fzus61 kbuf 192003
glflo 
expires:202603200300;;969774

open lake forecast for lake ontario
national weather service buffalo ny
403 pm edt thu mar 19 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...following the passage of a warm front, a 30.2 inch high 
will build across the great lakes through this evening. a 29.8 inch 
low will track from the upper great lakes to the lower great lakes 
friday, before a 30.0 inch high becomes briefly established 
saturday. another 29.6 inch wave of low pressure will cross the 
lower great lakes sunday into monday with a strong cold front in its 
wake. a 30.4 inch high is then forecast to build across the upper 
great lakes on monday, and the eastern great lakes through tuesday.


loz065-200300-
lake ontario open waters from mexico bay to the saint lawrence
river-
403 pm edt thu mar 19 2026

.tonight...southwest winds 10 knots or less becoming north. waves
2 feet or less. 
.friday...southeast winds 5 to 10 knots becoming north and
increasing to 15 to 20 knots. a chance of snow showers early,
then snow and rain showers. rain showers late. waves 1 foot or
less building to 2 to 4 feet. 
.friday night...north winds 15 to 20 knots diminishing to 10 to
15 knots. waves 1 to 3 feet subsiding to 1 foot or less. 
.saturday...northwest winds 5 to 10 knots becoming west. waves
1 foot or less. 
.saturday night...northeast winds 5 to 10 knots becoming east. a
chance of rain and snow showers overnight. waves 1 foot or less. 
.sunday...east winds 10 to 15 knots becoming north and increasing
to 15 to 25 knots. rain and snow showers likely. waves 2 feet or
less building to 3 to 5 feet. 
.monday...north winds 15 to 25 knots. a chance of snow and rain
showers during the day. waves 3 to 5 feet subsiding to 1 to
3 feet. 
.tuesday...northwest winds 10 to 15 knots becoming southwest
15 to 20 knots. a chance of snow showers tuesday night. waves
2 feet or less building to 4 to 7 feet. waves occasionally around
9 feet. 

$$

fzus61 kbuf 192003
glflo 
expires:202603200300;;969772

open lake forecast for lake ontario
national weather service buffalo ny
403 pm edt thu mar 19 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...following the passage of a warm front, a 30.2 inch high 
will build across the great lakes through this evening. a 29.8 inch 
low will track from the upper great lakes to the lower great lakes 
friday, before a 30.0 inch high becomes briefly established 
saturday. another 29.6 inch wave of low pressure will cross the 
lower great lakes sunday into monday with a strong cold front in its 
wake. a 30.4 inch high is then forecast to build across the upper 
great lakes on monday, and the eastern great lakes through tuesday.


loz062-200300-
lake ontario open waters from the niagara river to hamlin beach-
403 pm edt thu mar 19 2026

.tonight...west winds 10 to 15 knots becoming southeast 10 knots
or less. waves 2 feet or less. 
.friday...southeast winds 10 to 15 knots becoming northwest 15 to
20 knots. snow and rain showers in the morning, then rain showers
early in the afternoon. a chance of rain showers late. waves 1 to
3 feet building to 3 to 5 feet. 
.friday night...north winds 15 to 20 knots becoming northwest
10 to 15 knots. waves 2 to 4 feet subsiding to 1 to 2 feet. 
.saturday...northwest winds 5 to 10 knots. waves around 1 foot. 
.saturday night...northeast winds 5 to 10 knots becoming east. a
chance of rain and snow showers overnight. waves around 1 foot. 
.sunday...east winds 10 to 15 knots becoming northeast and
increasing to 15 to 25 knots. rain and snow showers likely. waves
1 to 3 feet building to 5 to 7 feet. waves occasionally around
9 feet. 
.monday...north winds 15 to 25 knots becoming northwest. a chance
of rain and snow showers during the day. waves 3 to 6 feet
subsiding to 1 to 3 feet. 
.tuesday...west winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet building to 3 to 5 feet. 

$$

fzus61 kbuf 192003
glflo 
expires:202603200300;;969773

open lake forecast for lake ontario
national weather service buffalo ny
403 pm edt thu mar 19 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...following the passage of a warm front, a 30.2 inch high 
will build across the great lakes through this evening. a 29.8 inch 
low will track from the upper great lakes to the lower great lakes 
friday, before a 30.0 inch high becomes briefly established 
saturday. another 29.6 inch wave of low pressure will cross the 
lower great lakes sunday into monday with a strong cold front in its 
wake. a 30.4 inch high is then forecast to build across the upper 
great lakes on monday, and the eastern great lakes through tuesday.


loz063-064-200300-
lake ontario open waters from hamlin beach to mexico bay-
403 pm edt thu mar 19 2026

