FZUS53 KDLH 232201

NSHDLH



Nearshore Marine Forecast

National Weather Service Duluth MN

500 PM CDT Thu Apr 23 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.



LSZ140-240400-

Grand Portage to Grand Marais MN-

500 PM CDT Thu Apr 23 2026



...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING...



.TONIGHT...Northeast wind 20 to 25 knots easing to 10 to 15 knots

with gusts to around 20 knots late in the night. Rain and chance

of thunderstorms. Waves 4 to 6 feet. Waves occasionally to

8 feet. 

.FRIDAY...Northeast wind 10 to 15 knots with gusts to around

20 knots becoming northwest with gusts to around 20 knots in the

late morning and afternoon. Rain and chance of thunderstorms in

the morning, then chance of rain in the afternoon. Waves 3 to

5 feet. 

.FRIDAY NIGHT...Northwest wind 5 to 10 knots. Partly cloudy.

Waves 1 to 3 feet. 

.SATURDAY...Northwest wind 5 to 10 knots becoming southwest in

the afternoon. Mostly sunny. Waves 1 to 2 feet. 



$$



LSZ141-240400-

Grand Marais to Taconite Harbor MN-

500 PM CDT Thu Apr 23 2026



...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING...



.TONIGHT...East wind 20 to 25 knots becoming northeast 10 to

15 knots with gusts to around 20 knots late in the night. Rain

likely in the evening. Chance of thunderstorms through the night.

Rain after midnight. Waves 4 to 6 feet. Waves occasionally to

7 feet. 

.FRIDAY...North wind 10 knots with gusts to around 20 knots

becoming west with gusts to around 20 knots in the late morning

and afternoon. Chance of rain and slight chance of thunderstorms

in the morning, then slight chance of rain in the afternoon.

Waves 2 to 4 feet. 

.FRIDAY NIGHT...Northwest wind 5 knots. Mostly clear. Waves 1 to

3 feet. 

.SATURDAY...Northwest wind 5 knots becoming south in the

afternoon. Mostly sunny. Waves 1 to 2 feet. 



$$



LSZ142-240400-

Taconite Harbor to Silver Bay Harbor MN-

500 PM CDT Thu Apr 23 2026



...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING...



.TONIGHT...Northeast wind 15 to 20 knots becoming north 5 to

10 knots late in the night. Rain in the evening. Chance of

thunderstorms through the night. Rain likely after midnight.

Waves 2 to 4 feet. 

.FRIDAY...Northwest wind 5 to 10 knots with gusts to around

20 knots becoming west in the afternoon. Chance of rain in the

morning. Waves 1 to 3 feet. 

.FRIDAY NIGHT...Northwest wind 5 knots becoming north after

midnight. Mostly clear. Waves 1 to 2 feet. 

.SATURDAY...Northwest wind 5 knots becoming southwest late in the

morning, then becoming southeast in the afternoon. Mostly sunny.

Waves 1 foot or less. 



$$



LSZ143-240400-

Silver Bay Harbor to Two Harbors MN-

500 PM CDT Thu Apr 23 2026



...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING...



.TONIGHT...Northeast wind 20 to 25 knots easing to 10 to 15 knots

after midnight, then becoming northwest 5 to 10 knots late in the

night. Rain in the evening. Chance of thunderstorms through the

night. Rain likely after midnight. Waves 3 to 5 feet. Waves

occasionally to 7 feet. 

.FRIDAY...West wind 5 to 10 knots. Gusts up to 20 knots early in

the morning. Chance of rain in the morning. Waves 1 to 3 feet. 

.FRIDAY NIGHT...West wind 5 knots becoming north in the late

evening and overnight. Mostly clear. Waves 1 to 2 feet. 

.SATURDAY...North wind 5 knots becoming east in the late morning

and afternoon. Mostly sunny. Waves 1 foot or less. 



$$



LSZ144-240400-

Two Harbors to Duluth MN-

500 PM CDT Thu Apr 23 2026



...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING...



.TONIGHT...Northeast wind 20 to 25 knots easing to 10 to 15 knots

with gusts to around 20 knots after midnight, then becoming west

with gusts to around 20 knots late in the night. Rain in the

evening. Chance of thunderstorms through the night. Rain likely

after midnight. Waves 3 to 5 feet subsiding to 1 to 3 feet late

in the night. 

.FRIDAY...West wind 10 to 15 knots. Gusts up to 20 knots in the

morning. Chance of rain in the morning. Waves 1 to 3 feet. 

.FRIDAY NIGHT...West wind 5 to 10 knots becoming north in the

late evening and overnight. Mostly clear. Waves 1 foot or less. 

.SATURDAY...North wind 5 knots becoming east in the late morning

and afternoon. Mostly sunny. Waves 1 foot or less. 



$$



LSZ145-240400-

Duluth MN to Port Wing WI-

500 PM CDT Thu Apr 23 2026



...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING...



