fzus61 kbuf 170202
glflo 
expires:202605170900;;684734

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt sat may 16 2026

for waters beyond five nautical miles of shore on lake ontario

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

.synopsis...a 29.4 inch low over the central plains on sunday will 
weaken to 29.7 inches as it moves northeast into the upper great 
lakes sunday night while swinging an attendant warm front across the 
lake. another area of low pressure will develop over the central 
plains monday. the low will weaken from 29.4 inches to 29.6 inches 
as it tracks northeast to the upper great lakes monday night into 
tuesday morning, then to near the southern tip of james bay on 
tuesday. a cold front from this low will cross the lake wednesday. a 
30.4 inch high will build across the great lakes wednesday night 
through thursday.


loz063>065-170900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt sat may 16 2026

.overnight...southwest winds 5 to 15 knots becoming west.
patchy fog. waves 1 to 3 feet. 
.sunday...west winds 5 to 10 knots becoming southwest. patchy fog
in the morning. waves 2 feet or less. 
.sunday night...southeast winds 10 knots or less becoming east. a
chance of showers overnight. waves 1 foot or less. 
.monday...southeast winds 5 to 15 knots becoming south. a chance
of showers in the morning. waves 2 feet or less. 
.monday night...south winds 5 to 15 knots becoming southwest. a
chance of showers. waves 2 feet or less. 
.tuesday...southwest winds 10 to 15 knots increasing to 15 to
20 knots. a chance of showers and thunderstorms. waves 1 to
3 feet building to 3 to 5 feet. 
.wednesday...west winds 15 to 20 knots becoming northwest. a
chance of showers during the day. waves 3 to 5 feet. 
.thursday...northwest winds 5 to 15 knots becoming north less
than 10 knots. waves 2 to 4 feet subsiding to 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 170202
glflo 
expires:202605170900;;684733

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt sat may 16 2026

for waters beyond five nautical miles of shore on lake ontario

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

.synopsis...a 29.4 inch low over the central plains on sunday will 
weaken to 29.7 inches as it moves northeast into the upper great 
lakes sunday night while swinging an attendant warm front across the 
lake. another area of low pressure will develop over the central 
plains monday. the low will weaken from 29.4 inches to 29.6 inches 
as it tracks northeast to the upper great lakes monday night into 
tuesday morning, then to near the southern tip of james bay on 
tuesday. a cold front from this low will cross the lake wednesday. a 
30.4 inch high will build across the great lakes wednesday night 
through thursday.


loz062-170900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt sat may 16 2026

.overnight...southwest winds 5 to 15 knots becoming west.
patchy fog. waves 1 to 3 feet. 
.sunday...west winds 10 knots or less becoming southeast. patchy
fog in the morning. waves 2 feet or less. 
.sunday night...southeast winds 5 to 10 knots becoming east. a
chance of showers. waves 1 foot or less. 
.monday...east winds 10 knots or less becoming southwest and
increasing to 15 to 20 knots in the afternoon. a chance of
showers in the morning. waves 1 to 3 feet. 
.monday night...southwest winds 15 to 20 knots diminishing to
10 to 15 knots. a chance of showers overnight. waves 1 to 3 feet.
.tuesday...southwest winds 15 to 25 knots. a chance of showers
during the day, then a chance of showers and thunderstorms
tuesday night. waves 2 to 4 feet building to 3 to 5 feet. 
.wednesday...west winds 15 to 20 knots becoming northwest 10 to
15 knots. a chance of showers and thunderstorms during the day.
waves 3 to 5 feet subsiding to 2 to 4 feet. 
.thursday...north winds 5 to 15 knots diminishing to less than
10 knots. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 170103
glfle 
expires:202605170815;;683159

open lake forecast for lake erie
national weather service cleveland oh
903 pm edt sat may 16 2026

for waters beyond five nautical miles of shore on lake erie

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

.synopsis...
a frontal boundary will waver to the north of lake erie through
sunday. the boundary will lift to the north of the region late
sunday into early monday as a cold front slowly approaches from
the west. the front will move east across the lake on wednesday. 
high pressure 30.20 inches will build over the lake on thursday.


