196
FZUS63 KMKX 211705
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1105 AM CST TUE JAN 21 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 30.8 INCHES OVER THE SOUTHERN GREAT PLAINS
WILL MOVE EAST ACROSS THE OHIO RIVER VALLEY THROUGH TONIGHT.
THIS WILL MAINTAIN BREEZY WEST WINDS ACROSS LAKE MICHIGAN THROUGH
TODAY, AND SHIFT TO SOUTHWEST OVERNIGHT INTO WEDNESDAY. BRISK
WEST WINDS WILL COMBINE WITH ELEVATED WAVE HEIGHTS AND FRIGID AIR
TEMPERATURES TO SUPPORT HEAVY FREEZING SPRAY. HEAVY FREEZING
SPRAY WARNINGS ARE IN EFFECT THROUGH THIS MORNING IN THE NORTHERN
THIRD, AND INTO THIS EVENING FOR THE SOUTHERN TWO THIRDS.
LOW PRESSURE AROUND 29.8 INCHES WILL ACROSS THE NORTHERN GREAT
LAKES WEDNESDAY INTO WEDNESDAY NIGHT WITH A COLD FRONT TO FOLLOW.
THE BREEZY SOUTHWEST WINDS LATE TONIGHT INTO EARLY WEDNESDAY
AFTERNOON ARE NOW EXPECTED TO REACH GALE FORCE FOR THE SOUTH
HALF, SLIGHTLY MORE UNCERTAIN FOR THE NORTH HALF BUT GIVEN THE
CONSISTENCY IN MODELS WE HAVE ISSED A GALE WARNING ACROSS THE
ENTIRE LAKE. THE WINDS WILL THEN SHIFT TO NORTHWESTERLY FOR
WEDNESDAY NIGHT AND THURSDAY, BUT NOT AS WINDY.
LMZ261-362-364-366-563-565-220000-
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-
1105 AM CST TUE JAN 21 2025
TWO RIVERS WI TO MANISTEE MI NORTH...
...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY
AFTERNOON...
REST OF TODAY
WEST WINDS 10 TO 20 KT INCREASING TO 15 TO
25 KT. CHANCE OF SNOW. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
TONIGHT
WEST WINDS TO 30 KT BECOMING SOUTHWEST. CHANCE OF
LIGHT FREEZING RAIN AND SLIGHT CHANCE OF SNOW IN THE EVENING,
THEN CHANCE OF SNOW AND SLIGHT CHANCE OF LIGHT FREEZING RAIN
OVERNIGHT. FREEZING SPRAY OVERNIGHT. WAVES 4 TO 6 FT OCCASIONALLY
TO 8 FT BUILDING TO 8 TO 11 FT OCCASIONALLY TO 14 FT.
WEDNESDAY
SOUTHWEST WINDS TO 30 KT. FREEZING SPRAY. SNOW IN
THE MORNING, THEN CHANCE OF SNOW IN THE AFTERNOON. WAVES 10 TO
14 FT OCCASIONALLY TO 18 FT SUBSIDING TO 7 TO 10 FT OCCASIONALLY
TO 13 FT.
WEDNESDAY NIGHT
WEST WINDS 15 TO 25 KT BECOMING NORTHWEST
10 TO 20 KT. CHANCE OF FLURRIES. 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 3 TO 5 FT.
THURSDAY NIGHT
NORTHWEST WINDS 10 TO 20 KT BECOMING WEST.
WAVES 2 TO 4 FT.
FRIDAY
WEST WINDS 10 TO 20 KT BECOMING SOUTHWEST 15 TO 25 KT.
WAVES 1 TO 3 FT BUILDING TO 3 TO 5 FT.
SATURDAY
SOUTHWEST WINDS TO 30 KT BECOMING WEST. WAVES 4 TO
7 FT OCCASIONALLY TO 9 FT.
LMZ567-868-220000-
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-
1105 AM CST TUE JAN 21 2025
TWO RIVERS WI TO MANISTEE MI SOUTH TO SHEBOYGAN WI TO PENTWATER
MI...
...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 6 PM CST THIS
EVENING...
...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY
AFTERNOON...
REST OF TODAY
WEST WINDS 10 TO 20 KT. HEAVY FREEZING SPRAY
LATE THIS MORNING. CHANCE OF SNOW. WAVES 4 TO 6 FT OCCASIONALLY
TO 8 FT.
TONIGHT
SOUTHWEST WINDS 10 TO 20 KT INCREASING TO 30 KT.
