217  
FZUS53 KDTX 211930  
NSHDTX  
 
NEARSHORE MARINE FORECAST FOR MICHIGAN  
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI  
330 PM EDT TUE AUG 21 2018  
 
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.  
 
LHZ422-220315-  
INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI-  
330 PM EDT TUE AUG 21 2018  
   
..SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON
 
 
   
TONIGHT
 
NORTHWEST WINDS 15 TO 20 KNOTS WITH GUSTS TO 25 KNOTS.  
MOSTLY CLOUDY. SCATTERED LIGHT SHOWERS AND A SLIGHT CHANCE OF  
THUNDERSTORMS EARLY IN THE EVENING...THEN ISOLATED LIGHT SHOWERS  
IN THE LATE EVENING AND OVERNIGHT. WAVES 1 TO 3 FEET.    
WEDNESDAY
 
NORTHWEST WINDS 15 TO 20 KNOTS WITH GUSTS TO 25 KNOTS  
DIMINISHING TO 10 TO 15 KNOTS LATE IN THE AFTERNOON. PARTLY CLOUDY  
BECOMING MOSTLY SUNNY IN THE LATE MORNING AND EARLY AFTERNOON  
BECOMING PARTLY CLOUDY. WAVES 1 TO 3 FEET.    
WEDNESDAY NIGHT
 
NORTHWEST WINDS 10 TO 15 KNOTS. MOSTLY CLEAR.  
WAVES AROUND 2 FEET OR LESS.    
THURSDAY
 
SOUTHWEST WINDS 10 TO 15 KNOTS. SUNNY. WAVES AROUND  
2 FEET OR LESS.  
 
SEE LAKE HURON OPEN LAKE FORECAST FOR DAYS 3 THROUGH 5.  
 

 
 
LHZ421-220315-  
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER  
SAGINAW BAY-  
330 PM EDT TUE AUG 21 2018  
   
..SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON
 
 
   
TONIGHT
 
NORTH WINDS 15 TO 20 KNOTS INCREASING TO 20 TO 25  
KNOTS EARLY IN THE MORNING. CLOUDY. A SLIGHT CHANCE OF  
THUNDERSTORMS EARLY IN THE EVENING. SCATTERED SHOWERS UNTIL EARLY  
MORNING...THEN A SLIGHT CHANCE OF LIGHT SHOWERS EARLY IN THE  
MORNING. WAVES 4 TO 6 FEET. WAVES OCCASIONALLY AROUND 7 FEET.    
WEDNESDAY
 
NORTHWEST WINDS 20 TO 25 KNOTS WITH GUSTS TO  
30 KNOTS DIMINISHING TO 10 TO 15 KNOTS. PARTLY CLOUDY BECOMING  
MOSTLY SUNNY IN THE LATE MORNING AND EARLY AFTERNOON BECOMING  
PARTLY CLOUDY. A SLIGHT CHANCE OF LIGHT SHOWERS EARLY IN THE  
MORNING. WAVES 5 TO 7 FEET. WAVES OCCASIONALLY AROUND 10 FEET.    
WEDNESDAY 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.    
THURSDAY
 
SOUTHWEST WINDS 10 TO 15 KNOTS. SUNNY. WAVES AROUND  
2 FEET OR LESS.  
 
SEE LAKE HURON OPEN LAKE FORECAST FOR DAYS 3 THROUGH 5.  
 

 
 
LHZ441-220315-  
PORT AUSTIN TO HARBOR BEACH MI-  
330 PM EDT TUE AUG 21 2018  
   
..SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON
 
 
   
TONIGHT
 
NORTHWEST WINDS 15 TO 20 KNOTS. CLOUDY. A SLIGHT  
CHANCE OF THUNDERSTORMS EARLY IN THE EVENING. NUMEROUS LIGHT  
SHOWERS IN THE EVENING...THEN A CHANCE OF LIGHT SHOWERS AFTER  
MIDNIGHT. WAVES 5 TO 7 FEET. WAVES OCCASIONALLY AROUND 10 FEET.    
WEDNESDAY
 
NORTHWEST WINDS 20 TO 25 KNOTS WITH GUSTS TO  
30 KNOTS BECOMING NORTH 15 TO 20 KNOTS WITH GUSTS TO 30 KNOTS IN  
THE AFTERNOON. CLOUDY BECOMING PARTLY CLOUDY LATE IN THE MORNING  
BECOMING MOSTLY SUNNY. A SLIGHT CHANCE OF LIGHT SHOWERS. WAVES  
6 TO 9 FEET. WAVES OCCASIONALLY AROUND 12 FEET.    
WEDNESDAY NIGHT
 
NORTHWEST WINDS 10 TO 15 KNOTS INCREASING TO  
15 TO 20 KNOTS IN THE LATE EVENING AND EARLY MORNING...THEN  
DIMINISHING TO 10 TO 15 KNOTS EARLY IN THE MORNING. MOSTLY CLEAR.  
WAVES 3 TO 5 FEET. WAVES OCCASIONALLY AROUND 7 FEET.    
THURSDAY
 
WEST WINDS 10 TO 15 KNOTS. SUNNY. WAVES 1 TO 3 FEET.  
 
SEE LAKE HURON OPEN LAKE FORECAST FOR DAYS 3 THROUGH 5.  
 

