904  
FZUS53 KDLH 130400  
NSHDLH  
 
NEARSHORE MARINE FORECAST  
NATIONAL WEATHER SERVICE DULUTH MN  
1100 PM CDT TUE MAY 12 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.  
 
LSZ140-131000-  
GRAND PORTAGE TO GRAND MARAIS MN-  
1100 PM CDT TUE MAY 12 2026  
   
REST OF TONIGHT  
NORTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO  
20 KNOTS LATE IN THE EVENING. SLIGHT CHANCE OF RAIN SHOWERS AND  
SNOW SHOWERS LATE IN THE EVENING. WAVES 1 TO 3 FEET.    
WEDNESDAY  
NORTHWEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 TO  
2 FEET.    
WEDNESDAY NIGHT  
NORTH WIND 5 TO 10 KNOTS. PARTLY CLOUDY. WAVES  
1 FOOT OR LESS.    
THURSDAY  
EAST WIND 5 KNOTS RISING TO 10 TO 15 KNOTS WITH GUSTS  
TO AROUND 20 KNOTS IN THE LATE MORNING AND AFTERNOON. MOSTLY  
SUNNY. WAVES 1 TO 2 FEET.  
 
 
 
LSZ141-131000-  
GRAND MARAIS TO TACONITE HARBOR MN-  
1100 PM CDT TUE MAY 12 2026  
   
REST OF TONIGHT  
NORTHWEST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF  
RAIN SHOWERS LATE IN THE EVENING. WAVES 1 TO 2 FEET.    
WEDNESDAY  
NORTHWEST WIND 5 KNOTS. SUNNY. WAVES 1 TO 2 FEET.    
WEDNESDAY NIGHT  
NORTHWEST WIND 5 KNOTS EARLY IN THE EVENING  
BECOMING VARIABLE 10 KNOTS OR LESS, THEN BECOMING NORTHEAST  
5 KNOTS AFTER MIDNIGHT. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.    
THURSDAY  
EAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND  
20 KNOTS. MOSTLY SUNNY. WAVES 1 TO 2 FEET.  
 
 
 
LSZ142-131000-  
TACONITE HARBOR TO SILVER BAY HARBOR MN-  
1100 PM CDT TUE MAY 12 2026  
   
REST OF TONIGHT  
NORTHWEST WIND 5 KNOTS. SLIGHT CHANCE OF RAIN  
SHOWERS LATE IN THE EVENING. WAVES 1 TO 2 FEET.    
WEDNESDAY  
NORTHWEST WIND 5 KNOTS BECOMING WEST LATE IN THE  
AFTERNOON. SUNNY. WAVES 1 TO 2 FEET.    
WEDNESDAY NIGHT  
NORTHWEST WIND 5 KNOTS EARLY IN THE EVENING  
BECOMING VARIABLE 10 KNOTS OR LESS, THEN BECOMING NORTH 5 KNOTS  
AFTER MIDNIGHT. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.    
THURSDAY  
NORTHEAST WIND 5 KNOTS BECOMING EAST IN THE LATE  
MORNING AND AFTERNOON. MOSTLY SUNNY. WAVES 1 TO 2 FEET.  
 
 
 
LSZ143-131000-  
SILVER BAY HARBOR TO TWO HARBORS MN-  
1100 PM CDT TUE MAY 12 2026  
   
REST OF TONIGHT  
NORTHWEST WIND 5 KNOTS. SLIGHT CHANCE OF RAIN  
SHOWERS LATE IN THE EVENING. WAVES 1 TO 2 FEET.    
WEDNESDAY  
NORTHWEST WIND 5 KNOTS BECOMING SOUTH LATE IN THE  
AFTERNOON. SUNNY. WAVES 1 TO 2 FEET.    
WEDNESDAY NIGHT  
NORTH WIND 5 KNOTS EARLY IN THE EVENING  
BECOMING VARIABLE 10 KNOTS OR LESS, THEN BECOMING NORTH 5 KNOTS  
EARLY IN THE MORNING. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.    
THURSDAY  
NORTHEAST WIND 5 KNOTS BECOMING EAST 10 TO 15 KNOTS  
WITH GUSTS TO AROUND 20 KNOTS IN THE AFTERNOON. MOSTLY SUNNY.  
WAVES 1 TO 2 FEET.  
 
 
 
LSZ144-131000-  
TWO HARBORS TO DULUTH MN-  
1100 PM CDT TUE MAY 12 2026  
   
REST OF TONIGHT  
NORTHWEST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF  
RAIN SHOWERS LATE IN THE EVENING. WAVES 1 FOOT OR LESS.    
WEDNESDAY  
NORTHWEST WIND 5 TO 10 KNOTS BECOMING EAST LATE IN  
THE AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.    
WEDNESDAY NIGHT  
NORTHEAST WIND 5 KNOTS. MOSTLY CLEAR. WAVES  
1 FOOT OR LESS.    
THURSDAY  
EAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND  
20 KNOTS. MOSTLY SUNNY. WAVES 1 TO 2 FEET.  
 
