179  
WHUS73 KIWX 201206  
MWWIWX  
 
URGENT - MARINE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE NORTHERN INDIANA  
806 AM EDT MON OCT 20 2025  
 
LMZ043-046-202245-  
/O.EXP.KIWX.SC.Y.0061.000000T0000Z-251020T1200Z/  
/O.NEW.KIWX.SC.Y.0062.251020T2100Z-251021T2000Z/  
NEW BUFFALO MI TO ST JOSEPH MI-MICHIGAN CITY IN TO NEW BUFFALO MI-  
806 AM EDT MON OCT 20 2025  
 
...SMALL CRAFT ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO  
4 PM EDT TUESDAY...  
 
* WHAT...SOUTHWEST WINDS 15 TO 25 KNOTS WITH GUSTS UP TO 30 KNOTS,  
BECOMING WESTERLY ON TUESDAY. A FEW GUSTS UP TO 35 KNOT GALES  
POSSIBLE. WAVES BUILDING TO 4 TO 9 FEET ON TUESDAY.  
 
* WHERE...MICHIGAN CITY IN TO ST JOSEPH MI.  
 
* WHEN...FROM 5 PM THIS AFTERNOON TO 4 PM EDT TUESDAY.  
 
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER  
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.  
 

 
 

 
 
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