fzus61 kbuf 180804
glflo 
expires:202604181500;;570049

open lake forecast for lake ontario
national weather service buffalo ny
403 am edt sat apr 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 30.0 inch high will push northeast across the 
canadian maritimes today. meanwhile, a 29.4 inch low north of lake 
superior this morning will move to james bay and deepen to 29.0 
inches during the day, while pushing a trailing strong cold front 
across the lake this afternoon and evening. a 30.4 inch high will 
then settle southeastward across the great lakes sunday through 
monday night, before sliding off the mid-atlantic coast tuesday. a 
29.4 inch low over lower hudson bay tuesday, will weaken to 29.9 
inches by wednesday, while pushing an attendant weak cold front 
across the lake tuesday night. a 30.2 inch high will then build 
across the great lakes region wednesday and thursday.


loz062-181500-
lake ontario open waters from the niagara river to hamlin beach-
403 am edt sat apr 18 2026

.today...southeast winds 10 to 15 knots becoming southwest 15 to
20 knots. showers likely early this afternoon. showers with a
chance of thunderstorms late. some thunderstorms may produce
gusty winds late. waves 1 to 3 feet building to 2 to 4 feet. 
.tonight...west winds 15 to 20 knots becoming northwest 10 to
15 knots. rain showers likely. waves 2 to 4 feet. 
.sunday...west winds 10 to 15 knots increasing to 15 to 20 knots.
a chance of rain and snow showers in the afternoon. waves 1 to
3 feet building to 2 to 4 feet. 
.sunday night...west winds 15 to 20 knots becoming northwest. a
chance of rain showers in the evening. waves 3 to 5 feet. 
.monday...northwest winds 15 to 20 knots becoming southwest 5 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tuesday...south winds 15 to 20 knots becoming northwest 10 to
15 knots. a chance of rain showers. waves 1 to 3 feet building to
2 to 4 feet, then subsiding to 1 to 3 feet. 
.wednesday...north winds 10 knots or less. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 180804
glflo 
expires:202604181500;;570050

open lake forecast for lake ontario
national weather service buffalo ny
403 am edt sat apr 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 30.0 inch high will push northeast across the 
canadian maritimes today. meanwhile, a 29.4 inch low north of lake 
superior this morning will move to james bay and deepen to 29.0 
inches during the day, while pushing a trailing strong cold front 
across the lake this afternoon and evening. a 30.4 inch high will 
then settle southeastward across the great lakes sunday through 
monday night, before sliding off the mid-atlantic coast tuesday. a 
29.4 inch low over lower hudson bay tuesday, will weaken to 29.9 
inches by wednesday, while pushing an attendant weak cold front 
across the lake tuesday night. a 30.2 inch high will then build 
across the great lakes region wednesday and thursday.


loz063>065-181500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
403 am edt sat apr 18 2026

.today...southeast winds 15 to 20 knots becoming south. showers
likely late. waves 1 to 3 feet building to 3 to 5 feet. 
.tonight...southwest winds 15 to 20 knots becoming northwest
10 to 15 knots. rain showers with a chance of thunderstorms
early, then rain showers from late evening on. some thunderstorms
may produce gusty winds early. waves 3 to 5 feet subsiding to
2 to 4 feet. 
.sunday...west winds 10 to 15 knots increasing to 15 to 20 knots.
rain and snow showers likely in the morning, then a chance of
snow showers in the afternoon. waves 1 to 3 feet building to 3 to
6 feet. 
.sunday night...west winds 15 to 20 knots becoming northwest.
waves 3 to 6 feet. 
.monday...northwest winds 15 to 20 knots becoming west and
diminishing to 5 to 10 knots. waves 3 to 6 feet subsiding to 1 to
3 feet. 
.tuesday...south winds 10 to 15 knots becoming west. a chance of
rain showers. waves 1 to 3 feet. 
.wednesday...north winds 5 to 15 knots. waves 1 to 3 feet
subsiding to 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 180736
glfle 
expires:202604181415;;569103

open lake forecast for lake erie
national weather service cleveland oh
336 am edt sat apr 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 29.40 inches will drag a cold front east through the
great lakes and ohio valley this evening. a trough averaging 
29.90 inches builds across the lake on sunday before high pressure
30.40 inches moves overhead sunday night into monday.


lez165>168-181415-
vermilion to avon point oh beyond 5 nm 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-
336 am edt sat apr 18 2026

