fzus63 kdtx 181357
glflh 
expires:202605182200;;768727

open lake forecast for lake huron
national weather service detroit/pontiac mi
957 am edt mon may 18 2026

for waters beyond five nautical miles off shore on lake huron

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...a warm front lifts across lake huron this morning,
with southerly flow expanding across all of the local waters.
strong to severe thunderstorms are possible this afternoon-
evening and again tuesday as a cold front sweeps across the
region. high pressure, 30.50 inches, then builds in mid-week.


lhz361-182200-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
957 am edt mon may 18 2026

.rest of today...southeast winds 10 to 15 knots decreasing to
5 to 10 knots in the afternoon. a chance of showers and
thunderstorms in the afternoon. waves 3 to 5 feet. 
.tonight...south winds 5 to 10 knots backing to the southeast in
the late evening and overnight. a chance of showers and
thunderstorms. waves 2 to 4 feet subsiding to 1 to 3 feet in the
late evening and overnight. 
.tuesday...south winds 10 to 15 knots increasing to 15 to
20 knots in the late morning and early afternoon...then veering
to the southwest early in the afternoon. showers likely and a
chance of thunderstorms in the morning...then showers in the
afternoon. waves 3 to 5 feet building to 4 to 6 feet early in the
afternoon. waves occasionally around 8 feet. 
.tuesday night...northwest winds 20 to 25 knots. gusts to
30 knots in the late evening and overnight. waves 6 to 9 feet.
waves occasionally around 12 feet. 
.wednesday...northwest winds 20 to 25 knots with gusts to around
30 knots becoming north 5 to 10 knots. waves 5 to 7 feet
subsiding to 2 to 4 feet late in the evening. waves occasionally
around 10 feet. 
.thursday...light and variable winds becoming east 5 to 10 knots
. waves 2 feet or less. 
.friday...southeast winds 5 to 10 knots becoming east 10 to
15 knots. waves 2 feet or less building to 2 to 4 feet. 


$$

fzus63 kdtx 181357
glflh 
expires:202605182200;;768728

open lake forecast for lake huron
national weather service detroit/pontiac mi
957 am edt mon may 18 2026

for waters beyond five nautical miles off shore on lake huron

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...a warm front lifts across lake huron this morning,
with southerly flow expanding across all of the local waters.
strong to severe thunderstorms are possible this afternoon-
evening and again tuesday as a cold front sweeps across the
region. high pressure, 30.50 inches, then builds in mid-week.


lhz362-363-182200-
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-
957 am edt mon may 18 2026

.rest of today...south winds 15 to 20 knots. a chance of showers
and thunderstorms in the afternoon. waves 4 to 6 feet. waves
occasionally around 8 feet. 
.tonight...south winds 15 to 20 knots decreasing to 10 to
15 knots in the late evening and overnight. a chance of showers
and thunderstorms in the evening...then a chance of showers after
midnight. waves 4 to 6 feet. waves occasionally around 8 feet. 
.tuesday...south winds 15 to 20 knots increasing to 20 to
25 knots in the late morning and afternoon. a chance of showers
in the afternoon. waves 5 to 7 feet. waves occasionally around
10 feet. 
.tuesday night...southwest winds 15 to 20 knots veering to the
northwest in the late evening and overnight. a chance of showers
in the evening. waves 6 to 9 feet. waves occasionally around
12 feet. 
.wednesday...northwest winds 15 to 20 knots veering to the north
late in the afternoon...then decreasing to 10 to 15 knots late in
the evening. waves 6 to 9 feet subsiding to 4 to 6 feet late in
the evening. waves occasionally around 12 feet. 
.thursday...north winds 5 to 10 knots veering to the northeast by
midnight. waves 2 to 4 feet subsiding to 2 feet or less. 
.friday...east 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 181357
glflh 
expires:202605182200;;768729

open lake forecast for lake huron
national weather service detroit/pontiac mi
957 am edt mon may 18 2026

for waters beyond five nautical miles off shore on lake huron

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...a warm front lifts across lake huron this morning,
with southerly flow expanding across all of the local waters.
strong to severe thunderstorms are possible this afternoon-
evening and again tuesday as a cold front sweeps across the
region. high pressure, 30.50 inches, then builds in mid-week.


