532
FZUS63 KMKX 210312
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
912 PM 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 30.9 INCHES IN THE CENTRAL PLAINS WILL
SHIFT INTO THE MIDDLE MISSISSIPPI RIVER VALLEY BY TUESDAY,
SHIFTING FURTHER EAST INTO THE MIDDLE OF THE WEEK. THIS WILL
MAINTAIN BREEZY WEST NORTHWEST WINDS ACROSS LAKE MICHIGAN THROUGH
TODAY, AND SHIFT TO SOUTHWEST OVERNIGHT INTO WEDNESDAY. BRISK
WEST NORTHWEST WINDS WILL COMBINE WITH ELEVATED WAVE HEIGHTS AND
FRIGID AIR TEMPERATURES TO SUPPORT HEAVY FREEZING SPRAY. HEAVY
FREEZING SPRAY WARNINGS ARE IN EFFECT THROUGH TUESDAY MORNING IN
THE NORTHERN THIRD, AND THROUGH TUESDAY EVENING FOR THE SOUTHERN
TWO THIRDS.
LOW PRESSURE AROUND 29.8 INCHES WILL MOVE SOUTHEAST INTO THE
WESTERN GREAT LAKES REGION TUESDAY NIGHT INTO WEDNESDAY, SHIFTING
WINDS TO SOUTHWESTERLY AND INCREASING WINDS INTO WEDNESDAY. THIS
WILL SUPPORT CONTINUED FREEZING SPRAY POTENTIAL INTO WEDNESDAY,
BUT FREEZING SPRAY IS EXPECTED TO BE MODERATE WITH ONLY PATCHY
HEAVY SPRAY DEVELOPING.
LMZ261-362-364-366-563-565-211015-
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-
912 PM CST MON JAN 20 2025
TWO RIVERS WI TO MANISTEE MI NORTH...
...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 6 AM CST
TUESDAY...
REST OF TONIGHT
WEST WINDS TO 30 KT DIMINISHING TO 15 TO
25 KT. HEAVY FREEZING SPRAY. CHANCE OF SNOW SHOWERS. WAVES 4 TO
7 FT OCCASIONALLY TO 9 FT.
TUESDAY
WEST WINDS 15 TO 25 KT. CHANCE OF SNOW SHOWERS. WAVES
4 TO 6 FT OCCASIONALLY TO 8 FT.
TUESDAY NIGHT
WEST WINDS 15 TO 25 KT BECOMING SOUTHWEST TO
30 KT. FREEZING SPRAY OVERNIGHT. SCATTERED SNOW SHOWERS
OVERNIGHT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT BUILDING TO 6 TO
9 FT OCCASIONALLY TO 12 FT.
WEDNESDAY
SOUTHWEST GALES TO 35 KT DIMINISHING TO 30 KT.
FREEZING SPRAY. SNOW SHOWERS LIKELY. WAVES 8 TO 12 FT
OCCASIONALLY TO 16 FT.
WEDNESDAY NIGHT
WEST WINDS 15 TO 25 KT BECOMING NORTHWEST
10 TO 20 KT. CHANCE OF SNOW SHOWERS IN THE EVENING. 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 2 TO 4 FT.
THURSDAY NIGHT
NORTHWEST WINDS 10 TO 20 KT BECOMING WEST 10 TO
15 KT. WAVES 1 TO 3 FT.
FRIDAY
WEST WINDS 10 TO 20 KT BECOMING SOUTHWEST 15 TO 25 KT.
WAVES 2 TO 4 FT.
SATURDAY
SOUTHWEST WINDS TO 30 KT BECOMING WEST. WAVES 4 TO
6 FT OCCASIONALLY TO 8 FT.
LMZ080-567-669-671-673-675-777-779-868-870-872-874-876-878-211015-
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-
912 PM CST MON JAN 20 2025
TWO RIVERS WI TO MANISTEE MI SOUTH...
...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH TUESDAY
AFTERNOON...
REST OF TONIGHT
WEST WINDS TO 30 KT DIMINISHING TO 15 TO
25 KT. HEAVY FREEZING SPRAY. CHANCE OF SNOW SHOWERS. WAVES 6 TO
9 FT OCCASIONALLY TO 12 FT.
TUESDAY
WEST WINDS 10 TO 20 KT. HEAVY FREEZING SPRAY IN THE
MORNING. CHANCE OF SNOW SHOWERS. WAVES 4 TO 7 FT OCCASIONALLY TO
9 FT.
TUESDAY NIGHT
SOUTHWEST WINDS 10 TO 20 KT INCREASING TO 30 KT.
FREEZING SPRAY OVERNIGHT. SCATTERED SNOW SHOWERS OVERNIGHT. WAVES
4 TO 6 FT OCCASIONALLY TO 8 FT BUILDING TO 6 TO 9 FT OCCASIONALLY
TO 12 FT.
WEDNESDAY
SOUTHWEST WINDS TO 30 KT. FREEZING SPRAY. CHANCE OF
SNOW SHOWERS IN THE MORNING, THEN SNOW SHOWERS LIKELY IN THE
AFTERNOON. WAVES 10 TO 14 FT OCCASIONALLY TO 18 FT.
WEDNESDAY NIGHT
SOUTHWEST WINDS TO 30 KT BECOMING WEST 15 TO
25 KT. CHANCE OF SNOW SHOWERS IN THE EVENING. WAVES 8 TO 11 FT
OCCASIONALLY TO 14 FT SUBSIDING TO 5 TO 8 FT OCCASIONALLY TO
10 FT.
THURSDAY
NORTHWEST WINDS 10 TO 20 KT. CHANCE OF SNOW SHOWERS
IN THE AFTERNOON. WAVES 3 TO 5 FT.
THURSDAY NIGHT
NORTHWEST WINDS 10 TO 20 KT BECOMING WEST 10 TO
15 KT. WAVES 3 TO 5 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 4 TO
7 FT OCCASIONALLY TO 9 FT.
LMZ761-211015-
MAFOR 2105/
MICHIGAN NORTH 12632 14630 11630 11530. A CHANCE OF SNOW SHOWERS
OVERNIGHT AND TUESDAY. WAVES 4 TO 7 FEET SUBSIDING TO 3 TO 6 FEET
OVERNIGHT. WAVES 3 TO 6 FEET TUESDAY AND TUESDAY EVENING.
MICHIGAN SOUTH 11632 11637 11627 12622 12620 11530. WAVES 5 TO 8
FEET OVERNIGHT. WAVES 3 TO 6 FEET TUESDAY AND TUESDAY EVENING.
MH
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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