Great Lakes Forecast
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
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 140838 RRA
GLFLO

GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
330 AM EST Tue Nov 14 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 30.4 inch high centered over the Ohio Valley will
build across Lake Ontario through today. A 29.6 inch low near Lake
Superior on Wednesday will drag a cold front across Lake Ontario
Wednesday night. A second cold front will cross the lake on Thursday
as an expansive 30.4 high will build across the Upper Great Lakes.
This high will gradually build across Lake Ontario Thursday night
and Friday. A deepening storm will then track just to the west of
the lake during the weekend.

LOZ062-141600-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
330 AM EST Tue Nov 14 2017

.TODAY...North winds less than 10 knots. A chance of lake effect
rain showers this morning. Waves 1 foot or less.
.TONIGHT...South winds 10 knots or less. Waves 2 feet or less.
.WEDNESDAY...South winds 10 to 15 knots becoming southeast 15 to
20 knots. Rain showers likely in the afternoon. Waves 1 to
3 feet.
.WEDNESDAY NIGHT...South winds 15 to 25 knots becoming southwest.
Showers in the evening. Waves 1 to 3 feet building to 3 to
6 feet.
.THURSDAY...West winds to 30 knots becoming north and diminishing
to 15 to 20 knots. A chance of rain showers. Waves 5 to 8 feet
subsiding to 3 to 6 feet. Waves occasionally around 10 feet.
.FRIDAY...North winds 5 to 15 knots becoming south 15 to
20 knots. Rain showers Friday night. Waves 2 to 4 feet.
.SATURDAY...South winds 15 to 20 knots becoming west and
increasing to 35 knot gales. Rain showers. Waves 2 to 4 feet
building to 10 to 13 feet. Waves occasionally around 16 feet.

$$

LOZ063>065-141600-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
330 AM EST Tue Nov 14 2017

.TODAY...Northeast winds 10 knots or less becoming northwest. A
chance of lake effect rain showers this morning. Waves 1 foot or
less.
.TONIGHT...Light and variable winds becoming south 5 to 10 knots.
Waves 2 feet or less.
.WEDNESDAY...South winds 10 to 15 knots becoming southeast 15 to
20 knots. Waves 1 to 3 feet building to 2 to 4 feet.
.WEDNESDAY NIGHT...South winds 15 to 25 knots becoming southwest.
Showers. Waves 3 to 6 feet building to 4 to 7 feet. Waves
occasionally around 9 feet.
.THURSDAY...West winds to 30 knots becoming north 15 to 25 knots.
Rain showers likely during the day, then a chance of rain showers
Thursday night. Waves 5 to 9 feet subsiding to 4 to 7 feet. Waves
occasionally around 11 feet.
.FRIDAY...North winds 10 to 15 knots becoming south and
increasing to 15 to 25 knots. Rain showers Friday night. Waves
3 to 6 feet subsiding to 3 to 5 feet.
.SATURDAY...South winds to 30 knots becoming west and increasing
to 35 knot gales. Rain showers. Waves 4 to 7 feet building to
10 to 15 feet. Waves occasionally around 19 feet.

$$

LOZ061-141600-
MAFOR 1410/
ONTARIO WEST 1/2 13100 14400 11400. A chance of lake effect
showers early this morning. Waves 2 feet or less.

ONTARIO EAST 1/2 12100 13800 11200 12400. Waves 2 feet or less.

$$



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