Wintry Weather in the Northern Tier; Fire Weather Threats in Southern California

Two Canadian systems will produce heavy snow downwind of Great Lakes Erie and Ontario, and a wintry mix in the Mississippi and Ohio Valleys. Snow, heavy in places, will spread across the Rockies and 4-Corners area through early this week. A developing system in southern California may produce high winds and critical fire weather threats, and, areas of heavy rain early this week. Read More >

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Lake Erie

The reported Lake Erie water temperature is taken at the Buffalo Water Treatment Plant located on Lake Erie at the entrance to the Niagara River. The reading is taken at a depth of 30 feet. This data is unofficial.

Lake Ontario

The reported Lake Ontario water temperature is taken at the Monroe County Water Treatment Plant near Greece, N.Y. The temperatures is measured at the intake pipes about 1500 feet offshore at a approximate depth of 35 feet. The Lake Ontario temperature occasionally may not be representative of the surface temperature due to upwelling. This process, more common during the summer months, brings colder water from the deeper parts of the lake toward the surface near the temperature sensor. The surface water may be significantly warmer. This data is unofficial.

Latest Lake Temperatures

943 AM EST Sun Jan 17 2021 The water temperature off Buffalo is 36 degrees.

943 AM EST Sun Jan 17 2021 The water temperature off Rochester is 38 degrees.

Monthly Lake Erie Temperatures
January	February	March	April	May	June	July	August	September	October	November	December

Historical Lake Erie Temperatures (Unofficial Normals and Extremes)

The daily lake temperatures for Lake Erie off Buffalo and for Lake Ontario off Rochester are included in the Nearshore Marine Forecast.

Click the link for previous versions of the Nearshore Marine Forecast.

NearShore Marine Forecast

000
FZUS51 KBUF 172041
NSHBUF

Nearshore Marine Forecast
National Weather Service Buffalo NY
341 PM EST Sun Jan 17 2021

For waters within five nautical miles of shore

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.

LEZ020-180415-
Upper Niagara River and Buffalo Harbor-
341 PM EST Sun Jan 17 2021

.TONIGHT...West winds 5 to 10 knots becoming light and variable.
A chance of snow showers.
.MONDAY...West winds 10 knots or less. A chance of snow showers
in the morning, then lake effect snow showers likely in the
afternoon.
.MONDAY NIGHT...West winds 5 to 10 knots. A chance of snow
showers.
.TUESDAY...West winds 10 to 15 knots. Snow showers likely in the
morning, then a chance of snow showers in the afternoon.
.TUESDAY NIGHT...West winds 10 to 15 knots. A chance of snow
showers.
.WEDNESDAY...West winds 10 to 15 knots becoming southwest. A
chance of snow showers.
.THURSDAY...Southwest winds 10 to 15 knots becoming west. A
chance of snow and rain showers.
.FRIDAY...West winds 10 to 15 knots becoming northwest. Mostly
cloudy.

The water temperature off Buffalo is 36 degrees.

$$

LOZ030-180415-
Lower Niagara River-
341 PM EST Sun Jan 17 2021

.TONIGHT...West winds 10 knots or less. A chance of snow showers
from late evening on.
.MONDAY...West winds 10 knots or less. A chance of snow showers.
.MONDAY NIGHT...West winds 5 to 10 knots. Snow showers likely in
the evening, then a chance of snow showers overnight.
.TUESDAY...Southwest winds 10 to 15 knots becoming west 15 to
20 knots. A chance of snow showers.
.TUESDAY NIGHT...West winds 15 to 20 knots diminishing to 10 to
15 knots. A chance of snow showers.
.WEDNESDAY...West winds 10 to 15 knots becoming southwest. Snow
showers likely during the day, then a chance of snow showers
Wednesday night.
.THURSDAY...Southwest winds 10 to 15 knots becoming west. A
chance of snow and rain showers.
.FRIDAY...West winds 10 to 15 knots becoming northwest. Mostly
cloudy.

$$

LEZ040-041-180415-
Buffalo to Ripley along Lake Erie-
341 PM EST Sun Jan 17 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EST THIS EVENING...

.TONIGHT...Southwest winds 15 to 20 knots becoming northwest
10 to 15 knots. Lake effect snow showers. Waves 3 to 5 feet
subsiding to 1 to 3 feet. Waves occasionally around 6 feet.
.MONDAY...Northwest winds 15 to 20 knots becoming west. Lake
effect snow showers. Waves 1 to 3 feet building to 2 to 4 feet.
.MONDAY NIGHT...West winds 15 to 20 knots. Lake effect snow
showers. Waves 2 to 4 feet building to 3 to 6 feet. Waves
occasionally around 7 feet.
.TUESDAY...West winds 15 to 25 knots. Lake effect snow showers
likely. Waves 3 to 6 feet building to 4 to 7 feet. Waves
occasionally around 9 feet.
.TUESDAY NIGHT...West winds 15 to 25 knots. Snow showers. Waves
4 to 7 feet. Waves occasionally around 9 feet.
.WEDNESDAY...West winds 15 to 20 knots becoming southwest. Snow
showers likely during the day, then a chance of snow showers
Wednesday night. Waves 3 to 6 feet subsiding to 1 to 3 feet.
Waves occasionally around 7 feet.
.THURSDAY...Southwest winds 15 to 20 knots becoming west. A
chance of rain and snow showers. Waves 2 to 4 feet building to
3 to 5 feet. Waves occasionally around 6 feet.
.FRIDAY...West winds 15 to 20 knots becoming northwest 10 to
15 knots. Mostly cloudy. Waves 2 to 4 feet subsiding to 1 to
3 feet.

$$

LOZ042-180415-
Niagara River to Hamlin Beach along Lake Ontario-
341 PM EST Sun Jan 17 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM EST THIS EVENING...