lhz462>464-182200-
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-
957 am edt mon may 18 2026

.rest of today...south winds 15 to 20 knots. waves 3 to 5 feet. 
.tonight...south winds 10 to 15 knots. showers likely and a
chance of thunderstorms in the evening...then a chance of showers
after midnight. waves 3 to 5 feet. 
.tuesday...south winds 15 to 20 knots. a chance of showers and
thunderstorms in the afternoon. waves 3 to 5 feet. 
.tuesday night...southwest winds 15 to 20 knots. a chance of
showers and thunderstorms in the evening. waves 3 to 5 feet. 
.wednesday...north winds 10 to 15 knots. waves 4 to 6 feet. waves
occasionally around 8 feet. 
.thursday...north winds 5 to 10 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.friday...east 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 kmkx 181414
glflm 
expires:202605182115;;769821

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
914 am cdt mon may 18 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...

areas of dense fog over the lake this morning with breezy south 
to southwest winds today. these winds will increase slightly
across the lake late tonight and remain breezy ahead of the cold 
frontal passage expected tuesday afternoon as the low pressure
system around 29.6 inches swings northeast of the lake into
ontario. high pressure around 30.4 inches will push in with light
and variable winds taking hold from late wednesday into thursday.


lmz261-362-364-366-563-565-567-868-182115-
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-
914 am cdt mon may 18 2026

sheboygan wi to pentwater mi north...

.rest of today...south winds to 30 kt. patchy fog. chance of
showers and slight chance of thunderstorms late this morning,
then slight chance of showers and thunderstorms this afternoon.
waves 4 to 6 ft occasionally to 8 ft. 
.tonight...south winds 15 to 25 kt increasing to 30 kt. patchy
dense fog in the evening, then areas of dense fog overnight.
chance of rain showers and thunderstorms overnight. waves 4 to
7 ft occasionally to 9 ft building to 5 to 8 ft occasionally to
10 ft. 
.tuesday...south winds to 30 kt veering to west. chance of rain
showers. waves 7 to 10 ft occasionally to 13 ft. 
.tuesday night...northwest winds 15 to 25 kt. waves 4 to 7 ft
occasionally to 9 ft subsiding to 3 to 5 ft. 
.wednesday...north winds 15 to 25 kt diminishing to 10 to 20 kt.
waves 2 to 4 ft. 
.wednesday night...northeast winds 10 to 20 kt diminishing to
5 to 10 kt. waves 1 to 3 ft. 
.thursday...east winds 5 to 10 kt becoming northeast 10 to 20 kt.
waves 1 to 2 ft. 
.friday...southeast winds 10 to 20 kt becoming east. waves 1 to
3 ft.  

$$

fzus63 kmkx 181414
glflm 
expires:202605182115;;769822

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
914 am cdt mon may 18 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...

areas of dense fog over the lake this morning with breezy south 
to southwest winds today. these winds will increase slightly
across the lake late tonight and remain breezy ahead of the cold 
frontal passage expected tuesday afternoon as the low pressure
system around 29.6 inches swings northeast of the lake into
ontario. high pressure around 30.4 inches will push in with light
and variable winds taking hold from late wednesday into thursday.


lmz080-669-671-673-675-777-779-870-872-874-876-878-182115-
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-
914 am cdt mon may 18 2026

sheboygan wi to pentwater mi south...

