Great Lakes Forecast
Issued by NWS

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531
FZUS61 KBUF 201437
GLFLO

GLFLO

OPEN LAKE FORECAST FOR LAKE ONTARIO
NATIONAL WEATHER SERVICE BUFFALO NY
1030 AM EDT THU APR 20 2017

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE ONTARIO

.SYNOPSIS...A 29.8 INCH LOW NEARING SOUTHERN LAKE MICHIGAN THIS LATE
MORNING WILL PUSH EAST ACROSS THE LAKE, AND THE STATE OF MICHIGAN
THIS AFTERNOON. THE LOW WILL THEN MAKE ITS WAY ACROSS LAKE ONTARIO
TONIGHT. THE STORM SYSTEM WILL SLOWLY MOVE NORTH TO 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.

LOZ062-063-202100-
LAKE ONTARIO OPEN WATERS FROM THE NIAGARA RIVER TO SODUS BAY-
1030 AM EDT THU APR 20 2017

.REST OF TODAY...EAST WINDS 15 TO 25 KNOTS BECOMING NORTHEAST. A
CHANCE OF SHOWERS LATE THIS MORNING...THEN SHOWERS LIKELY WITH A
CHANCE OF THUNDERSTORMS THIS AFTERNOON. WAVES 3 TO 6 FEET.
.TONIGHT...EAST WINDS 15 TO 25 KNOTS BECOMING SOUTHWEST AND
DIMINISHING TO 10 TO 15 KNOTS. SHOWERS WITH A CHANCE OF
THUNDERSTORMS. WAVES 3 TO 6 FEET SUBSIDING TO 1 TO 2 FEET.
.FRIDAY...WEST WINDS 15 TO 20 KNOTS. A CHANCE OF SHOWERS IN THE
MORNING. WAVES 1 TO 3 FEET BUILDING TO 3 TO 5 FEET.
.FRIDAY NIGHT...WEST WINDS 15 TO 20 KNOTS. WAVES 3 TO 5 FEET
SUBSIDING TO 2 TO 4 FEET.
.SATURDAY...NORTHWEST WINDS 5 TO 15 KNOTS BECOMING NORTH. WAVES
2 TO 4 FEET SUBSIDING TO 2 FEET OR LESS.
.SUNDAY...NORTHEAST WINDS 10 KNOTS OR LESS BECOMING NORTH 10 TO
15 KNOTS. WAVES 2 FEET OR LESS.
.MONDAY...NORTHEAST WINDS 10 TO 15 KNOTS BECOMING EAST. WAVES
1 TO 3 FEET.

WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.

$$

LOZ064-065-202100-
LAKE ONTARIO OPEN WATERS FROM SODUS BAY TO THE SAINT LAWRENCE
RIVER-
1030 AM EDT THU APR 20 2017

.REST OF TODAY...NORTHEAST WINDS 10 TO 15 KNOTS INCREASING TO
15 TO 20 KNOTS. A CHANCE OF SHOWERS LATE. WAVES 2 TO 4 FEET
SUBSIDING TO 1 TO 3 FEET.
.TONIGHT...NORTHEAST WINDS 15 TO 20 KNOTS BECOMING SOUTH. SHOWERS
WITH A CHANCE OF THUNDERSTORMS. WAVES 2 TO 4 FEET SUBSIDING TO
1 TO 3 FEET.
.FRIDAY...SOUTHWEST WINDS 15 TO 20 KNOTS. SHOWERS LIKELY IN THE
MORNING. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET.
.FRIDAY NIGHT...WEST WINDS 15 TO 20 KNOTS. WAVES 3 TO 5 FEET
SUBSIDING TO 2 TO 4 FEET.
.SATURDAY...NORTHWEST WINDS 5 TO 15 KNOTS BECOMING NORTH. WAVES
2 TO 4 FEET SUBSIDING TO 2 FEET OR LESS.
.SUNDAY...NORTH WINDS 10 KNOTS OR LESS INCREASING TO 10 TO
15 KNOTS. WAVES 2 FEET OR LESS.
.MONDAY...NORTH WINDS 5 TO 15 KNOTS BECOMING EAST. WAVES 1 TO
3 FEET SUBSIDING TO 1 FOOT OR LESS.

WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.

$$

LOZ061-202000-
MAFOR 2015/
ONTARIO WEST 1/2 11230 13236 11226 11400 11610 11620. A CHANCE OF
SHOWERS LATE THIS MORNING...THEN A CHANCE OF THUNDERSTORMS THIS
AFTERNOON. A CHANCE OF THUNDERSTORMS IN THE EVENING...THEN A
CHANCE OF SHOWERS AND THUNDERSTORMS OVERNIGHT. WAVES 3 TO 6 FEET
THIS AFTERNOON. WAVES 3 TO 6 FEET SUBSIDING TO 1 TO 2 FEET
TONIGHT. WAVES 1 TO 3 FEET FRIDAY MORNING.

ONTARIO EAST 1/2 12120 11126 12226 11426 11516 11520. A CHANCE OF
THUNDERSTORMS TONIGHT. A CHANCE OF SHOWERS FRIDAY MORNING. WAVES
2 TO 4 FEET THIS AFTERNOON. WAVES 3 TO 5 FEET SUBSIDING TO 1 TO 3
FEET TONIGHT. WAVES 1 TO 3 FEET FRIDAY MORNING.

$$



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