.TONIGHT...West winds 5 to 15 knots becoming northwest. A chance
of snow showers. Waves 3 to 5 feet subsiding to 1 to 3 feet.
Waves occasionally around 6 feet.
.MONDAY...Northwest winds 5 to 15 knots becoming west. A chance
of snow showers. Waves 1 to 3 feet.
.MONDAY NIGHT...Northwest winds 5 to 15 knots becoming west. A
chance of snow showers in the evening, then snow showers likely
overnight. Waves 1 to 3 feet.
.TUESDAY...Southwest winds 10 to 15 knots becoming west 15 to
20 knots. Snow showers likely. Waves 1 to 3 feet building to 3 to
6 feet. Waves occasionally around 7 feet.
.TUESDAY NIGHT...West winds 15 to 20 knots. A chance of snow
showers in the evening, then snow showers likely overnight. Waves
3 to 6 feet. Waves occasionally around 7 feet.
.WEDNESDAY...Northwest winds 15 to 20 knots becoming southwest
10 to 15 knots. Snow showers likely during the day, then a chance
of snow showers Wednesday night. Waves 3 to 6 feet subsiding to
1 to 3 feet. Waves occasionally around 7 feet.
.THURSDAY...Southwest winds 15 to 20 knots becoming west. Rain
and snow showers likely during the day, then a chance of rain and
snow showers Thursday night. Waves 1 to 3 feet building to 2 to
4 feet.
.FRIDAY...West winds 15 to 20 knots becoming northwest 10 to
15 knots. Mostly cloudy. Waves 2 to 4 feet.

$$

LOZ043-044-180415-
Hamlin Beach to Mexico Bay along Lake Ontario
including Irondequoit Bay-
341 PM EST Sun Jan 17 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EST MONDAY...

.TONIGHT...West winds 15 to 20 knots becoming northwest 5 to
15 knots. Snow showers likely this evening, then a chance of snow
showers after midnight. Waves 5 to 8 feet subsiding to 2 to
4 feet. Waves occasionally around 10 feet.
.MONDAY...Northwest winds 10 to 15 knots becoming west 15 to
20 knots. A chance of snow showers. Waves 1 to 3 feet building to
2 to 4 feet.
.MONDAY NIGHT...West winds 5 to 15 knots. A chance of snow
showers. Waves 2 to 4 feet subsiding to 1 to 3 feet.
.TUESDAY...West winds 5 to 15 knots increasing to 15 to 20 knots.
Snow showers likely. Waves 1 to 2 feet building to 3 to 6 feet.
Waves occasionally around 7 feet.
.TUESDAY NIGHT...West winds 15 to 20 knots. A chance of snow
showers in the evening, then snow showers overnight. Waves 4 to
7 feet. Waves occasionally around 9 feet.
.WEDNESDAY...Northwest winds 15 to 20 knots becoming south 5 to
15 knots. Snow showers likely during the day. Waves 4 to 7 feet
subsiding to 2 feet or less. Waves occasionally around 9 feet.
.THURSDAY...Southwest winds 15 to 20 knots becoming west. Snow
and rain showers likely. Waves 1 to 3 feet building to 3 to
5 feet. Waves occasionally around 6 feet.
.FRIDAY...West winds 15 to 20 knots becoming northwest 10 to
15 knots. A chance of snow and rain showers during the day, then
a chance of snow showers Friday night. Waves 3 to 5 feet
subsiding to 2 to 4 feet. Waves occasionally around 6 feet.

The water temperature off Rochester is 38 degrees.

$$

LOZ045-180415-
Mexico Bay to the Saint Lawrence River along Lake Ontario-
341 PM EST Sun Jan 17 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EST THIS EVENING...

.TONIGHT...West winds 15 to 20 knots becoming northwest 5 to
15 knots. A chance of snow showers. Waves 5 to 8 feet subsiding
to 2 to 4 feet. Waves occasionally around 10 feet.
.MONDAY...Northwest winds 5 to 15 knots becoming west. Cloudy in
the morning, then becoming partly sunny. Waves 1 to 3 feet.
.MONDAY NIGHT...Northwest winds 5 to 10 knots becoming light and
variable. A chance of snow showers overnight. Waves 2 feet or
less.
.TUESDAY...Southeast winds 10 knots or less becoming west and
increasing to 15 to 20 knots in the afternoon. Snow showers
likely. Waves 2 feet or less building to 2 to 4 feet.
.TUESDAY NIGHT...West winds 15 to 20 knots. Snow showers. Waves
3 to 6 feet building to 4 to 7 feet, then subsiding to 3 to
6 feet. Waves occasionally around 9 feet.
.WEDNESDAY...Northwest winds 15 to 20 knots becoming south 5 to
15 knots. A chance of snow showers during the day. Waves 3 to
6 feet subsiding to 1 to 3 feet. Waves occasionally around
7 feet.
.THURSDAY...South winds 15 to 20 knots becoming west. Snow and
rain showers likely. Waves 1 to 3 feet building to 3 to 5 feet.
Waves occasionally around 6 feet.
.FRIDAY...West winds 10 to 15 knots becoming northwest. A chance
of snow showers. Waves 2 to 4 feet building to 3 to 5 feet, then
subsiding to 2 to 4 feet. Waves occasionally around 6 feet.

$$

Radar