fzus61 kbuf 200804
glflo 
expires:202603201500;;994883

open lake forecast for lake ontario
national weather service buffalo ny
403 am edt fri mar 20 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 29.8 inch low over the upper great lakes will push 
southeast across new york state today, before sliding off the east 
coast tonight. a 30.0 inch high will then build across the lake 
saturday, before another 29.6 inch low crosses the lower great lakes 
sunday and slides off the mid-atlantic coast monday. a 30.4 inch 
high is then forecast to build across the upper great lakes monday, 
and the lower great lakes tuesday.


loz062-201500-
lake ontario open waters from the niagara river to hamlin beach-
403 am edt fri mar 20 2026

.today...southeast winds 15 to 20 knots becoming northeast. rain
with snow likely this morning, then rain early this afternoon.
waves 1 to 2 feet building to 2 to 4 feet. 
.tonight...northeast winds 10 to 15 knots becoming northwest.
waves 1 to 3 feet. 
.saturday...northwest winds 5 to 10 knots becoming east. waves
1 foot or less. 
.saturday night...east winds 5 to 10 knots. a chance of rain and
snow overnight. waves 1 foot or less. 
.sunday...east winds 10 to 15 knots becoming northeast 15 to
20 knots. rain likely with a chance of snow during the day, then
rain likely with a chance of snow showers sunday night. waves
1 to 3 feet building to 3 to 5 feet. 
.monday...north winds 15 to 20 knots becoming northwest. a chance
of snow showers during the day. waves 3 to 5 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 200804
glflo 
expires:202603201500;;994885

open lake forecast for lake ontario
national weather service buffalo ny
403 am edt fri mar 20 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 29.8 inch low over the upper great lakes will push 
southeast across new york state today, before sliding off the east 
coast tonight. a 30.0 inch high will then build across the lake 
saturday, before another 29.6 inch low crosses the lower great lakes 
sunday and slides off the mid-atlantic coast monday. a 30.4 inch 
high is then forecast to build across the upper great lakes monday, 
and the lower great lakes tuesday.


loz065-201500-
lake ontario open waters from mexico bay to the saint lawrence
river-
403 am edt fri mar 20 2026

.today...southeast winds 5 to 10 knots becoming northeast and
increasing to 15 to 20 knots. snow and rain. rain likely late.
waves 1 to 3 feet. 
.tonight...northeast winds 10 to 15 knots becoming north. waves
2 feet or less. 
.saturday...northwest winds 5 to 10 knots. waves 1 foot or less. 
.saturday night...south winds 10 knots or less becoming
southeast. snow and rain likely overnight. waves 1 foot or less. 
.sunday...southeast winds 10 to 15 knots becoming northeast 15 to
20 knots. rain and snow likely during the day, then a chance of
rain and snow showers sunday night. waves 1 to 3 feet building to
2 to 4 feet. 
.monday...north winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of snow showers during the day. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.tuesday...northwest winds 10 to 15 knots becoming west 15 to
20 knots. a chance of snow showers tuesday night. waves 1 to
3 feet building to 3 to 6 feet. 

$$

fzus61 kbuf 200804
glflo 
expires:202603201500;;994884

open lake forecast for lake ontario
national weather service buffalo ny
403 am edt fri mar 20 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 29.8 inch low over the upper great lakes will push 
southeast across new york state today, before sliding off the east 
coast tonight. a 30.0 inch high will then build across the lake 
saturday, before another 29.6 inch low crosses the lower great lakes 
sunday and slides off the mid-atlantic coast monday. a 30.4 inch 
high is then forecast to build across the upper great lakes monday, 
and the lower great lakes tuesday.


loz063-064-201500-
lake ontario open waters from hamlin beach to mexico bay-
403 am edt fri mar 20 2026

.today...south winds 10 to 15 knots becoming north 15 to
20 knots. rain with snow likely this morning, then rain this
afternoon. waves 1 to 3 feet building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.tonight...northeast winds 10 to 15 knots becoming north. waves
1 to 3 feet. 
.saturday...northwest winds 5 to 10 knots becoming north. waves
1 foot or less. 
.saturday night...east winds 5 to 10 knots becoming southeast.
rain and snow likely overnight. waves 2 feet or less. 
.sunday...southeast winds 10 to 15 knots becoming northeast 15 to
20 knots. rain and snow likely during the day, then rain likely
with a chance of snow showers sunday night. waves 1 to 3 feet
building to 3 to 6 feet. 
.monday...north winds 15 to 20 knots becoming northwest. a chance
of snow showers during the day. waves 3 to 6 feet subsiding to
2 to 4 feet. 
.tuesday...northwest winds 15 to 20 knots becoming west. a chance
of rain and snow showers tuesday night. waves 2 to 4 feet
building to 3 to 6 feet. 

