National Weather Service United States Department of Commerce

Enhanced Risk for Severe Thunderstorms Across the Upper Midwest; Flash Flooding Possible from the Upper Midwest to Southern Plains and Desert Southwest Through Friday

Portions of the Upper Midwest will see an increased threat for severe thunderstorms through this evening, with a few strong tornadoes possible. The same region remains on alert for additional flash flood concerns. Heavy rainfall may lead to flash flooding across the Desert Southwest today, and Southern Plains by Friday. Finally, Major-to-record river flooding continues across the Carolinas. Read More >

 

 

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
 
1030 AM EDT Thu Sep 20 2018 The water temperature off Buffalo is 72 degrees.
 

1030 AM EDT Thu Sep 20 2018 The water temperature off Rochester is 65 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 202052
NSHBUF

Nearshore Marine Forecast
National Weather Service Buffalo NY
452 PM EDT Thu Sep 20 2018

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.

LEZ020-210330-
Upper Niagara River and Buffalo Harbor-
452 PM EDT Thu Sep 20 2018

...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH
FRIDAY EVENING...

.TONIGHT...East winds 10 knots or less becoming south and
increasing to 15 to 20 knots after midnight. Some evening
sprinkles otherwise mostly cloudy.
.FRIDAY...South winds to 30 knots becoming southwest. Partly to
mostly sunny.
.FRIDAY NIGHT...Southwest winds 15 to 25 knots becoming northwest
and diminishing to 10 to 15 knots. Showers likely with scattered
evening thunderstorms.
.SATURDAY...North winds 10 knots or less becoming northeast.
Becoming partly sunny.
.SATURDAY NIGHT...Light and variable winds. Clear.
.SUNDAY...Southeast winds 10 knots or less. Mostly sunny.
.MONDAY...Southeast winds 10 to 15 knots. A chance of showers
Monday night.
.TUESDAY...South winds 10 to 15 knots. A chance of showers.

Winds and waves higher in and near thunderstorms.

The water temperature off Buffalo is 72 degrees.

$$

LOZ030-210330-
Lower Niagara River-
452 PM EDT Thu Sep 20 2018

...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH
FRIDAY EVENING...

.TONIGHT...East winds 15 to 20 knots becoming south. Some
sprinkles early, then a chance of steadier showers late.
.FRIDAY...South winds 15 to 25 knots becoming southwest to
30 knots. Partly to mostly sunny.
.FRIDAY NIGHT...Southwest winds 15 to 25 knots becoming
northwest. Showers and scattered thunderstorms in the evening.
Some thunderstorms may produce gusty winds.
.SATURDAY...North winds 10 to 15 knots becoming northeast.
Becoming partly sunny.
.SATURDAY NIGHT...Light and variable winds. Mainly clear.
.SUNDAY...Light and variable winds. Mostly sunny.
.MONDAY...Southeast winds 10 to 15 knots. A chance of showers
Monday night.
.TUESDAY...South winds 10 to 15 knots. A chance of showers.

Winds and waves higher in and near thunderstorms.

$$

LEZ040-041-210330-
Buffalo to Ripley along Lake Erie-
452 PM EDT Thu Sep 20 2018

...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT FRIDAY THROUGH
SATURDAY MORNING...

.TONIGHT...East winds 10 to 15 knots becoming south 15 to
20 knots. Some evening sprinkles otherwise partly to mostly
cloudy. Waves 1 to 3 feet.
.FRIDAY...South winds 20 to 25 knots becoming southwest.
Scattered showers in the afternoon. Waves building to 3 to 6
feet. Waves occasionally around 7 feet.
.FRIDAY NIGHT...Southwest winds 15 to 25 knots becoming
northwest. Showers and scattered thunderstorms in the evening.
Some thunderstorms may produce gusty winds. Waves 4 to 7 feet.
Waves occasionally around 9 feet.
.SATURDAY...North winds 15 to 20 knots becoming northeast. Mostly
Becoming partly sunny. Waves 2 to 4 feet.
.SATURDAY NIGHT...Northeast winds 5 to 10 knots. Mainly clear.
Waves 1 foot or less.
.SUNDAY...East winds 10 to 15 knots. Sunny. Waves 2 feet or less.
.MONDAY...Southeast winds 10 to 15 knots. A chance of showers
Monday night. Waves 2 feet or less.
.TUESDAY...South winds 15 to 25 knots. A chance of showers. Waves
1 to 3 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ042-210330-
Niagara River to Hamlin Beach along Lake Ontario-
452 PM EDT Thu Sep 20 2018

...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH
SATURDAY AFTERNOON...