FREEZING SPRAY. SLIGHT CHANCE OF SNOW IN THE EVENING, THEN CHANCE
OF SNOW OVERNIGHT. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT BUILDING
TO 8 TO 11 FT OCCASIONALLY TO 14 FT.
WEDNESDAY
SOUTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT.
FREEZING SPRAY. SNOW IN THE MORNING, THEN CHANCE OF SNOW IN THE
AFTERNOON. WAVES 10 TO 14 FT OCCASIONALLY TO 18 FT SUBSIDING TO
8 TO 11 FT OCCASIONALLY TO 14 FT.
WEDNESDAY NIGHT
WEST WINDS 15 TO 25 KT BECOMING NORTHWEST
10 TO 20 KT. CHANCE OF SNOW IN THE EVENING, THEN CHANCE OF
FLURRIES OVERNIGHT. WAVES 6 TO 9 FT OCCASIONALLY TO 12 FT
SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
THURSDAY
NORTHWEST WINDS 10 TO 20 KT. WAVES 3 TO 5 FT.
THURSDAY NIGHT
NORTHWEST WINDS 10 TO 15 KT. WAVES 2 TO 4 FT
SUBSIDING TO 1 TO 3 FT.
FRIDAY
WEST WINDS 10 TO 20 KT BECOMING SOUTHWEST. WAVES 1 TO
3 FT BUILDING TO 3 TO 5 FT.
SATURDAY
SOUTHWEST WINDS 15 TO 25 KT BECOMING WEST. WAVES 4 TO
7 FT OCCASIONALLY TO 9 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-220000-
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-
1105 AM CST TUE JAN 21 2025
SHEBOYGAN WI TO PENTWATER MI SOUTH...
...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 6 PM CST THIS
EVENING...
...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY
AFTERNOON...
REST OF TODAY
WEST WINDS 10 TO 20 KT. HEAVY FREEZING SPRAY.
CHANCE OF SNOW. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
TONIGHT
SOUTHWEST WINDS 10 TO 20 KT BECOMING SOUTH GALES TO
35 KT. HEAVY FREEZING SPRAY. CHANCE OF LIGHT FREEZING RAIN IN THE
EVENING, THEN SLIGHT CHANCE OF LIGHT FREEZING RAIN OVERNIGHT.
WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT BUILDING TO 8 TO 11 FT
OCCASIONALLY TO 14 FT.
WEDNESDAY
SOUTHWEST GALES TO 35 KT DIMINISHING TO 30 KT.
FREEZING SPRAY. CHANCE OF SNOW. WAVES 10 TO 14 FT OCCASIONALLY TO
18 FT SUBSIDING TO 8 TO 11 FT OCCASIONALLY TO 14 FT.
WEDNESDAY NIGHT
SOUTHWEST WINDS TO 30 KT BECOMING WEST 10 TO
20 KT OVERNIGHT. CHANCE OF SNOW. WAVES 7 TO 10 FT OCCASIONALLY TO
13 FT SUBSIDING TO 5 TO 8 FT OCCASIONALLY TO 10 FT.
THURSDAY
NORTHWEST WINDS 10 TO 20 KT. CHANCE OF SNOW. WAVES
4 TO 6 FT OCCASIONALLY TO 8 FT.
THURSDAY NIGHT
NORTHWEST WINDS 10 TO 15 KT. WAVES 3 TO 5 FT
SUBSIDING TO 2 TO 4 FT.
FRIDAY
WEST WINDS 10 TO 20 KT BECOMING SOUTHWEST. WAVES 2 TO
4 FT BUILDING TO 3 TO 5 FT.
SATURDAY
SOUTHWEST WINDS 15 TO 25 KT BECOMING WEST. WAVES 6 TO
9 FT OCCASIONALLY TO 12 FT.
LMZ761-220000-
MAFOR 2117/
MICHIGAN NORTH...GALE WARNING IN EFFECT...13630 13540 11547
11557. A CHANCE OF LIGHT FREEZING RAIN THIS EVENING. WAVES 3 TO 5
FEET THIS AFTERNOON. WAVES 3 TO 6 FEET BUILDING TO 7 TO 10 FEET
TONIGHT. WAVES 9 TO 12 FEET WEDNESDAY MORNING.
MICHIGAN SOUTH...GALE WARNING IN EFFECT...12622 11520 11530 11542
11552 11452 11557. A CHANCE OF LIGHT FREEZING RAIN THIS EVENING.
WAVES 3 TO 6 FEET THIS AFTERNOON. WAVES 3 TO 6 FEET BUILDING TO 7
TO 10 FEET TONIGHT. WAVES 9 TO 12 FEET WEDNESDAY MORNING.
KUROSKI
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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