$$

fzus61 kcle 200722
glfle 
expires:202603201415;;994111

open lake forecast for lake erie
national weather service cleveland oh
322 am edt fri mar 20 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 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.



lez061-168-169-201415-
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-
322 am edt fri mar 20 2026

.today...southeast winds 10 to 15 knots becoming west 15 to
20 knots. a chance of rain showers this morning, then rain
showers this afternoon. waves 2 feet or less building to 3 to
5 feet. 
.tonight...northwest winds 5 to 10 knots becoming north. waves
2 to 4 feet subsiding to 1 to 2 feet. 
.saturday...northeast winds less than 10 knots. waves 1 foot or
less. 
.saturday night...east winds 10 knots or less becoming south.
waves 1 foot or less. 
.sunday...southwest winds 10 to 15 knots becoming northeast. a
chance of rain showers. waves 1 to 3 feet building to 3 to
5 feet. 
.monday...north winds 5 to 15 knots. waves 3 to 5 feet subsiding
to 1 to 3 feet. 
.tuesday...south winds 5 to 10 knots becoming west. waves 2 feet
or less. 

$$

fzus61 kcle 200722
glfle 
expires:202603201415;;994109

open lake forecast for lake erie
national weather service cleveland oh
322 am edt fri mar 20 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 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>164-201415-
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-
322 am edt fri mar 20 2026

.today...south winds 15 to 20 knots becoming west 10 to 15 knots.
a chance of showers late this morning. a slight chance of showers
early this afternoon. waves 1 to 2 feet building to 2 to 4 feet,
then subsiding to 1 to 3 feet. 
.tonight...northwest winds 5 to 10 knots becoming northeast.
waves 2 feet or less. 
.saturday...northeast winds 5 to 10 knots becoming east. waves
1 foot or less. 
.saturday night...east winds 5 to 15 knots becoming southwest.
waves 2 feet or less. 
.sunday...southwest winds 10 to 15 knots becoming north 15 to
20 knots. a chance of rain showers. 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 200722
glfle 
expires:202603201415;;994110

open lake forecast for lake erie
national weather service cleveland oh
322 am edt fri mar 20 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 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>167-201415-
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-
322 am edt fri mar 20 2026

.today...south winds 15 to 20 knots becoming west 10 to 15 knots.
a chance of rain showers late this morning. rain showers likely
early this afternoon, then a slight chance of rain showers late.
waves 1 to 3 feet building to 3 to 5 feet. 
.tonight...northwest winds 5 to 10 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 southwest.
waves 2 feet or less. 
.sunday...southwest winds 10 to 15 knots becoming north 15 to
20 knots. a chance of rain showers. waves 1 to 3 feet building to
4 to 7 feet. waves occasionally around 9 feet. 
.monday...north winds 15 to 20 knots becoming northeast 5 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 200736
glflh 
expires:202603201545;;994262

open lake forecast for lake huron
national weather service detroit/pontiac mi
336 am edt fri mar 20 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
this 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.


lhz361-362-201545-
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-
336 am edt fri mar 20 2026

.today...southeast winds 10 to 20 knots backing to the north. 
snow in the morning. waves 3 to 5 feet. 
.tonight...west winds 5 to 10 knots increasing to 10 to 15 knots
after midnight...then decreasing to 5 to 10 knots early in the
morning. waves 1 to 3 feet. 
.saturday...west winds 5 to 10 knots veering to the north in the
late morning and early afternoon...then becoming southeast 10 to
15 knots early in the afternoon. a chance of snow in the
afternoon. waves 1 to 3 feet. 
.saturday night...east winds 10 to 15 knots. a chance of snow in
the evening...then rain and snow likely after midnight. waves
2 to 4 feet. 
.sunday...northeast winds 15 to 20 knots. a chance of rain and
snow. waves 4 to 6 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 4 to 6 feet subsiding to 1 to 3 feet by
midnight. waves occasionally around 8 feet. 
.tuesday...south winds 10 to 15 knots becoming southwest 15 to
20 knots until early evening...then veering to the west by
midnight. a chance of snow until afternoon. waves 3 to 5 feet
building to 4 to 6 feet. waves occasionally around 8 feet. 

wave heights are for ice free areas.