lez162>165-170815-
detroit river lt. to maumee bay oh to reno beach oh beyond 5nm
offshoreline to us-canadian border-
reno beach to the islands oh beyond 5nm off shoreline to us-
canadian border-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
vermilion to avon point oh beyond 5 nm off shoreline to us-
canadian border-
903 pm edt sat may 16 2026

.overnight...southwest winds 5 to 15 knots. waves 2 feet or
less. 
.sunday...southwest winds 10 knots or less becoming east. a
slight chance of showers and thunderstorms in the afternoon.
waves 1 foot or less. 
.sunday night...east winds 5 to 15 knots becoming south. waves
2 feet or less. 
.monday...south winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet. 
.monday night...southwest winds 15 to 20 knots diminishing to
10 to 15 knots. a chance of showers overnight. waves 1 to 3 feet.
.tuesday...southwest winds 15 to 20 knots. showers likely with a
chance of thunderstorms. waves 1 to 3 feet. 
.wednesday...west winds 10 to 15 knots becoming northeast 15 to
20 knots. waves 1 to 3 feet. 
.thursday...northeast winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 170103
glfle 
expires:202605170815;;683160

open lake forecast for lake erie
national weather service cleveland oh
903 pm edt sat may 16 2026

for waters beyond five nautical miles of shore on lake erie

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

.synopsis...
a frontal boundary will waver to the north of lake erie through
sunday. the boundary will lift to the north of the region late
sunday into early monday as a cold front slowly approaches from
the west. the front will move east across the lake on wednesday. 
high pressure 30.20 inches will build over the lake on thursday.


lez061-166>169-170815-
ripley to buffalo ny extending from 5nm 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-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
903 pm edt sat may 16 2026

.overnight...southwest winds 10 to 15 knots. waves 1 to
3 feet. 
.sunday...southwest winds 10 knots or less becoming northeast. a
slight chance of showers and thunderstorms late. waves 2 feet or
less. 
.sunday night...east winds 5 to 15 knots becoming south. waves
2 feet or less. 
.monday...south winds 10 to 15 knots becoming southwest. waves
2 feet or less. 
.monday night...southwest winds 10 to 15 knots. a chance of
showers overnight. waves 1 to 3 feet. 
.tuesday...southwest winds 10 to 15 knots increasing to 15 to
20 knots. a chance of showers and thunderstorms during the day,
then showers likely with a chance of thunderstorms tuesday night.
waves 1 to 3 feet building to 2 to 4 feet. 
.wednesday...west winds 10 to 15 knots becoming north 15 to
20 knots. a chance of showers during the day. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.thursday...northeast winds 5 to 15 knots. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 170202
glfsc 
expires:202605171015;;684724

lake st clair forecast
national weather service detroit/pontiac mi
1002 pm edt sat may 16 2026

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

.synopsis...a cold front stalls over southern lake huron this
morning. isolated strong to severe thunderstorms are possible
near the frontal zones this afternoon and may linger through late
tonight. the front lifts north as a warm front overnight,
resulting in a period of breezy southerly flow and thunderstorm
chances through the first half of the work week.


lcz460-171015-
lake st clair-
1002 pm edt sat may 16 2026

.rest of tonight...west winds 5 to 10 knots. partly cloudy. waves 2
feet or less.
.sunday...light and variable winds becoming southeast 5 to 10 knots
in the afternoon. partly sunny. waves 2 feet or less.
.sunday night...south winds 10 to 15 knots. partly cloudy. waves 2
feet or less.
.monday...south winds 10 to 15 knots increasing to 20 to 25 knots.
mostly sunny. waves 1 to 3 feet building to 2 to 4 feet early in the
afternoon.
.monday night...southwest winds 15 to 20 knots diminishing to 10 to
15 knots after midnight. partly cloudy. a chance of light showers
...then light showers likely after midnight. waves 2 to 4 feet
subsiding to 1 to 3 feet in the late evening and overnight.
.tuesday...southwest winds 15 to 20 knots increasing to 20 to 25
knots with gusts to 30 knots in the afternoon and evening. partly
sunny with light showers likely in the morning...then partly cloudy
with light showers likely and a chance of thunderstorms in the
afternoon and evening. waves 1 to 3 feet building to 2 to 4 feet in
the afternoon and evening. a small craft advisory may be needed.
.wednesday...north winds 15 to 20 knots. partly cloudy. showers
likely and a chance of thunderstorms. waves 1 to 3 feet.
.thursday...northeast winds 15 to 20 knots. partly cloudy. waves 2
feet or less.

