659
FZUS63 KMKX 201500
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
900 AM CST MON JAN 20 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
ARCTIC HIGH PRESSURE AROUND 31.0 INCHES WILL SETTLE INTO THE
NORTHERN ROCKY MOUNTAINS TODAY, DRIFTING SOUTH INTO THE CENTRAL
ROCKY MOUNTAINS THROUGH TUESDAY. THE PROGRESSION OF THE HIGH WILL
HELP TO MAINTAIN BREEZY WEST NORTHWEST WINDS ACROSS LAKE MICHIGAN
THROUGH THE FIRST HALF OF THIS WEEK.
THE BREEZY WEST NORTHWEST WINDS WILL COMBINE WITH ELEVATED WAVE
HEIGHTS AND FRIGID AIR TEMPERATURES TO SUPPORT HEAVY FREEZING
SPRAY THROUGH TUESDAY AFTERNOON.
HEAVY FREEZING SPRAY WARNINGS REMAIN IN EFFECT FOR THE SOUTHERN
OPEN WATERS OF LAKE MICHIGAN THROUGH 6 PM CST TUESDAY. A HEAVY
FREEZING SPRAY WARNING IS ALSO IN EFFECT FOR THE NORTHERN THIRD OF
THE OPEN WATERS UNTIL 6 AM CST TUESDAY MORNING. IT IS POSSIBLE
THAT AREAS OF HEAVY FREEZING SPRAY COULD CONTINUE LONGER OVER
PORTIONS OF THE WARNED AREA, WITH TRENDS BEING MONITORED OVER
COMING FORECASTS FOR ANY POTENTIAL EXTENSIONS.
LOW PRESSURE AROUND 29.5 INCHES WILL MOVE SOUTHEAST INTO THE
WESTERN GREAT LAKES REGION TUESDAY NIGHT INTO WEDNESDAY, PROMOTING
A SOUTHWEST WIND SHIFT OVER LAKE MICHIGAN. SOUTHWEST WINDS COULD
BE BREEZY WEDNESDAY. THIS WILL SUPPORT CONTINUED FREEZING SPRAY
POTENTIAL INTO WEDNESDAY, WITH ANY FREEZING SPRAY EXPECTED TO BE
LIGHTER RELATIVE TO EARLIER IN THE WEEK.
LMZ261-362-364-366-563-565-202215-
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-
900 AM CST MON JAN 20 2025
TWO RIVERS WI TO MANISTEE MI NORTH...
..HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH LATE TONIGHT
REST OF TODAY
WEST WINDS 10 TO 20 KT INCREASING TO 15 TO
25 KT. HEAVY FREEZING SPRAY. CHANCE OF SNOW. WAVES 3 TO 5 FT.
TONIGHT
WEST WINDS 15 TO 25 KT. HEAVY FREEZING SPRAY. CHANCE
OF SNOW. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
TUESDAY
WEST WINDS 15 TO 25 KT. HEAVY FREEZING SPRAY IN THE
MORNING. CHANCE OF SNOW. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
TUESDAY NIGHT
SOUTHWEST WINDS TO 30 KT. FREEZING SPRAY
OVERNIGHT. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT BUILDING TO 5 TO
8 FT OCCASIONALLY TO 10 FT.
WEDNESDAY
SOUTHWEST WINDS TO 30 KT. FREEZING SPRAY. SNOW
LIKELY IN THE MORNING, THEN CHANCE OF SNOW IN THE AFTERNOON.
WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT.
WEDNESDAY NIGHT
WEST WINDS 15 TO 25 KT BECOMING NORTHWEST
10 TO 20 KT. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO
4 TO 6 FT OCCASIONALLY TO 8 FT.
THURSDAY
NORTHWEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
FRIDAY
WEST WINDS 10 TO 20 KT BECOMING SOUTHWEST 15 TO 25 KT.
WAVES 2 TO 4 FT BUILDING TO 3 TO 5 FT.
LMZ080-567-669-671-673-675-777-779-868-870-872-874-876-878-202215-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 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 PENTWATER TO MANISTEE MI 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-
900 AM CST MON JAN 20 2025
TWO RIVERS WI TO MANISTEE MI SOUTH...
...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH TUESDAY
AFTERNOON...
REST OF TODAY
WEST WINDS 15 TO 25 KT INCREASING TO 30 KT.
HEAVY FREEZING SPRAY. CHANCE OF SNOW. WAVES 5 TO 8 FT
OCCASIONALLY TO 10 FT.
TONIGHT
WEST WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT. HEAVY
FREEZING SPRAY. CHANCE OF SNOW. WAVES 6 TO 9 FT OCCASIONALLY TO
12 FT.
TUESDAY
WEST WINDS 15 TO 25 KT. HEAVY FREEZING SPRAY. CHANCE
OF SNOW. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
TUESDAY NIGHT
SOUTHWEST WINDS 15 TO 25 KT INCREASING TO 30 KT.
FREEZING SPRAY OVERNIGHT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT
BUILDING TO 6 TO 9 FT OCCASIONALLY TO 12 FT.
WEDNESDAY
SOUTHWEST WINDS TO 30 KT. FREEZING SPRAY. CHANCE OF
SNOW. WAVES 8 TO 11 FT OCCASIONALLY TO 14 FT.
WEDNESDAY NIGHT
SOUTHWEST WINDS 15 TO 25 KT BECOMING WEST
10 TO 20 KT. CHANCE OF SNOW. WAVES 7 TO 10 FT OCCASIONALLY TO
13 FT SUBSIDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
THURSDAY
WEST WINDS 10 TO 20 KT BECOMING NORTHWEST. WAVES 3 TO
5 FT.
FRIDAY
WEST WINDS 10 TO 20 KT. WAVES 3 TO 5 FT BUILDING TO
4 TO 6 FT OCCASIONALLY TO 8 FT.
LMZ761-202215-
MAFOR 2017/
MICHIGAN NORTH 15632 11632 11622. A CHANCE OF SNOW. WAVES 3 TO 6
FEET.
MICHIGAN SOUTH 11637 14642 13632. WAVES 5 TO 8 FEET THIS
AFTERNOON AND TONIGHT. WAVES 3 TO 6 FEET TUESDAY MORNING.
WOOD
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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