364
FZUS53 KDLH 042218
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
518 PM CDT SAT APR 4 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.
LSZ140-050400-
GRAND PORTAGE TO GRAND MARAIS MN-
518 PM CDT SAT APR 4 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING
TONIGHT
NORTH WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
25 KNOTS BECOMING NORTHWEST WITH GUSTS TO AROUND 30 KNOTS AFTER
MIDNIGHT. SNOW EARLY IN THE EVENING, THEN SNOW LIKELY LATE IN THE
EVENING. CHANCE OF SNOW AFTER MIDNIGHT. WAVES 4 TO 6 FEET
SUBSIDING TO 2 TO 4 FEET AFTER MIDNIGHT. WAVES OCCASIONALLY TO
8 FEET.
SUNDAY
NORTHWEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
30 KNOTS BECOMING WEST 5 TO 10 KNOTS IN THE AFTERNOON. SLIGHT
CHANCE OF SNOW IN THE AFTERNOON. WAVES 1 TO 3 FEET.
SUNDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS RISING TO 10 TO
15 KNOTS WITH GUSTS TO AROUND 20 KNOTS AFTER MIDNIGHT, THEN
BECOMING NORTH 20 TO 25 KNOTS WITH GUSTS TO AROUND 30 KNOTS EARLY
IN THE MORNING. SLIGHT CHANCE OF SNOW IN THE EVENING, THEN CHANCE
OF SNOW AND RAIN AFTER MIDNIGHT. WAVES 1 TO 3 FEET. A SMALL CRAFT
ADVISORY MAY BE NEEDED.
MONDAY
NORTH WIND 20 TO 25 KNOTS WITH GUSTS TO AROUND 30 KNOTS
BECOMING NORTHWEST 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS
LATE IN THE AFTERNOON. CHANCE OF SNOW IN THE MORNING. WAVES 2 TO
4 FEET SUBSIDING TO 1 TO 3 FEET IN THE AFTERNOON. A SMALL CRAFT
ADVISORY MAY BE NEEDED.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ141-050400-
GRAND MARAIS TO TACONITE HARBOR MN-
518 PM CDT SAT APR 4 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING
TONIGHT
NORTH WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS BECOMING NORTHWEST 15 TO 20 KNOTS WITH GUSTS TO AROUND
30 KNOTS AFTER MIDNIGHT. SNOW LIKELY EARLY IN THE EVENING, THEN
CHANCE OF SNOW LATE IN THE EVENING. SLIGHT CHANCE OF SNOW AFTER
MIDNIGHT. WAVES 4 TO 7 FEET SUBSIDING TO 2 TO 4 FEET AFTER
MIDNIGHT. WAVES OCCASIONALLY TO 9 FEET.
SUNDAY
NORTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS BECOMING WEST 5 TO 10 KNOTS IN THE AFTERNOON. SLIGHT
CHANCE OF SNOW IN THE AFTERNOON. WAVES 1 TO 3 FEET.
SUNDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS RISING TO 10 TO
15 KNOTS WITH GUSTS TO AROUND 25 KNOTS EARLY IN THE MORNING.
SLIGHT CHANCE OF RAIN AND SNOW IN THE EVENING, THEN CHANCE OF
SNOW AFTER MIDNIGHT. WAVES 1 TO 2 FEET.
MONDAY
NORTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO 30 KNOTS
DECREASING TO 20 KNOTS. CHANCE OF SNOW IN THE MORNING. WAVES 1 TO
2 FEET.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ142-050400-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
518 PM CDT SAT APR 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM CDT SUNDAY
TONIGHT
NORTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
INCREASING TO 25 KNOTS IN THE LATE EVENING AND OVERNIGHT. SNOW
EARLY IN THE EVENING, THEN CHANCE OF SNOW LATE IN THE EVENING.
SLIGHT CHANCE OF SNOW AFTER MIDNIGHT. WAVES 4 TO 7 FEET SUBSIDING
TO 1 TO 3 FEET. WAVES OCCASIONALLY TO 9 FEET.
SUNDAY
NORTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS BECOMING WEST 5 TO 10 KNOTS IN THE AFTERNOON. SLIGHT
CHANCE OF RAIN AND SNOW IN THE AFTERNOON. WAVES 1 TO 2 FEET.
SUNDAY NIGHT
NORTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO
25 KNOTS EARLY IN THE MORNING. SLIGHT CHANCE OF RAIN IN THE
EVENING. CHANCE OF SNOW THROUGH THE NIGHT. WAVES 1 TO 2 FEET.
