116
FZUS53 KDLH 131733
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
1232 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.
LSZ140-132200-
GRAND PORTAGE TO GRAND MARAIS MN-
1232 PM CDT THU AUG 13 2026
REST OF TODAY
SOUTHWEST WIND 5 KNOTS. MOSTLY SUNNY. WAVES
1 FOOT OR LESS.
TONIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTHEAST AFTER
MIDNIGHT. PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
FRIDAY
EAST WIND 5 TO 10 KNOTS. MOSTLY SUNNY. WAVES 1 FOOT OR
LESS.
FRIDAY NIGHT
NORTHEAST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY.
WAVES 1 TO 2 FEET.
LSZ141-132200-
GRAND MARAIS TO TACONITE HARBOR MN-
1232 PM CDT THU AUG 13 2026
REST OF TODAY
SOUTHWEST WIND 5 KNOTS EARLY IN THE AFTERNOON
BECOMING VARIABLE 10 KNOTS OR LESS. MOSTLY SUNNY. WAVES 1 FOOT OR
LESS.
TONIGHT
VARIABLE WINDS 10 KNOTS OR LESS BECOMING NORTHEAST
5 KNOTS AFTER MIDNIGHT. MOSTLY CLOUDY IN THE EVENING THEN
BECOMING PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
FRIDAY
EAST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS LATE IN
THE AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
FRIDAY NIGHT
NORTHEAST WIND 5 TO 10 KNOTS. GUSTS UP TO
20 KNOTS EARLY IN THE EVENING. CHANCE OF RAIN SHOWERS AFTER
MIDNIGHT. WAVES 1 FOOT OR LESS.
LSZ142-132200-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
1232 PM CDT THU AUG 13 2026
REST OF TODAY
VARIABLE WINDS 10 KNOTS OR LESS. MOSTLY SUNNY.
WAVES 1 FOOT OR LESS.
TONIGHT
VARIABLE WINDS 10 KNOTS OR LESS BECOMING NORTHEAST
5 KNOTS EARLY IN THE MORNING. 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. CHANCE OF RAIN SHOWERS AFTER MIDNIGHT.
WAVES 1 FOOT OR LESS.
LSZ143-132200-
SILVER BAY HARBOR TO TWO HARBORS MN-
1232 PM CDT THU AUG 13 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH
LATE FRIDAY NIGHT...
REST OF TODAY
EAST WIND 5 KNOTS. MOSTLY SUNNY. WAVES 1 FOOT OR
LESS.
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.
FRIDAY NIGHT
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO
25 KNOTS DECREASING TO 20 KNOTS AFTER MIDNIGHT. CHANCE OF RAIN
SHOWERS AFTER MIDNIGHT. WAVES 1 TO 2 FEET.
LSZ144-132200-
TWO HARBORS TO DULUTH MN-
1232 PM CDT THU AUG 13 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH
LATE FRIDAY NIGHT...
REST OF TODAY
EAST WIND 5 TO 10 KNOTS. MOSTLY SUNNY. WAVES
1 FOOT OR LESS.
TONIGHT
NORTHEAST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY 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 2 TO 4 FEET
LATE 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. CHANCE OF RAIN SHOWERS AFTER
MIDNIGHT. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET AFTER
MIDNIGHT.
LSZ145-132200-
DULUTH MN TO PORT WING WI-
1232 PM CDT THU AUG 13 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH
LATE FRIDAY NIGHT...
REST OF TODAY
NORTHEAST WIND 5 TO 10 KNOTS. MOSTLY SUNNY.
WAVES 1 FOOT OR LESS.
TONIGHT
NORTHEAST WIND 5 TO 10 KNOTS. PATCHY DENSE FOG AFTER
MIDNIGHT. 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
NORTHEAST WIND 15 TO 20 KNOTS WITH GUSTS TO
AROUND 25 KNOTS EASING TO 5 TO 10 KNOTS EARLY IN THE MORNING.
CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. WAVES 2 TO 4 FEET
SUBSIDING TO 1 TO 3 FEET AFTER MIDNIGHT.
LSZ146-132200-
PORT WING TO SAND ISLAND WI-
1232 PM CDT THU AUG 13 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH
LATE FRIDAY NIGHT...
REST OF TODAY
NORTHEAST WIND 5 KNOTS. MOSTLY SUNNY. WAVES
1 FOOT OR LESS.
TONIGHT
NORTHEAST WIND 5 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 25 KNOTS.
MOSTLY SUNNY. WAVES 1 TO 2 FEET.
FRIDAY NIGHT
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO
25 KNOTS. CHANCE OF SHOWERS AFTER MIDNIGHT. WAVES 1 TO 2 FEET.
LSZ147-132200-
SAND ISLAND TO BAYFIELD WI-
1232 PM CDT THU AUG 13 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH
FRIDAY EVENING...
REST OF TODAY
NORTHEAST WIND 5 KNOTS. MOSTLY SUNNY. WAVES
1 FOOT OR LESS.
TONIGHT
EAST WIND 5 KNOTS EARLY IN THE EVENING BECOMING
VARIABLE 10 KNOTS OR LESS, THEN BECOMING NORTHEAST 5 KNOTS AFTER
MIDNIGHT. 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 FOOT OR LESS.
FRIDAY NIGHT
EAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
25 KNOTS EASING TO 5 KNOTS AFTER MIDNIGHT. CHANCE OF SHOWERS
AFTER MIDNIGHT. WAVES 1 TO 2 FEET.
LSZ150-132200-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
1232 PM CDT THU AUG 13 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH
FRIDAY EVENING...
REST OF TODAY
NORTHEAST WIND 5 KNOTS BECOMING EAST LATE.
MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
TONIGHT
NORTHEAST 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 2 FEET
BUILDING TO 1 TO 3 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. SLIGHT CHANCE OF
SHOWERS AFTER MIDNIGHT. WAVES 1 TO 3 FEET SUBSIDING TO 1 TO
2 FEET IN THE LATE EVENING AND OVERNIGHT.
LSZ121-132200-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
1232 PM CDT THU AUG 13 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH
FRIDAY EVENING...
REST OF TODAY
NORTHEAST WIND 5 TO 10 KNOTS. MOSTLY SUNNY.
WAVES 1 FOOT OR LESS.
TONIGHT
NORTHEAST WIND 5 KNOTS. PARTLY CLOUDY. WAVES 1 FOOT OR
LESS.
FRIDAY
NORTHEAST WIND 5 KNOTS RISING TO 10 TO 15 KNOTS WITH
GUSTS TO AROUND 25 KNOTS IN THE AFTERNOON. 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. CHANCE OF
SHOWERS AFTER MIDNIGHT. WAVES 1 TO 2 FEET.
LSZ148-132200-
OAK POINT TO SAXON HARBOR WI-
1232 PM CDT THU AUG 13 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH
FRIDAY EVENING...
REST OF TODAY
NORTHEAST WIND 5 KNOTS. MOSTLY SUNNY. WAVES
1 FOOT OR LESS.
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 FOOT OR LESS
BUILDING TO 2 TO 4 FEET IN THE AFTERNOON.
FRIDAY NIGHT
EAST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
30 KNOTS BECOMING SOUTHEAST 5 KNOTS AFTER MIDNIGHT. CHANCE OF
SHOWERS AFTER MIDNIGHT. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO
2 FEET IN THE LATE EVENING AND OVERNIGHT.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
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