FZUS53 KDLH 200458

NSHDLH



Nearshore Marine Forecast

National Weather Service Duluth MN

1158 PM CDT Sun Apr 19 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.



LSZ140-201000-

Grand Portage to Grand Marais MN-

1158 PM CDT Sun Apr 19 2026



.REST OF TONIGHT...Northwest wind 5 to 10 knots. Mostly clear.

Waves 1 foot or less. 

.MONDAY...Southwest wind 15 to 20 knots with gusts to around

25 knots becoming south with gusts to around 25 knots late in the

afternoon. Mostly sunny in the morning then becoming mostly

cloudy. Waves 1 to 2 feet building to 3 to 5 feet in the

afternoon. A small craft advisory may be needed. 

.MONDAY NIGHT...Southwest wind 15 to 20 knots with gusts to

around 25 knots becoming west 5 to 10 knots early in the morning.

Partly cloudy. Waves 3 to 5 feet. A small craft advisory may be

needed. 

.TUESDAY...West wind 5 to 10 knots becoming southwest late in the

afternoon. Sunny. Waves 1 to 2 feet. 



Note...Wave height forecasts are for ice free areas.



$$



LSZ141-201000-

Grand Marais to Taconite Harbor MN-

1158 PM CDT Sun Apr 19 2026



.REST OF TONIGHT...Northwest wind 5 knots. Clear. Waves 1 foot or

less. 

.MONDAY...Southwest wind 5 to 10 knots becoming south 10 to

15 knots with gusts to around 20 knots in the afternoon. Mostly

sunny in the morning then becoming mostly cloudy. Waves 1 to

2 feet. 

.MONDAY NIGHT...Southwest wind 5 to 10 knots becoming west after

midnight. Mostly clear. Waves 1 to 2 feet. 

.TUESDAY...West wind 5 knots. Sunny. Waves 1 to 2 feet. 



Note...Wave height forecasts are for ice free areas.



$$



LSZ142-201000-

Taconite Harbor to Silver Bay Harbor MN-

1158 PM CDT Sun Apr 19 2026



.REST OF TONIGHT...Northwest wind 5 knots late in the evening

becoming variable 10 knots or less. Mostly clear. Waves 1 foot or

less. 

.MONDAY...Southwest wind 5 to 10 knots. Gusts up to 20 knots late

in the afternoon. Partly sunny. Waves 1 foot or less. 

.MONDAY NIGHT...Southwest wind 5 to 10 knots with gusts to around

20 knots becoming west early in the morning. Partly cloudy in the

evening then becoming clear. Waves 1 to 2 feet. 

.TUESDAY...West wind 5 knots becoming southwest early in the

afternoon, then becoming variable 10 knots or less late in the

afternoon. Sunny. Waves 1 foot or less. 



Note...Wave height forecasts are for ice free areas.



$$



LSZ143-201000-

Silver Bay Harbor to Two Harbors MN-

1158 PM CDT Sun Apr 19 2026



.REST OF TONIGHT...North wind 5 knots becoming northwest toward

daybreak. Mostly clear. Waves 1 foot or less. 

.MONDAY...Southwest wind 10 to 15 knots with gusts to around

20 knots. Partly sunny. Waves 1 to 3 feet. 

.MONDAY NIGHT...Southwest wind 10 to 15 knots with gusts to

around 20 knots becoming west 5 knots early in the morning.

Mostly clear. Waves 1 to 3 feet. 

.TUESDAY...West wind 5 knots becoming southwest in the afternoon.

Sunny. Waves 1 foot or less. 



Note...Wave height forecasts are for ice free areas.



$$



LSZ144-201000-

Two Harbors to Duluth MN-

1158 PM CDT Sun Apr 19 2026



.REST OF TONIGHT...North wind 5 to 10 knots becoming west toward

daybreak. Mostly clear. Waves 1 foot or less. 

.MONDAY...Southwest wind 15 to 20 knots with gusts to around

25 knots. Mostly sunny. Waves 1 to 3 feet. 

.MONDAY NIGHT...Southwest wind 15 to 20 knots with gusts to

around 25 knots easing to 5 to 10 knots after midnight. Mostly

clear. Waves 1 to 3 feet. 

.TUESDAY...North wind 5 knots becoming southwest in the

afternoon. Sunny. Waves 1 foot or less. 



Note...Wave height forecasts are for ice free areas.



$$



LSZ145-201000-

Duluth MN to Port Wing WI-

1158 PM CDT Sun Apr 19 2026.REST OF TONIGHT...North wind 5 to 10 knots becoming south toward

daybreak. Mostly clear. Waves 1 foot or less. 

