570  
FZUS61 KBUF 140202  
GLFLO  
 
OPEN LAKE FORECAST FOR LAKE ONTARIO  
NATIONAL WEATHER SERVICE BUFFALO NY  
1002 PM EDT SUN JUL 13 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 29.3 INCH LOW NEAR JAMES BAY WILL LIFT NORTH INTO  
NORTHERN QUEBEC, WHILE SLOWLY DRAGGING ITS TRAILING COLD FRONT  
ACROSS THE LAKE TONIGHT. A 30.1 INCH HIGH WILL SLOWLY DRIFT FROM THE  
UPPER MIDWEST TO NEW ENGLAND MONDAY 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.  
 
LOZ062-140900-  
LAKE ONTARIO OPEN WATERS FROM THE NIAGARA RIVER TO HAMLIN BEACH-  
1002 PM EDT SUN JUL 13 2025  
   
REST OF TONIGHT  
WEST WINDS 10 KNOTS OR LESS BECOMING  
NORTHWEST. WAVES 1 FOOT OR LESS.    
MONDAY  
LIGHT AND VARIABLE WINDS. WAVES 1 FOOT OR LESS.    
MONDAY NIGHT  
SOUTH WINDS 10 KNOTS OR LESS BECOMING WEST. WAVES  
1 FOOT OR LESS.    
TUESDAY  
WEST WINDS LESS THAN 10 KNOTS BECOMING EAST. WAVES  
1 FOOT OR LESS.    
TUESDAY NIGHT  
SOUTHEAST WINDS 10 KNOTS OR LESS BECOMING  
SOUTHWEST. WAVES 1 FOOT OR LESS.    
WEDNESDAY  
SOUTHWEST WINDS 10 KNOTS OR LESS. A CHANCE OF  
SHOWERS DURING THE DAY, THEN A CHANCE OF SHOWERS AND  
THUNDERSTORMS WEDNESDAY NIGHT. WAVES 2 FEET OR LESS.    
THURSDAY  
SOUTHWEST WINDS 10 TO 15 KNOTS BECOMING WEST. A  
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO 2 FEET.    
FRIDAY  
WEST WINDS 5 TO 10 KNOTS BECOMING NORTH. A CHANCE OF  
SHOWERS. WAVES 1 TO 2 FEET.  
 
WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.  
 
 
 
LOZ063>065-140900-  
LAKE ONTARIO OPEN WATERS FROM HAMLIN BEACH TO THE SAINT LAWRENCE  
RIVER-  
1002 PM EDT SUN JUL 13 2025  
   
REST OF TONIGHT  
SOUTH WINDS 5 TO 10 KNOTS BECOMING SOUTHWEST.  
A CHANCE OF SHOWERS AND THUNDERSTORMS. SOME THUNDERSTORMS MAY  
PRODUCE GUSTY WINDS LATE THIS EVENING. WAVES 1 FOOT OR LESS.    
MONDAY  
SOUTHWEST WINDS 10 KNOTS OR LESS. WAVES 1 FOOT OR LESS.   
MONDAY NIGHT  
SOUTH WINDS 10 KNOTS OR LESS BECOMING SOUTHWEST.  
WAVES 1 FOOT OR LESS.    
TUESDAY  
SOUTHWEST WINDS LESS THAN 10 KNOTS BECOMING WEST.  
WAVES 1 FOOT OR LESS.    
TUESDAY NIGHT  
SOUTH WINDS 10 KNOTS OR LESS. WAVES 1 FOOT OR  
LESS.    
WEDNESDAY  
SOUTH WINDS 5 TO 10 KNOTS. A CHANCE OF SHOWERS AND  
THUNDERSTORMS. WAVES 2 FEET OR LESS.    
THURSDAY  
SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST. SHOWERS  
LIKELY WITH A CHANCE OF THUNDERSTORMS. WAVES 1 TO 2 FEET.    
FRIDAY  
WEST WINDS 5 TO 15 KNOTS BECOMING NORTH. A CHANCE OF  
SHOWERS. WAVES 2 FEET OR LESS.  
 
WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.  
 
 
 
LOZ061-140900-  
MAFOR 1403/  
ONTARIO WEST 1/2 11600 11700 12600 12300 11400 11500. WAVES 1  
FOOT OR LESS.  
 
ONTARIO EAST 1/2 14500 12600 12400. A CHANCE OF SHOWERS LATE THIS  
EVENING. WAVES 1 FOOT OR LESS.  
 
 
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