$$

fzus63 kdtx 200736
glflh 
expires:202603201545;;994263

open lake forecast for lake huron
national weather service detroit/pontiac mi
336 am edt fri mar 20 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
this 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.


lhz363-201545-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
336 am edt fri mar 20 2026

.today...southeast winds 10 to 20 knots becoming south late in 
the morning...then veering northwest late in the afternoon. rain 
in the morning. waves 3 to 5 feet. 
.tonight...north winds 10 to 15 knots decreasing to 5 to 10 knots
late in the evening...then backing to the northwest after
midnight. waves 1 to 3 feet. 
.saturday...northwest winds 5 to 10 knots backing to the
southeast early in the afternoon. waves 2 feet or less. 
.saturday night...southeast winds 10 to 15 knots veering to the
south after midnight. a chance of rain and snow in the evening...
then a chance of rain after midnight. waves 1 to 3 feet. 
.sunday...east winds 15 to 20 knots backing to the northeast. a
chance of rain. waves 4 to 6 feet. 
.monday...north winds 15 to 20 knots decreasing to 10 to
15 knots. waves 4 to 6 feet subsiding to 1 to 3 feet by midnight.
waves occasionally around 8 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 becoming west 15 to
20 knots by midnight. waves 3 to 5 feet. 


$$

fzus63 kdtx 200736
glflh 
expires:202603201545;;994264

open lake forecast for lake huron
national weather service detroit/pontiac mi
336 am edt fri mar 20 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
this 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>464-201545-
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-
336 am edt fri mar 20 2026

.today...southeast winds 10 to 20 knots becoming south late in 
the morning...then veering northwest late in the afternoon. rain 
likely in the morning. waves 3 to 5 feet subsiding to 2 to 4 feet 
late in the afternoon. 
.tonight...north winds 10 to 15 knots decreasing to 5 to 10 knots
by midnight...then backing to the northwest early in the morning.
waves 1 to 3 feet. 
.saturday...northwest winds 5 to 10 knots 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 in the late evening and overnight. a chance of
rain after midnight. waves 1 to 3 feet. 
.sunday...south winds 10 to 15 knots becoming north 15 to
20 knots. a chance of rain. waves 2 to 4 feet building to 5 to
7 feet. waves occasionally around 10 feet. 
.monday...north winds 15 to 20 knots decreasing to 5 to 10 knots.
waves 3 to 5 feet. 
.tuesday...south winds 10 to 15 knots veering to the west by
midnight. waves 1 to 3 feet building to 2 to 4 feet. 


$$

fzus63 kdtx 200721
glfsc 
expires:202603201530;;994074

lake st clair forecast
national weather service detroit/pontiac mi
321 am edt fri mar 20 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
this 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.


lcz460-201530-
lake st clair-
321 am edt fri mar 20 2026

.today...southwest winds around 15 knots veering to the northwest
late in the afternoon. mostly cloudy. a chance of light rain in 
the morning. waves 2 feet or less.
.tonight...north winds 10 to 15 knots diminishing to 5 to 10 knots
after midnight. mostly 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...south winds 5 to 10 knots. partly cloudy becoming
mostly cloudy. waves 2 feet or less.
.sunday...southwest winds 5 to 10 knots becoming north 10 to 15
knots in the afternoon...then increasing to 15 to 20 knots in the
evening. mostly cloudy. a chance of light rain. waves 1 to 3 feet.
.monday...north winds 15 to 20 knots. partly cloudy. waves 2 feet or
less.
.tuesday...west winds 10 to 15 knots. partly cloudy. waves 2 feet or
less.

$$

fzus63 kmkx 200759
glflm 
expires:202603201515;;994640

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
259 am cdt fri mar 20 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 continue as a low pressure around 29.7
inches moves southeast through northern lower michigan. winds will
shift to northwest to north later this morning as cold front
shifts across the lake behind the exiting low. tonight winds will
become light as high pressure around 30.3 inches builds in from
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.


lmz080-669-671-673-675-777-779-870-872-874-876-878-201515-
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-
259 am cdt fri mar 20 2026

sheboygan wi to pentwater mi south...