.rest of today...south winds 15 to 25 kt. chance of showers and
slight chance of thunderstorms late this morning, then slight
chance of showers and thunderstorms this afternoon. patchy fog
this afternoon. waves 4 to 6 ft occasionally to 8 ft. 
.tonight...south winds 15 to 25 kt increasing to 30 kt. patchy
fog in the evening, then patchy dense fog overnight. slight
chance of showers and thunderstorms in the evening, then chance
of showers and thunderstorms overnight. waves 4 to 7 ft
occasionally to 9 ft building to 5 to 8 ft occasionally to 10 ft.
.tuesday...south winds to 30 kt becoming west 15 to 25 kt. waves
6 to 9 ft occasionally to 12 ft. 
.tuesday night...northwest winds 10 to 20 kt becoming north.
waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft. 
.wednesday...north winds 10 to 20 kt increasing to 15 to 25 kt.
waves 3 to 5 ft. 
.wednesday night...northeast winds 10 to 20 kt. waves 3 to 5 ft
subsiding to 2 to 4 ft. 
.thursday...east winds 10 to 20 kt becoming northeast. waves 2 to
4 ft. 
.friday...east winds 10 to 20 kt diminishing to 10 to 15 kt.
waves 2 to 4 ft.  

$$

fzus63 kmqt 181402
glfls 
expires:202605182000;;768923

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon may 18 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... 

low pressure will weaken over the lake today with another low 
pressure following it, reaching lake superior by tuesday morning at 
29.6 inches. afterwards, a 30.2 inch high over the northern plains 
builds to 30.4 inches tuesday night into wednesday as it traverses 
eastwards into the upper great lakes. the high pressure shifts east 
on thursday while leaving lingering ridging of at least 30.1 inches 
over lake superior into friday. a 29.9 inch low lifts into the great 
lakes from the southern plains for saturday, but 30.1 inch ridging 
maintains over lake superior.



lsz162-182000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt mon may 18 2026 /901 am cdt mon may 18 2026/

.rest of today...north winds 5 to 15 knots veering northeast in
the afternoon. patchy fog. a slight chance of rain showers by mid
afternoon. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tonight...northeast winds 15 to 25 knots. patchy fog. a chance
of rain showers through midnight. a slight chance of
thunderstorms. rain showers after midnight. waves building to
4 to 7 feet occasionally to 9 feet. 
.tuesday...north winds 10 to 20 knots backing west in the
afternoon. a chance of rain showers through early afternoon.
waves subsiding to 1 to 3 feet. 
.tuesday night...northwest winds 5 to 15 knots. waves subsiding
to calm to 2 feet. 
.wednesday...southwest winds 5 to 15 knots backing south by mid
afternoon. waves calm to 2 feet. 
.wednesday night...southeast winds 5 to 15 knots veering south
after midnight. waves calm to 2 feet. 
.thursday...east winds 5 to 15 knots. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 
.friday...east winds 5 to 15 knots backing northeast. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet. 

$$

fzus63 kmqt 181402
glfls 
expires:202605182000;;768924

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon may 18 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... 

low pressure will weaken over the lake today with another low 
pressure following it, reaching lake superior by tuesday morning at 
29.6 inches. afterwards, a 30.2 inch high over the northern plains 
builds to 30.4 inches tuesday night into wednesday as it traverses 
eastwards into the upper great lakes. the high pressure shifts east 
on thursday while leaving lingering ridging of at least 30.1 inches 
over lake superior into friday. a 29.9 inch low lifts into the great 
lakes from the southern plains for saturday, but 30.1 inch ridging 
maintains over lake superior.



lsz263-182000-
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-
1001 am edt mon may 18 2026

.rest of today...north winds 5 to 15 knots becoming northeast
10 to 20 knots late. patchy fog. a slight chance of rain showers
by mid afternoon. waves 3 to 5 feet occasionally to 7 feet
subsiding to 1 to 3 feet. 
.tonight...northeast winds 15 to 25 knots. patchy fog. a chance
of rain showers through midnight. a slight chance of
thunderstorms. rain showers after midnight. waves building to
5 to 8 feet occasionally to 10 feet. 
.tuesday...north winds 15 to 25 knots becoming west 10 to
20 knots in the afternoon. a chance of rain showers through early
afternoon. waves subsiding to 2 to 4 feet. 
.tuesday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots backing southwest by
mid afternoon. waves building to 1 to 3 feet. 
.wednesday night...south winds 5 to 15 knots. waves subsiding to
calm to 2 feet. 
.thursday...south winds 5 to 15 knots increasing to 10 to
20 knots. waves building to 1 to 3 feet. 
.friday...east winds 5 to 15 knots. waves subsiding to calm to
2 feet, then building to 1 to 3 feet. 