$$

fzus63 kdtx 170201
glflh 
expires:202605171015;;684692

open lake forecast for lake huron
national weather service detroit/pontiac mi
1001 pm edt sat may 16 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 cold front stalls over southern lake huron this
morning. isolated strong to severe thunderstorms are possible
near the frontal zones this afternoon and may linger through late
tonight. the front lifts north as a warm front overnight,
resulting in a period of breezy southerly flow and thunderstorm
chances through the first half of the work week.


lhz462>464-171015-
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-
1001 pm edt sat may 16 2026

.rest of tonight...west winds 5 to 10 knots. waves 2 feet or
less. 
.sunday...north winds 5 to 10 knots. waves 2 feet or less. 
.sunday night...northeast winds 5 to 10 knots becoming east 10 to
15 knots by midnight...then veering to the south after midnight.
waves 1 to 3 feet building to 2 to 4 feet after midnight. 
.monday...south winds 15 to 20 knots. a chance of showers and
thunderstorms in the afternoon. waves 3 to 5 feet. 
.monday night...south winds 15 to 20 knots decreasing to 10 to
15 knots in the late evening and overnight. showers likely and a
chance of thunderstorms in the evening...then showers likely
after midnight. waves 3 to 5 feet. 
.tuesday...south winds 15 to 20 knots veering to the west late in
the evening. showers. a chance of thunderstorms. a chance of
showers late in the afternoon. waves 4 to 6 feet. waves
occasionally around 8 feet. 
.wednesday...north winds 10 to 15 knots. waves 4 to 6 feet. waves
occasionally around 8 feet. 
.thursday...north winds 10 to 15 knots decreasing to 5 to
10 knots . waves 3 to 5 feet subsiding to 1 to 3 feet by
midnight. 


$$

fzus63 kdtx 170201
glflh 
expires:202605171015;;684690

open lake forecast for lake huron
national weather service detroit/pontiac mi
1001 pm edt sat may 16 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 cold front stalls over southern lake huron this
morning. isolated strong to severe thunderstorms are possible
near the frontal zones this afternoon and may linger through late
tonight. the front lifts north as a warm front overnight,
resulting in a period of breezy southerly flow and thunderstorm
chances through the first half of the work week.


lhz361-171015-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
1001 pm edt sat may 16 2026

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


$$

fzus63 kdtx 170201
glflh 
expires:202605171015;;684691

open lake forecast for lake huron
national weather service detroit/pontiac mi
1001 pm edt sat may 16 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 cold front stalls over southern lake huron this
morning. isolated strong to severe thunderstorms are possible
near the frontal zones this afternoon and may linger through late
tonight. the front lifts north as a warm front overnight,
resulting in a period of breezy southerly flow and thunderstorm
chances through the first half of the work week.


lhz362-363-171015-
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-
1001 pm edt sat may 16 2026

.rest of tonight...north winds 5 to 10 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet after midnight. 
.sunday...northwest winds 5 to 10 knots veering to the north in
the late morning and early afternoon...then becoming northeast
10 to 15 knots late in the afternoon. waves 1 to 3 feet. 
.sunday night...east winds 10 to 15 knots. a chance of showers.
waves 1 to 3 feet building to 3 to 5 feet in the late evening and
overnight. 
.monday...south winds 15 to 20 knots. a chance of showers and
thunderstorms in the afternoon. waves 5 to 7 feet. waves
occasionally around 10 feet. 
.monday night...south winds 15 to 20 knots. showers likely and a
chance of thunderstorms. waves 5 to 7 feet. waves occasionally
around 10 feet. 
.tuesday...south winds 15 to 20 knots increasing to 20 to
25 knots late in the morning...then becoming southwest 15 to
20 knots late in the afternoon. showers likely...then a chance of
showers late in the afternoon. waves 5 to 7 feet building to 8 to
12 feet late in the evening. waves occasionally around 15 feet. 
.wednesday...northwest winds 15 to 20 knots. waves 6 to 9 feet.
waves occasionally around 12 feet. 
.thursday...northwest winds 10 to 15 knots becoming north 5 to
10 knots. waves 3 to 5 feet subsiding to 2 feet or less . 