.tonight...southwest winds 10 knots or less becoming south. waves
2 feet or less. 
.friday...southeast winds 10 to 15 knots becoming northwest 15 to
20 knots. a chance of snow showers early, then rain and snow
showers late in the morning. rain showers in the afternoon. waves
1 to 3 feet building to 2 to 4 feet. 
.friday night...north winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.saturday...northwest winds around 10 knots. waves 1 to 2 feet. 
.saturday night...northeast winds 5 to 10 knots becoming east. a
chance of rain and snow showers overnight. waves 1 foot or less. 
.sunday...east winds 10 to 15 knots becoming north and increasing
to 15 to 25 knots. rain and snow showers likely. waves 2 feet or
less building to 4 to 7 feet. waves occasionally around 9 feet. 
.monday...north winds 15 to 25 knots becoming northwest. a chance
of rain and snow showers during the day. waves 4 to 7 feet
subsiding to 3 to 6 feet. waves occasionally around 9 feet. 
.tuesday...northwest winds 15 to 25 knots becoming west. a chance
of snow showers tuesday night. waves 2 to 4 feet building to 4 to
7 feet. waves occasionally around 9 feet. 

$$

fzus61 kcle 200149
glfle 
expires:202603200815;;980817

open lake forecast for lake erie
national weather service cleveland oh
949 pm edt thu mar 19 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 warm front will lift north of the lake tonight. a cold front 
will move southeast across lake erie on friday, followed by high 
pressure 30.00 inches on saturday. a stronger cold front will move
southeast across the lake sunday before high pressure 30.40 
inches builds southeast across the region early next week.


lez061-168-169-200815-
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-
949 pm edt thu mar 19 2026

.overnight...south winds 10 knots or less becoming
southeast. waves 1 foot or less. 
.friday...south winds 15 to 20 knots becoming west. a chance of
rain showers early, then rain showers likely. a chance of rain
showers late. waves 2 feet or less building to 3 to 5 feet. 
.friday night...northwest winds 5 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 2 feet. 
.saturday...northwest winds 5 to 10 knots becoming northeast.
waves 1 foot or less. 
.saturday night...east winds 10 knots or less becoming south.
waves 1 foot or less. 
.sunday...south winds 5 to 15 knots becoming north 15 to
20 knots. a chance of rain showers during the day, then a chance
of rain and snow sunday night. waves 1 to 3 feet building to 3 to
5 feet. 
.monday...northwest winds 15 to 20 knots becoming north 5 to
15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.tuesday...southwest winds 5 to 10 knots becoming west. waves
2 feet or less. 

$$

fzus61 kcle 200149
glfle 
expires:202603200815;;980815

open lake forecast for lake erie
national weather service cleveland oh
949 pm edt thu mar 19 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 warm front will lift north of the lake tonight. a cold front 
will move southeast across lake erie on friday, followed by high 
pressure 30.00 inches on saturday. a stronger cold front will move
southeast across the lake sunday before high pressure 30.40 
inches builds southeast across the region early next week.


lez162>164-200815-
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-
949 pm edt thu mar 19 2026

.overnight...east winds 5 to 15 knots becoming south. waves
1 foot or less. 
.friday...southwest winds 15 to 20 knots becoming west 10 to
15 knots. a slight chance of showers. waves 1 to 2 feet building
to 2 to 4 feet, then subsiding to 1 to 3 feet. 
.friday night...northwest winds 5 to 10 knots becoming northeast.
waves 2 feet or less. 
.saturday...east winds 5 to 10 knots. waves 1 foot or less. 
.saturday night...east winds 5 to 15 knots becoming south. waves
2 feet or less. 
.sunday...southwest winds 10 to 15 knots becoming northwest 15 to
20 knots. a chance of rain showers during the day, then a chance
of rain sunday night. waves 1 to 3 feet building to 3 to 6 feet. 
.monday...north winds 15 to 20 knots becoming east 5 to 15 knots.
waves 3 to 6 feet subsiding to 1 to 3 feet. 
.tuesday...southeast winds 5 to 15 knots becoming west. waves
2 feet or less. 

$$

fzus61 kcle 200149
glfle 
expires:202603200815;;980816

open lake forecast for lake erie
national weather service cleveland oh
949 pm edt thu mar 19 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 warm front will lift north of the lake tonight. a cold front 
will move southeast across lake erie on friday, followed by high 
pressure 30.00 inches on saturday. a stronger cold front will move
southeast across the lake sunday before high pressure 30.40 
inches builds southeast across the region early next week.


lez165>167-200815-
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-
949 pm edt thu mar 19 2026

.overnight...southeast winds 10 knots or less increasing to
10 to 15 knots. waves 1 foot or less. 
.friday...south winds 15 to 20 knots becoming west 10 to
15 knots. a chance of rain showers. waves 1 to 3 feet building to
3 to 5 feet. 
.friday night...northwest winds 5 to 15 knots becoming north.
waves 2 to 4 feet subsiding to 1 to 3 feet. 
.saturday...north winds 10 knots or less becoming east. waves
1 foot or less. 
.saturday night...east winds 5 to 15 knots becoming south. waves
2 feet or less. 
.sunday...southwest winds 10 to 15 knots becoming northwest and
increasing to 15 to 25 knots. a chance of rain showers during the
day, then a chance of rain sunday night. waves 1 to 3 feet
building to 4 to 7 feet. waves occasionally around 9 feet. 
.monday...northwest winds 15 to 20 knots becoming northeast 10 to
15 knots. waves 4 to 7 feet subsiding to 1 to 3 feet. waves
occasionally around 9 feet. 
.tuesday...southeast winds 5 to 15 knots becoming west 15 to
20 knots. waves 1 to 3 feet. 