.MONDAY...Southwest wind 15 to 20 knots with gusts to around

25 knots. Mostly sunny. Waves 1 to 3 feet. 

.MONDAY NIGHT...Southwest wind 15 to 20 knots with gusts to

around 25 knots easing to 5 to 10 knots after midnight. Mostly

clear. Waves 1 to 3 feet. 

.TUESDAY...Northwest wind 5 knots. Sunny. Waves 1 foot or less. 



Note...Wave height forecasts are for ice free areas.



$$



LSZ146-201000-

Port Wing to Sand Island WI-

1158 PM CDT Sun Apr 19 2026



.REST OF TONIGHT...North wind 5 knots becoming east toward

daybreak. Mostly clear. Waves 1 foot or less. 

.MONDAY...Southwest wind 10 to 15 knots with gusts to around

20 knots. Mostly sunny. Waves 1 to 2 feet. 

.MONDAY NIGHT...Southwest wind 10 to 15 knots. Gusts up to

20 knots in the evening. Mostly clear. Waves 1 to 2 feet. 

.TUESDAY...Northwest wind 5 knots becoming west early in the

afternoon, then becoming variable 10 knots or less late in the

afternoon. Sunny. Waves 1 foot or less. 



Note...Wave height forecasts are for ice free areas.



$$



LSZ147-201000-

Sand Island to Bayfield WI-

1158 PM CDT Sun Apr 19 2026



.REST OF TONIGHT...North wind 5 knots. Mostly clear. Waves 1 foot

or less. 

.MONDAY...Southwest wind 10 to 15 knots with gusts to around

20 knots. Partly sunny. Waves 1 foot or less. 

.MONDAY NIGHT...Southwest wind 10 to 15 knots with gusts to

around 20 knots becoming west 5 knots early in the morning.

Partly cloudy in the evening then becoming clear. Waves 1 to

2 feet. 

.TUESDAY...Northwest wind 5 knots in the morning becoming

variable 10 knots or less, then becoming south 5 knots late in

the afternoon. Sunny. Waves 1 foot or less. 



Note...Wave height forecasts are for ice free areas.



$$



LSZ150-201000-

Outer Apostle Islands Beyond 5 NM from Mainland-

1158 PM CDT Sun Apr 19 2026



.REST OF TONIGHT...Northwest wind 5 knots. Mostly clear. Waves

1 foot or less. 

.MONDAY...South wind 10 to 15 knots with gusts to around

20 knots. Partly sunny. Waves 1 to 2 feet. 

.MONDAY NIGHT...Southwest wind 10 to 15 knots with gusts to

around 20 knots becoming west 5 to 10 knots early in the morning.

Mostly clear. Waves 1 to 3 feet. 

.TUESDAY...Northwest wind 5 knots becoming south late in the

afternoon. Sunny. Waves 1 foot or less. 



Note...Wave height forecasts are for ice free areas.



$$



LSZ121-201000-

Chequamegon Bay-Bayfield to Oak Point WI-

1158 PM CDT Sun Apr 19 2026



.REST OF TONIGHT...Northwest wind 5 knots. Mostly clear. Waves

1 foot or less. 

.MONDAY...Southwest wind 10 to 15 knots with gusts to around

20 knots. Mostly sunny. Waves 1 foot or less. 

.MONDAY NIGHT...Southwest wind 10 to 15 knots with gusts to

around 20 knots becoming west 5 to 10 knots early in the morning.

Partly cloudy in the evening then becoming clear. Waves 1 foot or

less. 

.TUESDAY...Northwest wind 5 knots becoming northeast in the

afternoon. Sunny. Waves 1 foot or less. 



Note...Wave height forecasts are for ice free areas.



$$



LSZ148-201000-

Oak Point to Saxon Harbor WI-

1158 PM CDT Sun Apr 19 2026



.REST OF TONIGHT...Northwest wind 5 knots. Mostly clear. Waves

1 foot or less. 

.MONDAY...Southwest wind 10 to 15 knots with gusts to around

20 knots. Mostly sunny in the morning then becoming mostly

cloudy. Waves 1 to 2 feet. 

.MONDAY NIGHT...Southwest wind 10 to 15 knots. Gusts up to

25 knots. Partly cloudy in the evening then clearing. Waves 1 to

2 feet. 

.TUESDAY...Northwest wind 5 knots becoming north in the late

morning and early afternoon, then becoming east late in the

afternoon. Sunny. Waves 1 foot or less. 



Note...Wave height forecasts are for ice free areas.



$$



Graphical marine forecasts are available online at: 

weather.gov/greatlakes 



WFO DLH