Great Lakes Forecast
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387
FZUS61 KBUF 160240
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
940 PM EST Wed Nov 15 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 near the Michigan Straits drag a cold
front across the lake overnight. A secondary cold front will
cross the lake on Thursday as an expansive 30.4 high builds across
the Upper Great Lakes. This high will then build across the lake
Thursday night and Friday, before a deepening storm tracks just to
the west of the lake during the weekend.

LOZ062-161015-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
940 PM EST Wed Nov 15 2017

.OVERNIGHT...South winds 15 to 25 knots becoming southwest.
Showers. Waves 3 to 6 feet.
.THURSDAY...West winds to 30 knots becoming northwest. A chance
of showers from late morning on. Waves 5 to 8 feet building to
6 to 10 feet. Waves occasionally around 13 feet.
.THURSDAY NIGHT...Northwest winds to 30 knots diminishing to
15 to 25 knots. A chance of rain showers in the evening. Waves
7 to 10 feet subsiding to 5 to 8 feet. Waves occasionally around
13 feet.
.FRIDAY...Northwest winds 15 to 20 knots becoming southwest 5 to
15 knots. Waves 3 to 6 feet subsiding to 1 to 3 feet.
.FRIDAY NIGHT...South winds 5 to 15 knots becoming southeast. A
chance of rain showers in the evening, then rain overnight. Waves
1 to 2 feet.
.SATURDAY...South winds 15 to 20 knots becoming northwest and
increasing to 45 knot gales. Rain during the day, then showers
Saturday night. Waves 2 to 4 feet building to 12 to 16 feet.
Waves occasionally around 20 feet.
.SUNDAY...Northwest gales to 40 knots diminishing to 15 to
20 knots. Lake effect snow and rain showers likely during the
day, then lake effect snow showers likely Sunday night. Waves
10 to 14 feet subsiding to 4 to 7 feet. Waves occasionally around
18 feet.
.MONDAY...West winds 15 to 20 knots becoming southwest. Lake
effect snow showers likely during the day, then a chance of snow
showers Monday night. Waves 3 to 6 feet.

$$

LOZ063>065-161015-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
940 PM EST Wed Nov 15 2017

.OVERNIGHT...South winds to 30 knots. Showers, then a
chance of showers late. Waves 4 to 7 feet building to 6 to
9 feet. Waves occasionally around 11 feet.
.THURSDAY...Southwest winds 15 to 25 knots becoming west to
30 knots. Showers. Waves 5 to 8 feet building to 7 to 11 feet.
Waves occasionally around 14 feet.
.THURSDAY NIGHT...Northwest winds to 30 knots. Rain showers
likely in the evening, then a chance of rain and snow showers
overnight. Waves 8 to 12 feet subsiding to 7 to 10 feet. Waves
occasionally around 15 feet.
.FRIDAY...Northwest winds 15 to 25 knots becoming west and
diminishing to 5 to 15 knots. Waves 5 to 8 feet subsiding to 1 to
3 feet. Waves occasionally around 10 feet.
.FRIDAY NIGHT...Southwest winds 10 knots or less becoming
southeast 10 to 15 knots. Rain overnight. Waves 1 to 3 feet.
.SATURDAY...South winds 15 to 25 knots becoming west and
increasing to 45 knot gales. Rain during the day, then rain
showers Saturday night. Waves 3 to 6 feet building to 15 to
19 feet. Waves occasionally around 24 feet.
.SUNDAY...Northwest gales to 40 knots diminishing to 15 to
25 knots. Lake effect rain and snow showers likely during the
day, then occasional lake effect snow showers Sunday night. Waves
14 to 18 feet subsiding to 5 to 8 feet. Waves occasionally around
23 feet.
.MONDAY...Northwest winds 15 to 20 knots becoming southwest. Lake
effect snow showers likely. Waves 4 to 7 feet subsiding to 3 to
6 feet. Waves occasionally around 9 feet.

$$

LOZ061-161015-
MAFOR 1604/
ONTARIO WEST 1/2 11430 12530 11630 12640 12740. A chance of
showers overnight, Thursday afternoon, and Thursday evening.
Waves 3 to 6 feet overnight. Waves 5 to 8 feet building to 7 to
10 feet, and occasionally around 13 feet Thursday. Waves 7 to 11
feet, and occasionally around 14 feet Thursday evening.

ONTARIO EAST 1/2 11446 11440 12530 11546 11646 11746 11740. A
chance of showers Thursday morning and Thursday evening. Waves 4
to 7 feet building to 6 to 9 feet, and occasionally around 11
feet overnight. Waves 5 to 8 feet building to 7 to 11 feet, and
occasionally around 14 feet Thursday. Waves 8 to 12 feet, and
occasionally around 15 feet Thursday evening.

$$



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