$$

fzus63 kdtx 200139
glfsc 
expires:202603200945;;980750

lake st clair forecast
national weather service detroit/pontiac mi
939 pm edt thu mar 19 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...a compact clipper tracks across northern lake huron
friday morning. weak high pressure follows on saturday before a
strong cold front sinks south across the region with gusty
northeast wind on sunday. stronger high pressure follows on
monday with another cold front expected tuesday.


lcz460-200945-
lake st clair-
939 pm edt thu mar 19 2026

.rest of tonight...southeast winds 5 to 10 knots increasing to 10 to
15 knots early in the morning. partly cloudy by midnight becoming
mostly cloudy. waves 2 feet or less.
.friday...south winds 10 to 15 knots becoming southwest 15 to 20
knots late in the morning...then becoming west 10 to 15 knots in the
afternoon. mostly cloudy. a chance of light rain in the morning.
waves 1 to 3 feet.
.friday night...north winds 10 to 15 knots diminishing to 5 to 10
knots in the late evening and overnight. partly cloudy. waves 2 feet
or less.
.saturday...light and variable winds becoming southeast 5 to 10
knots early in the afternoon. mostly cloudy. waves 2 feet or less.
.saturday night...southeast winds 5 to 10 knots becoming south 10 to
15 knots after midnight. partly cloudy. waves 2 feet or less.
.sunday...south winds 10 to 15 knots backing to the northeast in the
afternoon...then becoming north 15 to 20 knots in the evening.
partly sunny in the morning becoming mostly cloudy. a chance of
light rain. waves 1 to 3 feet.
.monday...north winds 15 to 20 knots. partly cloudy. waves 1 to 3
feet.
.tuesday...southwest winds 10 to 15 knots. partly cloudy. waves 2
feet or less.

$$

fzus63 kdtx 200138
glflh 
expires:202603200945;;980721

open lake forecast for lake huron
national weather service detroit/pontiac mi
938 pm edt thu mar 19 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...a compact clipper tracks across northern lake huron
friday morning. weak high pressure follows on saturday before a
strong cold front sinks south across the region with gusty
northeast wind on sunday. stronger high pressure follows on
monday with another cold front expected tuesday.


lhz363-200945-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
938 pm edt thu mar 19 2026

.rest of tonight...east winds 5 to 10 knots becoming southeast
10 to 15 knots after midnight...then increasing to 15 to 20 knots
early in the morning. a chance of rain after midnight. waves 1 to
3 feet building to 2 to 4 feet early in the morning. 
.friday...south winds 10 to 15 knots veering to the west early in
the afternoon...then veering to the northwest late in the
afternoon. a chance of rain in the morning. waves 3 to 5 feet. 
.friday night...north winds 10 to 15 knots becoming northwest
5 to 10 knots in the late evening and overnight. waves 1 to
3 feet. 
.saturday...west winds 5 to 10 knots backing to the south early
in the afternoon. waves 2 feet or less. 
.saturday night...east winds 5 to 10 knots becoming southeast
10 to 15 knots in the late evening and overnight. a chance of
rain and snow after midnight. waves 1 to 3 feet. 
.sunday...northeast winds 15 to 20 knots increasing to 20 to
25 knots late in the afternoon. a chance of rain and snow. waves
5 to 7 feet building to 6 to 9 feet late in the afternoon. waves
occasionally around 12 feet. 
.monday...north winds 20 to 25 knots decreasing to 10 to
15 knots. waves 5 to 7 feet subsiding to 2 to 4 feet by midnight.
waves occasionally around 10 feet. 
.tuesday...south winds 15 to 20 knots increasing to 20 to
25 knots in the late morning and early afternoon...then becoming
southwest 15 to 20 knots early in the evening veering to the west
by midnight. waves 5 to 7 feet. waves occasionally around
10 feet. 


$$

fzus63 kdtx 200138
glflh 
expires:202603200945;;980720

open lake forecast for lake huron
national weather service detroit/pontiac mi
938 pm edt thu mar 19 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...a compact clipper tracks across northern lake huron
friday morning. weak high pressure follows on saturday before a
strong cold front sinks south across the region with gusty
northeast wind on sunday. stronger high pressure follows on
monday with another cold front expected tuesday.


lhz361-362-200945-
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-
938 pm edt thu mar 19 2026

.rest of tonight...east winds 5 to 10 knots becoming southeast
15 to 20 knots. snow and rain after midnight. waves 1 to 3 feet
building to 3 to 5 feet early in the morning. 
.friday...southeast winds 10 to 15 knots becoming east 5 to
10 knots in the late morning and early afternoon...then backing
to the 5 to 10 knots late in the afternoon. a chance of rain in
the morning. waves 3 to 5 feet. 
.friday night...west winds 5 to 10 knots. waves 1 to 3 feet. 
.saturday...west winds 5 to 10 knots backing to the south in the
late morning and early afternoon...then backing to the southeast
early in the afternoon. waves 2 feet or less. 
.saturday night...east winds 5 to 10 knots increasing to 10 to
15 knots in the late evening and overnight. a chance of snow in
the evening...then a chance of rain and snow after midnight.
waves 1 to 3 feet building to 2 to 4 feet after midnight. 
.sunday...east winds 15 to 20 knots becoming northeast 20 to
25 knots. a chance of snow. waves 6 to 9 feet. waves occasionally
around 12 feet. 
.monday...north winds 15 to 20 knots decreasing to 10 to 15 knots
in the late morning and early afternoon...then backing to the
northwest . waves 5 to 7 feet subsiding to 2 to 4 feet by
midnight. waves occasionally around 10 feet. 
.tuesday...south winds 15 to 20 knots increasing to 20 to
25 knots in the late morning and early afternoon...then becoming
southwest 15 to 20 knots early in the evening becoming west 20 to
25 knots by midnight. a chance of snow in the late morning and
early afternoon. waves 6 to 9 feet. waves occasionally around
12 feet. 

