077  
FZUS53 KDTX 311348  
NSHDTX  
 
NEARSHORE MARINE FORECAST FOR MICHIGAN  
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI  
948 AM EDT MON MAR 31 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.  
 
LHZ422-312200-  
INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI-  
948 AM EDT MON MAR 31 2025  
   
REST OF TODAY  
NORTHWEST WINDS 15 TO 20 KNOTS. MOSTLY CLOUDY  
LATE IN THE MORNING BECOMING PARTLY CLOUDY. WAVES 2 TO 4 FEET  
SUBSIDING TO 1 TO 3 FEET IN THE AFTERNOON.    
TONIGHT  
NORTHWEST WINDS 15 TO 20 KNOTS INCREASING TO 20 TO  
25 KNOTS IN THE LATE EVENING AND EARLY MORNING, THEN BECOMING  
NORTH 15 TO 20 KNOTS AFTER MIDNIGHT. MOSTLY CLEAR. WAVES 2 TO  
4 FEET.    
TUESDAY  
NORTH WINDS 15 TO 20 KNOTS BECOMING NORTHEAST 10 TO  
15 KNOTS IN THE LATE MORNING AND EARLY AFTERNOON, THEN INCREASING  
TO 15 TO 20 KNOTS EARLY IN THE AFTERNOON. MOSTLY SUNNY. WAVES  
1 TO 3 FEET.    
TUESDAY NIGHT  
EAST WINDS 15 TO 20 KNOTS INCREASING TO 20 TO 25  
KNOTS WITH GUSTS TO 30 KNOTS AFTER MIDNIGHT. MOSTLY CLOUDY. A CHANCE  
OF LIGHT SNOW SHOWERS AFTER MIDNIGHT. WAVES 2 TO 4 FEET. A SMALL  
CRAFT ADVISORY MAY BE NEEDED.  
 
SEE LAKE HURON OPEN LAKE FORECAST FOR DAYS 3 THROUGH 5.  
 
 
 
LHZ421-312200-  
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER  
SAGINAW BAY-  
948 AM EDT MON MAR 31 2025  
   
..SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY AFTERNOON  
 
   
REST OF TODAY  
NORTHWEST WINDS 15 TO 20 KNOTS. MOSTLY CLOUDY  
LATE IN THE MORNING BECOMING PARTLY CLOUDY. A SLIGHT CHANCE OF  
LIGHT RAIN AND SNOW SHOWERS LATE IN THE MORNING. WAVES 4 TO  
6 FEET. WAVES OCCASIONALLY AROUND 8 FEET.    
TONIGHT  
NORTHWEST WINDS 20 TO 25 KNOTS BECOMING NORTH 15 TO  
20 KNOTS AFTER MIDNIGHT. MOSTLY CLEAR. WAVES 5 TO 7 FEET. WAVES  
OCCASIONALLY AROUND 10 FEET.    
TUESDAY  
NORTH WINDS 15 TO 20 KNOTS BECOMING NORTHEAST 10 TO  
15 KNOTS IN THE LATE MORNING AND EARLY AFTERNOON, THEN INCREASING  
TO 15 TO 20 KNOTS EARLY IN THE AFTERNOON. MOSTLY SUNNY. WAVES  
3 TO 5 FEET SUBSIDING TO 2 TO 4 FEET EARLY IN THE AFTERNOON.  
WAVES OCCASIONALLY AROUND 7 FEET.    
TUESDAY NIGHT  
EAST WINDS 15 TO 20 KNOTS INCREASING TO 20 TO  
25 KNOTS WITH GUSTS TO 30 KNOTS AFTER MIDNIGHT. PARTLY CLOUDY IN  
THE EVENING, THEN CLOUDY WITH A CHANCE OF LIGHT SNOW SHOWERS  
AFTER MIDNIGHT. WAVES 2 TO 4 FEET BUILDING TO 4 TO 6 FEET AFTER  
MIDNIGHT. WAVES OCCASIONALLY AROUND 8 FEET.  
 
