fzus61 kbuf 192003
glflo 
expires:202610200300;;847698

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt mon oct 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...30.4 inch high pressure will maintain influence over the 
lower great lakes this week. the high may briefly weaken to 30.2 
inches wednesday and thursday.


loz063>065-200300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt mon oct 19 2026

.tonight...west winds 5 to 10 knots becoming northeast and
increasing to 15 to 20 knots. waves 1 to 3 feet. 
.tuesday...northeast winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tuesday night...northeast winds 5 to 15 knots. waves 1 to
3 feet. 
.wednesday...northeast winds 10 knots or less. waves 2 feet or
less. 
.wednesday night...north winds 10 knots or less becoming
northwest. waves 1 foot or less. 
.thursday...northwest winds 5 to 15 knots becoming northeast
15 to 20 knots. waves 2 feet or less building to 2 to 4 feet. 
.friday...northeast winds 15 to 20 knots becoming southeast and
diminishing to 5 to 10 knots. waves 2 to 4 feet subsiding to
2 feet or less. 
.saturday...south winds 10 knots or less. waves 2 feet or less. 

$$

fzus61 kbuf 192003
glflo 
expires:202610200300;;847697

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt mon oct 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...30.4 inch high pressure will maintain influence over the 
lower great lakes this week. the high may briefly weaken to 30.2 
inches wednesday and thursday.


loz062-200300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt mon oct 19 2026

.tonight...west winds 10 knots or less becoming northeast 10 to
15 knots. waves 2 feet or less. 
.tuesday...northeast winds 5 to 15 knots. waves 1 to 3 feet. 
.tuesday night...northeast winds 5 to 10 knots becoming east.
waves 1 to 2 feet. 
.wednesday...east winds 10 knots or less becoming northeast.
waves 1 to 2 feet. 
.wednesday night...light and variable winds becoming northwest
5 to 10 knots. waves 1 foot or less. 
.thursday...northwest winds 5 to 10 knots becoming northeast and
increasing to 15 to 20 knots. waves 1 foot or less building to
1 to 3 feet. 
.friday...northeast winds 5 to 15 knots becoming southeast. waves
1 to 3 feet subsiding to 1 foot or less. 
.saturday...southeast winds less than 10 knots becoming south.
waves 1 foot or less. 

$$

fzus61 kcle 191935
glfle 
expires:202610200215;;847060

open lake forecast for lake erie
national weather service cleveland oh
335 pm edt mon oct 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... 
high pressure 30.40 inches will maintain influence over lake erie
for the majority of this week. the high may briefly weaken to 
30.20 inches wednesday and thursday.


lez164>168-200215-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
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-
335 pm edt mon oct 19 2026

.tonight...northwest winds 10 knots or less becoming northeast.
waves 1 foot or less. 
.tuesday...northeast winds 5 to 15 knots. waves 1 to 3 feet. 
.tuesday night...northeast winds 15 to 20 knots becoming east
10 to 15 knots. waves 2 to 4 feet. 
.wednesday...east winds 10 knots or less becoming northeast.
waves 1 to 3 feet. 
.wednesday night...northeast winds 10 knots or less becoming
north. waves 1 foot or less. 
.thursday...north winds 5 to 15 knots becoming northeast. waves
1 to 3 feet. 
.friday...east winds 10 to 15 knots becoming southeast. waves
1 to 3 feet. 
.saturday...southeast winds 5 to 15 knots becoming south. waves
2 feet or less. 

$$

fzus61 kcle 191935
glfle 
expires:202610200215;;847061

open lake forecast for lake erie
national weather service cleveland oh
335 pm edt mon oct 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... 
high pressure 30.40 inches will maintain influence over lake erie
for the majority of this week. the high may briefly weaken to 
30.20 inches wednesday and thursday.


lez061-169-200215-
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-
335 pm edt mon oct 19 2026

