fzus61 kbuf 040202
glflo 
expires:202507040900;;837657

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt thu jul 3 2025

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...an expansive 30.1 inch area of high pressure will build 
eastward across the great lakes tonight and friday...before drifting 
to the eastern seaboard saturday. a wavy cold frontal boundary is 
then forecast to slowly push southeastward across the upper great 
lakes and southern ontario during sunday, then across the lower 
great lakes on monday. a 30.1 inch surface high will build across 
the lower great lakes on tuesday.


loz062-040900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt thu jul 3 2025

.overnight...northwest winds 5 to 15 knots becoming north.
waves 2 to 4 feet subsiding to 1 to 2 feet. 
.friday...north winds 10 knots or less becoming southwest. waves
1 foot or less. 
.friday night...south winds 5 to 10 knots. waves 1 foot or less. 
.saturday...south winds 5 to 15 knots. waves 2 feet or less. 
.saturday night...south winds 10 to 15 knots becoming southwest.
waves 1 to 2 feet. 
.sunday...southwest winds 10 to 15 knots. waves 1 to 3 feet. 
.monday...southwest winds around 10 knots becoming north. a
chance of showers and thunderstorms. waves 1 to 2 feet. 
.tuesday...northeast winds 5 to 10 knots becoming north. waves
2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 040202
glflo 
expires:202507040900;;837658

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt thu jul 3 2025

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...an expansive 30.1 inch area of high pressure will build 
eastward across the great lakes tonight and friday...before drifting 
to the eastern seaboard saturday. a wavy cold frontal boundary is 
then forecast to slowly push southeastward across the upper great 
lakes and southern ontario during sunday, then across the lower 
great lakes on monday. a 30.1 inch surface high will build across 
the lower great lakes on tuesday.


loz063>065-040900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt thu jul 3 2025

.overnight...northwest winds 5 to 15 knots becoming north.
waves 2 to 4 feet subsiding to 1 to 2 feet. 
.friday...north winds 5 to 10 knots becoming southwest. waves
1 foot or less. 
.friday night...southwest winds 5 to 10 knots becoming south.
waves 1 foot or less. 
.saturday...south winds 5 to 10 knots. waves 1 foot or less. 
.saturday night...south winds 5 to 15 knots. waves 2 feet or
less. 
.sunday...southwest winds 5 to 15 knots becoming south. waves
1 to 2 feet. 
.monday...southwest winds 5 to 10 knots becoming north. a chance
of showers and thunderstorms. waves 1 to 2 feet. 
.tuesday...north winds 5 to 10 knots. a chance of showers during
the day. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 040202
glfsl 
expires:202507040900;;837656

forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1002 pm edt thu jul 3 2025


slz022-024-040900-
saint lawrence river from cape vincent to saint regis
1002 pm edt thu jul 3 2025

.overnight...northwest winds less than 10 knots. mainly
clear. 
.friday...northwest winds less than 10 knots becoming west.
sunny.
.friday night...south winds less than 10 knots. mainly clear in
the evening, then becoming mostly cloudy. 
.saturday...south winds 10 knots or less becoming southwest.
partly sunny. 
.saturday night...southwest winds 5 to 10 knots. partly to mostly
cloudy. 
.sunday...southwest winds 5 to 10 knots. a chance of showers. 
.monday...southwest winds 10 knots or less becoming north. a
chance of showers and thunderstorms. 
.tuesday...north winds less than 10 knots becoming northeast.
partly cloudy. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 040127
glfle 
expires:202507040815;;836542

open lake forecast for lake erie
national weather service cleveland oh
927 pm edt thu jul 3 2025

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 ridge averaging 30.10 inches builds from the western great 
lakes through friday before it exits slowly eastward this weekend.
this ridge evolution will allow a warm front to sweep northward 
across lake erie friday night. a cold front should drift 
southeastward across lake erie sunday night through monday 
evening. behind the front, another ridge averaging 30.10 inches 
should build from the upper midwest through this tuesday.


lez061-168-169-040815-
ripley to buffalo ny extending from 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-
927 pm edt thu jul 3 2025

.rest of tonight...northwest winds 10 knots or less becoming
northeast. waves 1 foot or less. 
.friday...northeast winds less than 10 knots. waves 1 foot or
less. 
.friday night...east winds 10 knots or less becoming south. waves
1 foot or less. 
.saturday...south winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.saturday night...southwest winds 10 knots or less becoming
south. waves 2 feet or less. 
.sunday...southwest winds 5 to 10 knots. waves 1 to 2 feet. 
.monday...southwest winds 5 to 10 knots becoming north. a chance
of showers and thunderstorms during the day. waves 1 to 2 feet. 
.tuesday...north winds 5 to 10 knots becoming northeast. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$