089
FZUS53 KDLH 132200
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
500 PM CDT THU AUG 13 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.
LSZ140-140400-
GRAND PORTAGE TO GRAND MARAIS MN-
500 PM CDT THU AUG 13 2026
TONIGHT
WEST WIND 5 KNOTS BECOMING NORTHEAST AFTER MIDNIGHT.
MOSTLY CLOUDY EARLY IN THE EVENING THEN BECOMING PARTLY CLOUDY.
WAVES 1 FOOT OR LESS.
FRIDAY
NORTHEAST WIND 5 TO 10 KNOTS BECOMING EAST IN THE
AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
FRIDAY NIGHT
NORTHEAST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY.
WAVES 1 TO 2 FEET.
SATURDAY
NORTHEAST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN
THE LATE MORNING AND AFTERNOON. CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. WAVES 1 TO 2 FEET.
LSZ141-140400-
GRAND MARAIS TO TACONITE HARBOR MN-
500 PM CDT THU AUG 13 2026
TONIGHT
SOUTH WIND 5 KNOTS BECOMING NORTH IN THE LATE EVENING
AND EARLY MORNING, THEN BECOMING NORTHEAST LATE IN THE NIGHT.
MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY CLOUDY. WAVES
1 FOOT OR LESS.
FRIDAY
NORTHEAST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS LATE
IN THE AFTERNOON. MOSTLY SUNNY. WAVES 1 TO 2 FEET.
FRIDAY NIGHT
NORTHEAST WIND 5 TO 10 KNOTS. GUSTS UP TO
20 KNOTS EARLY IN THE EVENING. MOSTLY CLOUDY. WAVES 1 TO 2 FEET.
SATURDAY
EAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. CHANCE OF RAIN SHOWERS IN THE AFTERNOON. WAVES 1 TO
2 FEET.
LSZ142-140400-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
500 PM CDT THU AUG 13 2026
TONIGHT
EAST WIND 5 KNOTS BECOMING NORTH IN THE LATE EVENING
AND OVERNIGHT. MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY
CLOUDY. WAVES 1 FOOT OR LESS.
FRIDAY
NORTHEAST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN
THE AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
FRIDAY NIGHT
NORTHEAST WIND 5 TO 10 KNOTS. GUSTS UP TO
20 KNOTS IN THE EVENING. MOSTLY CLOUDY. WAVES 1 TO 2 FEET.
SATURDAY
NORTHEAST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN
THE LATE MORNING AND AFTERNOON. SLIGHT CHANCE OF RAIN SHOWERS IN
THE MORNING, THEN CHANCE OF RAIN SHOWERS IN THE AFTERNOON. WAVES
1 TO 2 FEET.
LSZ143-140400-
SILVER BAY HARBOR TO TWO HARBORS MN-
500 PM CDT THU AUG 13 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH
LATE FRIDAY NIGHT...
TONIGHT
NORTHEAST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY IN THE
EVENING THEN BECOMING PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
FRIDAY
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO 30 KNOTS.
MOSTLY SUNNY. WAVES 1 TO 2 FEET BUILDING TO 1 TO 3 FEET IN THE
AFTERNOON.
FRIDAY NIGHT
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO
25 KNOTS DECREASING TO 20 KNOTS AFTER MIDNIGHT. MOSTLY CLOUDY.
WAVES 1 TO 3 FEET.
SATURDAY
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
INCREASING TO 25 KNOTS IN THE LATE MORNING AND AFTERNOON. SLIGHT
CHANCE OF RAIN SHOWERS THROUGH THE DAY. WAVES 1 TO 3 FEET.
LSZ144-140400-
TWO HARBORS TO DULUTH MN-
500 PM CDT THU AUG 13 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH
LATE FRIDAY NIGHT...
TONIGHT
NORTHEAST WIND 5 TO 10 KNOTS. PARTLY CLOUDY THEN
BECOMING MOSTLY CLOUDY LATE IN THE EVENING THEN BECOMING PARTLY
CLOUDY. WAVES 1 FOOT OR LESS.
FRIDAY
NORTHEAST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
30 KNOTS. MOSTLY SUNNY. WAVES 1 TO 3 FEET BUILDING TO 3 TO 5 FEET
IN THE AFTERNOON.
FRIDAY NIGHT
NORTHEAST WIND 15 TO 20 KNOTS WITH GUSTS TO
AROUND 30 KNOTS EASING TO 5 TO 10 KNOTS WITH GUSTS TO AROUND
20 KNOTS EARLY IN THE MORNING. SLIGHT CHANCE OF RAIN SHOWERS
AFTER MIDNIGHT. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 2 FEET EARLY
IN THE MORNING.
SATURDAY
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
INCREASING TO 25 KNOTS IN THE LATE MORNING AND AFTERNOON. CHANCE
OF RAIN SHOWERS THROUGH THE DAY. WAVES 1 TO 3 FEET.
LSZ145-140400-
DULUTH MN TO PORT WING WI-
500 PM CDT THU AUG 13 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH
LATE FRIDAY NIGHT...
TONIGHT
NORTHEAST WIND 5 TO 10 KNOTS. PATCHY DENSE FOG LATE IN
THE NIGHT. WAVES 1 FOOT OR LESS.
FRIDAY
NORTHEAST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
30 KNOTS. PATCHY DENSE FOG IN THE MORNING. WAVES 1 TO 3 FEET
BUILDING TO 3 TO 5 FEET IN THE AFTERNOON.
