. WAVES 2 FEET OR LESS
TUESDAY MORNING.
SHEPPARD
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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