.tonight...west winds 10 knots or less becoming northeast. waves
2 feet or less. 
.tuesday...northeast winds 5 to 15 knots. waves 1 to 3 feet. 
.tuesday night...northeast winds 15 to 20 knots becoming east
10 to 15 knots. waves 1 to 3 feet. 
.wednesday...east winds 10 knots or less becoming northeast.
waves 2 feet or less. 
.wednesday night...northeast winds less than 10 knots becoming
north. waves 1 foot or less. 
.thursday...north winds less than 10 knots becoming northeast
10 to 15 knots. waves 2 feet or less. 
.friday...northeast winds 5 to 15 knots becoming southeast. waves
2 feet or less. 
.saturday...southeast winds 10 knots or less becoming south 10 to
15 knots. waves 2 feet or less. 

$$

fzus61 kcle 191935
glfle 
expires:202610200215;;847059

open lake forecast for lake erie
national weather service cleveland oh
335 pm edt mon oct 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... 
high pressure 30.40 inches will maintain influence over lake erie
for the majority of this week. the high may briefly weaken to 
30.20 inches wednesday and thursday.


lez162-163-200215-
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-
335 pm edt mon oct 19 2026

.tonight...light and variable winds. waves 1 foot or less. 
.tuesday...northeast winds 5 to 10 knots becoming east. waves
2 feet or less. 
.tuesday night...east winds 5 to 15 knots. waves 1 to 3 feet. 
.wednesday...northeast winds 5 to 10 knots becoming light and
variable. waves 1 to 3 feet subsiding to 1 foot or less. 
.wednesday night...light and variable winds. waves 1 foot or
less. 
.thursday...north winds 10 knots or less becoming northeast 10 to
15 knots. waves 2 feet or less. 
.friday...northeast winds 5 to 15 knots becoming southeast. waves
1 to 3 feet. 
.saturday...southeast winds 10 knots or less becoming south.
waves 2 feet or less. 

$$

fzus63 kdtx 191959
glfsc 
expires:202610200400;;847549

lake st clair forecast
national weather service detroit/pontiac mi
359 pm edt mon oct 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...high pressure, 30.40 inches, builds across the great
lakes today then drifts toward southern quebec on tuesday. a dry
cold front washes out over the area wednesday night, then another
area of high pressure then stalls overhead through the end of the
week.


lcz460-200400-
lake st clair-
359 pm edt mon oct 19 2026

.tonight...light and variable winds becoming north 5 to 10 knots
early in the morning. mostly clear. waves 2 feet or less.
.tuesday...northeast winds 5 to 10 knots until late afternoon
becoming light and variable. mostly sunny. waves 2 feet or less.
.tuesday night...northeast winds 5 to 10 knots. mostly clear. waves
2 feet or less.
.wednesday...northeast winds 5 to 10 knots until late afternoon
becoming light and variable. mostly sunny. waves 2 feet or less.
.wednesday night...light and variable winds. clear. waves nearly
calm.
.thursday...north winds 5 to 10 knots becoming northeast 10 to 15
knots in the evening. clear. waves 2 feet or less.
.friday...east winds 10 to 15 knots. clear. waves 2 feet or less.
.saturday...southeast winds 5 to 10 knots. mostly clear. waves 2
feet or less.

$$

fzus63 kdtx 191959
glflh 
expires:202610200400;;847519

open lake forecast for lake huron
national weather service detroit/pontiac mi
359 pm edt mon oct 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...high pressure, 30.40 inches, builds across the great
lakes today then drifts toward southern quebec on tuesday. a dry
cold front washes out over the area wednesday night, then another
area of high pressure then stalls overhead through the end of the
week.


lhz361-362-200400-
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-
359 pm edt mon oct 19 2026

.tonight...light and variable winds becoming northeast 10 to
15 knots. waves 2 feet or less. 
.tuesday...east winds 10 to 15 knots decreasing to 5 to 10 knots
late in the afternoon. waves 2 to 4 feet subsiding to 1 to 3 feet
late in the afternoon. 
.tuesday night...east winds 5 to 10 knots veering to the
southeast after midnight. waves 1 to 3 feet. 
.wednesday...south winds 5 to 10 knots. waves 2 feet or less. 
.wednesday night...south winds 5 to 10 knots veering to the
northwest after midnight. waves 2 feet or less. 
.thursday...northwest winds 5 to 10 knots veering to the
northeast late in the morning...then becoming light and variable
late in the afternoon becoming northeast 5 to 10 knots late in
the evening. waves 2 feet or less. 
.friday...east winds 5 to 10 knots veering to the southeast by
midnight. waves 2 feet or less. 
.saturday...south winds 5 to 10 knots increasing to 10 to
15 knots . waves 1 to 3 feet building to 2 to 4 feet by midnight.