$$

fzus63 kmkx 170203
glflm 
expires:202605170930;;684811

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
903 pm cdt sat may 16 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...

a cold front over far northern lake michigan this evening will
track to far southern lake michigan by sunday morning. a wind
shift to the northeast is expected along with brief gusty winds.
the front will then gradually return north as a warm front mainly
sunday night, with winds veering southerly and becoming gusty.
breezy south winds will then continue into tuesday followed by a
wind shift to the northwest late tuesday afternoon and evening
with the passage of a cold front. high pressure and light and
variable winds will then take hold from late wednesday into
thursday. 


lmz261-362-364-366-563-565-567-868-170930-
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-
903 pm cdt sat may 16 2026

sheboygan wi to pentwater mi north...

.rest of tonight...southwest winds 10 to 20 kt veering to north.
waves 2 to 4 ft. 
.sunday...northeast winds 15 to 25 kt. chance of rain showers and
thunderstorms. waves 2 to 4 ft. 
.sunday night...east winds to 30 kt veering to south. patchy fog
in the evening. chance of showers and thunderstorms in the
evening, then chance of showers overnight. waves 4 to 6 ft
occasionally to 8 ft building to 6 to 9 ft occasionally to 12 ft.
.monday...south winds to 30 kt. chance of showers. waves 6 to
9 ft occasionally to 12 ft. 
.monday night...south winds to 30 kt. showers likely with a
chance of thunderstorms in the evening, then showers with a
chance of thunderstorms overnight. waves 6 to 9 ft occasionally
to 12 ft. 
.tuesday...south winds to 30 kt becoming southwest. showers 
likely in the morning, then chance of showers in the afternoon. 
waves 7 to 10 ft occasionally to 13 ft. 
.tuesday night...northwest winds to 30 kt becoming north 15 to
25 kt. waves 6 to 9 ft occasionally to 12 ft subsiding to 4 to
6 ft occasionally to 8 ft. 
.wednesday...north winds 15 to 25 kt. waves 3 to 5 ft. 
.thursday...northeast winds 10 to 15 kt becoming north 10 to
20 kt. waves 1 to 2 ft.  

$$

fzus63 kmkx 170203
glflm 
expires:202605170930;;684812

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
903 pm cdt sat may 16 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...

a cold front over far northern lake michigan this evening will
track to far southern lake michigan by sunday morning. a wind
shift to the northeast is expected along with brief gusty winds.
the front will then gradually return north as a warm front mainly
sunday night, with winds veering southerly and becoming gusty.
breezy south winds will then continue into tuesday followed by a
wind shift to the northwest late tuesday afternoon and evening
with the passage of a cold front. high pressure and light and
variable winds will then take hold from late wednesday into
thursday. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-170930-
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-
903 pm cdt sat may 16 2026

sheboygan wi to pentwater mi south...

