fzus53 kdlh 212201
nshdlh
expires:202605220400;;421830

nearshore marine forecast
national weather service duluth mn
500 pm cdt thu may 21 2026

for waters within five 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.


lsz148-220400-
oak point to saxon harbor wi-
500 pm cdt thu may 21 2026

.tonight...east wind 10 to 15 knots with gusts to around 20 knots
becoming southeast 5 knots after midnight. partly cloudy in the
evening then becoming mostly cloudy. waves 1 to 3 feet. 
.friday...northeast wind 5 to 10 knots rising to 15 to 20 knots
in the afternoon. mostly sunny. waves 1 to 3 feet building to
2 to 4 feet late in the afternoon. 
.friday night...east wind 10 to 15 knots. gusts up to 20 knots
early in the evening. rain showers likely after midnight. waves
2 to 4 feet subsiding to 1 to 3 feet after midnight. a small
craft advisory may be needed. 
.saturday...east wind 5 to 10 knots. rain showers likely in the
morning, then chance of rain showers in the afternoon. waves 1 to
2 feet. 

$$

fzus53 kdlh 212201
nshdlh
expires:202605220400;;421826

nearshore marine forecast
national weather service duluth mn
500 pm cdt thu may 21 2026

for waters within five 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.


lsz146-220400-
port wing to sand island wi-
500 pm cdt thu may 21 2026

.tonight...northeast wind 10 to 15 knots with gusts to around
20 knots easing to 5 knots late in the night. mostly cloudy.
waves 1 to 3 feet subsiding to 1 to 2 feet in the late evening
and overnight. 
.friday...northeast wind 15 to 20 knots. mostly sunny. waves 1 to
2 feet building to 2 to 4 feet in the afternoon. a small craft
advisory may be needed. 
.friday night...northeast wind 15 to 20 knots becoming east 5 to
10 knots after midnight. rain showers after midnight. waves 3 to
5 feet. a small craft advisory may be needed. 
.saturday...northeast wind 5 to 10 knots. rain showers likely in
the morning, then slight chance of rain showers in the afternoon.
waves 1 to 2 feet. 

$$

fzus53 kdlh 212201
nshdlh
expires:202605220400;;421827

nearshore marine forecast
national weather service duluth mn
500 pm cdt thu may 21 2026

for waters within five 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.


lsz147-220400-
sand island to bayfield wi-
500 pm cdt thu may 21 2026

.tonight...northeast wind 5 to 10 knots with gusts to around
20 knots becoming north late in the night. partly cloudy in the
evening then becoming mostly cloudy. waves 1 to 2 feet. 
.friday...northeast wind 15 to 20 knots. mostly sunny. waves 1 to
3 feet building to 2 to 4 feet late in the afternoon. a small
craft advisory may be needed. 
.friday night...east wind 15 to 20 knots with gusts to around
25 knots easing to 5 to 10 knots with gusts to around 20 knots in
the late evening and overnight. rain showers likely after
midnight. waves 3 to 5 feet subsiding to 1 to 3 feet early in the
morning. a small craft advisory may be needed. 
.saturday...east wind 5 to 10 knots. rain showers through the
day. waves 1 to 2 feet. 

$$

fzus53 kdlh 212201
nshdlh
expires:202605220400;;421829

nearshore marine forecast
national weather service duluth mn
500 pm cdt thu may 21 2026

for waters within five 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.


lsz121-220400-
chequamegon bay-bayfield to oak point wi-
500 pm cdt thu may 21 2026

.tonight...northeast wind 10 to 15 knots with gusts to around
20 knots becoming south 5 knots after midnight. partly cloudy in
the evening then becoming mostly cloudy. waves 1 to 2 feet. 
.friday...northeast wind 15 to 20 knots. mostly sunny. waves 1 to
2 feet. 
.friday night...east wind 10 to 15 knots with gusts to around
20 knots easing to 5 knots early in the morning. slight chance of
rain showers after midnight. waves 1 to 2 feet. 
.saturday...east wind 5 knots. rain showers likely in the
morning, then slight chance of rain showers in the afternoon.
waves 1 foot or less. 

$$

fzus53 kdlh 212201
nshdlh
expires:202605220400;;421820

nearshore marine forecast
national weather service duluth mn
500 pm cdt thu may 21 2026

for waters within five 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.