wave heights are for ice free areas.

$$

fzus63 kdtx 200138
glflh 
expires:202603200945;;980722

open lake forecast for lake huron
national weather service detroit/pontiac mi
938 pm edt thu mar 19 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...a compact clipper tracks across northern lake huron
friday morning. weak high pressure follows on saturday before a
strong cold front sinks south across the region with gusty
northeast wind on sunday. stronger high pressure follows on
monday with another cold front expected tuesday.


lhz462>464-200945-
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-
938 pm edt thu mar 19 2026

.rest of tonight...east winds 5 to 10 knots becoming southeast
10 to 15 knots after midnight...then increasing to 15 to 20 knots
early in the morning. a chance of rain after midnight. waves
2 feet or less building to 2 to 4 feet early in the morning. 
.friday...south winds 15 to 20 knots becoming southwest 10 to
15 knots in the late morning and early afternoon...then veering
to the northwest late in the afternoon. a chance of rain in the
morning. waves 3 to 5 feet subsiding to 2 to 4 feet late in the
afternoon. 
.friday night...north winds 10 to 15 knots decreasing to 5 to
10 knots by midnight...then backing to the west after midnight.
waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening
and overnight. 
.saturday...west winds 5 to 10 knots backing to the southwest in
the late morning and early afternoon...then backing to the
southeast early in the afternoon. waves 2 feet or less. 
.saturday night...southeast winds 5 to 10 knots increasing to
10 to 15 knots after midnight. a chance of rain and snow after
midnight. waves 2 feet or less. 
.sunday...east winds 10 to 15 knots becoming northeast 15 to
20 knots late in the morning...then becoming north 20 to 25 knots
late in the evening. a chance of snow. a chance of rain. waves
3 to 5 feet building to 6 to 9 feet. waves occasionally around
12 feet. 
.monday...north winds 20 to 25 knots decreasing to 5 to 10 knots.
waves 5 to 7 feet subsiding to 2 to 4 feet by midnight. waves
occasionally around 10 feet. 
.tuesday...southwest winds 10 to 15 knots becoming south 15 to
20 knots in the late morning and early afternoon...then becoming
southwest 10 to 15 knots early in the evening increasing to 15 to
20 knots by midnight. waves 3 to 5 feet. 


$$

fzus63 kdtx 191939
glflh 
expires:202603200400;;968948

open lake forecast for lake huron
national weather service detroit/pontiac mi
339 pm edt thu mar 19 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...a weakening cold front and diffuse pressure pattern
dominate the great lakes today, followed by a compact clipper
that tracks through friday morning. weak high pressure on
saturday before a strong cold front sinks across the region with
gusty northeast wind on sunday. stronger high pressure follows on
monday with another cold front expected tuesday.


lhz363-462>464-200400-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
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-
339 pm edt thu mar 19 2026

.tonight...light and variable winds becoming east 5 to 10 knots
late in the evening...then becoming southeast 10 to 15 knots
after midnight increasing to 15 to 20 knots early in the morning.
a chance of rain after midnight. waves 1 to 3 feet building to
2 to 4 feet early in the morning. 
.friday...south winds 15 to 20 knots decreasing to 10 to 15 knots
late in the morning...then veering to the west early in the
afternoon veering to the northwest late in the afternoon. a
chance of rain in the morning. waves 3 to 5 feet. 
.friday night...north winds 10 to 15 knots becoming northwest
5 to 10 knots in the late evening and overnight. waves 2 to
4 feet subsiding to 1 to 3 feet in the late evening and
overnight. 
.saturday...west winds 5 to 10 knots backing to the southeast
early in the afternoon. waves 2 feet or less. 
.saturday night...east winds 5 to 10 knots becoming southeast
10 to 15 knots in the late evening and overnight. a chance of
rain and snow after midnight. waves 1 to 3 feet. 
.sunday...northeast winds 15 to 20 knots becoming north 20 to
25 knots late in the afternoon. a chance of snow. a chance of
rain. waves 5 to 7 feet building to 6 to 9 feet late in the
afternoon. waves occasionally around 12 feet. 
.monday...north winds 20 to 25 knots decreasing to 10 to
15 knots. waves 5 to 7 feet subsiding to 2 to 4 feet by midnight.
waves occasionally around 10 feet. 
.tuesday...south winds 15 to 20 knots becoming southwest 10 to
15 knots early in the evening...then becoming west 15 to 20 knots
by midnight. waves 5 to 7 feet. waves occasionally around
10 feet. 


