294
FZUS63 KMKX 230842
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
242 AM CST SUN FEB 23 2025
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
30.1 INCH HIGH PRESSURE IS SITUATED OVER NORTH-CENTRAL ONTARIO
THIS MORNING, WITH 29.4 INCH LOW PRESSURE POSITIONED FURTHER WEST
OVER ALBERTA. BOTH FEATURES WILL PROGRESS EASTWARD TODAY, WITH
THE ALBERTA LOW DEEPENING THROUGH 29.0 INCHES AS IT REACHES THE
ONTARIO-MANITOBA BORDER THIS EVENING. THE APPROACH OF THE SURFACE
LOW WILL ALLOW SOUTHWEST WINDS TO STRENGTHEN OVER THE OPEN WATERS
THIS AFTERNOON, WITH WIDESPREAD GUSTS BETWEEN 20-25 KNOTS
ANTICIPATED BY EARLY EVENING OVER THE NORTHERN HALF OF LAKE
MICHIGAN. THE LOW WILL CONTINUE TO DEEPEN TO NEAR 28.9 INCHES
TONIGHT AS IT PROGRESSES ACROSS THE SOUTHERN SHORES OF THE HUDSON
BAY, ALLOWING SOUTHWEST GUSTS TO INCREASE FURTHER ACROSS THE OPEN
WATERS. WIDESPREAD 20-30 KNOT GUSTS ARE FORECAST ACROSS THE
ENTIRETY OF LAKE MICHIGAN BETWEEN MIDNIGHT & MID-MORNING MONDAY.
HIGHER GUSTS EXCEEDING 30 KNOTS ARE POSSIBLE OVER THE NORTHERN
THIRD OF THE OPEN WATERS, WITH A FEW GALE-FORCE READINGS POSSIBLE.
CONDITIONS AREN'T CURRENTLY EXPECTED TO BE WIDESPREAD ENOUGH TO
WARRANT GALE WARNINGS, THOUGH TRENDS WILL BE MONITORED THROUGH
THIS AFTERNOON AND EVENING FOR POTENTIAL CHANGES. GUSTS WILL
GRADUALLY TAPER MONDAY AFTERNOON AND EVENING AS 29.8 INCH HIGH
PRESSURE BUILDS INTO THE CANADIAN GREAT PLAINS.
LMZ261-362-364-366-563-565-567-868-231615-
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-
242 AM CST SUN FEB 23 2025
SHEBOYGAN WI TO PENTWATER MI NORTH...
TODAY
SOUTHWEST WINDS 5 TO 10 KT BECOMING SOUTH LATE THIS
MORNING, THEN BECOMING 10 TO 20 KT EARLY THIS AFTERNOON BECOMING
SOUTH 10 TO 20 KT LATE. CHANCE OF FLURRIES THIS MORNING, THEN
CHANCE OF SPRINKLES AND SLIGHT CHANCE OF SNOW THIS AFTERNOON.
WAVES 2 TO 4 FT.
TONIGHT
SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST TO 30 KT.
CHANCE OF RAIN OVERNIGHT. WAVES 3 TO 5 FT BUILDING TO 6 TO 9 FT
OCCASIONALLY TO 12 FT.
MONDAY
SOUTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT.
WAVES 6 TO 9 FT OCCASIONALLY TO 12 FT SUBSIDING TO 4 TO 7 FT
OCCASIONALLY TO 9 FT.
MONDAY NIGHT
WEST WINDS 10 TO 20 KT BECOMING NORTHWEST 10 TO
15 KT. WAVES 3 TO 5 FT SUBSIDING TO 1 TO 3 FT.
TUESDAY
NORTHWEST WINDS 10 TO 15 KT BECOMING WEST. WAVES 1 TO
2 FT.
TUESDAY NIGHT
SOUTH WINDS 5 TO 10 KT INCREASING TO 10 TO
15 KT. WAVES 1 TO 2 FT.
WEDNESDAY
SOUTH WINDS 10 TO 15 KT VEERING TO NORTHWEST. CHANCE
OF RAIN AND SNOW. WAVES 2 TO 4 FT.
THURSDAY
NORTHWEST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-231615-
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-
242 AM CST SUN FEB 23 2025
SHEBOYGAN WI TO PENTWATER MI SOUTH...
TODAY
SOUTHWEST WINDS 10 TO 15 KT BECOMING SOUTH 10 TO 20 KT.
CHANCE OF SPRINKLES. WAVES 2 TO 4 FT.
TONIGHT
SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST TO 30 KT.
WAVES 3 TO 5 FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
MONDAY
SOUTHWEST WINDS TO 30 KT DIMINISHING TO 10 TO 20 KT.
WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 4 TO 7 FT
OCCASIONALLY TO 9 FT.
MONDAY NIGHT
SOUTHWEST WINDS 10 TO 20 KT BECOMING WEST 10 TO
15 KT. CHANCE OF RAIN. WAVES 3 TO 5 FT SUBSIDING TO 2 TO 4 FT.
TUESDAY
NORTHWEST WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
TUESDAY NIGHT
SOUTH WINDS 5 TO 10 KT INCREASING TO 10 TO
15 KT. WAVES 1 TO 2 FT.
WEDNESDAY
SOUTH WINDS 10 TO 20 KT VEERING TO WEST. RAIN
LIKELY. WAVES 2 TO 4 FT.
THURSDAY
NORTHWEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
LMZ761-231615-
MAFOR 2311/
MICHIGAN NORTH 11600 11500 13420 11430 11440 11540. WAVES 1 TO 3
FEET TODAY. WAVES 2 TO 4 FEET BUILDING TO 5 TO 8 FEET TONIGHT.
MICHIGAN SOUTH 12510 14420 12530. WAVES 1 TO 3 FEET TODAY. WAVES
1 TO 3 FEET BUILDING TO 3 TO 5 FEET TONIGHT.
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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