fzus61 kbuf 190802
glflo 
expires:202610191500;;353216

open lake forecast for lake ontario
national weather service buffalo ny
402 am 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...a ridge averaging 30.2 inches affects the lake through 
friday. one embedded high pressure center will weaken over atlantic 
canada today. another embedded and reinforcing high pressure center 
will move from near the border of the north-central united states 
and canada to near the canadian maritimes through wednesday. a third 
embedded and reinforcing high pressure center will wobble eastward 
from the canadian prairies to northern ontario this wednesday 
through thursday and then wobble southeastward to southern ontario 
this thursday night through friday.


loz063>065-191500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt mon oct 19 2026

.today...southwest winds 15 to 20 knots becoming west 5 to
15 knots. waves 1 to 3 feet. 
.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 10 to 15 knots. waves 1 to
3 feet. 
.wednesday...northeast winds 10 knots or less becoming northwest.
waves 2 feet or less. 
.thursday...north winds 5 to 10 knots becoming northeast and
increasing to 15 to 20 knots. waves 1 foot or less building to
2 to 4 feet. 
.friday...northeast winds 15 to 20 knots becoming southeast 5 to
15 knots. waves 2 to 4 feet subsiding to 1 foot or less. 

$$

fzus61 kbuf 190802
glflo 
expires:202610191500;;353215

open lake forecast for lake ontario
national weather service buffalo ny
402 am 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...a ridge averaging 30.2 inches affects the lake through 
friday. one embedded high pressure center will weaken over atlantic 
canada today. another embedded and reinforcing high pressure center 
will move from near the border of the north-central united states 
and canada to near the canadian maritimes through wednesday. a third 
embedded and reinforcing high pressure center will wobble eastward 
from the canadian prairies to northern ontario this wednesday 
through thursday and then wobble southeastward to southern ontario 
this thursday night through friday.


loz062-191500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt mon oct 19 2026

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

$$

fzus61 kcle 190732
glfle 
expires:202610191415;;352377

open lake forecast for lake erie
national weather service cleveland oh
332 am 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 will persist through this week, weakening slightly 
from 30.50 inches to 30.30 inches.


lez162-163-191415-
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-
332 am edt mon oct 19 2026

.today...southwest winds 5 to 10 knots becoming light and
variable. waves 1 foot or less. 
.tonight...light and variable winds. waves 1 foot or less. 
.tuesday...northeast winds 5 to 10 knots becoming east. waves
1 foot or less. 
.tuesday night...east winds 5 to 15 knots. waves 1 to 3 feet. 
.wednesday...northeast winds 10 knots or less becoming north.
waves 2 feet or less. 
.thursday...north winds 10 knots or less becoming northeast.
waves 2 feet or less. 
.friday...northeast winds 10 to 15 knots becoming southeast.
waves 1 to 3 feet building to 2 to 4 feet, then subsiding to 1 to
3 feet. 

$$

fzus61 kcle 190732
glfle 
expires:202610191415;;352378

open lake forecast for lake erie
national weather service cleveland oh
332 am 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 will persist through this week, weakening slightly 
from 30.50 inches to 30.30 inches.


lez164>168-191415-
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-
332 am edt mon oct 19 2026

.today...southwest winds 10 knots or less becoming west. waves
2 feet or less. 
.tonight...light and variable winds becoming northeast 5 to
10 knots. waves 1 foot or less. 
.tuesday...northeast winds 5 to 15 knots. waves 2 feet or less. 
.tuesday night...northeast winds 15 to 20 knots becoming east
10 to 15 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.wednesday...east winds 5 to 10 knots becoming north. waves 1 to
3 feet subsiding to 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
2 to 4 feet. 

$$

fzus61 kcle 190732
glfle 
expires:202610191415;;352379

open lake forecast for lake erie
national weather service cleveland oh
332 am 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 will persist through this week, weakening slightly 
from 30.50 inches to 30.30 inches.


lez061-169-191415-
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-
332 am edt mon oct 19 2026