lsz140-220400-
grand portage to grand marais mn-
500 pm cdt thu may 21 2026

.tonight...northeast wind 5 to 10 knots. mostly clear early in
the evening then becoming mostly cloudy. waves 1 to 2 feet. 
.friday...northeast wind 15 to 20 knots with gusts to around
25 knots. mostly sunny. waves 1 to 2 feet building to 1 to 3 feet
late in the afternoon. 
.friday night...east wind 15 to 20 knots. gusts up to 30 knots
decreasing to 20 knots. chance of rain showers after midnight.
waves 3 to 5 feet. a small craft advisory may be needed. 
.saturday...east wind 10 to 15 knots. gusts up to 20 knots in the
morning. rain showers. waves 2 to 4 feet. 

$$

fzus53 kdlh 212201
nshdlh
expires:202605220400;;421821

nearshore marine forecast
national weather service duluth mn
500 pm cdt thu may 21 2026

for waters within five 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.


lsz141-220400-
grand marais to taconite harbor mn-
500 pm cdt thu may 21 2026

.tonight...northeast wind 5 to 10 knots. partly cloudy then
becoming mostly cloudy in the late evening and early morning then
becoming partly cloudy. waves 1 to 2 feet. 
.friday...east wind 15 to 20 knots with gusts to around 25 knots.
mostly sunny. waves 1 to 3 feet building to 2 to 4 feet late in
the afternoon. a small craft advisory may be needed. 
.friday night...east wind 15 to 20 knots. gusts up to 30 knots
decreasing to 20 knots after midnight. rain showers likely after
midnight. waves 3 to 5 feet. waves occasionally to 7 feet. a
small craft advisory may be needed. 
.saturday...east wind 10 to 15 knots. gusts up to 20 knots until
late afternoon. rain showers. waves 2 to 4 feet subsiding to 1 to
3 feet late in the afternoon. 

$$

fzus53 kdlh 212201
nshdlh
expires:202605220400;;421822

nearshore marine forecast
national weather service duluth mn
500 pm cdt thu may 21 2026

for waters within five 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.


lsz142-220400-
taconite harbor to silver bay harbor mn-
500 pm cdt thu may 21 2026

.tonight...northeast wind 5 to 10 knots. partly cloudy then
becoming mostly cloudy in the late evening and early morning then
becoming partly cloudy. waves 1 to 2 feet. 
.friday...northeast wind 15 to 20 knots with gusts to around
25 knots. mostly sunny. waves 1 to 3 feet building to 2 to 4 feet
late in the afternoon. a small craft advisory may be needed. 
.friday night...northeast wind 15 to 20 knots with gusts to
around 25 knots becoming east 5 to 10 knots with gusts to around
20 knots early in the morning. rain showers after midnight. waves
3 to 5 feet. waves occasionally to 7 feet. a small craft advisory
may be needed. 
.saturday...northeast wind 5 to 10 knots. gusts up to 20 knots in
the morning. rain showers. waves 2 to 4 feet subsiding to 1 to
3 feet in the afternoon. 

$$

fzus53 kdlh 212201
nshdlh
expires:202605220400;;421823

nearshore marine forecast
national weather service duluth mn
500 pm cdt thu may 21 2026

for waters within five 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.


lsz143-220400-
silver bay harbor to two harbors mn-
500 pm cdt thu may 21 2026

.tonight...northeast wind 10 to 15 knots with gusts to around
20 knots easing to 5 knots late in the night. mostly cloudy until
early morning then becoming partly cloudy. waves 1 to 3 feet. 
.friday...northeast wind 15 to 20 knots with gusts to around
25 knots. mostly sunny. waves 1 to 2 feet building to 2 to 4 feet
in the afternoon. a small craft advisory may be needed. 
.friday night...northeast wind 15 to 20 knots with gusts to
around 25 knots easing to 10 to 15 knots with gusts to around
20 knots after midnight. chance of rain showers in the evening,
then rain showers after midnight. waves 3 to 5 feet. waves
occasionally to 7 feet. a small craft advisory may be needed. 
.saturday...northeast wind 10 to 15 knots. gusts up to 20 knots
early in the morning. rain showers likely in the morning, then
chance of rain showers in the afternoon. waves 1 to 3 feet. 

$$

fzus53 kdlh 212201
nshdlh
expires:202605220400;;421824

nearshore marine forecast
national weather service duluth mn
500 pm cdt thu may 21 2026

for waters within five 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.


lsz144-220400-
two harbors to duluth mn-
500 pm cdt thu may 21 2026

...small craft advisory in effect until 10 pm cdt this evening...

