fzus63 kdtx 180200
glflh 
expires:202509181000;;165394

open lake forecast for lake huron
national weather service detroit/pontiac mi
1000 pm edt wed sep 17 2025

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, 30.00 inches, over the central and
eastern great lakes will gradually weaken into thursday. a
stronger high developing over northern ontario forces a weak cold
front across the region thursday. the high pressure then
gradually shifts southeast across ontario before reaching
southern quebec on saturday and new england on sunday.


lhz361-181000-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
1000 pm edt wed sep 17 2025

.rest of tonight...southwest winds 5 to 10 knots veering to the
northwest after midnight. waves 2 feet or less. 
.thursday...northwest winds 5 to 10 knots. waves 2 feet or less. 
.thursday night...north winds 5 to 10 knots becoming northeast
10 to 15 knots after midnight. waves 2 feet or less. 
.friday...northeast winds 10 to 15 knots becoming east 5 to
10 knots in the late morning and afternoon. waves 1 to 3 feet. 
.friday night...light and variable winds becoming east 10 to
15 knots. waves 1 to 3 feet. 
.saturday...east winds 10 to 15 knots becoming southeast 15 to
20 knots late in the morning...then decreasing to 10 to 15 knots
late in the afternoon. a chance of showers late in the evening.
waves 3 to 5 feet. 
.sunday...southeast winds 10 to 15 knots decreasing to 5 to
10 knots. a chance of showers. waves 2 to 4 feet subsiding to
1 to 3 feet in the late evening and early morning. 
.monday...south winds 5 to 10 knots until afternoon becoming
light and variable...then becoming south 5 to 10 knots in the
late evening and early morning. a chance of showers. waves 1 to
3 feet. 


$$

fzus63 kdtx 180200
glflh 
expires:202509181000;;165395

open lake forecast for lake huron
national weather service detroit/pontiac mi
1000 pm edt wed sep 17 2025

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, 30.00 inches, over the central and
eastern great lakes will gradually weaken into thursday. a
stronger high developing over northern ontario forces a weak cold
front across the region thursday. the high pressure then
gradually shifts southeast across ontario before reaching
southern quebec on saturday and new england on sunday.


lhz362-363-181000-
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-
1000 pm edt wed sep 17 2025

.rest of tonight...south winds 5 to 10 knots veering to the west
early in the morning. waves 2 feet or less. 
.thursday...northwest winds 5 to 10 knots becoming north 10 to
15 knots in the late morning and afternoon. waves 1 to 3 feet. 
.thursday night...northwest winds 5 to 10 knots veering to the
north in the late evening and early morning...then becoming
northeast 10 to 15 knots after midnight. waves 1 to 3 feet. 
.friday...northeast winds 10 to 15 knots. waves 2 to 4 feet. 
.friday night...northeast winds 5 to 10 knots becoming east 10 to
15 knots in the late evening and overnight. waves 2 to 4 feet. 
.saturday...east winds 10 to 15 knots. waves 3 to 5 feet. 
.sunday...southeast winds 10 to 15 knots. a chance of showers.
waves 2 to 4 feet. 
.monday...south winds 10 to 15 knots decreasing to 5 to 10 knots
until early morning. a chance of showers. waves 2 to 4 feet
subsiding to 1 to 3 feet until early morning. 


$$

fzus63 kdtx 180200
glflh 
expires:202509181000;;165396

open lake forecast for lake huron
national weather service detroit/pontiac mi
1000 pm edt wed sep 17 2025

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, 30.00 inches, over the central and
eastern great lakes will gradually weaken into thursday. a
stronger high developing over northern ontario forces a weak cold
front across the region thursday. the high pressure then
gradually shifts southeast across ontario before reaching
southern quebec on saturday and new england on sunday.


lhz462>464-181000-
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-
1000 pm edt wed sep 17 2025