.today...southwest winds 5 to 10 knots becoming west. waves
2 feet or less. 
.tonight...west winds 10 knots or less becoming northeast. waves
1 foot or less. 
.tuesday...northeast winds 5 to 15 knots. waves 2 feet or less. 
.tuesday night...northeast winds 10 to 15 knots becoming east.
waves 1 to 3 feet. 
.wednesday...east winds 10 knots or less becoming northeast.
waves 2 feet or less. 
.thursday...north winds less than 10 knots becoming northeast
10 to 15 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. 

$$

fzus63 kdtx 190734
glfsc 
expires:202610191545;;352468

lake st clair forecast
national weather service detroit/pontiac mi
334 am 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.
another area of high pressure then stalls overhead through the
end of the week.


lcz460-191545-
lake st clair-
334 am edt mon oct 19 2026

.today...southwest winds 5 to 10 knots in the morning becoming light
and variable. sunny. waves 2 feet or less.
.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 in the morning becoming
light and variable. clear. waves 2 feet or less.
.thursday...northeast winds 5 to 10 knots. clear. waves 2 feet or
less.
.friday...east winds 10 to 15 knots. clear. waves 2 feet or less.

$$

fzus63 kdtx 190733
glflh 
expires:202610191545;;352434

open lake forecast for lake huron
national weather service detroit/pontiac mi
333 am 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.
another area of high pressure then stalls overhead through the
end of the week.


lhz462>464-191545-
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-
333 am edt mon oct 19 2026

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


$$

fzus63 kdtx 190733
glflh 
expires:202610191545;;352433

open lake forecast for lake huron
national weather service detroit/pontiac mi
333 am 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.
another area of high pressure then stalls overhead through the
end of the week.


lhz362-363-191545-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
333 am edt mon oct 19 2026

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


$$

fzus63 kdtx 190733
glflh 
expires:202610191545;;352432

open lake forecast for lake huron
national weather service detroit/pontiac mi
333 am 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.
another area of high pressure then stalls overhead through the
end of the week.


lhz361-191545-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
333 am edt mon oct 19 2026

.today...southwest winds 10 to 15 knots becoming light and
variable. waves 1 to 3 feet. 
.tonight...west winds 5 to 10 knots veering to the north by
midnight...then becoming northeast 10 to 15 knots early in the
morning. waves 2 feet or less. 
.tuesday...east winds 10 to 15 knots. waves 2 to 4 feet. 
.tuesday night...east winds 10 to 15 knots becoming southeast
5 to 10 knots in the late evening and overnight. waves 1 to
3 feet. 
.wednesday...south winds 5 to 10 knots in the morning becoming
light and variable. waves 2 feet or less. 
.thursday...northwest winds 5 to 10 knots early in the morning
becoming light and variable...then becoming east 5 to 10 knots by
midnight. waves 2 feet or less. 
.friday...southeast winds 5 to 10 knots. waves 2 feet or less. 


$$

fzus63 kmkx 190755
glflm 
expires:202610191530;;352964

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
255 am 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...

strong low pressure around 29.4 inches will continue to move over
out of the hudson bay area today while high pressure around 30.2 
slowly slides east and out of the northeast us and over the 
atlantic. the gales have subsided as the low over hudson bay has 
pushed east and secondary weak high pressure around 30.4 inches 
develops over the western great lakes today. light and variable 
winds will develop across lake michigan tonight through tuesday 
afternoon. transitioning periods of high pressure in the region 
expected the rest of the week will keep winds largely light and 
variable through the rest of the week.


lmz080-669-671-673-675-777-779-870-872-874-876-878-191530-
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-
255 am cdt mon oct 19 2026

sheboygan wi to pentwater mi south...

