062  
FZUS61 KBUF 141402  
GLFLO  
 
OPEN LAKE FORECAST FOR LAKE ONTARIO  
NATIONAL WEATHER SERVICE BUFFALO NY  
1002 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 WEAK COLD FRONT WILL CROSS THE LOWER GREAT LAKES TODAY. 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.  
 
LOZ062-142100-  
LAKE ONTARIO OPEN WATERS FROM THE NIAGARA RIVER TO HAMLIN BEACH-  
1002 AM EDT MON JUL 14 2025  
   
THIS AFTERNOON
 
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>065-142100-  
LAKE ONTARIO OPEN WATERS FROM HAMLIN BEACH TO THE SAINT LAWRENCE  
RIVER-  
1002 AM EDT MON JUL 14 2025  
   
THIS AFTERNOON
 
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.  
 

 
 
LOZ061-142100-  
MAFOR 1415/  
ONTARIO WEST 1/2 12300 12400 14600. WAVES 1 FOOT OR LESS.  
 
ONTARIO EAST 1/2 11700 11400 11500 11400 14500. WAVES 1 FOOT OR  
LESS.  
 

 
 
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