Great Lakes Forecast
Issued by NWS

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FZUS61 KBUF 210212
GLFLO

OPEN LAKE FORECAST FOR LAKE ONTARIO
NATIONAL WEATHER SERVICE BUFFALO NY
1012 PM EDT THU APR 20 2017

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE ONTARIO

.SYNOPSIS...A 29.8 INCH LOW WILL TRACK ACROSS SOUTHERN ONTARIO
PROVINCE OVERNIGHT...AND INTO QUEBEC ON FRIDAY. AS THE LOW MOVES
EAST OF THE LAKE ON SATURDAY...A 30.2 INCH HIGH OVER THE UPPER
MISSISSIPPI VALLEY WILL REACH TO THE EAST ACROSS THE LOWER GREAT
LAKES. HIGH PRESSURE WILL REMAIN IN CONTROL ACROSS LAKE ONTARIO
SUNDAY AND MONDAY.

LOZ062-063-210915-
LAKE ONTARIO OPEN WATERS FROM THE NIAGARA RIVER TO SODUS BAY-
1012 PM EDT THU APR 20 2017

.OVERNIGHT...EAST WINDS 15 TO 25 KNOTS BECOMING SOUTH AND
DIMINISHING TO 10 TO 15 KNOTS. SHOWERS AND SCATTERED
THUNDERSTORMS...THEN A CHANCE OF SHOWERS LATE. WAVES 3 TO 6 FEET
SUBSIDING TO 1 TO 3 FEET.
.FRIDAY...SOUTHWEST WINDS 10 TO 15 KNOTS BECOMING WEST 15 TO
20 KNOTS. WAVES 2 FEET OR LESS BUILDING TO 2 TO 4 FEET.
.FRIDAY NIGHT...WEST WINDS 15 TO 20 KNOTS. WAVES 2 TO 4 FEET.
.SATURDAY...NORTHWEST WINDS 15 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS. WAVES 2 TO 4 FEET SUBSIDING TO 2 FEET OR LESS.
.SATURDAY NIGHT...WEST WINDS 5 TO 10 KNOTS BECOMING NORTH. WAVES
1 FOOT OR LESS.
.SUNDAY...NORTHEAST WINDS 10 KNOTS OR LESS BECOMING NORTH 10 TO
15 KNOTS. WAVES 2 FEET OR LESS.
.MONDAY...NORTHEAST WINDS 15 TO 20 KNOTS BECOMING EAST 5 TO
15 KNOTS. WAVES 1 TO 3 FEET.
.TUESDAY...SOUTHEAST WINDS 10 TO 15 KNOTS BECOMING SOUTH. WAVES
2 FEET OR LESS.

WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.

$$

LOZ064-065-210915-
LAKE ONTARIO OPEN WATERS FROM SODUS BAY TO THE SAINT LAWRENCE
RIVER-
1012 PM EDT THU APR 20 2017

.OVERNIGHT...EAST WINDS 15 TO 20 KNOTS BECOMING SOUTHEAST.
SHOWERS AND SCATTERED THUNDERSTORMS...THEN SHOWERS LIKELY LATE.
WAVES 1 TO 3 FEET.
.FRIDAY...SOUTHWEST WINDS 10 TO 15 KNOTS BECOMING WEST 15 TO
20 KNOTS. A CHANCE OF SHOWERS EARLY. WAVES 1 TO 3 FEET BUILDING
TO 2 TO 4 FEET.
.FRIDAY NIGHT...WEST WINDS 10 TO 15 KNOTS INCREASING TO 15 TO
20 KNOTS. WAVES 2 TO 4 FEET.
.SATURDAY...NORTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST. WAVES
2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET.
.SATURDAY NIGHT...WEST WINDS 5 TO 10 KNOTS BECOMING NORTH. WAVES
1 FOOT OR LESS.
.SUNDAY...NORTH WINDS 10 KNOTS OR LESS INCREASING TO 10 TO
15 KNOTS. WAVES 2 FEET OR LESS.
.MONDAY...NORTH WINDS 15 TO 20 KNOTS BECOMING EAST 5 TO 15 KNOTS.
WAVES 1 TO 3 FEET SUBSIDING TO 1 FOOT OR LESS.
.TUESDAY...SOUTHEAST WINDS 10 TO 15 KNOTS BECOMING SOUTH. WAVES
2 FEET OR LESS.

WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.

$$

LOZ061-210915-
MAFOR 2103/
ONTARIO WEST 1/2 11226 11400 11610 12510 12610 11620. SCATTERED
THUNDERSTORMS LATE THIS EVENING...THEN A CHANCE OF SHOWERS
OVERNIGHT. WAVES 3 TO 6 FEET SUBSIDING TO 1 TO 3 FEET OVERNIGHT.
WAVES 2 FEET OR LESS BUILDING TO 2 TO 4 FEET FRIDAY. WAVES 2 TO 4
FEET FRIDAY EVENING.

ONTARIO EAST 1/2 11226 11320 12510 13610 11620. SCATTERED
THUNDERSTORMS OVERNIGHT. WAVES 3 TO 5 FEET SUBSIDING TO 2 FEET OR
LESS OVERNIGHT. WAVES 2 FEET OR LESS BUILDING TO 2 TO 4 FEET
FRIDAY. WAVES 2 TO 4 FEET FRIDAY EVENING.

$$



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