630
FZUS61 KBUF 242102
GLFLO
OPEN LAKE FORECAST FOR LAKE ONTARIO
NATIONAL WEATHER SERVICE BUFFALO NY
402 PM EST WED DEC 24 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 30.3 INCH SURFACE HIGH DRAPED ACROSS THE LOWER GREAT LAKES WILL
SLIDE SOUTHEAST AND OFF THE MID-ATLANTIC COAST TONIGHT. MEANWHILE A
WEAK SURFACE LOW WILL SLIDE FROM SOUTHERN QUEBEC TO NEW ENGLAND
LATER TONIGHT AND CHRISTMAS DAY, WITH ITS TRAILING COLD FRONT
CROSSING THE LAKE CHRISTMAS MORNING. FOLLOWING THE FRONTAL PASSAGE,
A STRONG 30.6 INCH HIGH OVER ONTARIO WILL BUILD ACROSS THE LAKE
CHRISTMAS NIGHT. THE HIGH WILL THEN DRIFT INTO QUEBEC FRIDAY WHILE A
COMPACT 29.7 INCH LOW SLIDES ACROSS OHIO AND PENNSYLVANIA, WITH THE
HIGH THEN BUILDING BACK ACROSS THE LAKE SATURDAY. COMPLEX LOW
PRESSURE AVERAGING 29.6 INCHES WILL THEN CROSS THE LOWER GREAT LAKES
LATER SUNDAY AND SUNDAY NIGHT, BEFORE MOVING TO THE CANADIAN
MARITIMES MONDAY.
LOZ062-250400-
LAKE ONTARIO OPEN WATERS FROM THE NIAGARA RIVER TO HAMLIN BEACH-
402 PM EST WED DEC 24 2025
TONIGHT
WEST WINDS 5 TO 10 KNOTS. WAVES 2 FEET OR LESS.
THURSDAY
WEST WINDS 10 TO 15 KNOTS BECOMING NORTH 15 TO
20 KNOTS. WAVES 1 TO 3 FEET.
THURSDAY NIGHT
NORTH WINDS 15 TO 20 KNOTS BECOMING EAST. WAVES
2 TO 4 FEET.
FRIDAY
EAST WINDS 15 TO 25 KNOTS INCREASING TO 30 KNOTS. A
CHANCE OF SNOW SHOWERS IN THE MORNING, THEN SNOW IN THE
AFTERNOON. WAVES 3 TO 6 FEET BUILDING TO 5 TO 8 FEET. WAVES
OCCASIONALLY AROUND 10 FEET.
FRIDAY NIGHT
EAST WINDS TO 30 KNOTS DIMINISHING TO 15 TO
20 KNOTS. SNOW. WAVES 5 TO 8 FEET. WAVES OCCASIONALLY AROUND
10 FEET.
SATURDAY
EAST WINDS 10 TO 15 KNOTS. WAVES 3 TO 5 FEET
SUBSIDING TO 1 TO 2 FEET.
SUNDAY
EAST WINDS AROUND 10 KNOTS BECOMING SOUTHWEST AND
INCREASING TO 30 KNOTS. RAIN SHOWERS LIKELY DURING THE DAY, THEN
RAIN SHOWERS SUNDAY NIGHT. WAVES 1 TO 2 FEET BUILDING TO 6 TO
9 FEET. WAVES OCCASIONALLY AROUND 11 FEET.
MONDAY
WEST GALES TO 40 KNOTS BECOMING NORTHWEST TO 35 KNOTS.
LAKE EFFECT SNOW AND RAIN SHOWERS DURING THE DAY, THEN LAKE
EFFECT SNOW SHOWERS MONDAY NIGHT. WAVES 12 TO 16 FEET BUILDING TO
13 TO 18 FEET, THEN SUBSIDING TO 11 TO 15 FEET. WAVES
OCCASIONALLY AROUND 23 FEET.
LOZ063-250400-
LAKE ONTARIO OPEN WATERS FROM HAMLIN BEACH TO SODUS BAY-
402 PM EST WED DEC 24 2025
TONIGHT
WEST WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST. WAVES
1 TO 2 FEET.
THURSDAY
WEST WINDS 10 TO 15 KNOTS BECOMING NORTH 15 TO
20 KNOTS. WAVES 1 TO 3 FEET BUILDING TO 3 TO 5 FEET.
THURSDAY NIGHT
NORTH WINDS 15 TO 20 KNOTS BECOMING NORTHEAST
10 TO 15 KNOTS. WAVES 3 TO 5 FEET.
FRIDAY
EAST WINDS 15 TO 25 KNOTS. SNOW LIKELY IN THE
AFTERNOON. WAVES 3 TO 6 FEET.
