259  
FZUS61 KBUF 060202  
GLFLO  
 
OPEN LAKE FORECAST FOR LAKE ONTARIO  
NATIONAL WEATHER SERVICE BUFFALO NY  
1002 PM EDT SAT JUL 5 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 BROAD 30.2 INCH HIGH WIL DRIFT OFF OF THE MID-ATLANTIC  
COAST THROUGH TONIGHT. A WAVY COLD FRONTAL BOUNDARY WILL THEN  
GRADUALLY MOVE ACROSS THE UPPER GREAT LAKES AND INTO SOUTHERN  
ONTARIO ON SUNDAY BEFORE CROSSING THE LOWER GREAT LAKES MONDAY. IN  
THE WAKE OF THE FRONTAL PASSAGE, A 30.1 INCH HIGH WILL BUILD ACROSS  
THE LOWER GREAT LAKES TUESDAY AND INTO WEDNESDAY.  
 
LOZ062-060900-  
LAKE ONTARIO OPEN WATERS FROM THE NIAGARA RIVER TO HAMLIN BEACH-  
1002 PM EDT SAT JUL 5 2025  
   
OVERNIGHT  
SOUTHWEST WINDS AROUND 10 KNOTS. WAVES 2 FEET  
OR LESS.    
SUNDAY  
SOUTHWEST WINDS 10 TO 15 KNOTS INCREASING TO 15 TO  
20 KNOTS. WAVES 1 TO 3 FEET BUILDING TO 3 TO 5 FEET.    
SUNDAY NIGHT  
SOUTHWEST WINDS 15 TO 20 KNOTS BECOMING SOUTHEAST  
5 TO 15 KNOTS. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 3 TO  
5 FEET SUBSIDING TO 1 TO 3 FEET.    
MONDAY  
EAST WINDS 5 TO 10 KNOTS BECOMING NORTHWEST. A CHANCE  
OF SHOWERS AND THUNDERSTORMS. WAVES 1 FOOT OR LESS.    
MONDAY NIGHT  
NORTH WINDS 5 TO 10 KNOTS. A CHANCE OF SHOWERS  
AND THUNDERSTORMS IN THE EVENING, THEN A CHANCE OF SHOWERS  
OVERNIGHT. WAVES 1 FOOT OR LESS.    
TUESDAY  
NORTHEAST WINDS 5 TO 10 KNOTS BECOMING NORTHWEST.  
WAVES 1 FOOT OR LESS.    
WEDNESDAY  
NORTHEAST WINDS 10 KNOTS OR LESS BECOMING EAST.  
WAVES 1 FOOT OR LESS.    
THURSDAY  
EAST WINDS 5 TO 10 KNOTS BECOMING NORTHEAST. A CHANCE  
OF SHOWERS. WAVES 1 FOOT OR LESS.  
 
WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.  
 
 
 
LOZ063>065-060900-  
LAKE ONTARIO OPEN WATERS FROM HAMLIN BEACH TO THE SAINT LAWRENCE  
RIVER-  
1002 PM EDT SAT JUL 5 2025  
   
OVERNIGHT  
SOUTH WINDS 5 TO 10 KNOTS BECOMING SOUTHWEST.  
WAVES 2 FEET OR LESS.    
SUNDAY  
SOUTHWEST WINDS 10 TO 15 KNOTS. WAVES 1 TO 3 FEET.    
SUNDAY NIGHT  
SOUTHWEST WINDS 5 TO 10 KNOTS BECOMING SOUTH.  
WAVES 1 TO 3 FEET.    
MONDAY  
SOUTH WINDS 5 TO 10 KNOTS BECOMING NORTHWEST. A CHANCE  
OF SHOWERS AND THUNDERSTORMS. WAVES 1 FOOT OR LESS.    
MONDAY NIGHT  
NORTHWEST WINDS 5 TO 10 KNOTS BECOMING NORTH. A  
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 FOOT OR LESS.    
TUESDAY  
NORTH WINDS 10 KNOTS OR LESS BECOMING WEST. A CHANCE  
OF SHOWERS DURING THE DAY. WAVES 1 FOOT OR LESS.    
WEDNESDAY  
NORTHWEST WINDS LESS THAN 10 KNOTS BECOMING EAST.  
WAVES 1 FOOT OR LESS.    
THURSDAY  
EAST WINDS 5 TO 10 KNOTS BECOMING SOUTHEAST. A CHANCE  
OF SHOWERS. WAVES 1 FOOT OR LESS.  
 
WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.  
 
 
 
LOZ061-060900-  
MAFOR 0603/  
ONTARIO WEST 1/2 12500 12510 13520 11510. WAVES 2 FEET OR LESS  
OVERNIGHT. WAVES 1 TO 3 FEET BUILDING TO 3 TO 5 FEET SUNDAY.  
WAVES 3 TO 5 FEET SUBSIDING TO 1 TO 3 FEET SUNDAY EVENING.  
 
ONTARIO EAST 1/2 11400 11500 14510 12500. WAVES 2 FEET OR LESS  
OVERNIGHT AND SUNDAY. WAVES 1 TO 3 FEET SUNDAY EVENING.  
 
 
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