.today...southwest winds 10 to 15 kt diminishing to 5 to 10 kt
early this afternoon, then becoming south late. waves 3 to 5 ft
subsiding to 1 to 2 ft. 
.tonight...southeast winds 5 to 10 kt becoming east. waves 1 to
2 ft. 
.tuesday...east winds 5 to 10 kt. waves 1 ft or less. 
.tuesday night...east winds 5 to 10 kt becoming south. waves
nearly calm building to 1 to 2 ft. 
.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...east winds 5 to 10 kt. waves nearly calm. 
.friday...southeast winds 10 to 20 kt. waves 2 to 4 ft.  

$$

fzus63 kmkx 190755
glflm 
expires:202610191530;;352963

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
255 am 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...

strong low pressure around 29.4 inches will continue to move over
out of the hudson bay area today while high pressure around 30.2 
slowly slides east and out of the northeast us and over the 
atlantic. the gales have subsided as the low over hudson bay has 
pushed east and secondary weak high pressure around 30.4 inches 
develops over the western great lakes today. light and variable 
winds will develop across lake michigan tonight through tuesday 
afternoon. transitioning periods of high pressure in the region 
expected the rest of the week will keep winds largely light and 
variable through the rest of the week.


lmz261-362-364-366-563-565-567-868-191530-
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-
255 am cdt mon oct 19 2026

sheboygan wi to pentwater mi north...

.today...west winds 10 to 20 kt diminishing to 10 to 15 kt late
this morning, then becoming northwest early this afternoon
becoming east late. waves 4 to 6 ft occasionally to 8 ft
subsiding to 1 to 3 ft. 
.tonight...northeast winds 10 to 15 kt becoming east. waves 1 to
2 ft. 
.tuesday...east winds 10 to 20 kt becoming southeast 10 to 15 kt.
waves 1 to 3 ft. 
.tuesday night...southeast winds 10 to 20 kt becoming south.
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. 
.friday...southeast winds 10 to 20 kt becoming south. waves 2 to
4 ft.  

$$

fzus63 kmqt 190801
glfls 
expires:202610192000;;353133

open lake forecast for lake superior
national weather service marquette mi
400 am 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...

this morning, lake superior is between a 30.6 inch high over nova 
scotia, a 30.3 inch high over north dakota, and a 29.3 inch low over 
hudson bay. throughout the day today, all features march east, with 
the plains high shifting over lake superior at 30.4 inches. 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.




lsz162-192000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt mon oct 19 2026 /300 am cdt mon oct 19 2026/

.early this morning...northwest winds 5 to 15 knots. waves calm
to 2 feet. 
.today...north winds 5 to 15 knots veering northeast in the
afternoon, then increasing to 10 to 20 knots late. 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...south 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 10 to 20 knots diminishing to 5 to
15 knots. waves calm to 2 feet. 
.friday...southeast winds 10 to 20 knots becoming south 15 to
25 knots. waves building to 2 to 4 feet. 

$$

fzus63 kmqt 190801
glfls 
expires:202610192000;;353134

open lake forecast for lake superior
national weather service marquette mi
400 am 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...

this morning, lake superior is between a 30.6 inch high over nova 
scotia, a 30.3 inch high over north dakota, and a 29.3 inch low over 
hudson bay. throughout the day today, all features march east, with 
the plains high shifting over lake superior at 30.4 inches. 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.




lsz263-192000-
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 mon oct 19 2026

.early this morning...northwest winds 5 to 15 knots. waves 1 to
3 feet subsiding to calm to 2 feet. 
.today...northwest winds 5 to 15 knots veering northeast in the
afternoon. 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 5 to 15 knots veering west 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 5 to 15 knots veering southeast. waves
calm to 2 feet. 
.friday...south winds 10 to 20 knots increasing to 20 to
30 knots. waves building to 2 to 4 feet. 

$$

fzus63 kmqt 190801
glfls 
expires:202610192000;;353135

open lake forecast for lake superior
national weather service marquette mi
400 am 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...

this morning, lake superior is between a 30.6 inch high over nova 
scotia, a 30.3 inch high over north dakota, and a 29.3 inch low over 
hudson bay. throughout the day today, all features march east, with 
the plains high shifting over lake superior at 30.4 inches. 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.




lsz264-192000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 am edt mon oct 19 2026