$$

fzus63 kmkx 200153
glflm 
expires:202603200930;;980825

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
853 pm cdt thu mar 19 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

south to southwest winds are expected to develop overnight, as 
low pressure around 29.7 inches progresses southeast into northern
lower michigan. winds will shift to northwest to north friday 
morning, as a cold front shifts southeast across the lake. winds
become light friday night, as high pressure around 30.3 inches 
builds into ontario. 

low pressure around 29.5 inches develops in the lee of the 
wyoming rockies saturday morning, shifting winds south. the low 
should move southeastward saturday night, allowing winds to 
increase and shift to the north and northeast across the northern
half of the lake. 

the low should move across central illinois into indiana sunday, 
as it deepens to around 29.4 inches. this should lead to northerly
winds backing to northwesterly sunday into sunday night across the
lake. a few gales are possible during this timeframe. high 
pressure around 30.5 inches should then bring decreasing winds 
for monday.


lmz261-362-364-366-563-565-567-868-200930-
lake michigan from seul choix point to rock island passage 5 nm
offshore to mid lake-
lake michigan south of a line from seul choix point to the
mackinac bridge and north of a line from charlevoix mi to south
fox island 5 nm offshore-
lake michigan from charlevoix to point betsie mi 5 nm offshore to
mid lake-
lake michigan from point betsie to manistee mi 5 nm offshore to
mid lake-
lake michigan from rock island passage to sturgeon bay wi-
lake michigan from sturgeon bay to two rivers wi 5 nm offshore to
mid lake-
lake michigan from two rivers to sheboygan wi 5 nm offshore to
mid lake-
lake michigan from pentwater to manistee mi 5 nm offshore to mid
lake-
853 pm cdt thu mar 19 2026

sheboygan wi to pentwater mi north...

.rest of tonight...southeast winds 5 to 10 kt increasing to 10 to
15 kt late this evening, then becoming south 10 to 20 kt after
midnight becoming southwest late. chance of rain through early
evening, then chance of rain and freezing rain overnight. patchy
fog overnight. waves 1 to 2 ft building to 2 to 4 ft. 
.friday...west winds 10 to 15 kt becoming north. patchy fog in
the morning. waves 2 to 4 ft. 
.friday night...north winds 5 to 10 kt backing to southwest.
waves 1 to 3 ft subsiding to 1 ft or less. 
.saturday...south winds 10 to 15 kt. waves 1 to 3 ft. 
.saturday night...east winds 10 to 15 kt becoming northeast 10 to
20 kt. chance of rain and snow. waves 1 to 3 ft building to 2 to
4 ft. 
.sunday...northeast winds 15 to 25 kt increasing to 30 kt. chance
of rain and snow in the morning, then chance of rain in the
afternoon. waves 4 to 6 ft occasionally to 8 ft building to 5 to
8 ft occasionally to 10 ft. 
.sunday night...north winds to 30 kt diminishing to 15 to 25 kt.
waves 5 to 8 ft occasionally to 10 ft. 
.monday...north winds 15 to 25 kt becoming northwest 10 to 20 kt.
waves 5 to 8 ft occasionally to 10 ft subsiding to 3 to 5 ft. 
.tuesday...southwest winds to 30 kt diminishing to 15 to 25 kt.
waves 5 to 8 ft occasionally to 10 ft.  

$$

fzus63 kmkx 200153
glflm 
expires:202603200930;;980826

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
853 pm cdt thu mar 19 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

south to southwest winds are expected to develop overnight, as 
low pressure around 29.7 inches progresses southeast into northern
lower michigan. winds will shift to northwest to north friday 
morning, as a cold front shifts southeast across the lake. winds
become light friday night, as high pressure around 30.3 inches 
builds into ontario. 

low pressure around 29.5 inches develops in the lee of the 
wyoming rockies saturday morning, shifting winds south. the low 
should move southeastward saturday night, allowing winds to 
increase and shift to the north and northeast across the northern
half of the lake. 

the low should move across central illinois into indiana sunday, 
as it deepens to around 29.4 inches. this should lead to northerly
winds backing to northwesterly sunday into sunday night across the
lake. a few gales are possible during this timeframe. high 
pressure around 30.5 inches should then bring decreasing winds 
for monday.


lmz080-669-671-673-675-777-779-870-872-874-876-878-200930-
lake michigan from michigan city in to st. joseph mi 5 nm
offshore to mid lake-
lake michigan from sheboygan to port washington wi 5 nm offshore
to mid lake-
lake michigan from port washington to north point light wi 5 nm
offshore to mid lake-
lake michigan from north point light to wind point wi 5 nm
offshore to mid lake-
lake michigan from wind point wi to winthrop harbor il 5 nm
offshore to mid lake-
lake michigan from winthrop harbor to wilmette harbor il 5 nm
offshore to mid lake-
lake michigan from wilmette harbor il to michigan city in 5 nm
offshore to mid lake-
lake michigan from whitehall to pentwater mi 5 nm offshore to mid
lake-
lake michigan from grand haven to whitehall mi 5 nm offshore to
mid lake-
lake michigan from holland to grand haven mi 5 nm offshore to mid
lake-
lake michigan from south haven to holland mi 5 nm offshore to mid
lake-
lake michigan from st. joseph to south haven mi 5 nm offshore to
mid lake-
853 pm cdt thu mar 19 2026

sheboygan wi to pentwater mi south...

