fzus61 kbuf 181410
glflo 
expires:202604182100;;583289

open lake forecast for lake ontario
national weather service buffalo ny
1009 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 today will move to james bay and deepen to 29.0 inches, 
while pushing a trailing strong cold front across the lake this 
afternoon and evening. a 30.4 inch high will then settle southeast 
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.


loz062-182100-
lake ontario open waters from the niagara river to hamlin beach-
1009 am edt sat apr 18 2026

.this afternoon...south winds 15 to 20 knots becoming southwest.
showers likely early. 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 181410
glflo 
expires:202604182100;;583290

open lake forecast for lake ontario
national weather service buffalo ny
1009 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 today will move to james bay and deepen to 29.0 inches, 
while pushing a trailing strong cold front across the lake this 
afternoon and evening. a 30.4 inch high will then settle southeast 
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>065-182100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1009 am edt sat apr 18 2026

.this afternoon...southeast winds 15 to 20 knots becoming south.
showers likely late. waves 2 to 4 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 181352
glfle 
expires:202604182015;;582569

open lake forecast for lake erie
national weather service cleveland oh
952 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 moves across the lake on sunday before high pressure
30.40 inches moves overhead sunday night into monday.


lez165>168-182015-
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-
952 am edt sat apr 18 2026

.rest of today...south winds 15 to 20 knots becoming west. a
chance of showers with a slight chance of thunderstorms late 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 181352
glfle 
expires:202604182015;;582568

open lake forecast for lake erie
national weather service cleveland oh
952 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 moves across the lake on sunday before high pressure
30.40 inches moves overhead sunday night into monday.


lez162>164-182015-
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-
952 am edt sat apr 18 2026

.rest of today...southwest winds 15 to 20 knots becoming west.
showers likely with a slight chance of thunderstorms late this
morning, then showers with a chance of thunderstorms early this
afternoon. a slight chance of showers late. 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.

$$

fzus61 kcle 181352
glfle 
expires:202604182015;;582570

open lake forecast for lake erie
national weather service cleveland oh
952 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 moves across the lake on sunday before high pressure
30.40 inches moves overhead sunday night into monday.


lez061-169-182015-
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-
952 am edt sat apr 18 2026

.rest of today...south winds 15 to 20 knots becoming southwest. a
slight chance of showers late this morning, then a chance of
showers with a slight chance of thunderstorms early this
afternoon. showers with a chance of thunderstorms late. waves
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.

$$

fzus63 kdtx 181317
glfsc 
expires:202604182130;;581718

lake st clair forecast
national weather service detroit/pontiac mi
917 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.


lcz460-182130-
lake st clair-
917 am edt sat apr 18 2026

.rest of today...southwest winds 10 to 15 knots becoming west 15 to
20 knots in the afternoon. light showers likely late 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 1 to 3 feet.
.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 1 to 3 feet.
.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 181316
glflh 
expires:202604182130;;581711

open lake forecast for lake huron
national weather service detroit/pontiac mi
916 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>363-182130-
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-
916 am edt sat apr 18 2026

.rest of today...southwest winds 15 to 20 knots with gusts to
around 30 knots becoming west 10 to 15 knots late in the
afternoon. a chance of showers late in the morning. waves 8 to
12 feet. waves occasionally around 15 feet. 
.tonight...west winds 10 to 15 knots decreasing to 5 to 10 knots
after midnight. waves 4 to 6 feet. waves occasionally around
8 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. waves occasionally around 10 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 181316
glflh 
expires:202604182130;;581712

open lake forecast for lake huron
national weather service detroit/pontiac mi
916 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>464-182130-
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-
916 am edt sat apr 18 2026

.rest of today...south winds 15 to 20 knots becoming southwest
10 to 15 knots early in the afternoon...then becoming west 5 to
10 knots late in the afternoon. a chance of showers. waves 4 to
6 feet. 
.tonight...west winds 5 to 10 knots increasing to 10 to 15 knots
late in the evening...then decreasing to 5 to 10 knots after
midnight. waves 2 to 4 feet. waves occasionally around 8 feet. 
.sunday...west winds 5 to 10 knots increasing to 10 to 15 knots
in the late morning and afternoon. 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 . 


$$