.early this morning...northwest winds 5 to 15 knots. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.today...northwest winds 5 to 15 knots diminishing to less than
10 knots in the afternoon, then becoming north 5 to 15 knots
late. waves subsiding to 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
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...north winds less than 10 knots veering
northeast after midnight. waves calm to 2 feet. 
.thursday...east winds 5 to 15 knots veering southeast. waves
calm to 2 feet. 
.friday...south winds 15 to 25 knots. waves building to 3 to
5 feet occasionally to 7 feet. 

$$

fzus63 kmqt 190801
glfls 
expires:202610192000;;353136

open lake forecast for lake superior
national weather service marquette mi
400 am 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...

this morning, lake superior is between a 30.6 inch high over nova 
scotia, a 30.3 inch high over north dakota, and a 29.3 inch low over 
hudson bay. throughout the day today, all features march east, with 
the plains high shifting over lake superior at 30.4 inches. 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.




lsz265-192000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am edt mon oct 19 2026

.early this morning...west winds 10 to 20 knots. waves calm to
2 feet. 
.today...northwest winds 5 to 15 knots veering north in the
afternoon, then becoming northeast 10 to 20 knots late. 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 veering southwest
after midnight. waves calm to 2 feet. 
.wednesday...southwest winds 10 to 20 knots becoming west 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 becoming southeast 10 to
20 knots. waves calm to 2 feet. 
.friday...south winds 15 to 25 knots increasing to 20 to
30 knots. waves building to 2 to 4 feet. 

$$

fzus63 kmqt 190801
glfls 
expires:202610192000;;353137

open lake forecast for lake superior
national weather service marquette mi
400 am 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...

this morning, lake superior is between a 30.6 inch high over nova 
scotia, a 30.3 inch high over north dakota, and a 29.3 inch low over 
hudson bay. throughout the day today, all features march east, with 
the plains high shifting over lake superior at 30.4 inches. 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.




lsz266-192000-
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 mon oct 19 2026

.early this morning...northwest winds 10 to 20 knots. waves 2 to
4 feet. 
.today...northwest winds 10 to 20 knots becoming north 5 to
15 knots in the afternoon. waves subsiding to calm to 2 feet. 
.tonight...northeast winds less than 10 knots becoming east 5 to
15 knots after midnight. waves calm to 2 feet. 
.tuesday...southeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. waves calm to 2 feet. 
.tuesday night...south winds 15 to 25 knots. 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 5 to 15 knots veering northeast
after midnight. waves calm to 2 feet. 
.thursday...east winds 5 to 15 knots becoming southeast 10 to
20 knots. waves calm to 2 feet. 
.friday...south winds 15 to 25 knots increasing to gales to
35 knots. waves building to 3 to 5 feet occasionally to 7 feet. 

$$

fzus63 kmqt 190801
glfls 
expires:202610192000;;353138

open lake forecast for lake superior
national weather service marquette mi
400 am 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...

this morning, lake superior is between a 30.6 inch high over nova 
scotia, a 30.3 inch high over north dakota, and a 29.3 inch low over 
hudson bay. throughout the day today, all features march east, with 
the plains high shifting over lake superior at 30.4 inches. 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.




lsz267-192000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am edt mon oct 19 2026

.early this morning...west winds 10 to 20 knots. waves 2 to
4 feet. 
.today...northwest winds 10 to 20 knots veering north in the
afternoon. waves subsiding to calm to 2 feet. 
.tonight...north winds 5 to 15 knots veering east after midnight,
then increasing to 10 to 20 knots late. waves calm to 2 feet. 
.tuesday...southeast winds 10 to 20 knots. waves calm to 2 feet. 
.tuesday night...south winds 15 to 25 knots. waves building to
1 to 3 feet, then subsiding to calm to 2 feet. 
.wednesday...southwest winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. waves building to 1 to 3 feet, then
subsiding to calm to 2 feet. 
.wednesday night...northwest winds 5 to 15 knots veering
northeast after midnight. waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots veering southeast.
waves calm to 2 feet. 
.friday...southeast winds 10 to 20 knots becoming south 15 to
25 knots. waves building to 2 to 4 feet. 

$$