267  
FZUS61 KBUF 221402  
GLFLO  
 
OPEN LAKE FORECAST FOR LAKE ONTARIO  
NATIONAL WEATHER SERVICE BUFFALO NY  
1002 AM EDT FRI AUG 22 2025  
 
FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE ONTARIO  
 
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.  
   
SYNOPSIS
 
A 30.1 INCH HIGH WILL BUILD ACROSS THE LOWER GREAT LAKES  
TODAY...THEN WILL SLIDE EAST ACROSS NEW ENGLAND TONIGHT. A 29.5 INCH  
LOW WILL MOVE TO NEAR JAMES BAY SATURDAY, THEN WILL LINGER IN PLACE  
THROUGH SUNDAY WHILE PUSHING A COLD FRONT ACROSS THE LAKE LATER  
SUNDAY AFTERNOON AND EVENING. A SECONDARY FRONTAL BOUNDARY WILL  
CROSS THE LAKE MONDAY, WITH TROUGHING REMAINING ACROSS THE LAKE  
THROUGH MID WEEK.  
 
LOZ062-222100-  
LAKE ONTARIO OPEN WATERS FROM THE NIAGARA RIVER TO HAMLIN BEACH-  
1002 AM EDT FRI AUG 22 2025  
   
THIS AFTERNOON
 
WEST WINDS LESS THAN 10 KNOTS BECOMING SOUTH.  
WAVES 1 FOOT OR LESS.    
TONIGHT
 
SOUTHEAST WINDS 10 KNOTS OR LESS BECOMING SOUTH. WAVES  
1 FOOT OR LESS.    
SATURDAY
 
SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES 2 FEET OR LESS.    
SATURDAY NIGHT
 
SOUTHWEST WINDS 10 TO 15 KNOTS. SHOWERS LIKELY.  
WAVES 1 TO 3 FEET.    
SUNDAY
 
WEST WINDS 10 TO 15 KNOTS. A CHANCE OF SHOWERS DURING  
THE DAY. WAVES 2 TO 3 FEET.    
MONDAY
 
WEST WINDS 10 TO 15 KNOTS. A CHANCE OF SHOWERS. WAVES  
2 TO 4 FEET.    
TUESDAY
 
WEST WINDS 10 TO 15 KNOTS BECOMING NORTHWEST. A CHANCE  
OF SHOWERS DURING THE DAY. WAVES 2 TO 4 FEET.  
 

 
 
LOZ063-222100-  
LAKE ONTARIO OPEN WATERS FROM HAMLIN BEACH TO SODUS BAY-  
1002 AM EDT FRI AUG 22 2025  
   
THIS AFTERNOON
 
NORTHWEST WINDS 10 KNOTS OR LESS BECOMING WEST.  
WAVES 1 FOOT OR LESS.    
TONIGHT
 
SOUTH WINDS 10 KNOTS OR LESS. WAVES 1 FOOT OR LESS.    
SATURDAY
 
SOUTH WINDS 10 KNOTS OR LESS BECOMING SOUTHEAST.  
WAVES 1 FOOT OR LESS.    
SATURDAY NIGHT
 
SOUTH WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST  
15 TO 20 KNOTS. SHOWERS LIKELY WITH A CHANCE OF THUNDERSTORMS IN  
THE EVENING, THEN SHOWERS LIKELY OVERNIGHT. WAVES 1 TO 3 FEET.    
SUNDAY
 
SOUTHWEST WINDS 15 TO 20 KNOTS DIMINISHING TO 10 TO  
15 KNOTS. SHOWERS LIKELY WITH A CHANCE OF THUNDERSTORMS DURING  
THE DAY, THEN A CHANCE OF SHOWERS AND THUNDERSTORMS SUNDAY NIGHT.  
WAVES 1 TO 3 FEET.    
MONDAY
 
WEST WINDS 10 TO 15 KNOTS INCREASING TO 15 TO 20 KNOTS.  
A CHANCE OF SHOWERS. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET.    
TUESDAY
 
WEST WINDS 15 TO 20 KNOTS BECOMING NORTHWEST 10 TO  
15 KNOTS. A CHANCE OF SHOWERS. WAVES 2 TO 4 FEET.  
 
WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.  
 

 
 
LOZ064-065-222100-  
LAKE ONTARIO OPEN WATERS FROM SODUS BAY TO THE SAINT LAWRENCE  
RIVER-  
1002 AM EDT FRI AUG 22 2025  
   
THIS AFTERNOON
 
NORTHWEST WINDS 10 KNOTS OR LESS BECOMING WEST.  
WAVES 1 FOOT OR LESS.    
TONIGHT
 
SOUTHWEST WINDS 10 KNOTS OR LESS BECOMING SOUTH. WAVES  
1 FOOT OR LESS.    
SATURDAY
 
SOUTH WINDS 5 TO 15 KNOTS. WAVES 2 FEET OR LESS.    
SATURDAY NIGHT
 
SOUTH WINDS 10 TO 15 KNOTS INCREASING TO 15 TO  
20 KNOTS. SHOWERS LIKELY WITH A CHANCE OF THUNDERSTORMS. WAVES  
1 TO 3 FEET BUILDING TO 3 TO 5 FEET.    
SUNDAY
 
SOUTHWEST WINDS 15 TO 20 KNOTS DIMINISHING TO 5 TO  
15 KNOTS. SHOWERS LIKELY WITH A CHANCE OF THUNDERSTORMS DURING  
THE DAY, THEN A CHANCE OF SHOWERS AND THUNDERSTORMS SUNDAY NIGHT.  
WAVES 3 TO 5 FEET SUBSIDING TO 1 TO 2 FEET.    
MONDAY
 
SOUTHWEST WINDS 10 TO 15 KNOTS BECOMING WEST. A CHANCE  
OF SHOWERS. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET.    
TUESDAY
 
WEST WINDS 15 TO 20 KNOTS BECOMING NORTHWEST 10 TO  
15 KNOTS. A CHANCE OF SHOWERS DURING THE DAY. WAVES 2 TO 4 FEET.  
 
WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.  
 

 
 
LOZ061-222100-  
MAFOR 2215/  
ONTARIO WEST 1/2 11600 11500 11300 13400 12500. WAVES 1 FOOT OR  
LESS.  
 
ONTARIO EAST 1/2 11700 11600 11500 14400 11410. WAVES 2 FEET OR  
LESS.  
 

 
 
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