149
FZUS53 KDLH 302318
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
617 PM CDT SUN AUG 30 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.
LSZ140-311000-
GRAND PORTAGE TO GRAND MARAIS MN-
617 PM CDT SUN AUG 30 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING
REST OF TONIGHT
NORTHEAST WIND 15 TO 20 KNOTS. GUSTS UP TO
30 KNOTS DECREASING TO 20 KNOTS. PATCHY FOG UNTIL EARLY MORNING.
AREAS OF DENSE FOG TOWARD DAYBREAK. SLIGHT CHANCE OF RAIN SHOWERS
AND DRIZZLE IN THE EVENING, THEN RAIN SHOWERS WITH POSSIBLE
DRIZZLE AND THUNDERSTORMS AFTER MIDNIGHT. WAVES 1 TO 3 FEET.
MONDAY
NORTHEAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS EASING TO 5 KNOTS EARLY IN THE AFTERNOON, THEN BECOMING
SOUTHEAST LATE IN THE AFTERNOON. CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE MORNING. PATCHY FOG THROUGH
THE DAY. WAVES 1 TO 3 FEET.
MONDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. PATCHY FOG IN THE
EVENING. AREAS OF DENSE FOG AFTER MIDNIGHT. WAVES 1 TO 2 FEET.
TUESDAY
SOUTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO 20 KNOTS
INCREASING TO 25 KNOTS LATE IN THE MORNING, THEN INCREASING TO
30 KNOTS EARLY IN THE AFTERNOON DECREASING TO 25 KNOTS LATE IN
THE AFTERNOON. MOSTLY SUNNY. WAVES 1 TO 3 FEET BUILDING TO 2 TO
4 FEET IN THE AFTERNOON.
LSZ141-311000-
GRAND MARAIS TO TACONITE HARBOR MN-
617 PM CDT SUN AUG 30 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING
REST OF TONIGHT
EAST WIND 15 TO 20 KNOTS. GUSTS UP TO 30 KNOTS
DECREASING TO 25 KNOTS TOWARD DAYBREAK. SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS IN THE EVENING, THEN RAIN SHOWERS AND CHANCE OF
THUNDERSTORMS AFTER MIDNIGHT. PATCHY FOG LATE IN THE EVENING.
AREAS OF DENSE FOG AFTER MIDNIGHT. WAVES 2 TO 4 FEET.
MONDAY
NORTHEAST WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND
20 KNOTS BECOMING SOUTHEAST EARLY IN THE AFTERNOON, THEN BECOMING
SOUTHWEST LATE IN THE AFTERNOON. PATCHY FOG IN THE MORNING.
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE MORNING. WAVES 1 TO
3 FEET SUBSIDING TO 1 TO 2 FEET IN THE LATE MORNING AND
AFTERNOON.
MONDAY NIGHT
WEST WIND 5 KNOTS. PATCHY DENSE FOG AFTER
MIDNIGHT. WAVES 1 TO 2 FEET.
TUESDAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS IN
THE LATE MORNING AND AFTERNOON. MOSTLY SUNNY. WAVES 1 TO 2 FEET.
LSZ142-311000-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
617 PM CDT SUN AUG 30 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING
REST OF TONIGHT
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO
30 KNOTS DECREASING TO 20 KNOTS. CHANCE OF RAIN SHOWERS IN THE
EVENING. CHANCE OF THUNDERSTORMS THROUGH THE NIGHT. RAIN SHOWERS
AFTER MIDNIGHT. PATCHY FOG LATE IN THE EVENING. AREAS OF DENSE
FOG AFTER MIDNIGHT, THEN PATCHY FOG TOWARD DAYBREAK. WAVES 2 TO
4 FEET.
MONDAY
NORTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST IN THE
AFTERNOON. PATCHY FOG IN THE MORNING. SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS IN THE MORNING. WAVES 1 TO 3 FEET SUBSIDING TO
1 TO 2 FEET IN THE LATE MORNING AND AFTERNOON.
MONDAY NIGHT
SOUTHWEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES
1 FOOT OR LESS.
TUESDAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
LATE IN THE MORNING INCREASING TO 25 KNOTS, THEN DECREASING TO
20 KNOTS LATE IN THE AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR
LESS.
