482  
FZUS53 KDTX 301939  
NSHDTX  
 
NEARSHORE MARINE FORECAST FOR MICHIGAN  
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI  
339 PM EDT FRI MAY 30 2025  
 
FOR WATERS WITHIN FIVE NAUTICAL MILES OF SHORE  
 
WAVES ARE THE SIGNIFICANT WAVE HEIGHT - THE AVERAGE OF THE HIGHEST  
1/3 OF THE WAVE SPECTRUM. OCCASIONAL WAVE HEIGHT IS THE AVERAGE OF  
THE HIGHEST 1/10 OF THE WAVE SPECTRUM.  
 
LHZ422-310345-  
INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI-  
339 PM EDT FRI MAY 30 2025  
 
...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT EDT TONIGHT  
THROUGH SATURDAY AFTERNOON...  
   
TONIGHT
 
NORTHWEST WINDS 10 TO 15 KNOTS BECOMING NORTH 15 TO  
20 KNOTS AFTER MIDNIGHT. PARTLY CLOUDY. SCATTERED SHOWERS AND  
THUNDERSTORMS IN THE EVENING. WAVES 1 TO 3 FEET BUILDING TO 2 TO  
4 FEET AFTER MIDNIGHT.    
SATURDAY
 
NORTH WINDS 15 TO 20 KNOTS DIMINISHING TO 10 TO  
15 KNOTS IN THE LATE MORNING AND AFTERNOON. PARTLY CLOUDY. WAVES  
2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET IN THE LATE MORNING AND  
AFTERNOON.    
SATURDAY NIGHT
 
NORTHWEST WINDS 10 TO 15 KNOTS. CLEAR. WAVES  
1 TO 3 FEET.    
SUNDAY
 
NORTHWEST WINDS 10 TO 15 KNOTS. SUNNY. WAVES 2 FEET OR  
LESS.  
 
SEE LAKE HURON OPEN LAKE FORECAST FOR DAYS 3 THROUGH 5.  
 

 
 
LHZ421-310345-  
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER  
SAGINAW BAY-  
339 PM EDT FRI MAY 30 2025  
 
...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT EDT TONIGHT  
THROUGH SATURDAY AFTERNOON...  
   
TONIGHT
 
NORTHWEST WINDS 10 TO 15 KNOTS BECOMING NORTH 15 TO  
20 KNOTS AFTER MIDNIGHT. PARTLY CLOUDY. SCATTERED SHOWERS AND  
THUNDERSTORMS IN THE EVENING. WAVES 2 FEET OR LESS BUILDING TO  
3 TO 5 FEET AFTER MIDNIGHT. WAVES OCCASIONALLY AROUND 7 FEET.    
SATURDAY
 
NORTH WINDS 15 TO 20 KNOTS BECOMING NORTHEAST 10 TO  
15 KNOTS EARLY IN THE AFTERNOON. PARTLY CLOUDY. WAVES 3 TO  
5 FEET. WAVES OCCASIONALLY AROUND 7 FEET.    
SATURDAY NIGHT
 
NORTHWEST WINDS 10 TO 15 KNOTS. MOSTLY CLEAR.  
WAVES 1 TO 3 FEET.    
SUNDAY
 
NORTHWEST WINDS 10 TO 15 KNOTS. SUNNY. WAVES 1 TO  
3 FEET.  
 
SEE LAKE HURON OPEN LAKE FORECAST FOR DAYS 3 THROUGH 5.  
 

 
 
LHZ441-310345-  
PORT AUSTIN TO HARBOR BEACH MI-  
339 PM EDT FRI MAY 30 2025  
 
...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT EDT TONIGHT  
THROUGH SATURDAY AFTERNOON...  
   
TONIGHT
 
WEST WINDS 5 TO 10 KNOTS BECOMING NORTHWEST 10 TO  
15 KNOTS THIS EVENING, THEN BECOMING NORTH 15 TO 20 KNOTS AFTER  
MIDNIGHT. MOSTLY CLOUDY. SCATTERED SHOWERS AND THUNDERSTORMS IN  
THE EVENING. WAVES 2 FEET OR LESS BUILDING TO 2 TO 4 FEET AFTER  
MIDNIGHT.    
SATURDAY
 
NORTH WINDS 15 TO 20 KNOTS DIMINISHING TO 10 TO  
15 KNOTS EARLY IN THE AFTERNOON. PARTLY CLOUDY. WAVES 3 TO  
5 FEET. WAVES OCCASIONALLY AROUND 7 FEET.    
SATURDAY NIGHT
 
NORTHWEST WINDS 10 TO 15 KNOTS. MOSTLY CLEAR.  
WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET IN THE LATE EVENING  
AND OVERNIGHT.    
SUNDAY
 
NORTHWEST WINDS 10 TO 15 KNOTS BECOMING NORTH 5 TO  
10 KNOTS EARLY IN THE AFTERNOON. SUNNY. WAVES 1 TO 3 FEET.  
 
