Great Lakes Forecast
Issued by NWS

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FZUS61 KBUF 201033
GLFLO

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

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE ONTARIO

.SYNOPSIS...A 29.7 INCH LOW OVER WISCONSIN THIS MORNING WILL PUSH
EAST ACROSS LOWER MICHIGAN THIS AFTERNOON...THEN WILL 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.

LOZ062-063-201500-
LAKE ONTARIO OPEN WATERS FROM THE NIAGARA RIVER TO SODUS BAY-
633 AM EDT THU APR 20 2017

.TODAY...NORTHEAST WINDS 15 TO 25 KNOTS. SHOWERS BECOMING LIKELY
THIS AFTERNOON WITH A CHANCE OF THUNDERSTORMS LATE. WAVES 2 TO 4
FEET BUILDING TO 3 TO 6 FEET.
.TONIGHT...EAST WINDS TO 30 KNOTS BECOMING SOUTHWEST AND
DIMINISHING TO 10 TO 15 KNOTS AFTER MIDNIGHT. SHOWERS WITH A
CHANCE OF THUNDERSTORMS...TAPERING OFF OVERNIGHT. WAVES 3 TO 6
FEET SUBSIDING TO 1 TO 2 FEET.
.FRIDAY...WEST WINDS 15 TO 20 KNOTS. A CHANCE OF MORNING SHOWERS.
WAVES BUILDING TO 3 TO 5 FEET.
.FRIDAY NIGHT...WEST WINDS 15 TO 20 KNOTS. WAVES 3 TO 5 FEET.
.SATURDAY...NORTHWEST WINDS 10 TO 15 KNOTS. WAVES SUBSIDING TO 1
TO 3 FEET.
.SUNDAY...NORTHEAST WINDS 10 KNOTS OR LESS. WAVES 2 FEET OR LESS.
.MONDAY...NORTHEAST WINDS 10 TO 15 KNOTS. WAVES 1 TO 3 FEET.

WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.

$$

LOZ064-065-201500-
LAKE ONTARIO OPEN WATERS FROM SODUS BAY TO THE SAINT LAWRENCE
RIVER-
633 AM EDT THU APR 20 2017

.TODAY...NORTHEAST WINDS 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 2 TO 4 FEET.
.FRIDAY NIGHT...WEST WINDS 15 TO 20 KNOTS. WAVES 3 TO 5 FEET.
.SATURDAY...NORTHWEST WINDS 10 TO 15 KNOTS. WAVES SUBSIDING TO 1
TO 3 FEET.
.SUNDAY...NORTH WINDS 10 TO 15 KNOTS. WAVES 2 FEET OR LESS.
.MONDAY...NORTHEAST WINDS 10 TO 15 KNOTS. WAVES 1 TO 3 FEET.

WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.

$$

LOZ061-201500-
MAFOR 2012 AMD/
ONTARIO WEST 1/2 11220 11230 13236 11226 11400. A CHANCE OF
THUNDERSTORMS THIS AFTERNOON AND EVENING...THEN A CHANCE OF
SHOWERS AND THUNDERSTORMS OVERNIGHT. WAVES 2 TO 4 FEET BUILDING TO
3 TO 6 FEET TODAY. WAVES 3 TO 6 FEET SUBSIDING TO 1 TO 2 FEET
TONIGHT.

ONTARIO EAST 1/2 13120 11136 11236 12326. A CHANCE OF
THUNDERSTORMS TONIGHT. WAVES 2 TO 4 FEET TODAY. WAVES 3 TO 5 FEET
SUBSIDING TO 1 TO 3 FEET TONIGHT.

$$

JJR/RSH



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