256
FZUS61 KBUF 300203
GLFLO
OPEN LAKE FORECAST FOR LAKE ONTARIO
NATIONAL WEATHER SERVICE BUFFALO NY
1003 PM EDT WED JUL 29 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 TROUGH AVERAGING 29.6 INCHES LINGERS OVER LAKE ONTARIO
THROUGH TONIGHT. ON THURSDAY, THE TROUGH BEGINS TO EXIT EASTWARD
WHILE A RIDGE AVERAGING 30.0 INCHES BUILDS FROM THE WESTERN GREAT
LAKES THROUGH THURSDAY NIGHT. THE RIDGE EXITS SLOWLY EASTWARD FRIDAY
THROUGH SATURDAY BEFORE A COLD FRONT SWEEPS EASTWARD ACROSS LAKE
ONTARIO ON SUNDAY. IN THE WAKE OF THE COLD FRONTAL PASSAGE, A 30.0
INCH HIGH OVER THE UPPER GREAT LAKES SUNDAY, WILL SLOWLY BUILD
SOUTHEAST ACROSS THE CENTRAL AND LOWER GREAT LAKES SUNDAY NIGHT
THROUGH TUESDAY.
LOZ062-300900-
LAKE ONTARIO OPEN WATERS FROM THE NIAGARA RIVER TO HAMLIN BEACH-
1003 PM EDT WED JUL 29 2026
REST OF TONIGHT
NORTHWEST WINDS 15 TO 20 KNOTS BECOMING NORTH
10 TO 15 KNOTS. WAVES 1 TO 3 FEET.
THURSDAY
NORTH WINDS 5 TO 15 KNOTS BECOMING WEST. WAVES 1 TO
3 FEET SUBSIDING TO 1 FOOT OR LESS.
THURSDAY NIGHT
WEST WINDS 10 KNOTS OR LESS BECOMING NORTHWEST.
WAVES 1 FOOT OR LESS.
FRIDAY
WEST WINDS LESS THAN 10 KNOTS BECOMING SOUTHWEST. WAVES
1 FOOT OR LESS.
FRIDAY NIGHT
SOUTHWEST WINDS LESS THAN 10 KNOTS. WAVES 1 FOOT
OR LESS.
SATURDAY
SOUTH WINDS LESS THAN 10 KNOTS BECOMING NORTHEAST. A
CHANCE OF SHOWERS SATURDAY NIGHT. WAVES 1 FOOT OR LESS.
SUNDAY
NORTHEAST WINDS 10 KNOTS OR LESS BECOMING NORTH. A
CHANCE OF SHOWERS. WAVES 1 FOOT OR LESS.
MONDAY
NORTH WINDS 10 KNOTS OR LESS BECOMING NORTHWEST. WAVES
1 FOOT OR LESS.
LOZ063>065-300900-
LAKE ONTARIO OPEN WATERS FROM HAMLIN BEACH TO THE SAINT LAWRENCE
RIVER-
1003 PM EDT WED JUL 29 2026
REST OF TONIGHT
NORTH WINDS 10 TO 15 KNOTS. SHOWERS LIKELY
LATE THIS EVENING, THEN A CHANCE OF SHOWERS AFTER MIDNIGHT. WAVES
1 TO 3 FEET.
THURSDAY
NORTH WINDS 5 TO 15 KNOTS BECOMING NORTHWEST. WAVES
2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET.
THURSDAY NIGHT
WEST WINDS 10 KNOTS OR LESS BECOMING NORTHWEST.
WAVES 1 FOOT OR LESS.
FRIDAY
NORTHWEST WINDS 10 KNOTS OR LESS BECOMING WEST. WAVES
1 FOOT OR LESS.
FRIDAY NIGHT
SOUTHWEST WINDS 10 KNOTS OR LESS BECOMING SOUTH.
WAVES 1 FOOT OR LESS.
SATURDAY
SOUTH WINDS 10 KNOTS OR LESS. A CHANCE OF SHOWERS
SATURDAY NIGHT. WAVES 1 FOOT OR LESS.
SUNDAY
SOUTH WINDS 5 TO 10 KNOTS BECOMING NORTH. SHOWERS
LIKELY WITH A CHANCE OF THUNDERSTORMS. WAVES 1 FOOT OR LESS.
MONDAY
NORTH WINDS 10 KNOTS OR LESS BECOMING WEST. WAVES
1 FOOT OR LESS.
WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.
LOZ061-300900-
MAFOR 3003/
ONTARIO WEST 1/2 14810 11700 13600. WAVES 1 TO 3 FEET SUBSIDING
TO 1 FOOT OR LESS OVERNIGHT AND THURSDAY. WAVES 1 FOOT OR LESS
THURSDAY EVENING.
ONTARIO EAST 1/2 14810 11810 12700 11600. A CHANCE OF SHOWERS
LATE THIS EVENING. WAVES 1 TO 3 FEET OVERNIGHT. WAVES 2 TO 4 FEET
SUBSIDING TO 1 TO 3 FEET THURSDAY. WAVES 1 FOOT OR LESS THURSDAY
EVENING.
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