.rest of tonight...south winds 10 to 20 kt backing to east.
slight chance of rain showers and thunderstorms overnight. waves
1 to 3 ft. 
.sunday...east winds 15 to 25 kt diminishing to 10 to 20 kt.
patchy fog in the morning. chance of rain showers and
thunderstorms. waves 2 to 4 ft. 
.sunday night...southeast winds 10 to 20 kt becoming south 15 to
25 kt. waves 3 to 5 ft building to 5 to 8 ft occasionally to
10 ft. 
.monday...south winds to 30 kt. chance of showers in the morning,
then showers likely in the afternoon. waves 6 to 9 ft
occasionally to 12 ft. 
.monday night...south winds 15 to 25 kt increasing to 30 kt.
showers likely. waves 5 to 8 ft occasionally to 10 ft. 
.tuesday...south winds to 30 kt becoming southwest. showers
likely in the morning, then showers likely with a chance of
thunderstorms in the afternoon. waves 7 to 10 ft occasionally to
13 ft. 
.tuesday night...west winds 15 to 25 kt becoming north 10 to
20 kt. waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to
6 ft occasionally to 8 ft. 
.wednesday...north winds 10 to 20 kt increasing to 15 to 25 kt.
waves 4 to 6 ft occasionally to 8 ft. 
.thursday...northeast winds 10 to 20 kt becoming north. waves
2 to 4 ft.  

$$

fzus63 kmqt 170202
glfls 
expires:202605170800;;684699

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sat may 16 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... 

ridging builds to 30.1 inches by sunday morning over lake superior 
as the 30.2 inch parent high moves into northern ontario. this ridge 
is followed by a 29.7 inch trough extending northeast over the upper 
great lakes from the central plains by early monday. a low of around 
29.6 inches then moves over lake superior on tuesday before ridging 
of 30.2 to 30.3 inches builds back over the lake wednesday; the 
ridging may increase to 30.4 inches over the upper great lakes by 
thursday as it continues east towards the st. lawrence seaway.



lsz267-170800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 pm edt sat may 16 2026

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

$$

fzus63 kmqt 170202
glfls 
expires:202605170800;;684694

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sat may 16 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... 

ridging builds to 30.1 inches by sunday morning over lake superior 
as the 30.2 inch parent high moves into northern ontario. this ridge 
is followed by a 29.7 inch trough extending northeast over the upper 
great lakes from the central plains by early monday. a low of around 
29.6 inches then moves over lake superior on tuesday before ridging 
of 30.2 to 30.3 inches builds back over the lake wednesday; the 
ridging may increase to 30.4 inches over the upper great lakes by 
thursday as it continues east towards the st. lawrence seaway.



lsz162-170800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt sat may 16 2026 /901 pm cdt sat may 16 2026/

.rest of tonight...north winds 5 to 15 knots becoming northeast
10 to 20 knots after midnight, then becoming east 15 to 25 knots
late. waves calm to 2 feet building to 2 to 4 feet. 
.sunday...east winds 20 to 30 knots becoming northeast to
30 knots with a few gale force gusts to 35 knots possible in the
afternoon. a chance of rain showers by mid afternoon. waves
building to 7 to 10 feet occasionally to 13 feet. 
.sunday night...northeast winds to 30 knots with a few gale force
gusts to 35 knots possible diminishing to 15 to 25 knots. rain
showers and a chance of thunderstorms. waves building to 8 to
11 feet occasionally to 14 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.monday...northeast winds 10 to 20 knots. rain showers likely
through early afternoon. a slight chance of thunderstorms. a
chance of rain showers by mid afternoon. waves subsiding to 2 to
4 feet, then building to 3 to 5 feet occasionally to 7 feet. 
.monday night...northeast winds 20 to 30 knots. a chance of rain
showers through midnight. a slight chance of thunderstorms. rain
showers after midnight. waves building to 8 to 11 feet
occasionally to 14 feet. 
.tuesday...northeast winds 20 to 30 knots becoming north 15 to
25 knots by mid afternoon. rain showers through early afternoon.
waves building to 9 to 12 feet occasionally to 15 feet, then
subsiding to 3 to 6 feet occasionally to 8 feet. 
.tuesday night...north 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 west. waves
calm to 2 feet. 
.thursday...south winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 170202
glfls 
expires:202605170800;;684695

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sat may 16 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... 

ridging builds to 30.1 inches by sunday morning over lake superior 
as the 30.2 inch parent high moves into northern ontario. this ridge 
is followed by a 29.7 inch trough extending northeast over the upper 
great lakes from the central plains by early monday. a low of around 
29.6 inches then moves over lake superior on tuesday before ridging 
of 30.2 to 30.3 inches builds back over the lake wednesday; the 
ridging may increase to 30.4 inches over the upper great lakes by 
thursday as it continues east towards the st. lawrence seaway.