.rest of tonight...light and variable winds. waves 2 feet or
less. 
.thursday...southwest winds 5 to 10 knots veering to the west
late in the morning...then becoming north 10 to 15 knots in the
afternoon. waves 2 feet or less. 
.thursday night...north winds 10 to 15 knots decreasing to 5 to
10 knots in the late evening and early morning...then becoming
northeast 10 to 15 knots after midnight. waves 2 to 4 feet
subsiding to 1 to 3 feet in the late evening and overnight. 
.friday...northeast winds 10 to 15 knots. waves 2 to 4 feet. 
.friday night...north winds 15 to 20 knots becoming northeast
10 to 15 knots in the late evening and overnight. waves 2 to
4 feet. 
.saturday...east winds 10 to 15 knots becoming southeast 5 to
10 knots late in the morning...then becoming east 10 to 15 knots
late in the afternoon. waves 2 to 4 feet subsiding to 1 to 3 feet
late in the afternoon...then building to 2 to 4 feet late in the
evening. 
.sunday...southeast winds 10 to 15 knots. a chance of showers
until early morning. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.monday...south winds 10 to 15 knots decreasing to 5 to 10 knots
in the late evening and early morning. a chance of showers. waves
1 to 3 feet. 


$$

fzus63 kmkx 180152
glflm 
expires:202509180915;;165198

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
852 pm cdt wed sep 17 2025

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...

winds remain nearly calm through tonight, with a light northeast
wind developing over the northern half of the lake in response to
a weak backdoor cold front. this front sags southward across the
rest of the lake thursday, bringing steady north winds. light 
northeast winds are then expected into friday, becoming breezy 
and veering southeast friday night through saturday morning as the
high pressure strengthens to around 30.4 inches and approaches 
southern ontario and quebec and as low pressure around 29.9 inches
moves into the dakotas and minnesota. on and off thunderstorms 
are expected friday night through sunday.


lmz261-362-364-366-563-565-567-868-180915-
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-
852 pm cdt wed sep 17 2025

sheboygan wi to pentwater mi north...

.rest of tonight...southwest winds 10 to 15 kt veering to
northeast. patchy fog overnight. waves 1 to 2 ft. 
.thursday...northeast winds 10 to 15 kt becoming north. patchy
dense fog in the morning. waves 1 to 3 ft. 
.thursday night...northeast winds 10 to 20 kt diminishing to
10 to 15 kt. waves 1 to 3 ft. 
.friday...east winds 10 to 15 kt becoming northeast 10 to 20 kt.
waves 1 to 3 ft. 
.friday night...east winds 10 to 20 kt becoming southeast. waves
1 to 3 ft building to 3 to 5 ft. 
.saturday...southeast winds 10 to 20 kt. waves 3 to 5 ft. 
.saturday night...southeast winds 10 to 20 kt becoming south.
chance of showers. waves 2 to 4 ft. 
.sunday...south winds 10 to 20 kt. chance of showers. waves 2 to
4 ft. 
.monday...south winds 10 to 20 kt. chance of showers. waves 2 to
4 ft.  

$$

fzus63 kmkx 180152
glflm 
expires:202509180915;;165199

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
852 pm cdt wed sep 17 2025

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...

winds remain nearly calm through tonight, with a light northeast
wind developing over the northern half of the lake in response to
a weak backdoor cold front. this front sags southward across the
rest of the lake thursday, bringing steady north winds. light 
northeast winds are then expected into friday, becoming breezy 
and veering southeast friday night through saturday morning as the
high pressure strengthens to around 30.4 inches and approaches 
southern ontario and quebec and as low pressure around 29.9 inches
moves into the dakotas and minnesota. on and off thunderstorms 
are expected friday night through sunday.


lmz080-669-671-673-675-777-779-870-872-874-876-878-180915-
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-
852 pm cdt wed sep 17 2025

sheboygan wi to pentwater mi south...