.rest of tonight...east winds 5 to 10 kt becoming southeast 10 to
15 kt late this evening, then becoming south 10 to 20 kt after
midnight becoming southwest late. waves 1 to 2 ft building to
2 to 4 ft. 
.friday...southwest winds 10 to 20 kt veering to north. waves
2 to 4 ft. 
.friday night...north winds 10 to 15 kt veering to southeast.
patchy fog overnight. waves 1 to 3 ft subsiding to 1 to 2 ft.
.saturday...south winds 10 to 15 kt. waves 1 to 3 ft. 
.saturday night...south winds 10 to 15 kt becoming west 10 to
20 kt. waves 1 to 3 ft building to 2 to 4 ft. 
.sunday...north winds 15 to 25 kt increasing to 30 kt. waves 4 to
6 ft occasionally to 8 ft building to 6 to 9 ft occasionally to
12 ft. 
.sunday night...north winds to 30 kt. waves 7 to 10 ft
occasionally to 13 ft. 
.monday...north winds 15 to 25 kt diminishing to 10 to 20 kt.
waves 6 to 9 ft occasionally to 12 ft subsiding to 4 to 7 ft
occasionally to 9 ft. 
.tuesday...south winds 15 to 25 kt. waves 4 to 7 ft occasionally
to 9 ft.  

$$

fzus63 kmqt 200201
glfls 
expires:202603200800;;980936

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt thu mar 19 2026

for waters beyond 5 nautical miles of shore on lake superior.

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...

weak ridging around 30.1 inches over lake superior gives way to a 
clipper low moving across the lake tonight into early friday at 
around 29.7 inches. while another low moves through northern ontario 
toward the north shores of lake superior friday night, another low 
stretches into the northern plains around the same time. together, 
these lows are expected to bring about troughing of around around 
29.8 inch over lake superior on saturday into sunday. behind the 
troughing, 30.4 inch ridging builds into the great lakes and 
northern plains by monday. a 29.9 inch clipper low tracking across 
northern ontario on tuesday briefly extends a 30.0 inch trough over 
the lake. a 30.5 inch high quickly follows behind it for wednesday.



lsz162-200800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm edt thu mar 19 2026 /900 pm cdt thu mar 19 2026/

.rest of tonight...south winds 10 to 20 knots veering west late.
a chance of freezing rain and rain showers by midnight. waves
calm to 2 feet. 
.friday...west winds 5 to 15 knots. waves calm to 2 feet. 
.friday night...west winds 5 to 15 knots veering northeast late.
waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots becoming northeast 10 to
20 knots by mid afternoon. a chance of rain and snow showers.
waves building to 1 to 3 feet. 
.saturday night...northeast winds 15 to 25 knots. a chance of
snow showers, possibly mixed with rain. waves building to 4 to
7 feet occasionally to 9 feet. 
.sunday...northeast winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. a chance of snow showers. waves
subsiding to 3 to 5 feet occasionally to 7 feet. 
.sunday night...northeast winds 10 to 20 knots becoming northwest
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.monday...southwest winds 5 to 15 knots increasing to 20 to
30 knots. waves building to 3 to 5 feet occasionally to 7 feet. 
.tuesday...west winds 15 to 25 knots becoming northeast 10 to
20 knots. waves subsiding to calm to 2 feet, then building to
3 to 5 feet occasionally to 7 feet. 

$$

fzus63 kmqt 200201
glfls 
expires:202603200800;;980937

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt thu mar 19 2026

for waters beyond 5 nautical miles of shore on lake superior.

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...

weak ridging around 30.1 inches over lake superior gives way to a 
clipper low moving across the lake tonight into early friday at 
around 29.7 inches. while another low moves through northern ontario 
toward the north shores of lake superior friday night, another low 
stretches into the northern plains around the same time. together, 
these lows are expected to bring about troughing of around around 
29.8 inch over lake superior on saturday into sunday. behind the 
troughing, 30.4 inch ridging builds into the great lakes and 
northern plains by monday. a 29.9 inch clipper low tracking across 
northern ontario on tuesday briefly extends a 30.0 inch trough over 
the lake. a 30.5 inch high quickly follows behind it for wednesday.



lsz263-200800-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
1000 pm edt thu mar 19 2026

.rest of tonight...south winds 10 to 20 knots veering southwest
after midnight, then becoming west 5 to 15 knots late. freezing
rain and snow showers likely by midnight. a chance of rain
showers. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.friday...northwest winds 5 to 15 knots backing west in the
afternoon. waves subsiding to calm to 2 feet. 
.friday night...west winds 5 to 15 knots veering northeast late.
waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots increasing to 15 to 25 knots
by mid afternoon. a chance of snow showers, possibly mixed with
rain. waves building to 1 to 3 feet. 
.saturday night...northeast winds 15 to 25 knots. a chance of
rain showers through midnight. a chance of snow showers. waves
building to 5 to 8 feet occasionally to 10 feet. 
.sunday...northeast winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. freezing spray through early
afternoon. a chance of snow showers. waves subsiding to 3 to
5 feet occasionally to 7 feet. 
.sunday night...northeast winds 5 to 15 knots backing north after
midnight. waves subsiding to 2 to 4 feet. 
.monday...northwest winds 10 to 20 knots becoming southwest 20 to
30 knots. waves subsiding to calm to 2 feet, then building to
5 to 8 feet occasionally to 10 feet. 
.tuesday...west winds 20 to 30 knots becoming northeast 15 to
25 knots. waves subsiding to 1 to 3 feet, then building to 4 to
7 feet occasionally to 9 feet. 