.today...south winds 15 to 20 knots becoming west. a chance of
showers with a slight chance of thunderstorms this morning, then
showers with a chance of thunderstorms early this afternoon.
showers likely with a slight chance of thunderstorms late. waves
2 to 4 feet. 
.tonight...west winds 15 to 20 knots. a slight chance of showers
early, then a chance of showers late in the evening. waves 2 to
4 feet. 
.sunday...west winds 15 to 20 knots. a chance of rain showers in
the afternoon. waves 2 to 4 feet. 
.sunday night...west winds 15 to 20 knots becoming north 10 to
15 knots. a chance of rain showers in the evening. waves 2 to
4 feet. 
.monday...northwest winds 5 to 15 knots becoming south. waves
1 to 3 feet. 
.tuesday...south winds 15 to 20 knots becoming west 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.wednesday...north winds 5 to 15 knots becoming east 10 knots or
less. waves 1 to 3 feet subsiding to 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 180736
glfle 
expires:202604181415;;569104

open lake forecast for lake erie
national weather service cleveland oh
336 am edt sat apr 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 29.40 inches will drag a cold front east through the
great lakes and ohio valley this evening. a trough averaging 
29.90 inches builds across the lake on sunday before high pressure
30.40 inches moves overhead sunday night into monday.


lez061-169-181415-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
336 am edt sat apr 18 2026

.today...south winds 15 to 20 knots becoming southwest. a slight
chance of showers late this morning. a chance of showers with a
slight chance of thunderstorms early this afternoon, then showers
with a chance of thunderstorms late. waves 1 to 3 feet building
to 2 to 4 feet. 
.tonight...west winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of rain showers through the early overnight.
waves 2 to 4 feet. 
.sunday...west winds 10 to 15 knots increasing to 15 to 20 knots.
a chance of rain and snow showers in the afternoon. waves 2 to
4 feet. 
.sunday night...west winds 10 to 15 knots becoming northwest. a
chance of rain showers in the evening. waves 2 to 4 feet
subsiding to 1 to 2 feet. 
.monday...northwest winds 5 to 10 knots becoming south. waves
1 to 2 feet. 
.tuesday...south winds 5 to 15 knots becoming southwest. waves
1 to 2 feet. 
.wednesday...north winds 10 knots or less becoming northeast.
waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 180736
glfle 
expires:202604181415;;569102

open lake forecast for lake erie
national weather service cleveland oh
336 am edt sat apr 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 29.40 inches will drag a cold front east through the
great lakes and ohio valley this evening. a trough averaging 
29.90 inches builds across the lake on sunday before high pressure
30.40 inches moves overhead sunday night into monday.


lez162>164-181415-
detroit river lt. to maumee bay oh to reno beach oh beyond 5nm
offshoreline to us-canadian border-
reno beach to the islands oh beyond 5nm off shoreline to us-
canadian border-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
336 am edt sat apr 18 2026

.today...south winds 15 to 20 knots becoming west. showers with a
chance of thunderstorms. waves 1 to 3 feet building to 2 to
4 feet. 
.tonight...west winds 15 to 20 knots. a slight chance of showers
early. waves 2 to 4 feet. 
.sunday...west winds 15 to 20 knots. a chance of showers in the
afternoon. waves 2 to 4 feet. 
.sunday night...northwest winds 15 to 20 knots becoming north
10 to 15 knots. a chance of rain showers in the evening. waves
2 to 4 feet subsiding to 1 to 3 feet. 
.monday...north winds 5 to 15 knots becoming south 15 to
20 knots. waves 1 to 3 feet. 
.tuesday...south winds 15 to 20 knots becoming west 10 to
15 knots. waves 1 to 3 feet. 
.wednesday...north winds 10 to 15 knots becoming east 10 knots or
less. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 180726
glflh 
expires:202604181530;;568707

open lake forecast for lake huron
national weather service detroit/pontiac mi
326 am edt sat apr 18 2026

for waters beyond five nautical miles off shore on lake huron

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, 29.30 inches, lifting into northern 
ontario drags a respectable cold front through the central great 
lakes this morning supporting another round of showers and 
a few thunderstorms. colder air filters into the region the rest 
of the weekend maintaining moderate to strong northwesterly winds.


lhz361>363-181530-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
326 am edt sat apr 18 2026

