170
FZUS63 KMKX 210909
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
309 AM CST THU NOV 21 2024
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
THERE WAS A SLIGHT CHANGE IN THE TIMING OF THE GALE WARNINGS. THEY
ARE IN EFFECT FROM 12 AM TO 6 PM CST TODAY IN THE NORTHERN HALF, AND
FROM 6 AM THURSDAY TO 12 AM CST FRIDAY ACROSS THE SOUTHERN HALF.
LOW PRESSURE OF 29.3 INCHES OVER FAR NORTHERN LAKE MICHIGAN WILL
TRACK DOWN THE AXIS OF LAKE MICHIGAN TODAY, REACHING THE FAR
SOUTHERN TIP BY LATE AFTERNOON WHILE WEAKENING TO 29.5 INCHES. SNOW
AND RAIN WILL REDUCE VISIBILITY ALONG THE AREA OF LOW PRESSURE.
EXPECT WEST- NORTHWESTERLY GALES OF 35 TO 45 KNOTS TODAY NEAR THE
CENTER OF THE LOW. THE MAJORITY OF THESE GUSTS WILL BE ACROSS
WESTERN PORTIONS OF THE LAKE. NORTHERLY GUSTS IN THE WAKE OF THE LOW
WILL TAPER OFF FROM NORTH TO SOUTH THROUGH MID EVENING AS LOW
PRESSURE FILLS AND EXITS TO THE EAST. NORTHWESTERLY WINDS CONTINUE
THROUGH FRIDAY, WITH GUSTS AROUND 30 KNOTS EXPECTED IN THE SOUTHERN
HALF AS HIGH PRESSURE OF 30.2 INCHES BUILDS INTO THE NORTHERN
PLAINS.
LMZ261-362-364-366-563-565-567-868-211615-
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-
309 AM CST THU NOV 21 2024
SHEBOYGAN WI TO PENTWATER MI NORTH...
..GALE WARNING IN EFFECT THROUGH THIS AFTERNOON
TODAY
NORTHWEST GALES TO 40 KT VEERING TO NORTHEAST LATE THIS
MORNING, THEN BECOMING NORTHEAST GALES TO 40 KT EARLY THIS
AFTERNOON DIMINISHING TO 30 KT LATE. RAIN THIS MORNING, THEN
SLIGHT CHANCE OF RAIN THIS AFTERNOON. WAVES 7 TO 10 FT
OCCASIONALLY TO 13 FT.
TONIGHT
NORTH WINDS 15 TO 25 KT INCREASING TO 30 KT. CHANCE OF
RAIN IN THE EVENING, THEN SLIGHT CHANCE OF RAIN OVERNIGHT. WAVES
4 TO 7 FT OCCASIONALLY TO 9 FT BUILDING TO 5 TO 8 FT OCCASIONALLY
TO 10 FT.
FRIDAY
NORTH WINDS TO 30 KT. WAVES 7 TO 10 FT OCCASIONALLY TO
13 FT.
FRIDAY NIGHT
NORTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO
25 KT. CHANCE OF RAIN SHOWERS. WAVES 5 TO 8 FT OCCASIONALLY TO
10 FT SUBSIDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
SATURDAY
NORTHWEST WINDS 15 TO 25 KT. CHANCE OF RAIN SHOWERS.
WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 2 TO 4 FT.
SATURDAY NIGHT
NORTHWEST WINDS 10 TO 20 KT DIMINISHING TO
10 TO 15 KT. WAVES 2 TO 4 FT SUBSIDING TO 1 TO 2 FT.
SUNDAY
SOUTHWEST WINDS 10 TO 15 KT BECOMING SOUTH 10 TO 20 KT.
WAVES 1 TO 2 FT BUILDING TO 2 TO 4 FT.
MONDAY
SOUTHEAST WINDS 10 TO 20 KT BACKING TO NORTHWEST 15 TO
25 KT. RAIN SHOWERS LIKELY. WAVES 2 TO 4 FT BUILDING TO 4 TO 6 FT
OCCASIONALLY TO 8 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-211615-
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-
309 AM CST THU NOV 21 2024
SHEBOYGAN WI TO PENTWATER MI SOUTH...
..GALE WARNING IN EFFECT THROUGH THIS EVENING
TODAY
WEST GALES TO 40 KT VEERING TO NORTH GALES TO 45 KT.
RAIN AND SNOW THIS MORNING, THEN RAIN THIS AFTERNOON. WAVES 7 TO
10 FT OCCASIONALLY TO 13 FT BUILDING TO 12 TO 16 FT OCCASIONALLY
TO 21 FT.
TONIGHT
NORTH GALES TO 45 KT DIMINISHING TO 30 KT. CHANCE OF
RAIN. WAVES 12 TO 16 FT OCCASIONALLY TO 21 FT SUBSIDING TO 7 TO
10 FT OCCASIONALLY TO 13 FT.
FRIDAY
NORTHWEST WINDS TO 30 KT. CHANCE OF RAIN SHOWERS IN THE
MORNING, THEN RAIN SHOWERS LIKELY IN THE AFTERNOON. WAVES 10 TO
14 FT OCCASIONALLY TO 18 FT.
FRIDAY NIGHT
NORTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO
25 KT. CHANCE OF RAIN SHOWERS IN THE EVENING. WAVES 8 TO 12 FT
OCCASIONALLY TO 16 FT SUBSIDING TO 6 TO 9 FT OCCASIONALLY TO
12 FT.
SATURDAY
NORTHWEST WINDS 10 TO 20 KT BECOMING WEST. WAVES 4 TO
7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO
8 FT.
SATURDAY NIGHT
WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST 5 TO
10 KT. WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT.
SUNDAY
SOUTH WINDS 10 TO 20 KT. WAVES 1 TO 3 FT BUILDING TO
3 TO 5 FT.
MONDAY
NORTHWEST WINDS 10 TO 20 KT INCREASING TO 30 KT. CHANCE
OF RAIN SHOWERS. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT BUILDING TO
5 TO 8 FT OCCASIONALLY TO 10 FT.
LMZ761-211615-
MAFOR 2111/
MICHIGAN NORTH...GALE WARNING IN EFFECT...11757 11156 12150 13830
11840. WAVES 6 TO 10 FEET TODAY. WAVES 3 TO 6 FEET BUILDING TO 4
TO 7 FEET TONIGHT.
MICHIGAN SOUTH...GALE WARNING IN EFFECT...11647 11666 11766 11856
12850 11830 11840. WAVES 6 TO 10 FEET BUILDING TO 10 TO 14 FEET
TODAY. WAVES 11 TO 15 FEET SUBSIDING TO 6 TO 9 FEET TONIGHT.
CRONCE
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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