$$

fzus63 kmqt 181402
glfls 
expires:202605182000;;768925

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon may 18 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... 

low pressure will weaken over the lake today with another low 
pressure following it, reaching lake superior by tuesday morning at 
29.6 inches. afterwards, a 30.2 inch high over the northern plains 
builds to 30.4 inches tuesday night into wednesday as it traverses 
eastwards into the upper great lakes. the high pressure shifts east 
on thursday while leaving lingering ridging of at least 30.1 inches 
over lake superior into friday. a 29.9 inch low lifts into the great 
lakes from the southern plains for saturday, but 30.1 inch ridging 
maintains over lake superior.



lsz264-182000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 am edt mon may 18 2026

...dense fog advisory in effect until 5 pm edt this afternoon...

.rest of today...northeast winds 5 to 15 knots backing north in
the afternoon, then increasing to 10 to 20 knots late. patchy
dense fog. a slight chance of rain showers by mid afternoon.
waves 3 to 5 feet occasionally to 7 feet subsiding to 2 to
4 feet. 
.tonight...northeast winds 15 to 25 knots. patchy fog. a chance
of rain showers through midnight. a slight chance of
thunderstorms. rain showers after midnight. waves building to
4 to 7 feet occasionally to 9 feet. 
.tuesday...north winds 15 to 25 knots backing northwest in the
afternoon. patchy fog through early afternoon. rain showers
likely through early afternoon. waves building to 5 to 8 feet
occasionally to 10 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tuesday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves subsiding to 1 to 3 feet. 
.wednesday...northwest winds 10 to 20 knots becoming southwest
5 to 15 knots by mid afternoon. waves subsiding to calm to
2 feet. 
.wednesday night...southwest winds 5 to 15 knots backing south
after midnight. waves calm to 2 feet. 
.thursday...south winds 5 to 15 knots increasing to 10 to
20 knots. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 
.friday...southeast winds 5 to 15 knots. waves 1 to 3 feet. 

$$

fzus63 kmqt 181402
glfls 
expires:202605182000;;768926

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon may 18 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... 

low pressure will weaken over the lake today with another low 
pressure following it, reaching lake superior by tuesday morning at 
29.6 inches. afterwards, a 30.2 inch high over the northern plains 
builds to 30.4 inches tuesday night into wednesday as it traverses 
eastwards into the upper great lakes. the high pressure shifts east 
on thursday while leaving lingering ridging of at least 30.1 inches 
over lake superior into friday. a 29.9 inch low lifts into the great 
lakes from the southern plains for saturday, but 30.1 inch ridging 
maintains over lake superior.



lsz265-182000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 am edt mon may 18 2026

...dense fog advisory in effect until 5 pm edt this afternoon...

.rest of today...south winds 10 to 20 knots veering west in the
afternoon, then veering north late. patchy dense fog. a chance of
showers. waves 2 to 4 feet subsiding to calm to 2 feet. 
.tonight...north winds 10 to 20 knots veering east late. areas of
dense fog through midnight. patchy fog after midnight. a chance
of rain showers through midnight. a slight chance of
thunderstorms. rain showers after midnight. waves building to
2 to 4 feet. 
.tuesday...northwest winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. patchy fog through early afternoon.
rain showers likely and a slight chance of thunderstorms through
early afternoon. waves building to 4 to 7 feet occasionally to
9 feet. 
.tuesday night...northwest winds 15 to 25 knots. waves subsiding
to 3 to 5 feet occasionally to 7 feet. 
.wednesday...northwest winds 10 to 20 knots becoming south 5 to
15 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.wednesday night...south winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves calm to 2 feet. 
.thursday...southeast winds 10 to 20 knots veering south. waves
building to 2 to 4 feet, then subsiding to 1 to 3 feet. 
.friday...southeast winds 10 to 20 knots. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 181402
glfls 
expires:202605182000;;768927

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon may 18 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... 

low pressure will weaken over the lake today with another low 
pressure following it, reaching lake superior by tuesday morning at 
29.6 inches. afterwards, a 30.2 inch high over the northern plains 
builds to 30.4 inches tuesday night into wednesday as it traverses 
eastwards into the upper great lakes. the high pressure shifts east 
on thursday while leaving lingering ridging of at least 30.1 inches 
over lake superior into friday. a 29.9 inch low lifts into the great 
lakes from the southern plains for saturday, but 30.1 inch ridging 
maintains over lake superior.



lsz266-182000-
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-
1001 am edt mon may 18 2026

...dense fog advisory in effect until 5 pm edt this afternoon...