.tonight...northeast wind 15 to 20 knots with gusts to around
25 knots easing to 5 to 10 knots after midnight. mostly cloudy.
waves 2 to 4 feet subsiding to 1 to 2 feet after midnight. 
.friday...northeast wind 15 to 20 knots with gusts to around
25 knots. mostly sunny. waves 1 to 2 feet building to 3 to 5 feet
in the afternoon. a small craft advisory may be needed. 
.friday night...northeast wind 20 to 25 knots with gusts to
around 30 knots easing to 10 to 15 knots with gusts to around
20 knots after midnight. chance of rain showers in the evening,
then rain showers after midnight. waves 4 to 6 feet. waves
occasionally to 7 feet. a small craft advisory may be needed. 
.saturday...northeast wind 10 to 15 knots. gusts up to 20 knots
in the morning. rain showers likely. waves 1 to 3 feet. 

$$

fzus53 kdlh 212201
nshdlh
expires:202605220400;;421825

nearshore marine forecast
national weather service duluth mn
500 pm cdt thu may 21 2026

for waters within five 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.


lsz145-220400-
duluth mn to port wing wi-
500 pm cdt thu may 21 2026

...small craft advisory in effect until 10 pm cdt this evening...

.tonight...northeast wind 15 to 20 knots with gusts to around
25 knots easing to 5 to 10 knots after midnight. mostly cloudy
then becoming partly cloudy late in the evening then becoming
mostly cloudy. waves 2 to 4 feet subsiding to 1 to 2 feet after
midnight. 
.friday...northeast wind 15 to 20 knots with gusts to around
25 knots. mostly sunny. waves 1 to 3 feet building to 3 to 5 feet
in the afternoon. waves occasionally to 7 feet. a small craft
advisory may be needed. 
.friday night...northeast wind 20 to 25 knots with gusts to
around 30 knots easing to 10 to 15 knots with gusts to around
20 knots after midnight. chance of rain showers in the evening,
then rain showers after midnight. waves 4 to 6 feet subsiding to
1 to 3 feet early in the morning. waves occasionally to 7 feet. a
small craft advisory may be needed. 
.saturday...northeast wind 10 to 15 knots. gusts up to 20 knots
in the morning. rain showers in the morning, then rain showers
likely in the afternoon. waves 1 to 3 feet. 

$$

fzus53 kmqt 212101
nshmqt
expires:202605220800;;419510

nearshore marine forecast
national weather service marquette mi
500 pm edt thu may 21 2026

for waters within five nautical miles of shore

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.


lsz242-220800-
ontonagon to upper entrance of portage canal mi-
500 pm edt thu may 21 2026

.late this afternoon...east wind 10 to 15 knots. sunny. waves
1 to 2 feet. 
.tonight...east wind 10 to 15 knots veering southeast less than
10 knots by midnight. partly cloudy. waves 1 to 2 feet. 
.friday...east wind 10 to 20 knots. mostly sunny. waves building
to 1 to 2 feet. 
.friday night...east wind 10 to 20 knots. cloudy. a slight chance
of rain showers after midnight. waves building to 2 to 3 feet,
then subsiding to 1 to 2 feet. 
.saturday...east wind 5 to 15 knots. cloudy. rain showers likely
in the morning, then a chance of rain showers in the afternoon.
waves 1 to 2 feet. 

$$

fzus53 kmqt 212101
nshmqt
expires:202605220800;;419508

nearshore marine forecast
national weather service marquette mi
500 pm edt thu may 21 2026

for waters within five nautical miles of shore

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.


lsz240-241-220800-
saxon harbor wi to black river mi-
black river to ontonagon mi-
500 pm edt thu may 21 2026 /400 pm cdt thu may 21 2026/

.late this afternoon...northeast wind 10 to 15 knots. sunny.
waves 1 to 2 feet. 
.tonight...east wind 10 to 15 knots veering southeast less than
10 knots by midnight. mostly clear through midnight then becoming
mostly cloudy. waves 1 to 2 feet. 
.friday...east wind less than 10 knots increasing to 10 to
15 knots by late morning. partly cloudy. waves building to 2 to
3 feet. 
.friday night...east wind 5 to 15 knots. cloudy. a chance of rain
showers after midnight. waves subsiding to 1 to 2 feet. 
.saturday...east wind less than 10 knots. mostly cloudy. rain
showers likely in the morning, then a chance of rain showers in
the afternoon. waves calm to 1 foot. 

$$