Great Lakes Forecast
Issued by NWS

Home | Current Version | Previous Version | Graphics & Text | 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 160554
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
154 AM EDT Mon Apr 16 2018

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 low near Lake Erie this early morning will push an occluded
front across the Lake today, and then deepen to 29.3 inches as it
tracks near Lake Ontario this afternoon before tracking towards
Georgian Bay tonight. A secondary low at 29.5 inches and forming
on this occluded front will drift across New England on Tuesday.
Another 29.2 inch low will enter the Great Lakes region late
Wednesday, sending a warm front across the region Wednesday night,
then followed by a cold front Thursday.

LOZ062-063-160930-
Lake Ontario open waters from the Niagara River to Sodus Bay-
154 AM EDT Mon Apr 16 2018

.OVERNIGHT...East winds to 30 knots. Rain. Patchy fog late. Waves
14 to 18 feet subsiding to 12 to 16 feet. Waves occasionally
around 23 feet.
.MONDAY...East winds to 30 knots becoming southwest 15 to
25 knots. Patchy fog early. Rain with a chance of thunderstorms.
Waves 8 to 11 feet subsiding to 1 to 3 feet. Waves occasionally
around 14 feet.
.MONDAY NIGHT...Southwest winds 15 to 25 knots becoming west.
Rain showers likely. Waves 1 to 3 feet building to 4 to 7 feet.
Waves occasionally around 9 feet.
.TUESDAY...West winds 15 to 25 knots. Rain and snow showers.
Waves 5 to 9 feet building to 7 to 10 feet. Waves occasionally
around 13 feet.
.TUESDAY NIGHT...West winds 15 to 20 knots. A chance of rain and
snow showers. Waves 6 to 9 feet. Waves occasionally around
11 feet.
.WEDNESDAY...West winds 15 to 20 knots becoming east 5 to
15 knots. A chance of rain showers during the day, then rain and
snow showers likely Wednesday night. Waves 4 to 7 feet subsiding
to 2 feet or less. Waves occasionally around 9 feet.
.THURSDAY...North winds 5 to 15 knots becoming northwest 15 to
20 knots. Rain likely during the day, then a chance of rain
showers Thursday night. Waves 2 feet or less.
.FRIDAY...Northwest winds 15 to 20 knots becoming north 10 to
15 knots. Waves 1 to 3 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ064-065-160930-
Lake Ontario open waters from Sodus Bay to the Saint Lawrence
River-
154 AM EDT Mon Apr 16 2018

.OVERNIGHT...East winds to 30 knots. Rain. Waves 5 to
8 feet. Waves occasionally around 10 feet.
.MONDAY...East winds to 30 knots becoming southwest and
diminishing to 10 to 15 knots in the afternoon. Rain with a
chance of thunderstorms. Waves 5 to 8 feet subsiding to 2 feet or
less. Waves occasionally around 10 feet.
.MONDAY NIGHT...West winds 15 to 25 knots becoming southwest.
Rain in the evening, then rain showers likely overnight. Waves
2 feet or less building to 4 to 7 feet. Waves occasionally around
9 feet.
.TUESDAY...Southwest winds 15 to 25 knots becoming west. Rain and
snow showers. Waves 4 to 7 feet building to 6 to 10 feet. Waves
occasionally around 13 feet.
.TUESDAY NIGHT...West winds 15 to 20 knots. Rain and snow showers
likely. Waves 6 to 9 feet. Waves occasionally around 11 feet.
.WEDNESDAY...West winds 15 to 20 knots becoming southeast 5 to
15 knots. A chance of rain and snow showers. Waves 5 to 8 feet
subsiding to 2 feet or less. Waves occasionally around 10 feet.
.THURSDAY...South winds 5 to 15 knots becoming northwest 15 to
20 knots. Rain likely during the day, then rain showers likely
Thursday night. Waves 2 feet or less.
.FRIDAY...Northwest winds 15 to 20 knots diminishing to 10 to
15 knots. A chance of rain showers during the day. Waves 1 to
3 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-160930-
MAFOR 1603/
ONTARIO WEST 1/2 12256 12246 11326 11526 11536 11530. Chance of
thunderstorms Monday. Waves 14 to 18 feet subsiding to 12 to 16
feet, and occasionally around 23 feet overnight. Waves 8 to 11
feet subsiding to 1 to 3 feet, and occasionally around 14 feet
Monday. Waves 1 to 3 feet building to 3 to 5 feet Monday evening.

ONTARIO EAST 1/2 11240 13246 11336 11416 11636 11530. Chance of
rain late this evening. Chance of thunderstorms Monday. Waves 9
to 13 feet subsiding to 8 to 11 feet, and occasionally around 16
feet overnight. Waves 7 to 10 feet subsiding to 2 feet or less,
and occasionally around 13 feet Monday. Waves 1 to 3 feet
building to 2 to 4 feet Monday evening.

$$



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