 
 
LSZ145-131000-  
DULUTH MN TO PORT WING WI-  
1100 PM CDT TUE MAY 12 2026  
   
REST OF TONIGHT  
NORTHWEST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF  
RAIN SHOWERS LATE IN THE EVENING. WAVES 1 FOOT OR LESS.    
WEDNESDAY  
NORTHWEST WIND 5 TO 10 KNOTS BECOMING EAST LATE IN  
THE AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.    
WEDNESDAY NIGHT  
EAST WIND 5 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT  
OR LESS.    
THURSDAY  
EAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND  
20 KNOTS. MOSTLY SUNNY. WAVES 1 TO 2 FEET.  
 
 
 
LSZ146-131000-  
PORT WING TO SAND ISLAND WI-  
1100 PM CDT TUE MAY 12 2026  
   
REST OF TONIGHT  
NORTHWEST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF  
RAIN SHOWERS LATE IN THE EVENING. WAVES 1 TO 2 FEET.    
WEDNESDAY  
NORTHWEST WIND 5 KNOTS BECOMING WEST EARLY IN THE  
AFTERNOON, THEN BECOMING SOUTHEAST LATE IN THE AFTERNOON. SUNNY.  
WAVES 1 FOOT OR LESS.    
WEDNESDAY NIGHT  
NORTHEAST WIND 5 KNOTS BECOMING EAST AFTER  
MIDNIGHT. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.    
THURSDAY  
VARIABLE WINDS 10 KNOTS OR LESS BECOMING EAST 5 TO  
10 KNOTS IN THE LATE MORNING AND AFTERNOON. MOSTLY SUNNY. WAVES  
1 FOOT OR LESS.  
 
 
 
LSZ147-131000-  
SAND ISLAND TO BAYFIELD WI-  
1100 PM CDT TUE MAY 12 2026  
   
REST OF TONIGHT  
NORTHWEST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF  
RAIN SHOWERS LATE IN THE EVENING. WAVES 1 TO 2 FEET.    
WEDNESDAY  
NORTHWEST WIND 5 KNOTS. SUNNY. WAVES 1 FOOT OR LESS.   
WEDNESDAY NIGHT  
EAST WIND 5 KNOTS EARLY IN THE EVENING  
BECOMING VARIABLE 10 KNOTS OR LESS, THEN BECOMING NORTHEAST  
5 KNOTS AFTER MIDNIGHT. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.    
THURSDAY  
EAST WIND 5 TO 10 KNOTS. MOSTLY SUNNY. WAVES 1 FOOT  
OR LESS.  
 
 
 
LSZ150-131000-  
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-  
1100 PM CDT TUE MAY 12 2026  
   
REST OF TONIGHT  
NORTHWEST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF  
RAIN SHOWERS LATE IN THE EVENING. WAVES 1 TO 3 FEET.    
WEDNESDAY  
NORTHWEST WIND 5 TO 10 KNOTS BECOMING WEST LATE IN  
THE AFTERNOON. SUNNY. WAVES 1 TO 2 FEET.    
WEDNESDAY NIGHT  
SOUTH WIND 5 KNOTS BECOMING EAST IN THE LATE  
EVENING AND OVERNIGHT. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.    
THURSDAY  
EAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND  
20 KNOTS. MOSTLY SUNNY. WAVES 1 TO 2 FEET.  
 
 
 
LSZ121-131000-  
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-  
1100 PM CDT TUE MAY 12 2026  
   
REST OF TONIGHT  
NORTH WIND 5 TO 10 KNOTS. CHANCE OF RAIN  
SHOWERS LATE IN THE EVENING, THEN SLIGHT CHANCE OF RAIN SHOWERS  
AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.    
WEDNESDAY  
NORTH WIND 5 TO 10 KNOTS BECOMING NORTHEAST LATE IN  
THE AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.    
WEDNESDAY NIGHT  
EAST WIND 5 KNOTS EARLY IN THE EVENING  
BECOMING VARIABLE 10 KNOTS OR LESS, THEN BECOMING SOUTHEAST  
5 KNOTS EARLY IN THE MORNING. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.   
THURSDAY  
SOUTHEAST WIND 5 TO 10 KNOTS. MOSTLY SUNNY. WAVES  
1 FOOT OR LESS.  
 
 
 
LSZ148-131000-  
OAK POINT TO SAXON HARBOR WI-  
1100 PM CDT TUE MAY 12 2026  
   
REST OF TONIGHT  
NORTH WIND 5 TO 10 KNOTS. CHANCE OF RAIN  
SHOWERS LATE IN THE EVENING, THEN SLIGHT CHANCE OF RAIN SHOWERS  
AFTER MIDNIGHT. WAVES 1 TO 2 FEET.    
WEDNESDAY  
NORTHWEST WIND 5 KNOTS BECOMING NORTHEAST LATE IN  
THE AFTERNOON. MOSTLY SUNNY. WAVES 1 TO 2 FEET.    
WEDNESDAY NIGHT  
SOUTHEAST WIND 5 KNOTS. MOSTLY CLEAR. WAVES  
1 FOOT OR LESS.    
THURSDAY  
EAST WIND 5 TO 10 KNOTS. MOSTLY SUNNY. WAVES 1 FOOT  
OR LESS.  
 
 
 
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:  
WEATHER.GOV/GREATLAKES  
 
WFO DLH  
CLICK HERE TO GO TO PREVIOUS BULLETINS.
The Nexlab MN Page
The Nexlab WI Page
Main Text Page