.today...southwest winds 10 to 20 kt veering to north. waves 3 to
5 ft subsiding to 2 to 4 ft. 
.tonight...north winds 10 to 15 kt becoming east 5 to 10 kt.
waves 2 to 4 ft subsiding to 1 to 2 ft. 
.saturday...southeast winds 5 to 10 kt increasing to 10 to 15 kt
late in the morning, then becoming south 10 to 20 kt in the
afternoon. waves 1 to 2 ft building to 2 to 4 ft. 
.saturday night...south winds 10 to 15 kt becoming west 10 to
20 kt. waves 3 to 5 ft. 
.sunday...north winds 15 to 25 kt increasing to 30 kt. chance of
rain. waves 4 to 7 ft occasionally to 9 ft building to 7 to 10 ft
occasionally to 13 ft. 
.sunday night...north winds to 30 kt diminishing to 15 to 25 kt.
waves 8 to 11 ft occasionally to 14 ft subsiding to 6 to 9 ft
occasionally to 12 ft. 
.monday...north winds 15 to 25 kt diminishing to 10 to 20 kt.
waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 6 ft
occasionally to 8 ft. 
.tuesday...south winds 15 to 25 kt becoming southwest 10 to
20 kt. waves 4 to 7 ft occasionally to 9 ft.  

$$

fzus63 kmkx 200759
glflm 
expires:202603201515;;994639

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
259 am cdt fri mar 20 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 continue as a low pressure around 29.7
inches moves southeast through northern lower michigan. winds will
shift to northwest to north later this morning as cold front
shifts across the lake behind the exiting low. tonight winds will
become light as high pressure around 30.3 inches builds in from
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.


lmz261-362-364-366-563-565-567-868-201515-
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-
259 am cdt fri mar 20 2026

sheboygan wi to pentwater mi north...

.today...west winds 10 to 20 kt becoming north 10 to 15 kt.
patchy fog this morning. chance of light freezing rain and slight
chance of rain this morning. waves 2 to 4 ft. 
.tonight...north winds 10 to 15 kt backing to southwest 5 to
10 kt. waves 1 to 3 ft subsiding to 1 to 2 ft. 
.saturday...south winds 5 to 10 kt increasing to 10 to 20 kt.
waves 1 to 2 ft building to 2 to 4 ft. 
.saturday night...south winds 10 to 15 kt backing to north 10 to
20 kt. chance of rain in the evening, then chance of rain and
light freezing rain overnight. waves 2 to 4 ft. 
.sunday...north winds 15 to 25 kt increasing to 30 kt. chance of
rain in the morning. 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 10 to 20 kt.
waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 7 ft
occasionally to 9 ft. 
.monday...north winds 10 to 20 kt becoming northwest. waves 3 to
5 ft subsiding to 2 to 4 ft. 
.tuesday...southwest winds to 30 kt diminishing to 15 to 25 kt.
waves 5 to 8 ft occasionally to 10 ft.  

$$

fzus63 kmqt 200800
glfls 
expires:202603202000;;994697

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri mar 20 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...

a 29.7 inch clipper low over western lake superior this morning 
moves over the lower great lakes by this afternoon, replaced briefly 
by 30.0 inch high pressure over the lake tonight. troughing of around 
29.6 inches returns to the lake on saturday as a 29.4 inch low moves 
onto the northern plains this weekend. behind the troughing, 30.4 
inch ridging builds into the great lakes and northern plains by 
monday. a 29.8 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.



lsz265-202000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am edt fri mar 20 2026

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

$$

fzus63 kmqt 200800
glfls 
expires:202603202000;;994698

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri mar 20 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...

a 29.7 inch clipper low over western lake superior this morning 
moves over the lower great lakes by this afternoon, replaced briefly 
by 30.0 inch high pressure over the lake tonight. troughing of around 
29.6 inches returns to the lake on saturday as a 29.4 inch low moves 
onto the northern plains this weekend. behind the troughing, 30.4 
inch ridging builds into the great lakes and northern plains by 
monday. a 29.8 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.



lsz266-202000-
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-
400 am edt fri mar 20 2026

.early this morning...south winds 15 to 25 knots. patchy fog.
waves 3 to 5 feet occasionally to 7 feet. 
.today...northwest winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon. waves subsiding to 1 to 3 feet. 
.tonight...west winds 10 to 20 knots. waves subsiding to calm to
2 feet. 
.saturday...southeast winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. a chance of snow showers, possibly
mixed with rain. waves building to 2 to 4 feet. 
.saturday night...east winds 15 to 25 knots becoming northeast
20 to 30 knots after midnight. a chance of snow showers, possibly
mixed with rain. 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. waves subsiding to 3 to 6 feet occasionally to 8 feet.
.sunday night...northeast winds 10 to 20 knots backing north
after midnight. waves subsiding to 2 to 4 feet. 
.monday...northwest winds 10 to 20 knots becoming south gales to
35 knots. 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 north 20 to 30 knots.
freezing spray. waves building to 8 to 11 feet occasionally to
14 feet, then subsiding to 4 to 7 feet occasionally to 9 feet. 