SEE LAKE HURON OPEN LAKE FORECAST FOR DAYS 3 THROUGH 5.  
 

 
 
LHZ442-310345-  
HARBOR BEACH TO PORT SANILAC MI-  
339 PM EDT FRI MAY 30 2025  
 
...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT EDT TONIGHT  
THROUGH SATURDAY AFTERNOON...  
   
TONIGHT
 
NORTHWEST WINDS 5 TO 10 KNOTS BECOMING NORTH 15 TO  
20 KNOTS. MOSTLY CLOUDY. SCATTERED SHOWERS AND THUNDERSTORMS IN  
THE EVENING. WAVES 2 FEET OR LESS BUILDING TO 3 TO 5 FEET EARLY  
IN THE MORNING. WAVES OCCASIONALLY AROUND 7 FEET.    
SATURDAY
 
NORTH WINDS 15 TO 20 KNOTS. PARTLY CLOUDY. WAVES 3 TO  
5 FEET. WAVES OCCASIONALLY AROUND 6 FEET.    
SATURDAY NIGHT
 
NORTHWEST WINDS 10 TO 15 KNOTS. MOSTLY CLEAR.  
WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET IN THE LATE EVENING  
AND OVERNIGHT.    
SUNDAY
 
NORTHWEST WINDS 10 TO 15 KNOTS. SUNNY. WAVES 1 TO  
3 FEET.  
 
SEE LAKE HURON OPEN LAKE FORECAST FOR DAYS 3 THROUGH 5.  
 

 
 
LHZ443-310345-  
PORT SANILAC TO PORT HURON MI-  
339 PM EDT FRI MAY 30 2025  
 
...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT EDT TONIGHT  
THROUGH SATURDAY AFTERNOON...  
   
TONIGHT
 
NORTHWEST WINDS 10 TO 15 KNOTS DIMINISHING TO 5 TO  
10 KNOTS THIS EVENING, THEN BECOMING NORTH 15 TO 20 KNOTS AFTER  
MIDNIGHT. MOSTLY CLOUDY. SCATTERED SHOWERS AND THUNDERSTORMS IN  
THE EVENING, THEN ISOLATED SHOWERS AFTER MIDNIGHT. WAVES 2 FEET  
OR LESS BUILDING TO 3 TO 5 FEET EARLY IN THE MORNING. WAVES  
OCCASIONALLY AROUND 7 FEET.    
SATURDAY
 
NORTH WINDS 15 TO 20 KNOTS. MOSTLY CLOUDY IN THE  
MORNING BECOMING PARTLY CLOUDY. WAVES 4 TO 6 FEET. WAVES  
OCCASIONALLY AROUND 8 FEET.    
SATURDAY NIGHT
 
NORTHWEST WINDS 10 TO 15 KNOTS. MOSTLY CLEAR.  
WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET IN THE LATE EVENING  
AND OVERNIGHT.    
SUNDAY
 
NORTHWEST WINDS 10 TO 15 KNOTS. MOSTLY SUNNY. WAVES  
2 FEET OR LESS.  
 
SEE LAKE HURON OPEN LAKE FORECAST FOR DAYS 3 THROUGH 5.  
 

 
 
LEZ444-310345-  
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-  
339 PM EDT FRI MAY 30 2025  
   
TONIGHT
 
NORTHWEST WINDS 10 TO 15 KNOTS. MOSTLY CLOUDY WITH  
SCATTERED SHOWERS AND THUNDERSTORMS IN THE EVENING, THEN PARTLY  
CLOUDY WITH ISOLATED SHOWERS AFTER MIDNIGHT. WAVES 2 FEET OR  
LESS.    
SATURDAY
 
NORTHWEST WINDS 10 TO 15 KNOTS. MOSTLY CLOUDY IN THE  
MORNING BECOMING PARTLY CLOUDY. WAVES 2 FEET OR LESS.    
SATURDAY NIGHT
 
NORTHWEST WINDS 10 TO 15 KNOTS DIMINISHING TO  
5 TO 10 KNOTS IN THE LATE EVENING AND OVERNIGHT. MOSTLY CLEAR.  
WAVES 2 FEET OR LESS.    
SUNDAY
 
NORTHWEST WINDS 5 TO 10 KNOTS INCREASING TO 10 TO  
15 KNOTS IN THE LATE MORNING AND AFTERNOON. SUNNY. WAVES 2 FEET  
OR LESS.  
 
SEE LAKE ERIE OPEN LAKE FORECAST FOR DAYS 3 THROUGH 5.  
 
THE WATER TEMPERATURE AT BELLE ISLE IS 58 DEGREES.  
 

 
 
AM  
 
YOU CAN OBTAIN YOUR LATEST NATIONAL WEATHER SERVICE FORECASTS ONLINE  
A WWW.WEATHER.GOV/GREATLAKES  
 
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