$$

fzus63 kdtx 191959
glflh 
expires:202610200400;;847520

open lake forecast for lake huron
national weather service detroit/pontiac mi
359 pm edt mon oct 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...high pressure, 30.40 inches, builds across the great
lakes today then drifts toward southern quebec on tuesday. a dry
cold front washes out over the area wednesday night, then another
area of high pressure then stalls overhead through the end of the
week.


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-
359 pm edt mon oct 19 2026

.tonight...light and variable winds becoming northeast 5 to
10 knots after midnight. waves 2 feet or less. 
.tuesday...east winds 10 to 15 knots decreasing to 5 to 10 knots
in the afternoon. waves 1 to 3 feet. 
.tuesday night...north winds 5 to 10 knots veering to the east by
midnight...then becoming southeast 10 to 15 knots after midnight.
waves 2 feet or less. 
.wednesday...southeast winds 5 to 10 knots. waves 2 feet or less.
.wednesday night...south winds 5 to 10 knots veering to the
northwest after midnight. waves 2 feet or less. 
.thursday...north winds 5 to 10 knots becoming northeast 10 to
15 knots late in the evening. waves 2 feet or less. 
.friday...east winds 5 to 10 knots becoming southeast 10 to
15 knots by midnight. waves 2 feet or less. 
.saturday...southeast winds 5 to 10 knots becoming south 10 to
15 knots . waves 1 to 3 feet building to 2 to 4 feet by midnight.


$$

fzus63 kmkx 191959
glflm 
expires:202610200330;;847541

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
259 pm cdt mon oct 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...

low pressure around 29.2 over the hudson bay will move east
through northern quebec today as high pressure of 30.4 inches over
the dakotas moves into the great lakes region. the light west to
southwest winds over the lake this morning will become light and 
variable tonight. these light and variable winds will persist
through tuesday afternoon. high pressure will remain across the
great lakes region through the rest of the week keeping winds
light across the lake. southerly winds develop tuesday evening and
persist through wednesday night becoming light and variable
thursday.


lmz080-669-671-673-675-777-779-870-872-874-876-878-200330-
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 pm cdt mon oct 19 2026

sheboygan wi to pentwater mi south...

.tonight...southeast winds 5 to 10 kt becoming east. waves 1 to
2 ft. 
.tuesday...east winds 5 to 10 kt. waves nearly calm. 
.tuesday night...east winds 5 to 10 kt veering to south. waves
1 ft or less. 
.wednesday...south winds 10 to 15 kt. waves 1 to 2 ft. 
.wednesday night...south winds 5 to 10 kt becoming southwest.
waves 1 to 2 ft. 
.thursday...northeast winds 5 to 10 kt. waves nearly calm. 
.thursday night...east winds 5 to 10 kt becoming southeast. waves
1 ft or less building to 1 to 2 ft. 
.friday...southeast winds 10 to 20 kt. waves 2 to 4 ft. 
.saturday...south winds 15 to 25 kt increasing to 30 kt. waves
5 to 8 ft occasionally to 10 ft.  

$$

fzus63 kmkx 191959
glflm 
expires:202610200330;;847540

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
259 pm cdt mon oct 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...

low pressure around 29.2 over the hudson bay will move east
through northern quebec today as high pressure of 30.4 inches over
the dakotas moves into the great lakes region. the light west to
southwest winds over the lake this morning will become light and 
variable tonight. these light and variable winds will persist
through tuesday afternoon. high pressure will remain across the
great lakes region through the rest of the week keeping winds
light across the lake. southerly winds develop tuesday evening and
persist through wednesday night becoming light and variable
thursday.


lmz261-362-364-366-563-565-567-868-200330-
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 pm cdt mon oct 19 2026

sheboygan wi to pentwater mi north...