$$

fzus63 kmqt 200201
glfls 
expires:202603200800;;980938

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt thu mar 19 2026

for waters beyond 5 nautical miles of shore on lake superior.

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...

weak ridging around 30.1 inches over lake superior gives way to a 
clipper low moving across the lake tonight into early friday at 
around 29.7 inches. while another low moves through northern ontario 
toward the north shores of lake superior friday night, another low 
stretches into the northern plains around the same time. together, 
these lows are expected to bring about troughing of around around 
29.8 inch over lake superior on saturday into sunday. behind the 
troughing, 30.4 inch ridging builds into the great lakes and 
northern plains by monday. a 29.9 inch clipper low tracking across 
northern ontario on tuesday briefly extends a 30.0 inch trough over 
the lake. a 30.5 inch high quickly follows behind it for wednesday.



lsz264-200800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 pm edt thu mar 19 2026

.rest of tonight...southeast winds 15 to 25 knots veering south
after midnight, then becoming west 10 to 20 knots late. snow
showers by midnight. a chance of rain showers. a chance of snow
showers after midnight. waves 2 to 4 feet building to 3 to 5 feet
occasionally to 7 feet. 
.friday...north winds 5 to 15 knots backing west late. waves
subsiding to calm to 2 feet. 
.friday night...west winds 5 to 15 knots veering north late.
waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. a chance of rain showers through early
afternoon. a chance of snow showers. waves building to 1 to
3 feet. 
.saturday night...northeast winds 15 to 25 knots increasing to
20 to 30 knots after midnight. a chance of snow showers. freezing
spray after midnight. waves building to 5 to 8 feet occasionally
to 10 feet. 
.sunday...northeast winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. freezing spray. waves subsiding to
3 to 5 feet occasionally to 7 feet. 
.sunday night...northeast winds 5 to 15 knots backing north after
midnight. waves subsiding to 2 to 4 feet. 
.monday...northwest winds 5 to 15 knots becoming southwest gales
to 35 knots. waves subsiding to calm to 2 feet, then building to
6 to 9 feet occasionally to 11 feet. 
.tuesday...west gales to 35 knots becoming northeast 20 to
30 knots. freezing spray. waves subsiding to 3 to 5 feet
occasionally to 7 feet, then building to 5 to 8 feet occasionally
to 10 feet. 

$$

fzus63 kmqt 200201
glfls 
expires:202603200800;;980939

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt thu mar 19 2026

for waters beyond 5 nautical miles of shore on lake superior.

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...

weak ridging around 30.1 inches over lake superior gives way to a 
clipper low moving across the lake tonight into early friday at 
around 29.7 inches. while another low moves through northern ontario 
toward the north shores of lake superior friday night, another low 
stretches into the northern plains around the same time. together, 
these lows are expected to bring about troughing of around around 
29.8 inch over lake superior on saturday into sunday. behind the 
troughing, 30.4 inch ridging builds into the great lakes and 
northern plains by monday. a 29.9 inch clipper low tracking across 
northern ontario on tuesday briefly extends a 30.0 inch trough over 
the lake. a 30.5 inch high quickly follows behind it for wednesday.



lsz265-200800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 pm edt thu mar 19 2026

.rest of tonight...southeast winds 15 to 25 knots increasing to
20 to 30 knots after midnight, then becoming west 15 to 25 knots
late. rain showers likely, possibly mixed with freezing rain by
midnight. snow showers. a chance of rain showers after midnight.
waves 2 to 4 feet building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 1 to 3 feet. 
.friday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon, then backing west late. waves
subsiding to calm to 2 feet. 
.friday night...west winds 10 to 20 knots. waves calm to 2 feet. 
.saturday...east winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. a slight chance of rain showers
through early afternoon. a chance of snow showers. waves building
to 1 to 3 feet. 
.saturday night...northeast winds 20 to 30 knots. a chance of
snow showers. waves building to 5 to 8 feet occasionally to
10 feet. 
.sunday...northeast gales to 35 knots diminishing to 20 to
30 knots by mid afternoon. freezing spray through early
afternoon. a chance of snow showers. waves building to 6 to
9 feet occasionally to 11 feet, then subsiding to 4 to 7 feet
occasionally to 9 feet. 
.sunday night...north winds 15 to 25 knots. waves subsiding to
3 to 6 feet occasionally to 8 feet. 
.monday...northwest winds 10 to 20 knots becoming southwest gales
to 35 knots. waves subsiding to calm to 2 feet, then building to
4 to 7 feet occasionally to 9 feet. 
.tuesday...west gales to 35 knots becoming northwest 20 to
30 knots. freezing spray. waves subsiding to 2 to 4 feet, then
building to 6 to 9 feet occasionally to 11 feet. 

$$

fzus63 kmqt 200201
glfls 
expires:202603200800;;980940

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt thu mar 19 2026

for waters beyond 5 nautical miles of shore on lake superior.

