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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1003 pm edt tue sep 1 2026


slz022-024-020900-
saint lawrence river from cape vincent to saint regis
1003 pm edt tue sep 1 2026

.overnight...light and variable winds. patchy fog.

.wednesday...southeast winds 10 knots or less becoming south. a
chance of showers and thunderstorms early in the afternoon.
showers likely with a chance of thunderstorms late. 
.wednesday night...south winds 5 to 10 knots becoming southwest.
showers with a chance of thunderstorms. 
.thursday...southwest winds 10 knots or less becoming west.
showers likely in the morning, then a chance of showers in the
afternoon. 
.thursday night...west winds less than 10 knots. a chance of
showers in the evening. 
.friday...northwest winds less than 10 knots. becoming mainly
clear. 
.saturday...north winds 10 knots or less becoming northeast.
partly cloudy. 
.sunday...northeast winds less than 10 knots. becoming mainly
clear. 

winds and waves higher in and near thunderstorms.

$$

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glflo 
expires:202609020900;;749888

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt tue sep 1 2026

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 frontal boundary will move northeast across the lake 
as a warm front late tonight through wednesday morning. the front 
will then settle back south across the lake thursday. a 30.1 inch 
high over northwest ontario province friday will settle south into 
the lower great lakes saturday through sunday.


loz062-020900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt tue sep 1 2026

.overnight...east winds 10 knots or less becoming
southeast. a chance of showers and thunderstorms late. waves
1 foot or less. 
.wednesday...southeast winds 10 knots or less becoming southwest.
showers likely with a chance of thunderstorms in the morning,
then a chance of showers and thunderstorms in the afternoon.
waves 1 foot or less. 
.wednesday night...southwest winds 5 to 10 knots becoming west.
showers with a chance of thunderstorms. waves 1 foot or less. 
.thursday...west winds 5 to 10 knots. a chance of showers. waves
1 foot or less. 
.thursday night...west winds 5 to 10 knots becoming northwest.
waves 1 foot or less. 
.friday...northwest winds 10 knots or less becoming north. waves
1 foot or less. 
.saturday...north winds 10 knots or less becoming northeast.
waves 1 foot or less. 
.sunday...northeast winds 10 knots or less becoming southwest.
waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 020202
glflo 
expires:202609020900;;749889

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt tue sep 1 2026

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 frontal boundary will move northeast across the lake 
as a warm front late tonight through wednesday morning. the front 
will then settle back south across the lake thursday. a 30.1 inch 
high over northwest ontario province friday will settle south into 
the lower great lakes saturday through sunday.


loz063>065-020900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt tue sep 1 2026

.overnight...east winds 10 knots or less becoming
southeast. waves 1 foot or less. 
.wednesday...southeast winds 5 to 15 knots becoming south. a
chance of showers through early afternoon, then a chance of
showers and thunderstorms late. waves 2 feet or less. 
.wednesday night...south winds 10 to 15 knots becoming southwest.
showers with a chance of thunderstorms. waves 1 to 3 feet. 
.thursday...west winds 10 to 15 knots. showers likely in the
morning, then a chance of showers in the afternoon. waves 1 to
2 feet. 
.thursday night...west winds 5 to 10 knots becoming northwest.
waves 1 to 2 feet. 
.friday...northwest winds 5 to 10 knots becoming north. waves
1 foot or less. 
.saturday...north winds 5 to 10 knots becoming northeast. waves
2 feet or less. 
.sunday...northeast winds 10 knots or less becoming southwest.
waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake erie
national weather service cleveland oh
943 pm edt tue sep 1 2026

for waters beyond five nautical miles of shore on lake erie

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 stationary front will linger in the vicinity of lake erie
tonight as high pressure of 30.10 inches persists across the ohio
valley. low pressure 29.70 inches will move east through the 
upper great lakes on wednesday, extending a cold front into the 
area on thursday. this front will linger south of lake erie on 
friday as high pressure ridge 30.10 inches builds in from the 
north for the weekend.


lez061-167>169-020815-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-geneva-on-
the-lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
943 pm edt tue sep 1 2026

.rest of tonight...south winds 5 to 10 knots becoming southwest.
a chance of showers and thunderstorms late. waves 1 to 2 feet. 
.wednesday...southwest winds 5 to 10 knots. a chance of showers
and thunderstorms early, then a chance of showers with a slight
chance of thunderstorms late in the morning. a slight chance of
showers and thunderstorms late. waves 1 to 2 feet. 
.wednesday night...southwest winds 10 to 15 knots. a chance of
showers and thunderstorms. waves 1 to 3 feet. 
.thursday...southwest winds 5 to 15 knots becoming west. a chance
of showers and thunderstorms in the morning, then a chance of
showers in the afternoon. waves 1 to 3 feet. 
.thursday night...west winds 10 knots or less becoming northwest.
showers likely with a chance of thunderstorms in the evening,
then showers likely overnight. waves 1 to 2 feet. 
.friday...north winds 10 knots or less becoming northeast. a
chance of showers during the day. waves 1 foot or less. 
.saturday...northeast winds 5 to 10 knots becoming east. waves
2 feet or less. 
.sunday...east winds 5 to 10 knots becoming southeast. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$