052  
FZUS63 KMKX 010941 CCA  
GLFLM  
 
OPEN LAKE FORECAST FOR LAKE MICHIGAN...CORRECTED  
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI  
441 AM CDT TUE APR 1 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  
 
HIGH PRESSURE OF 30.3 INCHES OVERHEAD EARLY THIS MORNING WILL PUSH  
EASTWARD TODAY INTO TONIGHT IN ADVANCE OF AN APPROACHING LOW. THE  
LOW OF 29.1 INCHES WILL LIFT NORTHEAST FROM THE CENTRAL PLAINS LATE  
TONIGHT TO LAKE SUPERIOR WEDNESDAY NIGHT. STRONG SOUTHEAST WINDS  
WILL DEVELOP TONIGHT AHEAD OF THE LOW, WITH GALES EXPECTED INTO  
WEDNESDAY. THE WINDS WILL BECOME SOUTH TO SOUTHWEST LATER WEDNESDAY  
INTO WEDNESDAY NIGHT AND REMAIN GUSTY, THOUGH BELOW GALE FORCE.  
WINDS WILL BECOME LIGHTER BY FRIDAY MORNING, AS HIGH PRESSURE OF  
30.4 INCHES BUILDS INTO THE NORTHERN GREAT LAKES.  
 
LMZ261-362-364-563-011515-  
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 ROCK ISLAND PASSAGE TO STURGEON BAY WI-  
311 AM CDT TUE APR 1 2025  
 
STURGEON BAY WI TO POINT BETSIE MI NORTH...  
 
...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY  
AFTERNOON...  
   
TODAY  
SOUTHEAST WINDS 5 TO 10 KT BECOMING EAST 10 TO 20 KT.  
WAVES 1 TO 2 FT.    
TONIGHT  
EAST WINDS 10 TO 20 KT BECOMING SOUTHEAST GALES TO  
35 KT. CHANCE OF SNOW SHOWERS OVERNIGHT. WAVES 1 TO 3 FT BUILDING  
TO 5 TO 8 FT OCCASIONALLY TO 10 FT.    
WEDNESDAY  
SOUTHEAST GALES TO 40 KT DIMINISHING TO GALES TO  
35 KT. SNOW AND RAIN SHOWERS IN THE MORNING, THEN RAIN SHOWERS IN  
THE AFTERNOON. WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT.    
WEDNESDAY NIGHT  
SOUTH WINDS TO 30 KT BECOMING SOUTHWEST.  
CHANCE OF RAIN SHOWERS IN THE EVENING. WAVES 4 TO 7 FT  
OCCASIONALLY TO 9 FT.    
THURSDAY  
SOUTHWEST WINDS TO 30 KT BECOMING WEST. WAVES 4 TO  
7 FT OCCASIONALLY TO 9 FT.    
THURSDAY NIGHT  
NORTHWEST WINDS 10 TO 20 KT BECOMING NORTH  
10 TO 15 KT. WAVES 2 TO 4 FT SUBSIDING TO 1 TO 2 FT.    
FRIDAY  
NORTH WINDS 5 TO 10 KT BECOMING NORTHEAST. WAVES 1 FT  
OR LESS.    
SATURDAY  
NORTHEAST WINDS 10 TO 15 KT BECOMING NORTH 10 TO  
20 KT. WAVES 1 TO 3 FT.  
 
 
 
LMZ366-565-567-868-011515-  
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO  
MID LAKE-  
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-  
311 AM CDT TUE APR 1 2025  
 
STURGEON BAY WI TO POINT BETSIE MI SOUTH TO SHEBOYGAN WI TO  
PENTWATER MI...  
 
...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY  
AFTERNOON...  
   
