294
FZUS61 KBUF 042001
GLFLO
OPEN LAKE FORECAST FOR LAKE ONTARIO
NATIONAL WEATHER SERVICE BUFFALO NY
401 PM EDT SAT JUL 4 2026
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 FRONTAL BOUNDARY WILL SETTLE SOUTH ACROSS THE
LAKE THIS AFTERNOON INTO THIS EVENING. MEANWHILE, A 30.2 INCH HIGH
WILL BUILD FROM HUDSON BAY TO QUEBEC AND NORTHERN NEW ENGLAND BY
SUNDAY NIGHT. A WEAK 29.9 INCH LOW WILL THEN DEVELOP OVER OHIO LATE
SUNDAY AND MOVE TO THE MID ATLANTIC BY LATE MONDAY. A BROAD 30.1
INCH HIGH IS THEN FORECAST TO BUILD INTO THE GREAT LAKES TUESDAY
THROUGH WEDNESDAY. A COLD FRONTAL BOUNDARY WILL SLIDE SOUTHEAST
ACROSS THE LAKE THURSDAY.
LOZ062-050300-
LAKE ONTARIO OPEN WATERS FROM THE NIAGARA RIVER TO HAMLIN BEACH-
401 PM EDT SAT JUL 4 2026
TONIGHT
NORTH WINDS 10 KNOTS OR LESS BECOMING NORTHEAST. WAVES
1 FOOT OR LESS.
SUNDAY
NORTHEAST WINDS 5 TO 15 KNOTS BECOMING EAST. WAVES 1 TO
3 FEET.
SUNDAY NIGHT
EAST WINDS 5 TO 15 KNOTS BECOMING NORTHEAST.
WAVES 2 FEET OR LESS.
MONDAY
NORTHEAST WINDS 10 TO 15 KNOTS BECOMING EAST 15 TO
20 KNOTS. A CHANCE OF SHOWERS. WAVES 1 TO 3 FEET.
MONDAY NIGHT
EAST WINDS 15 TO 20 KNOTS DIMINISHING TO 10 TO
15 KNOTS. A CHANCE OF SHOWERS IN THE EVENING. WAVES 1 TO 3 FEET.
TUESDAY
NORTHEAST WINDS 10 KNOTS OR LESS BECOMING SOUTHWEST.
WAVES 2 FEET OR LESS.
WEDNESDAY
SOUTHWEST WINDS 10 KNOTS OR LESS. WAVES 1 FOOT OR
LESS.
THURSDAY
SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST. A CHANCE
OF SHOWERS. WAVES 1 FOOT OR LESS.
LOZ063>065-050300-
LAKE ONTARIO OPEN WATERS FROM HAMLIN BEACH TO THE SAINT LAWRENCE
RIVER-
401 PM EDT SAT JUL 4 2026
TONIGHT
NORTHWEST WINDS LESS THAN 10 KNOTS. WAVES 1 FOOT OR
LESS.
SUNDAY
NORTHEAST WINDS 5 TO 10 KNOTS. WAVES 1 FOOT OR LESS.
SUNDAY NIGHT
NORTHEAST WINDS 5 TO 10 KNOTS BECOMING EAST. A
CHANCE OF SHOWERS OVERNIGHT. WAVES 2 FEET OR LESS.
MONDAY
EAST WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS. WAVES
2 FEET OR LESS.
MONDAY NIGHT
EAST WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS.
WAVES 2 FEET OR LESS.
TUESDAY
EAST WINDS 10 KNOTS OR LESS BECOMING SOUTHWEST. A
CHANCE OF SHOWERS DURING THE DAY. WAVES 1 FOOT OR LESS.
WEDNESDAY
SOUTHWEST WINDS 5 TO 10 KNOTS. WAVES 1 FOOT OR LESS.
THURSDAY
SOUTHWEST WINDS 5 TO 10 KNOTS BECOMING WEST. A CHANCE
OF SHOWERS. WAVES 1 FOOT OR LESS.
LOZ061-050300-
MAFOR 0421/
ONTARIO WEST 1/2 11700 11100 11200 12100 11110 12210. A CHANCE OF
SHOWERS AND THUNDERSTORMS EARLY THIS EVENING. WAVES 1 FOOT OR
LESS TONIGHT. WAVES 1 TO 3 FEET SUNDAY.
ONTARIO EAST 1/2 11700 11800 15100. A CHANCE OF SHOWERS EARLY
THIS EVENING. WAVES 1 FOOT OR LESS.
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