.TONIGHT...East winds 15 to 20 knots becoming south. Some sprinkles
early, then a chance of steadier showers from late evening on.
Waves 1 to 3 feet.
.FRIDAY...South winds 15 to 25 knots becoming southwest to
30 knots. A chance of showers in the morning. Waves 1 to 3 feet
building to 3 to 6 feet. Waves occasionally around 7 feet.
.FRIDAY NIGHT...Southwest winds to 30 knots becoming northwest.
Showers and scattered thunderstorms in the evening, then just
scattered showers overnight. Some thunderstorms may produce gusty
winds. Waves building to 6 to 10 feet. Waves occasionally around
13 feet.
.SATURDAY...North winds 15 to 20 knots becoming east. Partly to
mostly sunny. Waves 3 to 6 feet subsiding to 1 to 2 feet.
.SATURDAY NIGHT...Southeast winds less than 10 knots becoming
southwest. Mainly clear. Waves 1 foot or less.
.SUNDAY...Southeast winds 10 to 15 knots. Mostly sunny. Waves 2
feet or less.
.MONDAY...Southeast winds 10 to 15 knots. A chance of showers
Monday night. Waves 1 to 3 feet.
.TUESDAY...South winds 15 to 20 knots. A chance of showers. Waves
2 feet or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ043-210330-
Hamlin Beach to Sodus Bay along Lake Ontario
including Irondequoit Bay-
452 PM EDT Thu Sep 20 2018

...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH
SATURDAY AFTERNOON...

.TONIGHT...East winds 15 to 20 knots becoming south. Some sprinkles
this evening, then a chance of steadier showers after midnight.
Waves 1 to 3 feet.
.FRIDAY...South winds 15 to 25 knots becoming southwest. A chance
of showers. Waves building to 3 to 5 feet. Waves occasionally
around 6 feet.
.FRIDAY NIGHT...Southwest winds to 30 knots becoming northwest.
Showers and scattered thunderstorms in the evening, then just
scattered showers overnight. Some thunderstorms may produce gusty
winds. Waves building to 8 to 11 feet. Waves occasionally around
14 feet.
.SATURDAY...North winds 15 to 20 knots. Becoming mostly sunny.
Waves 5 to 8 feet. Waves occasionally around 10 feet.
.SATURDAY NIGHT...Northwest winds less than 10 knots. Mainly
clear. Waves 2 feet or less.
.SUNDAY...East winds 5 to 10 knots. Mostly sunny. Waves 2 feet or
less.
.MONDAY...Southeast winds 10 to 15 knots. A chance of showers
Monday night. Waves 1 to 3 feet.
.TUESDAY...South winds 15 to 20 knots. A chance of showers. Waves
2 feet or less.

Winds and waves higher in and near thunderstorms.

The water temperature off Rochester is 65 degrees.

$$

LOZ044-210330-
Sodus Bay to Mexico Bay along Lake Ontario-
452 PM EDT Thu Sep 20 2018

...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH
SATURDAY AFTERNOON...

.TONIGHT...East winds 10 to 15 knots becoming south 15 to
20 knots. Sprinkles this evening, then a chance of some steadier
showers after midnight. Waves 2 feet or less.
.FRIDAY...South winds 20 to 25 knots. A chance of showers. Waves
building to 2 to 4 feet...but notably higher well offshore.
.FRIDAY NIGHT...South winds to 30 knots becoming northwest.
Showers and scattered thunderstorms in the evening, then just
scattered showers overnight. Some thunderstorms may produce gusty
winds. Waves building to 9 to 12 feet. Waves occasionally around
15 feet.
.SATURDAY...North winds 15 to 20 knots. Becoming mostly sunny.
Waves 6 to 9 feet. Waves occasionally around 11 feet.
.SATURDAY NIGHT...North winds 10 knots or less. Mainly clear.
Waves 2 feet or less.
.SUNDAY...East winds 10 knots or less. Mostly sunny. Waves 1 foot
or less.
.MONDAY...Southeast winds 10 to 15 knots. A chance of showers
Monday night. Waves 2 feet or less.
.TUESDAY...South winds 15 to 20 knots. A chance of showers. Waves
2 feet or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ045-210330-
Mexico Bay to the Saint Lawrence River along Lake Ontario-
452 PM EDT Thu Sep 20 2018

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM EDT FRIDAY THROUGH
SATURDAY MORNING...

.TONIGHT...East winds 10 to 15 knots becoming south 15 to
20 knots. Some sprinkles early, then showers becoming likely
after midnight. Waves 2 feet or less building to 2 to 4 feet.
.FRIDAY...South winds to 30 knots. Showers likely in the morning,
then scattered showers in the afternoon. Waves 3 to 6 feet
building to 4 to 7 feet. Waves occasionally around 9 feet.
.FRIDAY NIGHT...South winds to 30 knots becoming northwest.
Showers and scattered thunderstorms in the evening. Some
thunderstorms may produce gusty winds. Waves building to 8 to 11
feet. Waves occasionally around 14 feet.
.SATURDAY...North winds 15 to 20 knots. Partly to mostly sunny.
Waves 5 to 8 feet. Waves occasionally around 10 feet.
.SATURDAY NIGHT...North winds less than 10 knots. Mainly clear.
Waves 1 foot or less.
.SUNDAY...Northeast winds 10 knots or less. Mostly sunny. Waves 1
foot or less.
.MONDAY...Southeast winds 10 to 15 knots. A chance of showers
Monday night. Waves 1 to 3 feet.
.TUESDAY...South winds 15 to 25 knots. A chance of showers. Waves
1 to 3 feet.

Winds and waves higher in and near thunderstorms.

$$