TODAY  
EAST WINDS 5 TO 10 KT INCREASING TO 10 TO 15 KT. WAVES  
1 TO 3 FT.    
TONIGHT  
EAST WINDS 10 TO 20 KT BECOMING SOUTHEAST GALES TO  
40 KT. CHANCE OF RAIN AND SNOW IN THE EVENING, THEN SNOW AND RAIN  
SHOWERS OVERNIGHT. WAVES 1 TO 3 FT BUILDING TO 8 TO 11 FT  
OCCASIONALLY TO 14 FT.    
WEDNESDAY  
SOUTHEAST GALES TO 40 KT DIMINISHING TO 30 KT. RAIN  
SHOWERS. WAVES 8 TO 12 FT OCCASIONALLY TO 16 FT SUBSIDING TO 8 TO  
11 FT OCCASIONALLY TO 14 FT.    
WEDNESDAY NIGHT  
SOUTH WINDS TO 30 KT BECOMING SOUTHWEST 15 TO  
25 KT. WAVES 6 TO 9 FT OCCASIONALLY TO 12 FT SUBSIDING TO 4 TO  
7 FT OCCASIONALLY TO 9 FT.    
THURSDAY  
WEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT.  
WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.    
THURSDAY NIGHT  
NORTHWEST WINDS 5 TO 10 KT BECOMING NORTH.  
WAVES 2 TO 4 FT SUBSIDING TO 1 TO 2 FT.    
FRIDAY  
NORTHEAST WINDS 5 TO 10 KT INCREASING TO 10 TO 15 KT.  
WAVES 1 TO 2 FT.    
SATURDAY  
NORTHEAST WINDS 10 TO 20 KT BECOMING NORTH. WAVES  
2 TO 4 FT.  
 
 
 
LMZ080-669-671-673-675-777-779-870-872-874-876-878-011515-  
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-  
311 AM CDT TUE APR 1 2025  
 
SHEBOYGAN WI TO PENTWATER MI SOUTH...  
 
...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY  
AFTERNOON...  
   
TODAY  
EAST WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT. WAVES  
2 TO 4 FT.    
TONIGHT  
EAST WINDS 10 TO 20 KT BECOMING SOUTHEAST GALES TO  
40 KT. CHANCE OF RAIN AND SNOW IN THE EVENING, THEN RAIN SHOWERS  
WITH SNOW SHOWERS LIKELY OVERNIGHT. WAVES 2 TO 4 FT BUILDING TO  
8 TO 12 FT OCCASIONALLY TO 16 FT.    
WEDNESDAY  
SOUTHEAST GALES TO 45 KT DIMINISHING TO GALES TO  
40 KT LATE IN THE MORNING, THEN DIMINISHING TO GALES TO 35 KT  
EARLY IN THE AFTERNOON BECOMING SOUTH TO 30 KT LATE. RAIN SHOWERS  
IN THE MORNING, THEN RAIN SHOWERS WITH A CHANCE OF THUNDERSTORMS  
IN THE AFTERNOON. WAVES 10 TO 14 FT OCCASIONALLY TO 18 FT  
SUBSIDING TO 7 TO 10 FT OCCASIONALLY TO 13 FT.    
WEDNESDAY NIGHT  
SOUTHWEST WINDS TO 30 KT DIMINISHING TO 10 TO  
20 KT OVERNIGHT. CHANCE OF RAIN SHOWERS IN THE EVENING. WAVES  
6 TO 9 FT OCCASIONALLY TO 12 FT SUBSIDING TO 4 TO 7 FT  
OCCASIONALLY TO 9 FT.    
THURSDAY  
WEST WINDS 10 TO 20 KT. WAVES 4 TO 6 FT OCCASIONALLY  
TO 8 FT.    
THURSDAY NIGHT  
NORTH WINDS 5 TO 10 KT BECOMING NORTHEAST 10 TO  
15 KT. WAVES 1 TO 3 FT.    
FRIDAY  
NORTHEAST WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.  
WAVES 1 TO 3 FT.    
SATURDAY  
NORTHEAST WINDS 10 TO 20 KT BECOMING NORTH. CHANCE OF  
RAIN. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.  
 
 
 
LMZ761-011515-  
MAFOR 0110/  
MICHIGAN NORTH...GALE WARNING IN EFFECT...11200 12310 11210 11220  
11330 12357. A CHANCE OF RAIN AND SNOW THIS EVENING. WAVES 1 TO 3  
FEET TODAY. WAVES 1 TO 3 FEET BUILDING TO 6 TO 9 FEET TONIGHT.  
 
MICHIGAN SOUTH...GALE WARNING IN EFFECT...13210 12220 11230 11350  
11357. A CHANCE OF RAIN AND SNOW THIS EVENING. WAVES 1 TO 3 FEET  
TODAY. WAVES 1 TO 3 FEET BUILDING TO 8 TO 11 FEET TONIGHT.  
 
 
 
DDV  
 
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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