MONDAY
NORTHWEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
30 KNOTS EASING TO 5 TO 10 KNOTS LATE IN THE AFTERNOON. CHANCE OF
SNOW IN THE MORNING. WAVES 1 TO 2 FEET.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ143-050400-
SILVER BAY HARBOR TO TWO HARBORS MN-
518 PM CDT SAT APR 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM CDT SUNDAY
TONIGHT
NORTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS. SNOW LIKELY EARLY IN THE EVENING, THEN CHANCE OF SNOW
LATE IN THE EVENING. WAVES 4 TO 7 FEET SUBSIDING TO 1 TO 3 FEET.
WAVES OCCASIONALLY TO 10 FEET.
SUNDAY
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS
EASING TO 5 TO 10 KNOTS IN THE AFTERNOON. CHANCE OF SNOW AND
SLIGHT CHANCE OF RAIN IN THE AFTERNOON. WAVES 1 TO 2 FEET.
SUNDAY NIGHT
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS BECOMING NORTHWEST WITH GUSTS TO AROUND 25 KNOTS EARLY
IN THE MORNING. CHANCE OF RAIN AND SNOW IN THE EVENING, THEN
SLIGHT CHANCE OF RAIN AND SNOW AFTER MIDNIGHT. WAVES 1 TO 2 FEET.
MONDAY
NORTHWEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
25 KNOTS EASING TO 5 TO 10 KNOTS LATE IN THE AFTERNOON. SLIGHT
CHANCE OF SNOW IN THE MORNING. WAVES 1 TO 2 FEET.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ144-050400-
TWO HARBORS TO DULUTH MN-
518 PM CDT SAT APR 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM CDT SUNDAY
TONIGHT
NORTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO 20 KNOTS
INCREASING TO 25 KNOTS IN THE LATE EVENING AND EARLY MORNING,
THEN DECREASING TO 20 KNOTS LATE IN THE NIGHT. SNOW LIKELY EARLY
IN THE EVENING, THEN CHANCE OF SNOW LATE IN THE EVENING. WAVES
4 TO 7 FEET SUBSIDING TO 2 TO 4 FEET AFTER MIDNIGHT. WAVES
OCCASIONALLY TO 9 FEET.
SUNDAY
WEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS EARLY IN
THE MORNING. SLIGHT CHANCE OF RAIN IN THE AFTERNOON. WAVES 1 TO
2 FEET.
SUNDAY NIGHT
WEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
25 KNOTS. CHANCE OF RAIN IN THE EVENING, THEN SLIGHT CHANCE OF
RAIN AND SNOW AFTER MIDNIGHT. WAVES 1 TO 3 FEET.
MONDAY
NORTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS.
PARTLY SUNNY. WAVES 1 TO 3 FEET.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ145-050400-
DULUTH MN TO PORT WING WI-
518 PM CDT SAT APR 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM CDT SUNDAY
TONIGHT
NORTHWEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
25 KNOTS EASING TO 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS
LATE IN THE NIGHT. SNOW LIKELY EARLY IN THE EVENING, THEN CHANCE
OF SNOW LATE IN THE EVENING. WAVES 4 TO 6 FEET SUBSIDING TO 2 TO
4 FEET AFTER MIDNIGHT. WAVES OCCASIONALLY TO 8 FEET.
SUNDAY
WEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS EARLY IN
THE MORNING. SLIGHT CHANCE OF RAIN AND SNOW IN THE AFTERNOON.
WAVES 1 TO 2 FEET.
SUNDAY NIGHT
WEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
25 KNOTS. SLIGHT CHANCE OF RAIN THROUGH THE NIGHT. SLIGHT CHANCE
OF SNOW AFTER MIDNIGHT. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET
EARLY IN THE MORNING.
MONDAY
NORTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS
EARLY IN THE MORNING. SLIGHT CHANCE OF SNOW IN THE MORNING. WAVES
2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET IN THE AFTERNOON. A SMALL
CRAFT ADVISORY MAY BE NEEDED.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ146-050400-
PORT WING TO SAND ISLAND WI-
518 PM CDT SAT APR 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM CDT SUNDAY
TONIGHT
NORTHWEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
25 KNOTS EASING TO 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS
LATE IN THE NIGHT. SNOW LIKELY EARLY IN THE EVENING, THEN CHANCE
OF SNOW LATE IN THE EVENING. SLIGHT CHANCE OF SNOW AFTER
MIDNIGHT. WAVES 4 TO 7 FEET SUBSIDING TO 2 TO 4 FEET AFTER
MIDNIGHT. WAVES OCCASIONALLY TO 9 FEET.
SUNDAY
WEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS EARLY IN
THE MORNING THEN 20 KNOTS EARLY IN THE AFTERNOON. SLIGHT CHANCE
OF RAIN AND SNOW IN THE AFTERNOON. WAVES 1 TO 3 FEET.