SEE LAKE HURON OPEN LAKE FORECAST FOR DAYS 3 THROUGH 5.  
 
 
 
LHZ441-312200-  
PORT AUSTIN TO HARBOR BEACH MI-  
948 AM EDT MON MAR 31 2025  
   
..SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY AFTERNOON  
 
   
REST OF TODAY  
NORTHWEST WINDS 15 TO 20 KNOTS. MOSTLY CLOUDY  
WITH A SLIGHT CHANCE OF SHOWERS LATE IN THE MORNING, THEN PARTLY  
CLOUDY IN THE AFTERNOON. WAVES 5 TO 7 FEET. WAVES OCCASIONALLY  
AROUND 10 FEET.    
TONIGHT  
NORTH WINDS 20 TO 25 KNOTS. GUSTS TO 30 KNOTS IN THE  
LATE EVENING AND EARLY MORNING. PARTLY CLOUDY. WAVES 6 TO 9 FEET.  
WAVES OCCASIONALLY AROUND 12 FEET.    
TUESDAY  
NORTH WINDS 15 TO 20 KNOTS BECOMING NORTHEAST 10 TO  
15 KNOTS IN THE LATE MORNING AND AFTERNOON. PARTLY CLOUDY IN THE  
MORNING THEN CLEARING. WAVES 4 TO 6 FEET SUBSIDING TO 2 TO 4 FEET  
EARLY IN THE AFTERNOON. WAVES OCCASIONALLY AROUND 8 FEET.    
TUESDAY NIGHT  
NORTHEAST WINDS 10 TO 15 KNOTS BECOMING EAST  
20 TO 25 KNOTS. PARTLY CLOUDY IN THE EVENING BECOMING CLOUDY.  
WAVES 1 TO 3 FEET BUILDING TO 3 TO 5 FEET IN THE LATE EVENING AND  
OVERNIGHT. WAVES OCCASIONALLY AROUND 7 FEET.  
 
SEE LAKE HURON OPEN LAKE FORECAST FOR DAYS 3 THROUGH 5.  
 
 
 
LHZ442-312200-  
HARBOR BEACH TO PORT SANILAC MI-  
948 AM EDT MON MAR 31 2025  
 
...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM EDT THIS AFTERNOON  
THROUGH TUESDAY AFTERNOON...  
   
REST OF TODAY  
NORTHWEST WINDS 15 TO 20 KNOTS. MOSTLY CLOUDY. A  
SLIGHT CHANCE OF SHOWERS LATE IN THE MORNING. WAVES 4 TO 6 FEET.  
WAVES OCCASIONALLY AROUND 8 FEET.    
TONIGHT  
NORTH WINDS 15 TO 20 KNOTS. PARTLY CLOUDY. WAVES 5 TO  
7 FEET. WAVES OCCASIONALLY AROUND 10 FEET.    
TUESDAY  
NORTH WINDS 15 TO 20 KNOTS BECOMING NORTHEAST 10 TO  
15 KNOTS IN THE LATE MORNING AND AFTERNOON. PARTLY CLOUDY IN THE  
MORNING THEN CLEARING. WAVES 3 TO 5 FEET. WAVES OCCASIONALLY  
AROUND 7 FEET.    
TUESDAY NIGHT  
NORTHEAST WINDS 10 TO 15 KNOTS BECOMING EAST  
15 TO 20 KNOTS IN THE LATE EVENING AND EARLY MORNING, THEN  
INCREASING TO 20 TO 25 KNOTS WITH GUSTS TO 30 KNOTS AFTER  
MIDNIGHT. PARTLY CLOUDY IN THE EVENING BECOMING CLOUDY. WAVES  
2 TO 4 FEET BUILDING TO 4 TO 6 FEET AFTER MIDNIGHT. WAVES  
OCCASIONALLY AROUND 8 FEET.  
 