 
 
LHZ442-220315-  
HARBOR BEACH TO PORT SANILAC MI-  
330 PM EDT TUE AUG 21 2018  
   
..SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON
 
 
   
TONIGHT
 
NORTHWEST WINDS 15 TO 20 KNOTS. CLOUDY. A SLIGHT  
CHANCE OF THUNDERSTORMS EARLY IN THE EVENING. LIGHT SHOWERS  
LIKELY UNTIL EARLY MORNING...THEN A CHANCE OF LIGHT SHOWERS EARLY  
IN THE MORNING. WAVES 4 TO 6 FEET. WAVES OCCASIONALLY AROUND  
8 FEET.    
WEDNESDAY
 
NORTHWEST WINDS 15 TO 20 KNOTS. CLOUDY BECOMING  
PARTLY CLOUDY LATE IN THE MORNING BECOMING MOSTLY SUNNY. A CHANCE  
OF LIGHT SHOWERS. WAVES 6 TO 9 FEET. WAVES OCCASIONALLY AROUND  
12 FEET.    
WEDNESDAY NIGHT
 
NORTHWEST WINDS 10 TO 15 KNOTS. MOSTLY CLEAR.  
A CHANCE OF LIGHT SHOWERS EARLY IN THE EVENING. WAVES 3 TO 5 FEET  
SUBSIDING TO 2 TO 4 FEET EARLY IN THE MORNING. WAVES OCCASIONALLY  
AROUND 7 FEET.    
THURSDAY
 
WEST WINDS 10 TO 15 KNOTS DIMINISHING TO 5 TO  
10 KNOTS IN THE LATE MORNING AND AFTERNOON. SUNNY. WAVES 1 TO  
3 FEET.  
 
SEE LAKE HURON OPEN LAKE FORECAST FOR DAYS 3 THROUGH 5.  
 

 
 
LHZ443-220315-  
PORT SANILAC TO PORT HURON MI-  
330 PM EDT TUE AUG 21 2018  
   
..SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON
 
 
   
TONIGHT
 
NORTHWEST WINDS 15 TO 20 KNOTS DIMINISHING TO 10 TO  
15 KNOTS IN THE LATE EVENING AND EARLY MORNING...THEN INCREASING  
TO 15 TO 20 KNOTS EARLY IN THE MORNING. MOSTLY CLOUDY. NUMEROUS  
SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS EARLY IN THE  
EVENING...THEN SCATTERED LIGHT SHOWERS IN THE LATE EVENING AND  
OVERNIGHT. WAVES 1 TO 3 FEET BUILDING TO 3 TO 5 FEET IN THE LATE  
EVENING AND OVERNIGHT. WAVES OCCASIONALLY AROUND 7 FEET.    
WEDNESDAY
 
NORTH WINDS 15 TO 20 KNOTS. CLOUDY WITH A CHANCE OF  
LIGHT SHOWERS EARLY IN THE MORNING...THEN PARTLY CLOUDY WITH A  
SLIGHT CHANCE OF LIGHT SHOWERS IN THE LATE MORNING AND AFTERNOON.  
WAVES 5 TO 7 FEET. WAVES OCCASIONALLY AROUND 10 FEET.    
WEDNESDAY NIGHT
 
NORTHWEST WINDS 10 TO 15 KNOTS. MOSTLY CLEAR.  
WAVES 3 TO 5 FEET SUBSIDING TO 1 TO 3 FEET AFTER MIDNIGHT. WAVES  
OCCASIONALLY AROUND 7 FEET.    
THURSDAY
 
WEST WINDS 10 TO 15 KNOTS DIMINISHING TO 5 TO  
10 KNOTS IN THE LATE MORNING AND AFTERNOON. SUNNY. WAVES AROUND  
2 FEET OR LESS.  
 
SEE LAKE HURON OPEN LAKE FORECAST FOR DAYS 3 THROUGH 5.  
 

 
 
LEZ444-220315-  
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-  
330 PM EDT TUE AUG 21 2018  
   
TONIGHT
 
NORTHWEST WINDS 10 TO 15 KNOTS WITH GUSTS TO 20 KNOTS  
LATE. MOSTLY CLOUDY BECOMING PARTLY CLOUDY IN THE LATE EVENING  
AND EARLY MORNING BECOMING MOSTLY CLOUDY. NUMEROUS LIGHT SHOWERS  
AND A SLIGHT CHANCE OF THUNDERSTORMS EARLY IN THE EVENING...THEN  
SCATTERED LIGHT SHOWERS IN THE LATE EVENING AND EARLY MORNING. A  
SLIGHT CHANCE OF LIGHT SHOWERS EARLY IN THE MORNING. WAVES AROUND  
2 FEET OR LESS.    
WEDNESDAY
 
NORTHWEST WINDS 15 TO 20 KNOTS DIMINISHING TO 10 TO  
15 KNOTS IN THE AFTERNOON. MOSTLY CLOUDY BECOMING PARTLY CLOUDY  
EARLY IN THE AFTERNOON BECOMING MOSTLY SUNNY. WAVES AROUND 2 FEET  
OR LESS.    
WEDNESDAY NIGHT
 
NORTHWEST WINDS 10 TO 15 KNOTS DIMINISHING TO  
5 TO 10 KNOTS AFTER MIDNIGHT. CLEAR. WAVES AROUND 2 FEET OR LESS.   
THURSDAY
 
WEST WINDS 5 TO 10 KNOTS. SUNNY. WAVES AROUND 2 FEET  
OR LESS.  
 
SEE LAKE ERIE OPEN LAKE FORECAST FOR DAYS 3 THROUGH 5.  
 
THE WATER TEMPERATURE AT BELLE ISLE IS 76.4 DEGREES.  
 

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