lsz263-170800-
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 sat may 16 2026

.rest of tonight...north winds 5 to 15 knots veering northeast
after midnight. waves 1 to 3 feet subsiding to calm to 2 feet. 
.sunday...east winds 10 to 20 knots increasing to 20 to 30 knots
in the afternoon. a chance of rain showers by mid afternoon.
waves building to 5 to 8 feet occasionally to 10 feet. 
.sunday night...east winds 20 to 30 knots diminishing to 15 to
25 knots after midnight, then backing northeast late. rain
showers and a chance of thunderstorms. waves subsiding to 3 to
6 feet occasionally to 8 feet, then building to 4 to 7 feet
occasionally to 9 feet. 
.monday...north winds 10 to 20 knots veering northeast by mid
afternoon. rain showers through early afternoon. a slight chance
of thunderstorms. a chance of rain showers by mid afternoon.
waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.monday night...northeast winds 20 to 30 knots. a chance of rain
showers and a slight chance of thunderstorms through midnight,
then rain showers after midnight. waves building to 8 to 11 feet
occasionally to 14 feet. 
.tuesday...north winds 20 to 30 knots. rain showers likely
through early afternoon. waves building to 9 to 12 feet
occasionally to 15 feet, then subsiding to 5 to 8 feet
occasionally to 10 feet. 
.tuesday night...north winds 15 to 25 knots. waves subsiding to
3 to 5 feet occasionally to 7 feet. 
.wednesday...southwest winds 10 to 20 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots backing south. waves
calm to 2 feet. 

$$

fzus63 kmqt 170202
glfls 
expires:202605170800;;684696

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sat may 16 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... 

ridging builds to 30.1 inches by sunday morning over lake superior 
as the 30.2 inch parent high moves into northern ontario. this ridge 
is followed by a 29.7 inch trough extending northeast over the upper 
great lakes from the central plains by early monday. a low of around 
29.6 inches then moves over lake superior on tuesday before ridging 
of 30.2 to 30.3 inches builds back over the lake wednesday; the 
ridging may increase to 30.4 inches over the upper great lakes by 
thursday as it continues east towards the st. lawrence seaway.



lsz264-170800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 pm edt sat may 16 2026

.rest of tonight...north winds 10 to 20 knots diminishing to 5 to
15 knots after midnight, then veering northeast late. waves 2 to
4 feet subsiding to calm to 2 feet. 
.sunday...east winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon. a slight chance of rain showers by mid
afternoon. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 
.sunday night...east winds 15 to 25 knots. rain showers and a
chance of thunderstorms. waves building to 4 to 7 feet
occasionally to 9 feet. 
.monday...north winds 10 to 20 knots increasing to 15 to 25 knots
by mid afternoon. rain showers through early afternoon. a slight
chance of thunderstorms. a chance of rain showers by mid
afternoon. waves subsiding to 3 to 5 feet occasionally to 7 feet.
.monday night...northeast winds 15 to 25 knots increasing to
20 to 30 knots after midnight. a chance of rain showers and a
slight chance of thunderstorms through midnight, then rain
showers after midnight. waves building to 7 to 10 feet
occasionally to 13 feet. 
.tuesday...north winds 20 to 30 knots. rain showers through early
afternoon. a chance of rain showers by mid afternoon. waves 7 to
10 feet occasionally to 13 feet. 
.tuesday night...north winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. waves subsiding to 3 to 6 feet
occasionally to 8 feet. 
.wednesday...northwest winds 15 to 25 knots becoming west 5 to
15 knots. waves subsiding to calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots backing south. waves
calm to 2 feet. 

$$

fzus63 kmqt 170202
glfls 
expires:202605170800;;684697

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sat may 16 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... 

