036  
FZUS61 KBUF 180541  
GLFLO  
 
OPEN LAKE FORECAST FOR LAKE ONTARIO  
NATIONAL WEATHER SERVICE BUFFALO NY  
141 AM EDT SUN AUG 18 2019  
 
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 WARM FRONT DRAPED FROM GEORGIAN BAY TO LAKE ONTARIO  
WILL MOVE NORTH OF THE LAKE TODAY. A 30.0 INCH HIGH WILL THEN  
BUILD INTO THE UPPER GREAT LAKES ON MONDAY AND TUESDAY, WHILE  
ANOTHER WEAK LOW SLOWLY TRACKS ACROSS THE LOWER GREAT LAKES. THE  
HIGH WILL PASS ACROSS THE LAKE TUESDAY NIGHT, THEN WILL DRIFT  
EASTWARD WEDNESDAY, ALLOWING A SHARP COLD FRONT TO CROSS THE LAKE  
WEDNESDAY EVENING.  
 
LOZ062-180915-  
LAKE ONTARIO OPEN WATERS FROM THE NIAGARA RIVER TO HAMLIN BEACH-  
141 AM EDT SUN AUG 18 2019  
   
OVERNIGHT
 
SOUTHWEST WINDS 5 TO 10 KNOTS. WAVES 1 FOOT OR  
LESS.    
SUNDAY
 
SOUTH WINDS 10 KNOTS OR LESS BECOMING EAST. SHOWERS AND  
THUNDERSTORMS LIKELY THROUGH EARLY AFTERNOON, THEN A CHANCE OF  
SHOWERS AND THUNDERSTORMS LATE. WAVES 1 FOOT OR LESS.    
SUNDAY NIGHT
 
SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST.  
A CHANCE OF SHOWERS AND THUNDERSTORMS IN THE EVENING, THEN A  
CHANCE OF SHOWERS OVERNIGHT. WAVES 2 FEET OR LESS.    
MONDAY
 
SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST. A CHANCE  
OF SHOWERS IN THE MORNING, THEN A CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE AFTERNOON. WAVES 1 TO 3 FEET.    
MONDAY NIGHT
 
WEST WINDS 10 KNOTS OR LESS BECOMING NORTH. WAVES  
2 FEET OR LESS.    
TUESDAY
 
LIGHT AND VARIABLE WINDS. A CHANCE OF SHOWERS TUESDAY  
NIGHT. WAVES 1 FOOT OR LESS.    
WEDNESDAY
 
SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING NORTHWEST AND  
INCREASING TO 15 TO 25 KNOTS. SHOWERS LIKELY WITH A CHANCE OF  
THUNDERSTORMS. WAVES 2 FEET OR LESS BUILDING TO 3 TO 5 FEET.    
THURSDAY
 
NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO  
15 KNOTS. WAVES 3 TO 5 FEET SUBSIDING TO 1 TO 3 FEET.  
 
WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.  
 

 
 
LOZ063>065-180915-  
LAKE ONTARIO OPEN WATERS FROM HAMLIN BEACH TO THE SAINT LAWRENCE  
RIVER-  
141 AM EDT SUN AUG 18 2019  
   
OVERNIGHT
 
SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES 2 FEET OR  
LESS.    
SUNDAY
 
SOUTH WINDS 5 TO 10 KNOTS BECOMING SOUTHEAST. A CHANCE  
OF SHOWERS EARLY, THEN SHOWERS AND THUNDERSTORMS LIKELY FROM LATE  
MORNING ON. WAVES 2 FEET OR LESS.    
SUNDAY NIGHT
 
SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST.  
A CHANCE OF SHOWERS AND THUNDERSTORMS IN THE EVENING, THEN A  
CHANCE OF SHOWERS OVERNIGHT. WAVES 2 FEET OR LESS.    
MONDAY
 
SOUTHWEST WINDS 10 TO 15 KNOTS BECOMING WEST. A CHANCE  
OF SHOWERS IN THE MORNING, THEN A CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE AFTERNOON. WAVES 1 TO 3 FEET.    
MONDAY NIGHT
 
WEST WINDS 10 KNOTS OR LESS BECOMING NORTHWEST.  
WAVES 1 TO 3 FEET.    
TUESDAY
 
NORTHWEST WINDS LESS THAN 10 KNOTS. A CHANCE OF  
SHOWERS TUESDAY NIGHT. WAVES 1 FOOT OR LESS.    
WEDNESDAY
 
SOUTHWEST WINDS 5 TO 10 KNOTS BECOMING NORTHWEST AND  
INCREASING TO 15 TO 25 KNOTS. SHOWERS LIKELY WITH A CHANCE OF  
THUNDERSTORMS. WAVES 2 FEET OR LESS BUILDING TO 3 TO 5 FEET.    
THURSDAY
 
NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO  
15 KNOTS. A CHANCE OF SHOWERS DURING THE DAY. WAVES 3 TO 5 FEET  
SUBSIDING TO 2 TO 4 FEET.  
 
WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.  
 

 
 
LOZ061-180915-  
MAFOR 1803/  
ONTARIO WEST 1/2 13500 11409 12209 11300 11400. WAVES 1 FOOT OR  
LESS.  
 
ONTARIO EAST 1/2 11410 12500 11400 11300 11309 11300 11400. WAVES  
2 FEET OR LESS.  
 

 
 
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