.tonight...northeast winds 10 to 15 kt becoming east 10 to 20 kt.
waves 1 to 2 ft. 
.tuesday...east winds 10 to 20 kt becoming southeast. waves 1 to
3 ft. 
.tuesday night...southeast winds 10 to 20 kt becoming south 10 to
15 kt. waves 1 to 3 ft. 
.wednesday...southwest winds 10 to 20 kt. waves 1 to 3 ft. 
.wednesday night...southwest winds 10 to 15 kt becoming west 5 to
10 kt. waves 1 to 2 ft. 
.thursday...northeast winds 5 to 10 kt. waves 1 ft or less. 
.thursday night...east winds 5 to 10 kt becoming southeast. waves
1 to 2 ft. 
.friday...southeast winds 10 to 20 kt becoming south. waves 2 to
4 ft. 
.saturday...south winds 15 to 25 kt increasing to 30 kt. waves
5 to 8 ft occasionally to 10 ft.  

$$

fzus63 kmqt 192001
glfls 
expires:202610200800;;847582

open lake forecast for lake superior
national weather service marquette mi
400 pm edt mon oct 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...

a 30.4 inch high will remain over lake superior through tonight and 
then shift east on tuesday. this high builds further to 30.5 inches 
over western quebec tuesday afternoon as a 29.9 inch low moves from 
northern manitoba into western hudson bay. wednesday morning, the 
high weakens lightly to 30.4 inches but expands over much of 
southern quebec while the low deepens to 29.7 inches over eastern 
hudson bay. meanwhile, a 30.3 inch high moves over the north 
dakota/manitoba/saskatchewan tripoint. with the low moving across 
northern quebec, the highs merge into a 30.3 inch high over the 
upper great lakes by thursday morning. by friday afternoon, the high 
builds to 30.5 inches over the ontario/quebec line as a 29.4 inch 
low moves into eastern montana. saturday afternoon, the high builds 
further to 30.6 inches over new england as the 29.4 inch low 
approaches lake winnipeg.




lsz162-200800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm edt mon oct 19 2026 /300 pm cdt mon oct 19 2026/

.late this afternoon...northeast winds 10 to 20 knots. waves calm
to 2 feet. 
.tonight...east winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...southeast winds 5 to 15 knots backing east late. waves
calm to 2 feet. 
.tuesday night...east winds 5 to 15 knots veering southwest after
midnight. waves calm to 2 feet. 
.wednesday...southwest winds 5 to 15 knots veering west by mid
afternoon. waves calm to 2 feet. 
.wednesday night...northeast winds less than 10 knots increasing
to 5 to 15 knots after midnight. waves calm to 2 feet. 
.thursday...east winds 5 to 15 knots. waves calm to 2 feet. 
.thursday night...northeast winds 5 to 15 knots veering east
after midnight. waves calm to 2 feet. 
.friday...east winds 5 to 15 knots becoming south 15 to 25 knots.
waves building to 1 to 3 feet. 
.saturday...south winds 20 to 30 knots veering southwest. waves
building to 3 to 6 feet occasionally to 8 feet, then subsiding to
2 to 4 feet. 

$$

fzus63 kmqt 192001
glfls 
expires:202610200800;;847583

open lake forecast for lake superior
national weather service marquette mi
400 pm edt mon oct 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...

a 30.4 inch high will remain over lake superior through tonight and 
then shift east on tuesday. this high builds further to 30.5 inches 
over western quebec tuesday afternoon as a 29.9 inch low moves from 
northern manitoba into western hudson bay. wednesday morning, the 
high weakens lightly to 30.4 inches but expands over much of 
southern quebec while the low deepens to 29.7 inches over eastern 
hudson bay. meanwhile, a 30.3 inch high moves over the north 
dakota/manitoba/saskatchewan tripoint. with the low moving across 
northern quebec, the highs merge into a 30.3 inch high over the 
upper great lakes by thursday morning. by friday afternoon, the high 
builds to 30.5 inches over the ontario/quebec line as a 29.4 inch 
low moves into eastern montana. saturday afternoon, the high builds 
further to 30.6 inches over new england as the 29.4 inch low 
approaches lake winnipeg.




