687  
FZUS61 KBUF 140802  
GLFLO  
 
OPEN LAKE FORECAST FOR LAKE ONTARIO  
NATIONAL WEATHER SERVICE BUFFALO NY  
402 AM EDT MON JUL 14 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 SLOWLY DRIFT FROM THE UPPER  
MIDWEST TO NEW ENGLAND THROUGH WEDNESDAY. A 29.7 INCH LOW WILL TRACK  
NORTHEASTWARD ACROSS THE GREAT LAKES AND INTO QUEBEC WEDNESDAY NIGHT  
AND THURSDAY. THE TRAILING COLD FRONT WILL SLOWLY TRACK ACROSS THE  
LAKE ON FRIDAY AS ANOTHER WAVE TRACKS ACROSS THE REGION.  
 
LOZ062-141500-  
LAKE ONTARIO OPEN WATERS FROM THE NIAGARA RIVER TO HAMLIN BEACH-  
402 AM EDT MON JUL 14 2025  
   
TODAY
 
LIGHT AND VARIABLE WINDS. WAVES 1 FOOT OR LESS.    
TONIGHT
 
SOUTH WINDS 10 KNOTS OR LESS BECOMING WEST. WAVES  
1 FOOT OR LESS.    
TUESDAY
 
WEST WINDS LESS THAN 10 KNOTS. WAVES 1 FOOT OR LESS.    
TUESDAY NIGHT
 
SOUTHEAST WINDS 5 TO 10 KNOTS BECOMING  
SOUTHWEST. WAVES 1 FOOT OR LESS.    
WEDNESDAY
 
SOUTHWEST WINDS 5 TO 10 KNOTS. A CHANCE OF SHOWERS  
AND THUNDERSTORMS WEDNESDAY NIGHT. WAVES 1 FOOT OR LESS.    
THURSDAY
 
SOUTHWEST WINDS 10 TO 15 KNOTS BECOMING NORTHWEST.  
SHOWERS LIKELY WITH A CHANCE OF THUNDERSTORMS. WAVES 1 TO 3 FEET.   
FRIDAY
 
NORTHWEST WINDS AROUND 10 KNOTS BECOMING NORTH. A  
CHANCE OF SHOWERS DURING THE DAY. WAVES 1 TO 2 FEET.  
 
WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.  
 

 
 
LOZ063>065-141500-  
LAKE ONTARIO OPEN WATERS FROM HAMLIN BEACH TO THE SAINT LAWRENCE  
RIVER-  
402 AM EDT MON JUL 14 2025  
   
TODAY
 
NORTH WINDS 10 KNOTS OR LESS BECOMING SOUTHWEST. WAVES  
1 FOOT OR LESS.    
TONIGHT
 
SOUTH WINDS 10 KNOTS OR LESS BECOMING SOUTHWEST. WAVES  
1 FOOT OR LESS.    
TUESDAY
 
SOUTHWEST WINDS LESS THAN 10 KNOTS BECOMING SOUTH.  
WAVES 1 FOOT OR LESS.    
TUESDAY NIGHT
 
SOUTHEAST WINDS 10 KNOTS OR LESS BECOMING SOUTH.  
WAVES 1 FOOT OR LESS.    
WEDNESDAY
 
SOUTH WINDS 5 TO 10 KNOTS. A CHANCE OF SHOWERS AND  
THUNDERSTORMS WEDNESDAY NIGHT. WAVES 2 FEET OR LESS.    
THURSDAY
 
SOUTHWEST WINDS 10 TO 15 KNOTS BECOMING NORTHWEST.  
SHOWERS LIKELY WITH A CHANCE OF THUNDERSTORMS. WAVES 1 TO 3 FEET.   
FRIDAY
 
NORTHWEST WINDS 5 TO 15 KNOTS BECOMING NORTH. A CHANCE  
OF SHOWERS. WAVES 1 TO 3 FEET SUBSIDING TO 1 FOOT OR LESS.  
 
WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.  
 

 
 
LOZ061-141500-  
MAFOR 1409/  
ONTARIO WEST 1/2 11800 13300 12400 12600. WAVES 1 FOOT OR LESS.  
 
ONTARIO EAST 1/2 11600 12700 11400 11500 11400 12500. WAVES 1  
FOOT OR LESS.  
 

 
 
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