059
FZUS53 KDLH 181123
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
623 AM CDT SAT APR 18 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.
LSZ140-181600-
GRAND PORTAGE TO GRAND MARAIS MN-
623 AM CDT SAT APR 18 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
TODAY
WEST WIND 20 TO 25 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 30 KNOTS IN THE LATE MORNING AND AFTERNOON. CHANCE
OF FLURRIES IN THE AFTERNOON. WAVES 4 TO 6 FEET. WAVES
OCCASIONALLY TO 8 FEET.
TONIGHT
NORTHWEST WIND 20 TO 25 KNOTS. GUSTS UP TO 30 KNOTS
DECREASING TO 25 KNOTS AFTER MIDNIGHT. MOSTLY CLOUDY IN THE
EVENING THEN BECOMING PARTLY CLOUDY. WAVES 3 TO 5 FEET SUBSIDING
TO 1 TO 3 FEET. WAVES OCCASIONALLY TO 7 FEET.
SUNDAY
NORTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS
DECREASING TO 20 KNOTS IN THE LATE MORNING AND AFTERNOON. MOSTLY
SUNNY. WAVES 1 TO 2 FEET.
SUNDAY NIGHT
NORTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO
20 KNOTS EARLY IN THE EVENING. MOSTLY CLEAR. WAVES 1 FOOT OR
LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ141-181600-
GRAND MARAIS TO TACONITE HARBOR MN-
623 AM CDT SAT APR 18 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
TODAY
WEST WIND 20 TO 25 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 30 KNOTS IN THE LATE MORNING AND AFTERNOON. CHANCE
OF FLURRIES IN THE AFTERNOON. WAVES 3 TO 5 FEET.
TONIGHT
NORTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO 30 KNOTS
DECREASING TO 20 KNOTS. MOSTLY CLOUDY IN THE EVENING THEN
BECOMING PARTLY CLOUDY. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO
2 FEET AFTER MIDNIGHT.
SUNDAY
NORTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. SUNNY. WAVES 1 FOOT OR LESS.
SUNDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES
1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ142-181600-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
623 AM CDT SAT APR 18 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
TODAY
WEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND 25 KNOTS.
CHANCE OF FLURRIES EARLY IN THE AFTERNOON. WAVES 1 TO 2 FEET
BUILDING TO 1 TO 3 FEET IN THE AFTERNOON.
TONIGHT
WEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND 25 KNOTS
BECOMING NORTHWEST 5 TO 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS
AFTER MIDNIGHT. MOSTLY CLOUDY IN THE EVENING THEN CLEARING. WAVES
1 TO 3 FEET.
SUNDAY
NORTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN
THE MORNING. SUNNY. WAVES 1 FOOT OR LESS.
SUNDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES
1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ143-181600-
SILVER BAY HARBOR TO TWO HARBORS MN-
623 AM CDT SAT APR 18 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
TODAY
WEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND 25 KNOTS.
CHANCE OF FLURRIES EARLY IN THE AFTERNOON. WAVES 1 TO 3 FEET
BUILDING TO 2 TO 4 FEET IN THE LATE MORNING AND AFTERNOON.
TONIGHT
WEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND 25 KNOTS
BECOMING NORTHWEST 5 TO 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS
AFTER MIDNIGHT. MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY
CLOUDY. WAVES 1 TO 3 FEET SUBSIDING TO 1 TO 2 FEET IN THE LATE
EVENING AND OVERNIGHT.
SUNDAY
NORTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE MORNING. SUNNY. WAVES 1 FOOT OR LESS.
SUNDAY NIGHT
NORTHWEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES
1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ144-181600-
TWO HARBORS TO DULUTH MN-
623 AM CDT SAT APR 18 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
TODAY
WEST WIND 20 TO 25 KNOTS WITH GUSTS TO AROUND 30 KNOTS.
CHANCE OF FLURRIES EARLY IN THE AFTERNOON. WAVES 2 TO 4 FEET.
TONIGHT
WEST WIND 20 TO 25 KNOTS WITH GUSTS TO AROUND 30 KNOTS
BECOMING NORTHWEST 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS
AFTER MIDNIGHT. PARTLY CLOUDY. WAVES 2 TO 4 FEET SUBSIDING TO
1 TO 3 FEET IN THE LATE EVENING AND OVERNIGHT.
SUNDAY
NORTHWEST WIND 10 TO 15 KNOTS. SUNNY. WAVES 1 FOOT OR
LESS.
SUNDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST
EARLY IN THE MORNING. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ145-181600-
DULUTH MN TO PORT WING WI-
623 AM CDT SAT APR 18 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
TODAY
WEST WIND 20 TO 25 KNOTS WITH GUSTS TO AROUND 30 KNOTS.
CHANCE OF FLURRIES AND SPRINKLES IN THE AFTERNOON. WAVES 4 TO
6 FEET. WAVES OCCASIONALLY TO 7 FEET.
TONIGHT
WEST WIND 20 TO 25 KNOTS WITH GUSTS TO AROUND 30 KNOTS
BECOMING NORTHWEST 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS
AFTER MIDNIGHT. PARTLY CLOUDY. WAVES 3 TO 5 FEET SUBSIDING TO
1 TO 3 FEET AFTER MIDNIGHT. WAVES OCCASIONALLY TO 7 FEET.
SUNDAY
NORTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE MORNING. SUNNY. WAVES 1 TO 2 FEET.
SUNDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS BECOMING SOUTH EARLY
IN THE MORNING. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ146-181600-
PORT WING TO SAND ISLAND WI-
623 AM CDT SAT APR 18 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
TODAY
WEST WIND 20 TO 25 KNOTS WITH GUSTS TO AROUND 30 KNOTS.
CHANCE OF FLURRIES IN THE AFTERNOON. CHANCE OF SPRINKLES LATE IN
THE AFTERNOON. WAVES 4 TO 6 FEET. WAVES OCCASIONALLY TO 8 FEET.
TONIGHT
NORTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO 30 KNOTS
DECREASING TO 20 KNOTS. MOSTLY CLOUDY IN THE EVENING THEN
BECOMING PARTLY CLOUDY. WAVES 4 TO 6 FEET SUBSIDING TO 1 TO
3 FEET. WAVES OCCASIONALLY TO 8 FEET.
SUNDAY
NORTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS BECOMING WEST 5 KNOTS LATE IN THE AFTERNOON. SUNNY.
WAVES 1 TO 2 FEET.
SUNDAY NIGHT
NORTHWEST WIND 5 KNOTS BECOMING SOUTH EARLY IN
THE MORNING. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ147-181600-
SAND ISLAND TO BAYFIELD WI-
623 AM CDT SAT APR 18 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
TODAY
WEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND 30 KNOTS.
CHANCE OF FLURRIES IN THE AFTERNOON. CHANCE OF SPRINKLES LATE IN
THE AFTERNOON. WAVES 4 TO 6 FEET. WAVES OCCASIONALLY TO 8 FEET.
TONIGHT
NORTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO 30 KNOTS
DECREASING TO 20 KNOTS. CHANCE OF SPRINKLES IN THE EVENING. WAVES
4 TO 6 FEET SUBSIDING TO 1 TO 3 FEET. WAVES OCCASIONALLY TO
8 FEET.
SUNDAY
NORTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS BECOMING WEST 5 KNOTS LATE IN THE AFTERNOON. SUNNY.
WAVES 1 TO 2 FEET.
SUNDAY NIGHT
NORTHWEST WIND 5 KNOTS BECOMING NORTH AFTER
MIDNIGHT, THEN BECOMING EAST EARLY IN THE MORNING. MOSTLY CLEAR.
WAVES 1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ150-181600-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
623 AM CDT SAT APR 18 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
TODAY
WEST WIND 20 TO 25 KNOTS WITH GUSTS TO AROUND 30 KNOTS.
CHANCE OF FLURRIES IN THE AFTERNOON. CHANCE OF SPRINKLES LATE IN
THE AFTERNOON. WAVES 4 TO 7 FEET. WAVES OCCASIONALLY TO 9 FEET.
TONIGHT
NORTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO 30 KNOTS
DECREASING TO 20 KNOTS. CHANCE OF SPRINKLES AND FLURRIES IN THE
EVENING. WAVES 4 TO 7 FEET SUBSIDING TO 2 TO 4 FEET EARLY IN THE
MORNING. WAVES OCCASIONALLY TO 9 FEET.
SUNDAY
NORTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
UNTIL LATE AFTERNOON. SUNNY. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO
3 FEET IN THE AFTERNOON.
SUNDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS BECOMING NORTHEAST
EARLY IN THE MORNING. MOSTLY CLEAR. WAVES 1 TO 2 FEET.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ121-181600-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
623 AM CDT SAT APR 18 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
TODAY
WEST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 30 KNOTS LATE IN THE AFTERNOON. CHANCE OF FLURRIES
IN THE AFTERNOON. CHANCE OF SPRINKLES LATE IN THE AFTERNOON.
WAVES 1 TO 2 FEET.
TONIGHT
WEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND 25 KNOTS
BECOMING NORTHWEST 5 TO 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS
AFTER MIDNIGHT. CHANCE OF SPRINKLES IN THE EVENING. WAVES 1 TO
2 FEET.
SUNDAY
NORTHWEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 FOOT OR
LESS.
SUNDAY NIGHT
NORTHWEST WIND 5 KNOTS BECOMING SOUTHWEST EARLY
IN THE MORNING. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ148-181600-
OAK POINT TO SAXON HARBOR WI-
623 AM CDT SAT APR 18 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
TODAY
WEST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 30 KNOTS IN THE LATE MORNING AND AFTERNOON. CHANCE
OF FLURRIES IN THE AFTERNOON. CHANCE OF SPRINKLES LATE IN THE
AFTERNOON. WAVES 2 TO 4 FEET.
TONIGHT
NORTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS
DECREASING TO 20 KNOTS AFTER MIDNIGHT. CHANCE OF SPRINKLES AND
FLURRIES IN THE EVENING. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO
2 FEET AFTER MIDNIGHT.
SUNDAY
NORTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE MORNING. SUNNY. WAVES 1 TO 2 FEET.
SUNDAY NIGHT
NORTHWEST WIND 5 KNOTS BECOMING SOUTH EARLY IN
THE MORNING. MOSTLY CLEAR. 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
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page