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-
400 pm edt mon oct 19 2026

.late this afternoon...northeast winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...east winds 5 to 15 knots veering southeast late. waves
calm to 2 feet. 
.tuesday...southeast winds 5 to 15 knots backing east late. waves
calm to 2 feet. 
.tuesday night...south winds 10 to 20 knots veering southwest
after midnight. waves building to 1 to 3 feet. 
.wednesday...southwest winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.wednesday night...northeast winds less than 10 knots becoming
east 5 to 15 knots after midnight. waves calm to 2 feet. 
.thursday...east winds less than 10 knots increasing to 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.thursday night...east winds 5 to 15 knots veering southeast
after midnight. waves calm to 2 feet. 
.friday...southeast winds 5 to 15 knots becoming south 15 to
25 knots. waves building to 2 to 4 feet. 
.saturday...south winds 20 to 30 knots veering southwest. waves
building to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 192001
glfls 
expires:202610200800;;847584

open lake forecast for lake superior
national weather service marquette mi
400 pm edt mon oct 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...

a 30.4 inch high will remain over lake superior through tonight and 
then shift east on tuesday. this high builds further to 30.5 inches 
over western quebec tuesday afternoon as a 29.9 inch low moves from 
northern manitoba into western hudson bay. wednesday morning, the 
high weakens lightly to 30.4 inches but expands over much of 
southern quebec while the low deepens to 29.7 inches over eastern 
hudson bay. meanwhile, a 30.3 inch high moves over the north 
dakota/manitoba/saskatchewan tripoint. with the low moving across 
northern quebec, the highs merge into a 30.3 inch high over the 
upper great lakes by thursday morning. by friday afternoon, the high 
builds to 30.5 inches over the ontario/quebec line as a 29.4 inch 
low moves into eastern montana. saturday afternoon, the high builds 
further to 30.6 inches over new england as the 29.4 inch low 
approaches lake winnipeg.




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

.late this afternoon...northeast winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...east winds 5 to 15 knots veering southeast late. waves
calm to 2 feet. 
.tuesday...southeast winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday night...south winds 10 to 20 knots veering southwest
late. waves building to 1 to 3 feet. 
.wednesday...southwest winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.wednesday night...north winds less than 10 knots veering
northeast after midnight. waves calm to 2 feet. 
.thursday...east winds less than 10 knots increasing to 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.thursday night...southeast winds 5 to 15 knots. waves calm to
2 feet. 
.friday...south winds 10 to 20 knots. waves building to 2 to
4 feet. 
.saturday...south winds 20 to 30 knots veering southwest. waves
building to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 192001
glfls 
expires:202610200800;;847585

open lake forecast for lake superior
national weather service marquette mi
400 pm edt mon oct 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...

a 30.4 inch high will remain over lake superior through tonight and 
then shift east on tuesday. this high builds further to 30.5 inches 
over western quebec tuesday afternoon as a 29.9 inch low moves from 
northern manitoba into western hudson bay. wednesday morning, the 
high weakens lightly to 30.4 inches but expands over much of 
southern quebec while the low deepens to 29.7 inches over eastern 
hudson bay. meanwhile, a 30.3 inch high moves over the north 
dakota/manitoba/saskatchewan tripoint. with the low moving across 
northern quebec, the highs merge into a 30.3 inch high over the 
upper great lakes by thursday morning. by friday afternoon, the high 
builds to 30.5 inches over the ontario/quebec line as a 29.4 inch 
low moves into eastern montana. saturday afternoon, the high builds 
further to 30.6 inches over new england as the 29.4 inch low 
approaches lake winnipeg.




lsz265-200800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 pm edt mon oct 19 2026

.late this afternoon...northeast winds 10 to 20 knots. waves calm
to 2 feet. 
.tonight...east winds 5 to 15 knots veering southeast late. waves
calm to 2 feet. 
.tuesday...southeast winds 5 to 15 knots increasing to 10 to
20 knots late. waves calm to 2 feet. 
.tuesday night...south winds 10 to 20 knots increasing to 15 to
25 knots after midnight, then veering southwest late. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet. 
.wednesday...southwest winds 10 to 20 knots becoming northwest
5 to 15 knots by mid afternoon. waves calm to 2 feet. 
.wednesday night...north winds 5 to 15 knots veering northeast
after midnight. waves calm to 2 feet. 
.thursday...east winds 5 to 15 knots. waves calm to 2 feet. 
.thursday night...southeast winds 10 to 20 knots veering south
after midnight. waves calm to 2 feet. 
.friday...south winds 10 to 20 knots increasing to 15 to
25 knots. waves building to 2 to 4 feet. 
.saturday...south gales to 35 knots diminishing to 20 to
30 knots. waves building to 3 to 6 feet occasionally to 8 feet,
then subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 192001
glfls 
expires:202610200800;;847586

open lake forecast for lake superior
national weather service marquette mi
400 pm edt mon oct 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...