$$

fzus63 kmqt 200800
glfls 
expires:202603202000;;994695

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri mar 20 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...

a 29.7 inch clipper low over western lake superior this morning 
moves over the lower great lakes by this afternoon, replaced briefly 
by 30.0 inch high pressure over the lake tonight. troughing of around 
29.6 inches returns to the lake on saturday as a 29.4 inch low moves 
onto the northern plains this weekend. behind the troughing, 30.4 
inch ridging builds into the great lakes and northern plains by 
monday. a 29.8 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.



lsz263-202000-
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-
400 am edt fri mar 20 2026

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

$$

fzus63 kmqt 200800
glfls 
expires:202603202000;;994694

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri mar 20 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...

a 29.7 inch clipper low over western lake superior this morning 
moves over the lower great lakes by this afternoon, replaced briefly 
by 30.0 inch high pressure over the lake tonight. troughing of around 
29.6 inches returns to the lake on saturday as a 29.4 inch low moves 
onto the northern plains this weekend. behind the troughing, 30.4 
inch ridging builds into the great lakes and northern plains by 
monday. a 29.8 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.



lsz162-202000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt fri mar 20 2026 /300 am cdt fri mar 20 2026/

.early this morning...west winds 10 to 20 knots. waves calm to
2 feet. 
.today...west winds 5 to 15 knots. waves calm to 2 feet. 
.tonight...west winds 5 to 15 knots backing east late. waves calm
to 2 feet. 
.saturday...east winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon, then backing northeast late. snow showers
likely through early afternoon. a chance of rain showers. a
slight chance of snow showers by mid afternoon. waves building to
1 to 3 feet. 
.saturday night...northeast winds 15 to 25 knots. a chance of
rain and snow showers. waves building to 3 to 6 feet occasionally
to 8 feet. 
.sunday...northeast winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet. 
.sunday night...east winds 5 to 15 knots veering west after
midnight. waves subsiding to calm to 2 feet. 
.monday...west winds 5 to 15 knots becoming southwest 15 to
25 knots. a chance of snow showers. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 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 200800
glfls 
expires:202603202000;;994699

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri mar 20 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...

a 29.7 inch clipper low over western lake superior this morning 
moves over the lower great lakes by this afternoon, replaced briefly 
by 30.0 inch high pressure over the lake tonight. troughing of around 
29.6 inches returns to the lake on saturday as a 29.4 inch low moves 
onto the northern plains this weekend. behind the troughing, 30.4 
inch ridging builds into the great lakes and northern plains by 
monday. a 29.8 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.



lsz267-202000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am edt fri mar 20 2026

.early this morning...south winds 15 to 25 knots. patchy fog. a
slight chance of rain and snow showers. waves 2 to 4 feet. 
.today...northwest winds 10 to 20 knots. patchy fog through early
afternoon. waves subsiding to calm to 2 feet, then building to
1 to 3 feet. 
.tonight...northwest winds 10 to 20 knots backing west after
midnight. waves calm to 2 feet. 
.saturday...southeast winds 10 to 20 knots increasing to 15 to
25 knots late. a chance of snow showers, possibly mixed with
rain. waves building to 1 to 3 feet. 
.saturday night...east winds 15 to 25 knots becoming northeast
20 to 30 knots after midnight. a slight chance of rain showers
through 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. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.sunday night...northeast winds 10 to 20 knots. waves subsiding
to calm to 2 feet. 
.monday...north winds 10 to 20 knots becoming south gales to
35 knots. freezing spray. a chance of snow showers. waves
building to 6 to 9 feet occasionally to 11 feet. 
.tuesday...west gales to 35 knots becoming north 15 to 25 knots.
a chance of snow showers. freezing spray. waves building to 8 to
11 feet occasionally to 14 feet, then subsiding to 4 to 7 feet
occasionally to 9 feet. 

$$

fzus63 kmqt 200800
glfls 
expires:202603202000;;994696

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri mar 20 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...

a 29.7 inch clipper low over western lake superior this morning 
moves over the lower great lakes by this afternoon, replaced briefly 
by 30.0 inch high pressure over the lake tonight. troughing of around 
29.6 inches returns to the lake on saturday as a 29.4 inch low moves 
onto the northern plains this weekend. behind the troughing, 30.4 
inch ridging builds into the great lakes and northern plains by 
monday. a 29.8 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.



lsz264-202000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 am edt fri mar 20 2026

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

$$