.today...south winds 20 to 25 knots with gusts to around 30 knots
becoming west 15 to 20 knots in the afternoon. showers likely in
the morning. waves 8 to 12 feet. waves occasionally around
15 feet. 
.tonight...west winds 10 to 15 knots. waves 5 to 7 feet. waves
occasionally around 10 feet. 
.sunday...west winds 10 to 15 knots becoming northwest 15 to
20 knots with gusts to around 30 knots in the late morning and
afternoon. waves 5 to 7 feet building to 6 to 9 feet early in the
afternoon. waves occasionally around 12 feet. 
.sunday night...northwest winds 20 to 25 knots with gusts to
around 30 knots decreasing to 15 to 20 knots after midnight.
waves 8 to 12 feet. waves occasionally around 15 feet. 
.monday...northwest winds 10 to 15 knots becoming west 5 to
10 knots late in the morning...then becoming southeast 10 to
15 knots late in the afternoon becoming south 15 to 20 knots late
in the evening. waves 4 to 6 feet subsiding to 1 to 3 feet late
in the afternoon...then building to 6 to 9 feet late in the
evening. waves occasionally around 12 feet. 
.tuesday...south winds 20 to 25 knots with gusts to around
30 knots becoming southwest 15 to 20 knots in the late morning
and early afternoon...then becoming south 10 to 15 knots early in
the evening veering to the northwest by midnight. waves 6 to
9 feet subsiding to 3 to 5 feet by midnight. waves occasionally
around 12 feet. 
.wednesday...north winds 10 to 15 knots becoming northeast 5 to
10 knots. waves 2 to 4 feet subsiding to 1 to 3 feet . 


$$

fzus63 kdtx 180726
glfsc 
expires:202604181530;;568711

lake st clair forecast
national weather service detroit/pontiac mi
326 am edt sat apr 18 2026

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, 29.30 inches, lifting into northern
ontario drags a respectable cold front through the central great
lakes this morning supporting another round of showers and a few
thunderstorms. colder air filters into the region the rest of the
weekend maintaining moderate to strong northwesterly winds.


lcz460-181530-
lake st clair-
326 am edt sat apr 18 2026

.today...south winds 15 to 20 knots veering to the west in the
afternoon. showers in the morning...then light showers early in the
afternoon. waves 1 to 3 feet.
.tonight...west winds 15 to 20 knots diminishing to 10 to 15 knots
after midnight. partly cloudy. waves 2 feet or less.
.sunday...west winds 10 to 15 knots increasing to 15 to 20 knots
early in the afternoon. partly sunny. a chance of light showers
early in the afternoon. waves 2 feet or less.
.sunday night...northwest winds 15 to 20 knots becoming north 10 to
15 knots in the late evening and overnight. mostly clear. a chance
of light showers early in the evening. waves 2 feet or less.
.monday...northwest winds 10 to 15 knots diminishing to 5 to 10
knots in the afternoon...then veering to the southeast in the
evening. mostly clear. waves 2 feet or less.
.tuesday...west winds 15 to 20 knots. partly cloudy. waves 1 to 3
feet.
.wednesday...northeast winds 10 to 15 knots. mostly clear. waves 2
feet or less.

$$

fzus63 kdtx 180726
glflh 
expires:202604181530;;568708

open lake forecast for lake huron
national weather service detroit/pontiac mi
326 am edt sat apr 18 2026

for waters beyond five nautical miles off shore on lake huron

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, 29.30 inches, lifting into northern 
ontario drags a respectable cold front through the central great 
lakes this morning supporting another round of showers and 
a few thunderstorms. colder air filters into the region the rest 
of the weekend maintaining moderate to strong northwesterly winds.


lhz462>464-181530-
lake huron from port austin to harbor beach beyond 5nm off shore-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
326 am edt sat apr 18 2026

.today...south winds 20 to 25 knots with gusts to around 30 knots
decreasing to 15 to 20 knots with gusts to around 30 knots late
in the morning...then veering to the southwest early in the
afternoon becoming west 10 to 15 knots late in the afternoon. a
chance of showers. waves 5 to 7 feet. waves occasionally around
10 feet. 
.tonight...west winds 10 to 15 knots. waves 2 to 4 feet. 
.sunday...west winds 10 to 15 knots. a chance of snow showers in
the afternoon. waves 2 to 4 feet. 
.sunday night...northwest winds 15 to 20 knots. waves 6 to
9 feet. waves occasionally around 12 feet. 
.monday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots late in the morning...then veering to the northeast late
in the afternoon becoming south 15 to 20 knots late in the
evening. waves 4 to 6 feet subsiding to 1 to 3 feet late in the
afternoon...then building to 4 to 6 feet late in the evening.
waves occasionally around 8 feet. 
.tuesday...south winds 20 to 25 knots with gusts to around
30 knots decreasing to 15 to 20 knots in the late morning and
early afternoon...then decreasing to 10 to 15 knots early in the
evening backing to the south 10 to 15 knots by midnight. waves
6 to 9 feet subsiding to 3 to 5 feet . waves occasionally around
12 feet. 
.wednesday...north winds 10 to 15 knots decreasing to 5 to
10 knots. waves 2 to 4 feet subsiding to 1 to 3 feet . 


$$