.rest of tonight...south winds 5 to 10 kt becoming southeast.
waves 1 ft or less. 
.thursday...south winds 5 to 10 kt backing to north. waves 1 to
2 ft. 
.thursday night...northeast winds 10 to 15 kt becoming east.
waves 1 to 3 ft. 
.friday...east winds 10 to 15 kt becoming northeast. waves 1 to
3 ft. 
.friday night...northeast winds 10 to 20 kt becoming east 15 to
25 kt. waves 3 to 5 ft building to 4 to 6 ft occasionally to
8 ft. 
.saturday...southeast winds 10 to 20 kt. waves 4 to 6 ft
occasionally to 8 ft subsiding to 3 to 5 ft. 
.saturday night...southeast winds 10 to 20 kt. chance of showers.
waves 2 to 4 ft. 
.sunday...south winds 10 to 20 kt. chance of showers. waves 2 to
4 ft. 
.monday...south winds 10 to 20 kt. chance of showers. waves 2 to
4 ft.  

$$

fzus63 kmqt 180201
glfls 
expires:202509180800;;165537

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt wed sep 17 2025

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 30.3 inch high over manitoba gradually shifts over northern 
ontario tonight through friday and strengthens to 30.4 inches on 
saturday over eastern ontario and quebec. the 30.4 inch high will 
move to new england by sunday morning. this brings 30.2 inch ridging 
back over lake superior thursday and friday, weakening to 30.0 
inches by the end of the day saturday. troughing then begins to 
spread over lake superior sunday into the beginning of next week as 
low pressure deepens over the canadian prairie to around 29.5 inches.



lsz162-180800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt wed sep 17 2025 /901 pm cdt wed sep 17 2025/

.rest of tonight...northeast winds 5 to 15 knots becoming east
10 to 20 knots after midnight, then backing northeast late. a
slight chance of showers after midnight. waves calm to 2 feet
building to 1 to 3 feet. 
.thursday...northeast winds 15 to 25 knots veering east in the
afternoon. a slight chance of showers. waves building to 3 to
6 feet occasionally to 8 feet. 
.thursday night...east winds 15 to 25 knots. a slight chance of
showers. a slight chance of thunderstorms after midnight. waves
subsiding to 3 to 5 feet occasionally to 7 feet. 
.friday...east winds 15 to 25 knots increasing to 20 to 30 knots
by mid afternoon. a slight chance of thunderstorms through early
afternoon. a slight chance of showers. waves building to 4 to
7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.friday night...east winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. a chance of showers and a slight chance
of thunderstorms. waves subsiding to calm to 2 feet. 
.saturday...southeast winds 10 to 20 knots backing east by mid
afternoon. showers likely and a chance of thunderstorms. waves
calm to 2 feet. 
.saturday night...east winds 5 to 15 knots veering south after
midnight. a chance of showers and thunderstorms. waves calm to
2 feet. 
.sunday...south winds 5 to 15 knots veering southwest. a chance
of showers. waves calm to 2 feet. 
.monday...south winds 5 to 15 knots becoming west 10 to 20 knots.
a chance of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 180201
glfls 
expires:202509180800;;165538

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt wed sep 17 2025

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 30.3 inch high over manitoba gradually shifts over northern 
ontario tonight through friday and strengthens to 30.4 inches on 
saturday over eastern ontario and quebec. the 30.4 inch high will 
move to new england by sunday morning. this brings 30.2 inch ridging 
back over lake superior thursday and friday, weakening to 30.0 
inches by the end of the day saturday. troughing then begins to 
spread over lake superior sunday into the beginning of next week as 
low pressure deepens over the canadian prairie to around 29.5 inches.



lsz263-180800-
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 pm edt wed sep 17 2025