ridging builds to 30.1 inches by sunday morning over lake superior 
as the 30.2 inch parent high moves into northern ontario. this ridge 
is followed by a 29.7 inch trough extending northeast over the upper 
great lakes from the central plains by early monday. a low of around 
29.6 inches then moves over lake superior on tuesday before ridging 
of 30.2 to 30.3 inches builds back over the lake wednesday; the 
ridging may increase to 30.4 inches over the upper great lakes by 
thursday as it continues east towards the st. lawrence seaway.



lsz265-170800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 pm edt sat may 16 2026

.rest of tonight...north winds 10 to 20 knots. waves calm to
2 feet. 
.sunday...east winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon. a chance of rain showers by mid afternoon.
waves building to 1 to 3 feet. 
.sunday night...east winds 15 to 25 knots becoming southeast
20 to 30 knots after midnight, then diminishing to 15 to 25 knots
late. a chance of rain showers through midnight. a chance of
thunderstorms. rain showers after midnight. waves building to
3 to 6 feet occasionally to 8 feet. 
.monday...south winds 10 to 20 knots becoming north 15 to
25 knots by mid afternoon. a chance of showers through early
afternoon. a chance of thunderstorms. showers likely by mid
afternoon. waves subsiding to 1 to 3 feet. 
.monday night...north winds 15 to 25 knots becoming northeast
10 to 20 knots after midnight. a chance of rain showers through
midnight. a slight chance of thunderstorms. rain showers after
midnight. waves building to 3 to 6 feet occasionally to 8 feet. 
.tuesday...north winds 20 to 30 knots becoming northwest gales to
35 knots by mid afternoon. rain showers likely through early
afternoon. a chance of rain showers by mid afternoon. waves
building to 7 to 11 feet occasionally to 14 feet. 
.tuesday night...northwest gales to 35 knots. waves subsiding to
6 to 9 feet occasionally to 11 feet. 
.wednesday...northwest winds 20 to 30 knots becoming west 10 to
20 knots. waves subsiding to calm to 2 feet. 
.thursday...southeast winds 10 to 20 knots veering south. waves
calm to 2 feet. 

$$

fzus63 kmqt 170202
glfls 
expires:202605170800;;684698

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sat may 16 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... 

ridging builds to 30.1 inches by sunday morning over lake superior 
as the 30.2 inch parent high moves into northern ontario. this ridge 
is followed by a 29.7 inch trough extending northeast over the upper 
great lakes from the central plains by early monday. a low of around 
29.6 inches then moves over lake superior on tuesday before ridging 
of 30.2 to 30.3 inches builds back over the lake wednesday; the 
ridging may increase to 30.4 inches over the upper great lakes by 
thursday as it continues east towards the st. lawrence seaway.



lsz266-170800-
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 sat may 16 2026

.rest of tonight...north winds 10 to 20 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.sunday...northeast winds 10 to 20 knots veering east in the
afternoon. a slight chance of rain showers by mid afternoon.
waves 1 to 3 feet. 
.sunday night...east winds 15 to 25 knots becoming southeast
20 to 30 knots after midnight. a chance of rain showers through
midnight. a chance of thunderstorms. rain showers after midnight.
waves building to 4 to 7 feet occasionally to 9 feet. 
.monday...south winds 15 to 25 knots backing north by mid
afternoon. a chance of showers through early afternoon. a slight
chance of thunderstorms. showers by mid afternoon. waves
subsiding to 3 to 5 feet occasionally to 7 feet. 
.monday night...north winds 15 to 25 knots becoming northeast
20 to 30 knots after midnight. a chance of rain showers through
midnight. a slight chance of thunderstorms. rain showers after
midnight. waves building to 4 to 8 feet occasionally to 10 feet. 
.tuesday...east winds 20 to 30 knots becoming northwest gales to
35 knots by mid afternoon. rain showers through early afternoon.
a chance of rain showers by mid afternoon. waves building to 8 to
11 feet occasionally to 14 feet. 
.tuesday night...northwest gales to 35 knots. waves subsiding to
7 to 10 feet occasionally to 13 feet. 
.wednesday...northwest winds 20 to 30 knots becoming west 10 to
20 knots. waves subsiding to calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots becoming south 10 to
20 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 

$$