.TONIGHT...Northeast wind 15 to 20 knots becoming north 10 to

15 knots after midnight, then becoming west 5 to 10 knots with

gusts to around 20 knots late in the night. Rain in the evening.

Chance of thunderstorms through the night. Rain likely after

midnight. Waves 2 to 4 feet subsiding to 1 to 3 feet late in the

night. 

.FRIDAY...West wind 10 to 15 knots with gusts to around 20 knots

easing to 5 to 10 knots in the afternoon. Chance of rain in the

morning. Waves 1 to 3 feet. 

.FRIDAY NIGHT...West wind 5 to 10 knots becoming north after

midnight. Mostly clear. Waves 1 foot or less. 

.SATURDAY...Northeast wind 5 knots becoming east late in the

afternoon. Mostly sunny. Waves 1 foot or less. 



$$



LSZ146-240400-

Port Wing to Sand Island WI-

500 PM CDT Thu Apr 23 2026



...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING...



.TONIGHT...East wind 10 to 15 knots with gusts to around 20 knots

becoming northeast after midnight, then becoming west 5 to

10 knots late in the night. Rain in the evening. Chance of

thunderstorms through the night. Rain likely after midnight.

Waves 2 to 4 feet subsiding to 1 to 3 feet late in the night. 

.FRIDAY...West wind 10 to 15 knots becoming southwest late in the

afternoon. Chance of rain in the morning. Waves 1 to 2 feet. 

.FRIDAY NIGHT...West wind 5 to 10 knots becoming north in the

late evening and overnight. Mostly clear. Waves 1 to 2 feet. 

.SATURDAY...North wind 5 knots becoming northeast in the

afternoon. Mostly sunny. Waves 1 foot or less. 



$$



LSZ147-240400-

Sand Island to Bayfield WI-

500 PM CDT Thu Apr 23 2026



.TONIGHT...East wind 10 to 15 knots becoming west late in the

night. Rain in the evening. Chance of thunderstorms through the

night. Rain likely after midnight. Waves 1 to 3 feet. 

.FRIDAY...West wind 10 to 15 knots. Gusts up to 20 knots in the

morning. Rain likely and slight chance of thunderstorms in the

morning. Waves 1 to 2 feet. 

.FRIDAY NIGHT...West wind 5 knots becoming north in the late

evening and overnight. Mostly clear. Waves 1 to 2 feet. 

.SATURDAY...Northwest wind 5 knots early in the morning becoming

variable 10 knots or less, then becoming east 5 knots in the

afternoon. Mostly sunny. Waves 1 foot or less. 



$$



LSZ150-240400-

Outer Apostle Islands Beyond 5 NM from Mainland-

500 PM CDT Thu Apr 23 2026



.TONIGHT...East wind 15 to 20 knots becoming southwest 10 to

15 knots late in the night. Rain and chance of thunderstorms.

Waves 2 to 4 feet. 

.FRIDAY...West wind 10 to 15 knots. Gusts up to 20 knots until

late afternoon. Rain likely and slight chance of thunderstorms in

the morning. Waves 1 to 3 feet. 

.FRIDAY NIGHT...West wind 5 to 10 knots becoming north in the

late evening and overnight. Mostly clear. Waves 1 to 2 feet. 

.SATURDAY...Northwest wind 5 knots becoming east in the

afternoon. Mostly sunny. Waves 1 foot or less. 



$$



LSZ121-240400-

Chequamegon Bay-Bayfield to Oak Point WI-

500 PM CDT Thu Apr 23 2026



.TONIGHT...Southeast wind 5 to 10 knots with gusts to around

20 knots becoming west late in the night. Rain and chance of

thunderstorms. Waves 1 to 2 feet. 

.FRIDAY...West wind 5 to 10 knots. Rain likely and slight chance

of thunderstorms in the morning. Waves 1 foot or less. 

.FRIDAY NIGHT...West wind 5 knots becoming north in the late

evening and overnight. Mostly clear. Waves 1 foot or less. 

.SATURDAY...Northwest wind 5 knots becoming northeast in the late

morning and afternoon. Mostly sunny. Waves 1 foot or less. 



$$



LSZ148-240400-

Oak Point to Saxon Harbor WI-

500 PM CDT Thu Apr 23 2026



.TONIGHT...Southeast wind 10 to 15 knots with gusts to around

20 knots becoming west 5 to 10 knots late in the night. Rain and

chance of thunderstorms. Waves 1 to 3 feet. 

.FRIDAY...West wind 5 to 10 knots. Rain likely and slight chance

of thunderstorms in the morning. Waves 1 to 2 feet. 

.FRIDAY NIGHT...West wind 5 knots becoming north in the late

evening and overnight. Mostly clear. Waves 1 foot or less. 

.SATURDAY...Northwest wind 5 knots becoming northeast late in the

afternoon. Mostly sunny. Waves 1 foot or less. 



$$



Graphical marine forecasts are available online at: 

weather.gov/greatlakes 



WFO DLH