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...

weak ridging around 30.1 inches over lake superior gives way to a 
clipper low moving across the lake tonight into early friday at 
around 29.7 inches. while another low moves through northern ontario 
toward the north shores of lake superior friday night, another low 
stretches into the northern plains around the same time. together, 
these lows are expected to bring about troughing of around around 
29.8 inch over lake superior on saturday into sunday. behind the 
troughing, 30.4 inch ridging builds into the great lakes and 
northern plains by monday. a 29.9 inch clipper low tracking across 
northern ontario on tuesday briefly extends a 30.0 inch trough over 
the lake. a 30.5 inch high quickly follows behind it for wednesday.



lsz266-200800-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
1000 pm edt thu mar 19 2026

.rest of tonight...south winds 20 to 30 knots backing southeast
after midnight, then becoming south 15 to 25 knots late. a slight
chance of freezing rain by midnight. snow showers. a slight
chance of rain showers after midnight. waves 2 to 4 feet building
to 3 to 6 feet occasionally to 8 feet, then subsiding to 3 to
5 feet occasionally to 7 feet. 
.friday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon. waves subsiding to calm to 2 feet. 
.friday night...west winds 10 to 20 knots veering northwest late.
waves building to 1 to 3 feet. 
.saturday...southeast winds 10 to 20 knots becoming east 15 to
25 knots by mid afternoon. a chance of rain showers through early
afternoon. a chance of snow showers. waves 1 to 3 feet. 
.saturday night...east winds 15 to 25 knots becoming northeast
20 to 30 knots after midnight. a chance of snow showers. waves
building to 5 to 8 feet occasionally to 10 feet. 
.sunday...northeast gales to 35 knots diminishing to 20 to
30 knots by mid afternoon. freezing spray through early
afternoon. a chance of snow showers. waves building to 6 to
9 feet occasionally to 11 feet, then subsiding to 4 to 7 feet
occasionally to 9 feet. 
.sunday night...northeast winds 15 to 25 knots backing north
after midnight. waves subsiding to 3 to 6 feet occasionally to
8 feet. 
.monday...northwest winds 10 to 20 knots becoming south gales to
40 knots. waves subsiding to 1 to 3 feet, then building to 9 to
12 feet occasionally to 15 feet. 
.tuesday...west gales to 40 knots becoming north 20 to 30 knots.
freezing spray. waves subsiding to 5 to 8 feet occasionally to
10 feet, then building to 6 to 9 feet occasionally to 11 feet. 

$$

fzus63 kmqt 200201
glfls 
expires:202603200800;;980941

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt thu mar 19 2026

for waters beyond 5 nautical miles of shore on lake superior.

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...

weak ridging around 30.1 inches over lake superior gives way to a 
clipper low moving across the lake tonight into early friday at 
around 29.7 inches. while another low moves through northern ontario 
toward the north shores of lake superior friday night, another low 
stretches into the northern plains around the same time. together, 
these lows are expected to bring about troughing of around around 
29.8 inch over lake superior on saturday into sunday. behind the 
troughing, 30.4 inch ridging builds into the great lakes and 
northern plains by monday. a 29.9 inch clipper low tracking across 
northern ontario on tuesday briefly extends a 30.0 inch trough over 
the lake. a 30.5 inch high quickly follows behind it for wednesday.



lsz267-200800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 pm edt thu mar 19 2026

.rest of tonight...southeast winds 10 to 20 knots becoming south
15 to 25 knots late. snow showers. a slight chance of rain
showers after midnight. waves calm to 2 feet building to 2 to
4 feet, then subsiding to 1 to 3 feet. 
.friday...northwest winds 10 to 20 knots. waves subsiding to calm
to 2 feet. 
.friday night...west winds 10 to 20 knots. waves calm to 2 feet. 
.saturday...southeast winds 10 to 20 knots backing east by mid
afternoon. a chance of snow showers. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 
.saturday night...east winds 15 to 25 knots becoming northeast
20 to 30 knots after midnight. a chance of snow showers. waves
building to 3 to 6 feet occasionally to 8 feet. 
.sunday...northeast winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. freezing spray through early
afternoon. a chance of snow showers. waves subsiding to 3 to
5 feet occasionally to 7 feet. 
.sunday night...northeast winds 15 to 25 knots becoming north
10 to 20 knots after midnight. waves subsiding to 2 to 4 feet,
then building to 3 to 5 feet occasionally to 7 feet. 
.monday...north winds 10 to 20 knots becoming south gales to
35 knots. freezing spray. a chance of snow showers. waves
subsiding to calm to 2 feet, then building to 7 to 10 feet
occasionally to 13 feet. 
.tuesday...west gales to 35 knots becoming northwest 15 to
25 knots. a chance of snow showers. freezing spray. waves
building to 9 to 12 feet occasionally to 15 feet, then subsiding
to 4 to 7 feet occasionally to 9 feet. 

$$