.rest of tonight...northeast winds 5 to 15 knots increasing to
10 to 20 knots late. waves calm to 2 feet building to 1 to
3 feet. 
.thursday...northeast winds 10 to 20 knots veering east in the
afternoon. a slight chance of showers. waves building to 3 to
6 feet occasionally to 8 feet. 
.thursday night...east winds 10 to 20 knots. a slight chance of
showers. waves subsiding to 2 to 4 feet. 
.friday...east winds 15 to 25 knots. a slight chance of showers.
waves building to 3 to 6 feet occasionally to 8 feet. 
.friday night...east winds 10 to 20 knots becoming southeast 5 to
15 knots after midnight. a slight chance of showers. waves
subsiding to calm to 2 feet. 
.saturday...southeast winds 5 to 15 knots. a chance of showers.
waves building to 1 to 3 feet. 
.saturday night...south winds 5 to 15 knots. a chance of showers
and thunderstorms. waves subsiding to calm to 2 feet. 
.sunday...south winds 5 to 15 knots. a chance of showers and
thunderstorms. waves calm to 2 feet. 
.monday...southwest winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 180201
glfls 
expires:202509180800;;165539

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt wed sep 17 2025

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 30.3 inch high over manitoba gradually shifts over northern 
ontario tonight through friday and strengthens to 30.4 inches on 
saturday over eastern ontario and quebec. the 30.4 inch high will 
move to new england by sunday morning. this brings 30.2 inch ridging 
back over lake superior thursday and friday, weakening to 30.0 
inches by the end of the day saturday. troughing then begins to 
spread over lake superior sunday into the beginning of next week as 
low pressure deepens over the canadian prairie to around 29.5 inches.



lsz264-180800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 pm edt wed sep 17 2025

.rest of tonight...north winds 5 to 15 knots becoming northeast
10 to 20 knots late. waves calm to 2 feet building to 1 to
3 feet. 
.thursday...northeast winds 10 to 20 knots. waves 1 to 3 feet. 
.thursday night...northeast winds 5 to 15 knots veering east
after midnight. waves subsiding to calm to 2 feet, then building
to 2 to 4 feet. 
.friday...east winds 10 to 20 knots. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet. 
.friday night...east winds 10 to 20 knots veering southeast after
midnight. waves subsiding to calm to 2 feet. 
.saturday...southeast winds 10 to 20 knots. a chance of showers.
waves building to 2 to 4 feet. 
.saturday night...south winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. a chance of showers and thunderstorms.
waves subsiding to 1 to 3 feet. 
.sunday...south winds 5 to 15 knots. a chance of showers and
thunderstorms. waves subsiding to calm to 2 feet. 
.monday...south winds 5 to 15 knots veering southwest. waves calm
to 2 feet. 

$$

fzus63 kmqt 180201
glfls 
expires:202509180800;;165540

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt wed sep 17 2025

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 30.3 inch high over manitoba gradually shifts over northern 
ontario tonight through friday and strengthens to 30.4 inches on 
saturday over eastern ontario and quebec. the 30.4 inch high will 
move to new england by sunday morning. this brings 30.2 inch ridging 
back over lake superior thursday and friday, weakening to 30.0 
inches by the end of the day saturday. troughing then begins to 
spread over lake superior sunday into the beginning of next week as 
low pressure deepens over the canadian prairie to around 29.5 inches.



lsz265-180800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 pm edt wed sep 17 2025

.rest of tonight...northwest winds 5 to 15 knots veering north
after midnight, then increasing to 10 to 20 knots late. waves
calm to 2 feet. 
.thursday...northeast winds 10 to 20 knots. waves building to
1 to 3 feet, then subsiding to calm to 2 feet. 
.thursday night...northeast winds 10 to 20 knots veering east
after midnight. a slight chance of showers through midnight.
waves building to 1 to 3 feet. 
.friday...east winds 10 to 20 knots. waves 1 to 3 feet. 
.friday night...east winds 10 to 20 knots veering southeast after
midnight. waves subsiding to calm to 2 feet. 
.saturday...southeast winds 15 to 25 knots. a chance of showers.
waves calm to 2 feet. 
.saturday night...southeast winds 15 to 25 knots becoming south
10 to 20 knots after midnight. a chance of showers through
midnight. a chance of thunderstorms. showers likely after
midnight. waves calm to 2 feet. 
.sunday...south winds 10 to 20 knots. a chance of showers and
thunderstorms. waves calm to 2 feet. 
.monday...south winds 10 to 20 knots veering southwest. a chance
of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 180201
glfls 
expires:202509180800;;165541