a 30.4 inch high will remain over lake superior through tonight and 
then shift east on tuesday. this high builds further to 30.5 inches 
over western quebec tuesday afternoon as a 29.9 inch low moves from 
northern manitoba into western hudson bay. wednesday morning, the 
high weakens lightly to 30.4 inches but expands over much of 
southern quebec while the low deepens to 29.7 inches over eastern 
hudson bay. meanwhile, a 30.3 inch high moves over the north 
dakota/manitoba/saskatchewan tripoint. with the low moving across 
northern quebec, the highs merge into a 30.3 inch high over the 
upper great lakes by thursday morning. by friday afternoon, the high 
builds to 30.5 inches over the ontario/quebec line as a 29.4 inch 
low moves into eastern montana. saturday afternoon, the high builds 
further to 30.6 inches over new england as the 29.4 inch low 
approaches lake winnipeg.




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-
400 pm edt mon oct 19 2026

.late this afternoon...north winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...northeast winds 5 to 15 knots veering east after
midnight. waves calm to 2 feet. 
.tuesday...southeast winds 10 to 20 knots. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 
.tuesday night...south winds 15 to 25 knots veering southwest
late. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 
.wednesday...southwest winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.wednesday night...north winds 5 to 15 knots veering northeast
after midnight. waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots veering east by mid
afternoon. waves calm to 2 feet. 
.thursday night...southeast winds 5 to 15 knots becoming south
10 to 20 knots after midnight. waves calm to 2 feet. 
.friday...south winds 15 to 25 knots increasing to 20 to
30 knots. waves building to 3 to 5 feet occasionally to 7 feet. 
.saturday...south gales to 40 knots. waves building to 4 to
7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 

$$

fzus63 kmqt 192001
glfls 
expires:202610200800;;847587

open lake forecast for lake superior
national weather service marquette mi
400 pm edt mon oct 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...

a 30.4 inch high will remain over lake superior through tonight and 
then shift east on tuesday. this high builds further to 30.5 inches 
over western quebec tuesday afternoon as a 29.9 inch low moves from 
northern manitoba into western hudson bay. wednesday morning, the 
high weakens lightly to 30.4 inches but expands over much of 
southern quebec while the low deepens to 29.7 inches over eastern 
hudson bay. meanwhile, a 30.3 inch high moves over the north 
dakota/manitoba/saskatchewan tripoint. with the low moving across 
northern quebec, the highs merge into a 30.3 inch high over the 
upper great lakes by thursday morning. by friday afternoon, the high 
builds to 30.5 inches over the ontario/quebec line as a 29.4 inch 
low moves into eastern montana. saturday afternoon, the high builds 
further to 30.6 inches over new england as the 29.4 inch low 
approaches lake winnipeg.




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

.late this afternoon...north winds 10 to 20 knots. waves calm to
2 feet. 
.tonight...north winds 10 to 20 knots veering east after
midnight. waves calm to 2 feet. 
.tuesday...southeast winds 10 to 20 knots. waves building to 1 to
3 feet. 
.tuesday night...south winds 15 to 25 knots diminishing to 10 to
20 knots late. waves 1 to 3 feet. 
.wednesday...southwest winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.wednesday night...north winds 5 to 15 knots veering northeast
after midnight. waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots. waves calm to 2 feet. 
.thursday night...east winds 5 to 15 knots becoming southeast
10 to 20 knots after midnight. waves calm to 2 feet. 
.friday...south winds 10 to 20 knots increasing to 15 to
25 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 
.saturday...south winds 20 to 30 knots. waves building to 3 to
5 feet occasionally to 7 feet. 

$$