SUNDAY NIGHT
WEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
25 KNOTS. CHANCE OF RAIN AND SNOW IN THE EVENING, THEN SLIGHT
CHANCE OF RAIN AND SNOW AFTER MIDNIGHT. WAVES 1 TO 2 FEET
BUILDING TO 2 TO 4 FEET EARLY IN THE MORNING.
MONDAY
NORTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS.
SLIGHT CHANCE OF SNOW THROUGH THE DAY. WAVES 2 TO 4 FEET
SUBSIDING TO 1 TO 3 FEET IN THE AFTERNOON. A SMALL CRAFT ADVISORY
MAY BE NEEDED.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ147-050400-
SAND ISLAND TO BAYFIELD WI-
518 PM CDT SAT APR 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM CDT SUNDAY
TONIGHT
NORTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS.
SNOW EARLY IN THE EVENING, THEN SNOW LIKELY LATE IN THE EVENING.
CHANCE OF SNOW AFTER MIDNIGHT. WAVES 4 TO 7 FEET SUBSIDING TO
3 TO 5 FEET AFTER MIDNIGHT. WAVES OCCASIONALLY TO 9 FEET.
SUNDAY
WEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS EARLY IN
THE MORNING THEN 20 KNOTS EARLY IN THE AFTERNOON. SLIGHT CHANCE
OF RAIN AND SNOW IN THE AFTERNOON. WAVES 1 TO 3 FEET SUBSIDING TO
1 TO 2 FEET IN THE LATE MORNING AND AFTERNOON.
SUNDAY NIGHT
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS BECOMING NORTHWEST 15 TO 20 KNOTS WITH GUSTS TO AROUND
25 KNOTS EARLY IN THE MORNING. CHANCE OF RAIN IN THE EVENING.
CHANCE OF SNOW THROUGH THE NIGHT. WAVES 1 TO 2 FEET BUILDING TO
1 TO 3 FEET EARLY IN THE MORNING.
MONDAY
NORTHWEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
25 KNOTS EASING TO 10 KNOTS LATE IN THE AFTERNOON. CHANCE OF SNOW
THROUGH THE DAY. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET LATE
IN THE AFTERNOON. A SMALL CRAFT ADVISORY MAY BE NEEDED.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ150-050400-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
518 PM CDT SAT APR 4 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING
TONIGHT
NORTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS.
SNOW EARLY IN THE EVENING, THEN CHANCE OF SNOW IN THE LATE
EVENING AND EARLY MORNING. WAVES 5 TO 8 FEET SUBSIDING TO 4 TO
6 FEET AFTER MIDNIGHT. WAVES OCCASIONALLY TO 11 FEET.
SUNDAY
WEST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS
DECREASING TO 20 KNOTS IN THE LATE MORNING AND AFTERNOON. SLIGHT
CHANCE OF RAIN AND SNOW IN THE AFTERNOON. WAVES 3 TO 5 FEET
SUBSIDING TO 1 TO 3 FEET IN THE AFTERNOON. A SMALL CRAFT ADVISORY
MAY BE NEEDED.
SUNDAY NIGHT
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS BECOMING NORTHWEST 15 TO 20 KNOTS WITH GUSTS TO AROUND
25 KNOTS EARLY IN THE MORNING. CHANCE OF RAIN AND SNOW. WAVES
1 TO 2 FEET BUILDING TO 1 TO 3 FEET EARLY IN THE MORNING.
MONDAY
NORTH WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS IN THE
MORNING. CHANCE OF SNOW THROUGH THE DAY. WAVES 3 TO 5 FEET. WAVES
OCCASIONALLY TO 7 FEET. A SMALL CRAFT ADVISORY MAY BE NEEDED.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ148-050400-
OAK POINT TO SAXON HARBOR WI-
518 PM CDT SAT APR 4 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING
TONIGHT
NORTHWEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
25 KNOTS. SNOW AND SLIGHT CHANCE OF RAIN EARLY IN THE EVENING,
THEN SNOW LIKELY LATE IN THE EVENING. CHANCE OF SNOW AFTER
MIDNIGHT. WAVES 4 TO 6 FEET. WAVES OCCASIONALLY TO 7 FEET.
SUNDAY
WEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS EARLY IN
THE MORNING. SLIGHT CHANCE OF RAIN AND SNOW IN THE AFTERNOON.
WAVES 1 TO 3 FEET SUBSIDING TO 1 TO 2 FEET IN THE LATE MORNING
AND AFTERNOON.
SUNDAY NIGHT
WEST WIND 15 TO 20 KNOTS. CHANCE OF RAIN AND
SNOW. WAVES 1 TO 3 FEET.
MONDAY
NORTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS IN
THE MORNING. CHANCE OF SNOW IN THE MORNING, THEN SLIGHT CHANCE OF
SNOW IN THE AFTERNOON. WAVES 3 TO 5 FEET. A SMALL CRAFT ADVISORY
MAY BE NEEDED.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
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