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt wed sep 17 2025

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 30.3 inch high over manitoba gradually shifts over northern 
ontario tonight through friday and strengthens to 30.4 inches on 
saturday over eastern ontario and quebec. the 30.4 inch high will 
move to new england by sunday morning. this brings 30.2 inch ridging 
back over lake superior thursday and friday, weakening to 30.0 
inches by the end of the day saturday. troughing then begins to 
spread over lake superior sunday into the beginning of next week as 
low pressure deepens over the canadian prairie to around 29.5 inches.



lsz266-180800-
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 pm edt wed sep 17 2025

.rest of tonight...northwest winds 5 to 15 knots veering north
after midnight, then increasing to 10 to 20 knots late. patchy
fog. waves calm to 2 feet building to 1 to 3 feet. 
.thursday...northeast winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.thursday night...northeast winds 10 to 20 knots veering east
after midnight. waves building to 1 to 3 feet. 
.friday...east winds 10 to 20 knots. waves 1 to 3 feet. 
.friday night...east winds 10 to 20 knots veering southeast after
midnight. waves subsiding to calm to 2 feet. 
.saturday...southeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. waves building to 2 to 4 feet. 
.saturday night...southeast winds 15 to 25 knots veering south
after midnight. a chance of showers through midnight. a chance of
thunderstorms. showers likely after midnight. waves subsiding to
1 to 3 feet. 
.sunday...south winds 10 to 20 knots. a chance of showers and
thunderstorms. waves subsiding to calm to 2 feet. 
.monday...south winds 10 to 20 knots. a chance of showers. waves
calm to 2 feet. 

$$

fzus63 kmqt 180201
glfls 
expires:202509180800;;165542

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt wed sep 17 2025

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 30.3 inch high over manitoba gradually shifts over northern 
ontario tonight through friday and strengthens to 30.4 inches on 
saturday over eastern ontario and quebec. the 30.4 inch high will 
move to new england by sunday morning. this brings 30.2 inch ridging 
back over lake superior thursday and friday, weakening to 30.0 
inches by the end of the day saturday. troughing then begins to 
spread over lake superior sunday into the beginning of next week as 
low pressure deepens over the canadian prairie to around 29.5 inches.



lsz267-180800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 pm edt wed sep 17 2025

.rest of tonight...west winds 10 to 20 knots veering north late.
areas of dense fog by midnight, then patchy fog after midnight.
waves calm to 2 feet. 
.thursday...north winds 10 to 20 knots veering northeast in the
afternoon. patchy fog through early afternoon. waves calm to
2 feet. 
.thursday night...northeast winds 10 to 20 knots veering east
after midnight. waves building to 1 to 3 feet. 
.friday...east winds 10 to 20 knots diminishing to 5 to 15 knots
by mid afternoon. waves subsiding to calm to 2 feet. 
.friday night...east winds 10 to 20 knots veering southeast after
midnight. waves calm to 2 feet. 
.saturday...southeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. waves building to 1 to 3 feet. 
.saturday night...southeast winds 15 to 25 knots. a chance of
showers. a chance of thunderstorms after midnight. waves building
to 2 to 4 feet, then subsiding to 1 to 3 feet. 
.sunday...south winds 10 to 20 knots. showers likely. waves
subsiding to calm to 2 feet. 
.monday...south winds 10 to 20 knots. a chance of showers. waves
calm to 2 feet. 

$$