FRIDAY NIGHT
NORTHEAST WIND 15 TO 20 KNOTS WITH GUSTS TO
AROUND 25 KNOTS EASING TO 5 TO 10 KNOTS EARLY IN THE MORNING.
SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. WAVES 2 TO 4 FEET
SUBSIDING TO 1 TO 2 FEET EARLY IN THE MORNING.
SATURDAY
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
IN THE LATE MORNING AND AFTERNOON. SLIGHT CHANCE OF RAIN SHOWERS
THROUGH THE DAY. WAVES 1 TO 3 FEET.
LSZ146-140400-
PORT WING TO SAND ISLAND WI-
500 PM CDT THU AUG 13 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH
LATE FRIDAY NIGHT...
TONIGHT
EAST WIND 5 TO 10 KNOTS. PARTLY CLOUDY THEN BECOMING
MOSTLY CLOUDY LATE IN THE EVENING THEN BECOMING PARTLY CLOUDY.
WAVES 1 FOOT OR LESS.
FRIDAY
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS.
MOSTLY SUNNY. WAVES 1 TO 2 FEET BUILDING TO 1 TO 3 FEET IN THE
AFTERNOON.
FRIDAY NIGHT
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO
25 KNOTS. MOSTLY CLOUDY. WAVES 1 TO 3 FEET.
SATURDAY
NORTHEAST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN
THE LATE MORNING AND AFTERNOON. SLIGHT CHANCE OF SHOWERS THROUGH
THE DAY. WAVES 1 TO 2 FEET.
LSZ147-140400-
SAND ISLAND TO BAYFIELD WI-
500 PM CDT THU AUG 13 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH
FRIDAY EVENING...
TONIGHT
EAST WIND 5 KNOTS BECOMING NORTHEAST AFTER MIDNIGHT.
PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
FRIDAY
NORTHEAST WIND 5 TO 10 KNOTS. GUSTS UP TO 25 KNOTS.
PATCHY DENSE FOG IN THE MORNING. WAVES 1 TO 2 FEET.
FRIDAY NIGHT
EAST WIND 5 TO 10 KNOTS. GUSTS UP TO 25 KNOTS.
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY CLOUDY. WAVES
1 TO 2 FEET.
SATURDAY
EAST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS EARLY
IN THE AFTERNOON. SLIGHT CHANCE OF SHOWERS. WAVES 1 FOOT OR LESS.
LSZ150-140400-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
500 PM CDT THU AUG 13 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH
FRIDAY EVENING...
TONIGHT
EAST WIND 5 KNOTS. PARTLY CLOUDY. WAVES 1 FOOT OR
LESS.
FRIDAY
NORTHEAST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
30 KNOTS. PATCHY DENSE FOG IN THE MORNING. WAVES 1 TO 3 FEET
BUILDING TO 2 TO 4 FEET LATE IN THE AFTERNOON.
FRIDAY NIGHT
EAST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
30 KNOTS EASING TO 5 TO 10 KNOTS AFTER MIDNIGHT. MOSTLY CLOUDY.
WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET IN THE LATE EVENING
AND OVERNIGHT.
SATURDAY
EAST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN THE
AFTERNOON. SLIGHT CHANCE OF RAIN SHOWERS IN THE AFTERNOON. WAVES
1 TO 2 FEET.
LSZ121-140400-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
500 PM CDT THU AUG 13 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH
FRIDAY EVENING...
TONIGHT
NORTHEAST WIND 5 KNOTS. PARTLY CLOUDY THEN BECOMING
MOSTLY CLOUDY LATE IN THE EVENING THEN BECOMING PARTLY CLOUDY.
WAVES 1 FOOT OR LESS.
FRIDAY
NORTHEAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS. PATCHY DENSE FOG IN THE MORNING. WAVES 1 TO 2 FEET.
FRIDAY NIGHT
NORTHEAST WIND 10 TO 15 KNOTS WITH GUSTS TO
AROUND 25 KNOTS BECOMING EAST 5 KNOTS AFTER MIDNIGHT. PARTLY
CLOUDY IN THE EVENING THEN BECOMING MOSTLY CLOUDY. WAVES 1 TO
3 FEET.
SATURDAY
EAST WIND 5 KNOTS. SLIGHT CHANCE OF SHOWERS THROUGH
THE DAY. WAVES 1 FOOT OR LESS.
LSZ148-140400-
OAK POINT TO SAXON HARBOR WI-
500 PM CDT THU AUG 13 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH
FRIDAY EVENING...
TONIGHT
NORTHEAST WIND 5 KNOTS. PATCHY FOG AFTER MIDNIGHT.
WAVES 1 FOOT OR LESS.
FRIDAY
NORTHEAST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
30 KNOTS. AREAS OF DENSE FOG IN THE MORNING. WAVES 1 TO 3 FEET
BUILDING TO 2 TO 4 FEET LATE IN THE AFTERNOON.
FRIDAY NIGHT
NORTHEAST WIND 15 TO 20 KNOTS WITH GUSTS TO
AROUND 30 KNOTS BECOMING EAST 5 TO 10 KNOTS WITH GUSTS TO AROUND
20 KNOTS IN THE LATE EVENING AND OVERNIGHT. PARTLY CLOUDY IN THE
EVENING THEN BECOMING MOSTLY CLOUDY. WAVES 2 TO 4 FEET SUBSIDING
TO 1 TO 3 FEET IN THE LATE EVENING AND OVERNIGHT.
SATURDAY
EAST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF SHOWERS IN
THE MORNING. WAVES 1 FOOT OR LESS.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
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