.rest of today...south winds 10 to 20 knots veering southwest in
the afternoon, then veering north late. patchy dense fog. a
slight chance of showers. waves 3 to 5 feet occasionally to
7 feet subsiding to 2 to 4 feet. 
.tonight...northeast winds 15 to 25 knots veering east after
midnight. areas of dense fog. a chance of rain showers through
midnight. a chance of thunderstorms. rain showers likely after
midnight. waves building to 3 to 6 feet occasionally to 8 feet. 
.tuesday...south winds 15 to 25 knots becoming northwest 20 to
30 knots in the afternoon, then increasing to 30 knots with a few
gale force gusts to 35 knots possible late. areas of dense fog
through early afternoon. a slight chance of thunderstorms through
early afternoon. a chance of rain showers. waves building to 7 to
10 feet occasionally to 13 feet. 
.tuesday night...northwest winds 20 to 30 knots. waves subsiding
to 4 to 7 feet occasionally to 9 feet. 
.wednesday...northwest winds 15 to 25 knots becoming west 5 to
15 knots by mid afternoon. waves subsiding to 1 to 3 feet. 
.wednesday night...southwest winds 5 to 15 knots backing south
after midnight. waves subsiding to calm to 2 feet. 
.thursday...south winds 10 to 20 knots. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet. 
.friday...southeast winds 15 to 25 knots diminishing to 10 to
20 knots. waves 1 to 3 feet. 

$$

fzus63 kmqt 181402
glfls 
expires:202605182000;;768928

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon may 18 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... 

low pressure will weaken over the lake today with another low 
pressure following it, reaching lake superior by tuesday morning at 
29.6 inches. afterwards, a 30.2 inch high over the northern plains 
builds to 30.4 inches tuesday night into wednesday as it traverses 
eastwards into the upper great lakes. the high pressure shifts east 
on thursday while leaving lingering ridging of at least 30.1 inches 
over lake superior into friday. a 29.9 inch low lifts into the great 
lakes from the southern plains for saturday, but 30.1 inch ridging 
maintains over lake superior.



lsz267-182000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 am edt mon may 18 2026

...dense fog advisory in effect until 8 pm edt this evening...

.rest of today...south winds 10 to 20 knots veering southwest in
the afternoon, then becoming north 5 to 15 knots late. areas of
dense fog. a slight chance of showers. waves 2 to 4 feet
subsiding to calm to 2 feet. 
.tonight...east winds 5 to 15 knots becoming southeast 10 to
20 knots late. areas of dense fog. a chance of showers and
thunderstorms. waves building to 2 to 4 feet. 
.tuesday...south winds 15 to 25 knots becoming west 20 to
30 knots in the afternoon, then increasing to 30 knots with a few
gale force gusts to 35 knots possible late. areas of dense fog
through early afternoon. a slight chance of thunderstorms through
early afternoon. a chance of rain showers. waves building to 8 to
11 feet occasionally to 14 feet. 
.tuesday night...northwest gales to 35 knots diminishing to 20 to
30 knots after midnight. waves subsiding to 4 to 7 feet
occasionally to 9 feet. 
.wednesday...northwest winds 20 to 30 knots diminishing to 10 to
20 knots by mid afternoon. waves subsiding to 2 to 4 feet. 
.wednesday night...west winds 5 to 15 knots backing south after
midnight. waves subsiding to calm to 2 feet. 
.thursday...east winds 5 to 15 knots veering southeast. waves
calm to 2 feet. 
.friday...southeast winds 10 to 20 knots. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 

$$