FRIDAY NIGHT
EAST WINDS 15 TO 20 KNOTS. SNOW. WAVES 3 TO
6 FEET.
SATURDAY
EAST WINDS 15 TO 20 KNOTS BECOMING SOUTHEAST 10 TO
15 KNOTS. WAVES 3 TO 5 FEET SUBSIDING TO 1 TO 2 FEET.
SUNDAY
SOUTHEAST WINDS 10 TO 15 KNOTS BECOMING SOUTHWEST AND
INCREASING TO 30 KNOTS. RAIN SHOWERS LIKELY DURING THE DAY, THEN
RAIN SHOWERS SUNDAY NIGHT. WAVES 1 TO 3 FEET BUILDING TO 6 TO
9 FEET. WAVES OCCASIONALLY AROUND 11 FEET.
MONDAY
WEST GALES TO 45 KNOTS BECOMING NORTHWEST TO 40 KNOTS.
LAKE EFFECT SNOW AND RAIN SHOWERS DURING THE DAY, THEN LAKE
EFFECT SNOW SHOWERS MONDAY NIGHT. WAVES 13 TO 17 FEET BUILDING TO
15 TO 20 FEET. WAVES OCCASIONALLY AROUND 26 FEET.
LOZ064-065-250400-
LAKE ONTARIO OPEN WATERS FROM SODUS BAY TO THE SAINT LAWRENCE
RIVER-
402 PM EST WED DEC 24 2025
TONIGHT
SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES 1 TO 3 FEET.
THURSDAY
WEST WINDS 10 TO 15 KNOTS BECOMING NORTH AND
INCREASING TO 15 TO 25 KNOTS. WAVES 1 TO 3 FEET BUILDING TO 3 TO
6 FEET.
THURSDAY NIGHT
NORTH WINDS 15 TO 25 KNOTS BECOMING NORTHEAST
AND DIMINISHING TO 10 TO 15 KNOTS. WAVES 3 TO 6 FEET SUBSIDING TO
2 TO 4 FEET.
FRIDAY
NORTHEAST WINDS 10 TO 15 KNOTS BECOMING EAST 15 TO
20 KNOTS. SNOW LIKELY IN THE AFTERNOON. WAVES 1 TO 3 FEET
BUILDING TO 2 TO 4 FEET.
FRIDAY NIGHT
EAST WINDS 15 TO 20 KNOTS. SNOW. WAVES 2 TO
4 FEET.
SATURDAY
EAST WINDS 15 TO 20 KNOTS BECOMING SOUTHEAST 10 TO
15 KNOTS. A CHANCE OF SNOW SHOWERS DURING THE DAY. WAVES 2 TO
4 FEET SUBSIDING TO 1 TO 3 FEET.
SUNDAY
SOUTHEAST WINDS 10 TO 15 KNOTS BECOMING SOUTH AND
INCREASING TO 30 KNOTS. RAIN SHOWERS LIKELY DURING THE DAY, THEN
RAIN SHOWERS SUNDAY NIGHT. WAVES 1 TO 3 FEET BUILDING TO 6 TO
9 FEET. WAVES OCCASIONALLY AROUND 11 FEET.
MONDAY
WEST GALES TO 40 KNOTS BECOMING NORTHWEST. LAKE EFFECT
SNOW AND RAIN SHOWERS DURING THE DAY, THEN LAKE EFFECT SNOW
SHOWERS MONDAY NIGHT. WAVES 13 TO 17 FEET BUILDING TO 16 TO
21 FEET, THEN SUBSIDING TO 15 TO 19 FEET. WAVES OCCASIONALLY
AROUND 27 FEET.
LOZ061-250400-
MAFOR 2422/
ONTARIO WEST 1/2 11600 12500 11510 11610 11710 12810. WAVES 2
FEET OR LESS TONIGHT. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET
THURSDAY.
ONTARIO EAST 1/2 11600 11500 12510 11610 11720 11820 11830. WAVES
1 TO 3 FEET TONIGHT. WAVES 1 TO 3 FEET BUILDING TO 3 TO 5 FEET
THURSDAY.
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