000  
WHUS73 KMKX 210126  
MWWMKX  
 
URGENT - MARINE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI  
826 PM CDT WED OCT 20 2021  
 
LMZ261-362-364-366-563-565-567-868-210930-  
/O.NEW.KMKX.GL.W.0021.211021T0900Z-211021T2100Z/  
LAKE MICHIGAN FROM SEUL CHOIX POINT TO ROCK ISLAND PASSAGE 5NM  
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 5NM OFFSHORE-  
LAKE MICHIGAN FROM CHARLEVOIX TO POINT BETSIE MI 5NM OFFSHORE TO  
MID LAKE-  
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5NM OFFSHORE TO  
MID LAKE-  
LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI 5NM  
OFFSHORE TO MID LAKE-  
LAKE MICHIGAN FROM STURGEON BAY TO TWO RIVERS WI 5NM OFFSHORE TO  
MID LAKE-  
LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 5NM OFFSHORE TO MID  
LAKE-  
LAKE MICHIGAN FROM PENTWATER TO MANISTEE MI 5NM OFFSHORE TO MID  
LAKE-  
826 PM CDT WED OCT 20 2021  
   
..GALE WARNING IN EFFECT FROM 4 AM TO 4 PM CDT THURSDAY
 
 
* WHAT...NORTH TO NORTHEAST WINDS 15 TO 25 KT WITH GUSTS UP TO 35  
KT AND WAVES BUILDING TO 6 TO 9 FT ARE EXPECTED.  
 
* WHERE...NORTHERN OPEN WATERS OF LAKE MICHIGAN.  
 
* WHEN...FROM 4 AM TO 4 PM CDT THURSDAY.  
 
* IMPACTS...STRONG WINDS WILL CAUSE HAZARDOUS WAVES WHICH COULD  
CAPSIZE OR DAMAGE VESSELS AND REDUCE VISIBILITY.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
MARINERS SHOULD ALTER PLANS TO AVOID THESE HAZARDOUS CONDITIONS.  
REMAIN IN PORT, SEEK SAFE HARBOR, ALTER COURSE, AND/OR SECURE THE  
VESSEL FOR SEVERE CONDITIONS.  
 

 
 

 
 
LMZ080-669-671-673-675-777-779-870-872-874-876-878-210930-  
/O.NEW.KMKX.GL.W.0021.211021T1500Z-211022T0000Z/  
LAKE MICHIGAN MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM OFFSHORE TO  
MID-LINE OF LAKE.-  
LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5NM OFFSHORE  
TO MID LAKE-  
LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5NM  
OFFSHORE TO MID LAKE-  
LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5NM  
OFFSHORE TO MID LAKE-  
LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5NM  
OFFSHORE TO MID LAKE-  
LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5NM  
OFFSHORE TO MID LAKE-  
LAKE MICHIGAN FROM WILMETTE HARBOR TO MICHIGAN CITY IN 5NM  
OFFSHORE TO MID LAKE-  
LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5NM OFFSHORE TO MID  
LAKE-  
LAKE MICHIGAN FROM GRAND HAVEN TO WHITEHALL MI 5NM OFFSHORE TO  
MID LAKE-  
LAKE MICHIGAN FROM HOLLAND TO GRAND HAVEN MI 5NM OFFSHORE TO MID  
LAKE-  
LAKE MICHIGAN FROM SOUTH HAVEN TO HOLLAND MI 5NM OFFSHORE TO MID  
LAKE-  
LAKE MICHIGAN FROM ST JOSEPH TO SOUTH HAVEN MI 5NM OFFSHORE TO  
MID LAKE-  
826 PM CDT WED OCT 20 2021  
   
..GALE WARNING IN EFFECT FROM 10 AM TO 7 PM CDT THURSDAY
 
 
* WHAT...NORTH TO NORTHWEST WINDS 15 TO 25 KT WITH GUSTS UP TO 35  
KT AND WAVES BUILDING TO 7 TO 10 FT ARE EXPECTED.  
 
* WHERE...SOUTHERN OPEN WATERS OF LAKE MICHIGAN.  
 
* WHEN...FROM 10 AM TO 7 PM CDT THURSDAY.  
 
* IMPACTS...STRONG WINDS WILL CAUSE HAZARDOUS WAVES WHICH COULD  
CAPSIZE OR DAMAGE VESSELS AND REDUCE VISIBILITY.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
MARINERS SHOULD ALTER PLANS TO AVOID THESE HAZARDOUS CONDITIONS.  
REMAIN IN PORT, SEEK SAFE HARBOR, ALTER COURSE, AND/OR SECURE THE  
VESSEL FOR SEVERE CONDITIONS.  
 

 
 

 
 
LMZ643-644-210930-  
/O.CON.KMKX.SC.Y.0084.211021T1200Z-211022T0500Z/  
SHEBOYGAN TO PORT WASHINGTON WI-  
PORT WASHINGTON TO NORTH POINT LIGHT WI-  
826 PM CDT WED OCT 20 2021  
 
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 AM THURSDAY TO  
MIDNIGHT CDT THURSDAY NIGHT...  
 
* WHAT...NORTHWEST TO NORTH WINDS 10 TO 20 KT WITH GUSTS UP TO 30  
KT AND WAVES 3 TO 6 FT EXPECTED.  
 
* WHERE...NEARSHORE WATERS FROM SHEBOYGAN TO NORTH POINT  
LIGHTHOUSE.  
 
* WHEN...FROM 7 AM THURSDAY TO MIDNIGHT CDT THURSDAY NIGHT.  
 
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER  
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.  
 

 
 

 
 
LMZ645-646-210930-  
/O.CON.KMKX.SC.Y.0084.211021T1200Z-211022T0900Z/  
NORTH POINT LIGHT TO WIND POINT WI-  
WIND POINT WI TO WINTHROP HARBOR IL-  
826 PM CDT WED OCT 20 2021  
 
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 AM THURSDAY TO  
4 AM CDT FRIDAY...  
 
* WHAT...NORTHWEST WINDS 10 TO 20 KT WITH GUSTS UP TO 25 KT AND  
WAVES 4 TO 7 FT EXPECTED.  
 
* WHERE...NEARSHORE WATERS FROM NORTH POINT LIGHTHOUSE TO  
WINTHROP HARBOR IL.  
 
* WHEN...FROM 7 AM THURSDAY TO 4 AM CDT FRIDAY.  
 
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER  
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.  
 

 
 

 
MBK  
 
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