fzus61 kbuf 181403
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expires:202607182100;;178083

open lake forecast for lake ontario
national weather service buffalo ny
1003 am edt sat jul 18 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 cold front will slice across the lake this afternoon and evening, 
with this front attached to a 29.4 inch area of low pressure 
crossing southeastern canada. a 30.0 inch area of high pressure will 
build across the great lakes region from west to east sunday into 
monday, followed by a warm front crossing the lake monday night and 
another cold front tuesday night, with these fronts attached to a 
29.4 inch area of low pressure near james bay. a secondary cold 
front will cross the lake wednesday, with a 30.1 inch high building 
across the lower great lakes region wednesday night through friday.


loz062-182100-
lake ontario open waters from the niagara river to hamlin beach-
1003 am edt sat jul 18 2026

.rest of today...southwest winds 15 to 20 knots. a chance of
showers and thunderstorms late this morning, then showers with a
chance of thunderstorms this afternoon. some thunderstorms may
produce gusty winds this afternoon. waves 2 to 4 feet building to
3 to 5 feet. 
.tonight...west winds 15 to 20 knots becoming north 10 to
15 knots. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.sunday...north winds 5 to 15 knots becoming west. waves 1 to
3 feet subsiding to 1 foot or less. 
.sunday night...west winds 10 knots or less. waves 1 foot or
less. 
.monday...southwest winds 10 knots or less becoming south 10 to
15 knots. a chance of showers monday night. waves 2 feet or less.
.tuesday...south winds 15 to 20 knots becoming west. showers with
a chance of thunderstorms. waves 2 to 4 feet. 
.wednesday...west winds 15 to 20 knots becoming northwest. a
chance of showers. waves 3 to 5 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 181403
glflo 
expires:202607182100;;178084

open lake forecast for lake ontario
national weather service buffalo ny
1003 am edt sat jul 18 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 cold front will slice across the lake this afternoon and evening, 
with this front attached to a 29.4 inch area of low pressure 
crossing southeastern canada. a 30.0 inch area of high pressure will 
build across the great lakes region from west to east sunday into 
monday, followed by a warm front crossing the lake monday night and 
another cold front tuesday night, with these fronts attached to a 
29.4 inch area of low pressure near james bay. a secondary cold 
front will cross the lake wednesday, with a 30.1 inch high building 
across the lower great lakes region wednesday night through friday.


loz063>065-182100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1003 am edt sat jul 18 2026

.rest of today...southwest winds 15 to 20 knots. areas of smoke.
showers with a chance of thunderstorms. some thunderstorms may
produce gusty winds this afternoon. waves 2 to 4 feet building to
3 to 5 feet. 
.tonight...west winds 15 to 20 knots becoming north. a chance of
showers and thunderstorms early. some thunderstorms may produce
gusty winds early. waves 3 to 6 feet. 
.sunday...north winds 15 to 20 knots becoming west 5 to 15 knots.
waves 2 to 4 feet subsiding to 1 to 2 feet. 
.sunday night...west winds 5 to 15 knots. waves 1 to 2 feet. 
.monday...southwest winds 5 to 15 knots becoming south and
increasing to 15 to 25 knots. a chance of showers monday night.
waves 1 foot or less building to 3 to 5 feet. 
.tuesday...south winds 15 to 25 knots becoming west. showers with
a chance of thunderstorms. waves 3 to 6 feet subsiding to 3 to
5 feet. 
.wednesday...west winds 15 to 20 knots. a chance of showers and
thunderstorms. waves 3 to 6 feet. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake erie
national weather service cleveland oh
945 am edt sat jul 18 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...
low pressure 29.70 inches enters the region as a cold front moves 
southeast across lake erie into tonight. as the cold front 
exits, high pressure 30.00 inches will briefly enter the region 
sunday and monday. a warm front will lift into the region 
monday and will be quickly followed by another cold front on
tuesday. a trough averaging 29.80 inches will linger across the 
eastern great lakes on wednesday.


lez061-166>169-182015-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm 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-
945 am edt sat jul 18 2026

.rest of today...southwest winds 15 to 25 knots becoming west. a
slight chance of showers and thunderstorms late this morning,
then a chance of showers and thunderstorms early this afternoon.
showers with a chance of thunderstorms late. waves 3 to 6 feet
building to 4 to 7 feet. waves occasionally around 9 feet. 
.tonight...northwest winds 15 to 20 knots becoming north. a
chance of showers and thunderstorms early. waves 3 to 6 feet. 
.sunday...north winds 5 to 15 knots. waves 2 to 4 feet subsiding
to 1 to 3 feet. 
.sunday night...west winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.monday...southwest winds 10 knots or less becoming south and
increasing to 15 to 20 knots. showers likely monday night. waves
1 foot or less building to 3 to 5 feet. 
.tuesday...southwest winds 15 to 25 knots becoming northwest.
showers with a chance of thunderstorms during the day, then a
chance of showers and thunderstorms tuesday night. waves 4 to
7 feet subsiding to 3 to 6 feet. waves occasionally around
9 feet. 
.wednesday...northwest winds 15 to 20 knots diminishing to 10 to
15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$