Great Lakes Forecast
Issued by NWS

Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
FZUS61 KBUF 191330
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
930 AM EDT Sat Aug 19 2017

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 29.6 inch low will move slowly northeast across
Quebec this afternoon, eventually exiting across northern Quebec
tonight. A 30.1 inch high will then build into the Ohio Valley and
eastern Great Lakes Sunday and Monday. A cold front is then
forecast to cross the eastern Great Lakes Tuesday night.

LOZ062-192115-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
930 AM EDT Sat Aug 19 2017

.REST OF TODAY...West winds 15 to 20 knots. Waves 3 to 5 feet.
.TONIGHT...West winds 15 to 20 knots diminishing to 10 to
15 knots. Waves 3 to 5 feet subsiding to 2 to 4 feet.
.SUNDAY...West winds 10 to 15 knots becoming southwest. Waves
1 to 3 feet.
.SUNDAY NIGHT...Southwest winds 5 to 15 knots. Waves 1 to 2 feet.
.MONDAY...Southwest winds 5 to 10 knots. A chance of showers
Monday night. Waves 2 feet or less.
.TUESDAY...Southwest winds 10 to 15 knots becoming west 15 to
20 knots. A chance of showers and thunderstorms during the day...
then showers likely with a chance of thunderstorms Tuesday night.
Waves 1 to 3 feet.
.WEDNESDAY...Northwest winds 15 to 20 knots diminishing to 10 to
15 knots. Showers likely with a chance of thunderstorms during
the day...then a chance of showers Wednesday night. Waves 2 to
4 feet subsiding to 1 to 3 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-192115-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
930 AM EDT Sat Aug 19 2017

.REST OF TODAY...West winds 15 to 20 knots. Scattered showers
late this morning. Waves 3 to 5 feet.
.TONIGHT...West winds 15 to 20 knots diminishing to 10 to
15 knots. Scattered showers and thunderstorms late in the
evening. Waves 3 to 5 feet subsiding to 2 to 4 feet.
.SUNDAY...West winds 5 to 15 knots becoming southwest. Waves 2 to
4 feet subsiding to 1 to 2 feet.
.SUNDAY NIGHT...Southwest winds 5 to 15 knots. Waves 2 feet or
less.
.MONDAY...Southwest winds 5 to 10 knots. A chance of showers
Monday night. Waves 2 feet or less.
.TUESDAY...Southwest winds 10 to 15 knots becoming west 15 to
20 knots. A chance of showers and thunderstorms during the day...
then showers likely with a chance of thunderstorms Tuesday night.
Waves 1 to 3 feet building to 2 to 4 feet.
.WEDNESDAY...West winds 15 to 20 knots becoming northwest 10 to
15 knots. Showers likely with a chance of thunderstorms during
the day...then a chance of showers Wednesday night. Waves 2 to
4 feet subsiding to 1 to 3 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-192115-
MAFOR 1915/
ONTARIO WEST 1/2 14620 11620 12610 11500. Waves 3 to 5 feet this
afternoon. Waves 3 to 5 feet subsiding to 2 to 4 feet tonight.
Waves 1 to 3 feet Sunday morning.

ONTARIO EAST 1/2 15620 11610 11600. Scattered showers and
thunderstorms this evening. Waves 3 to 5 feet this afternoon.
Waves 3 to 5 feet subsiding to 2 to 4 feet tonight. Waves 2 to 4
feet Sunday morning.

$$



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.