033
FZUS63 KMKX 270805
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
305 AM CDT TUE OCT 27 2020
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
HIGH PRESSURE AROUND 30.5 INCHES WILL CONTINUE TO MOVE SOUTH
INTO THE SOUTHERN PLAINS THROUGH TODAY, WHILE A SURFACE LOW
AVERAGING 29.5 INCHES DEVELOPS IN THE LEE OF THE CANADIAN
ROCKIES. THIS SURFACE LOW WILL WEAKEN SLIGHTLY AS IT TRACKS EAST
ACROSS CENTRAL CANADA AND MERGES WITH ANOTHER SURFACE LOW OVER THE
HUDSON BAY ON WEDNESDAY. AS THIS HAPPENS, A PERIOD OF SOUTHWEST
GALES APPEAR LIKELY ACROSS THE NORTHERN THIRD OF THE LAKE LATE
TONIGHT AND INTO WEDNESDAY. BEHIND THE DEPARTING SURFACE LOW, HIGH
PRESSURE OF 30.2 INCHES MOVES IN ACROSS THE UPPER GREAT LAKES.
LMZ261-362-364-366-563-565-271515-
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-
305 AM CDT TUE OCT 27 2020
TWO RIVERS WI TO MANISTEE MI NORTH...
...GALE WARNING IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY
MORNING...
TODAY
WEST WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT EARLY
THIS AFTERNOON, THEN BECOMING SOUTHWEST 15 TO 25 KT LATE. CHANCE
OF RAIN AND SNOW SHOWERS THIS MORNING. WAVES 2 TO 4 FT BUILDING
TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
TONIGHT
SOUTHWEST WINDS TO 30 KT INCREASING TO GALES TO 40 KT.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT BUILDING TO 8 TO 12 FT
OCCASIONALLY TO 16 FT.
WEDNESDAY
SOUTHWEST GALES TO 35 KT BECOMING WEST 15 TO 25 KT.
WAVES 8 TO 12 FT OCCASIONALLY TO 16 FT SUBSIDING TO 4 TO 7 FT
OCCASIONALLY TO 9 FT.
WEDNESDAY NIGHT
NORTHWEST WINDS 10 TO 20 KT BECOMING NORTH.
WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 2 TO 4 FT.
THURSDAY
NORTH WINDS 10 TO 20 KT BECOMING NORTHEAST 15 TO
25 KT. WAVES 2 TO 4 FT.
THURSDAY NIGHT
NORTH WINDS 15 TO 25 KT DIMINISHING TO 10 TO
20 KT. WAVES 3 TO 5 FT.
FRIDAY
NORTH WINDS 10 TO 20 KT BECOMING NORTHWEST 10 TO 15 KT.
WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT.
SATURDAY
SOUTH GALES TO 45 KT. WAVES 4 TO 6 FT OCCASIONALLY TO
8 FT BUILDING TO 5 TO 8 FT OCCASIONALLY TO 10 FT.
LMZ567-868-271515-
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-
305 AM CDT TUE OCT 27 2020
TWO RIVERS WI TO MANISTEE MI SOUTH TO SHEBOYGAN WI TO PENTWATER
MI...
TODAY
WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST 10 TO 20 KT.
CHANCE OF RAIN AND SNOW SHOWERS THIS MORNING. WAVES 1 TO 3 FT.
TONIGHT
SOUTHWEST WINDS 15 TO 25 KT INCREASING TO 30 KT. WAVES
3 TO 5 FT BUILDING TO 6 TO 9 FT OCCASIONALLY TO 12 FT.
WEDNESDAY
SOUTHWEST WINDS TO 30 KT DIMINISHING TO 10 TO 20 KT.
WAVES 6 TO 9 FT OCCASIONALLY TO 12 FT SUBSIDING TO 4 TO 6 FT
OCCASIONALLY TO 8 FT.
WEDNESDAY NIGHT
WEST WINDS 10 TO 20 KT BECOMING NORTH 10 TO
15 KT. WAVES 3 TO 5 FT SUBSIDING TO 1 TO 3 FT.
THURSDAY
NORTHEAST WINDS 10 TO 20 KT INCREASING TO 15 TO
25 KT. WAVES 3 TO 5 FT.
THURSDAY NIGHT
NORTH WINDS 15 TO 25 KT DIMINISHING TO 10 TO
20 KT. WAVES 3 TO 5 FT.
FRIDAY
NORTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT.
WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT.
SATURDAY
SOUTH WINDS TO 30 KT. WAVES 3 TO 5 FT BUILDING TO
4 TO 6 FT OCCASIONALLY TO 8 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-271515-
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-
305 AM CDT TUE OCT 27 2020
SHEBOYGAN WI TO PENTWATER MI SOUTH...
TODAY
NORTHWEST WINDS 10 TO 15 KT BECOMING WEST. CHANCE OF
RAIN SHOWERS THIS MORNING. WAVES 1 TO 3 FT.
TONIGHT
WEST WINDS 10 TO 20 KT BECOMING SOUTHWEST TO 30 KT.
WAVES 2 TO 4 FT BUILDING TO 5 TO 8 FT OCCASIONALLY TO 10 FT.
WEDNESDAY
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.
WEDNESDAY NIGHT
WEST WINDS 10 TO 20 KT VEERING TO NORTH. WAVES
3 TO 5 FT SUBSIDING TO 1 TO 3 FT.
THURSDAY
NORTHEAST WINDS 10 TO 20 KT INCREASING TO 30 KT IN
THE AFTERNOON. WAVES 2 TO 4 FT BUILDING TO 3 TO 5 FT.
THURSDAY NIGHT
NORTH WINDS TO 30 KT DIMINISHING TO 15 TO
25 KT. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
FRIDAY
NORTH WINDS 10 TO 20 KT. WAVES 4 TO 6 FT OCCASIONALLY
TO 8 FT SUBSIDING TO 3 TO 5 FT.
SATURDAY
SOUTH WINDS TO 30 KT. WAVES 2 TO 4 FT BUILDING TO
4 TO 6 FT OCCASIONALLY TO 8 FT.
LMZ761-271515-
MAFOR 2709/
MICHIGAN NORTH...GALE WARNING IN EFFECT...11710 11610 11620 11520
11530 11540 12550. CHANCE OF RAIN AND SNOW SHOWERS THIS MORNING.
WAVES 1 TO 3 FEET BUILDING TO 3 TO 5 FEET TODAY. WAVES 4 TO 7
FEET BUILDING TO 8 TO 11 FEET THE REST OF TONIGHT.
MICHIGAN SOUTH 11710 13610 11620 11630 12540. CHANCE OF RAIN
SHOWERS THIS MORNING. WAVES 1 TO 3 FEET TODAY. WAVES 2 TO 4 FEET
BUILDING TO 4 TO 7 FEET THE REST OF TONIGHT.
CMILLER
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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