SEE LAKE HURON OPEN LAKE FORECAST FOR DAYS 3 THROUGH 5.  
 
 
 
LHZ443-312200-  
PORT SANILAC TO PORT HURON MI-  
948 AM EDT MON MAR 31 2025  
 
...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM EDT THIS AFTERNOON  
THROUGH TUESDAY AFTERNOON...  
   
REST OF TODAY  
NORTHWEST WINDS 15 TO 20 KNOTS. MOSTLY CLOUDY. A  
SLIGHT CHANCE OF SHOWERS LATE IN THE MORNING. WAVES 1 TO 3 FEET  
BUILDING TO 3 TO 5 FEET IN THE AFTERNOON. WAVES OCCASIONALLY  
AROUND 7 FEET.    
TONIGHT  
NORTH WINDS 15 TO 20 KNOTS. MOSTLY CLOUDY IN THE  
EVENING BECOMING PARTLY CLOUDY. WAVES 4 TO 6 FEET. WAVES  
OCCASIONALLY AROUND 8 FEET.    
TUESDAY  
NORTH WINDS 15 TO 20 KNOTS DIMINISHING TO 10 TO  
15 KNOTS IN THE LATE MORNING AND AFTERNOON. PARTLY CLOUDY IN THE  
MORNING THEN CLEARING. WAVES 3 TO 5 FEET. WAVES OCCASIONALLY  
AROUND 7 FEET.    
TUESDAY NIGHT  
NORTHEAST WINDS 10 TO 15 KNOTS BECOMING EAST  
15 TO 20 KNOTS IN THE LATE EVENING AND EARLY MORNING, THEN  
INCREASING TO 20 TO 25 KNOTS WITH GUSTS TO 30 KNOTS AFTER  
MIDNIGHT. PARTLY CLOUDY IN THE EVENING BECOMING CLOUDY. WAVES  
3 TO 5 FEET. WAVES OCCASIONALLY AROUND 7 FEET.  
 
SEE LAKE HURON OPEN LAKE FORECAST FOR DAYS 3 THROUGH 5.  
 
 
 
LEZ444-312200-  
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-  
948 AM EDT MON MAR 31 2025  
   
REST OF TODAY  
WEST WINDS 15 TO 20 KNOTS BECOMING NORTHWEST  
10 TO 15 KNOTS IN THE AFTERNOON. MOSTLY CLOUDY. WAVES 1 TO  
3 FEET.    
TONIGHT  
NORTH WINDS 10 TO 15 KNOTS. PARTLY CLOUDY. WAVES  
2 FEET OR LESS.    
TUESDAY  
NORTH WINDS 10 TO 15 KNOTS BECOMING NORTHEAST 5 TO  
10 KNOTS IN THE LATE MORNING AND EARLY AFTERNOON, THEN BECOMING  
EAST 10 TO 15 KNOTS EARLY IN THE AFTERNOON. MOSTLY SUNNY. WAVES  
2 FEET OR LESS.    
TUESDAY NIGHT  
EAST WINDS 10 TO 15 KNOTS INCREASING TO 15 TO  
20 KNOTS IN THE LATE EVENING AND OVERNIGHT. PARTLY CLOUDY IN THE  
EVENING BECOMING CLOUDY. WAVES 1 TO 3 FEET BUILDING TO 2 TO  
4 FEET IN THE LATE EVENING AND OVERNIGHT.  
 
SEE LAKE ERIE OPEN LAKE FORECAST FOR DAYS 3 THROUGH 5.  
 
THE WATER TEMPERATURE AT BELLE ISLE IS 44 DEGREES.  
 
 
 
SS  
 
YOU CAN OBTAIN YOUR LATEST NATIONAL WEATHER SERVICE FORECASTS ONLINE  
A WWW.WEATHER.GOV/GREATLAKES  
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