LSZ143-311000-
SILVER BAY HARBOR TO TWO HARBORS MN-
617 PM CDT SUN AUG 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM CDT MONDAY
REST OF TONIGHT
NORTHEAST WIND 15 TO 20 KNOTS. GUSTS UP TO
30 KNOTS DECREASING TO 20 KNOTS. RAIN SHOWERS LIKELY AND CHANCE
OF THUNDERSTORMS THROUGH THE NIGHT. PATCHY FOG IN THE LATE
EVENING AND OVERNIGHT. WAVES 2 TO 4 FEET.
MONDAY
NORTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST IN THE
AFTERNOON. PATCHY FOG IN THE MORNING. WAVES 1 TO 3 FEET SUBSIDING
TO 1 TO 2 FEET IN THE LATE MORNING AND AFTERNOON.
MONDAY NIGHT
WEST WIND 5 TO 10 KNOTS. AREAS OF DENSE FOG AFTER
MIDNIGHT. WAVES 1 FOOT OR LESS.
TUESDAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN
THE LATE MORNING AND AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR
LESS.
LSZ144-311000-
TWO HARBORS TO DULUTH MN-
617 PM CDT SUN AUG 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM CDT MONDAY
REST OF TONIGHT
NORTHEAST WIND 15 TO 20 KNOTS. GUSTS UP TO
30 KNOTS DECREASING TO 20 KNOTS. PATCHY FOG THROUGH THE NIGHT.
CHANCE OF SHOWERS AND THUNDERSTORMS UNTIL EARLY MORNING. SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS TOWARD DAYBREAK. WAVES 3 TO
5 FEET.
MONDAY
NORTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTHEAST LATE IN
THE MORNING, THEN BECOMING SOUTHWEST IN THE AFTERNOON. PATCHY FOG
IN THE MORNING. WAVES 1 TO 3 FEET.
MONDAY NIGHT
WEST WIND 5 TO 10 KNOTS. PATCHY DENSE FOG AFTER
MIDNIGHT. WAVES 1 FOOT OR LESS.
TUESDAY
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN
THE LATE MORNING AND AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
LSZ145-311000-
DULUTH MN TO PORT WING WI-
617 PM CDT SUN AUG 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM CDT MONDAY
REST OF TONIGHT
NORTHEAST WIND 15 TO 20 KNOTS. GUSTS UP TO
25 KNOTS DECREASING TO 20 KNOTS TOWARD DAYBREAK. PATCHY FOG
THROUGH THE NIGHT. CHANCE OF SHOWERS AND THUNDERSTORMS UNTIL
EARLY MORNING. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS TOWARD
DAYBREAK. WAVES 3 TO 5 FEET.
MONDAY
NORTHEAST WIND 5 TO 10 KNOTS BECOMING NORTH LATE IN THE
MORNING, THEN BECOMING WEST IN THE AFTERNOON. PATCHY FOG IN THE
MORNING. WAVES 1 TO 3 FEET.
MONDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES
1 FOOT OR LESS.
TUESDAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS IN
THE LATE MORNING AND AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
LSZ146-311000-
PORT WING TO SAND ISLAND WI-
617 PM CDT SUN AUG 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM CDT MONDAY
REST OF TONIGHT
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO
25 KNOTS. RAIN SHOWERS LIKELY AND CHANCE OF THUNDERSTORMS THROUGH
THE NIGHT. PATCHY FOG AFTER MIDNIGHT. WAVES 2 TO 4 FEET SUBSIDING
TO 1 TO 3 FEET TOWARD DAYBREAK.
MONDAY
NORTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST WITH
GUSTS TO AROUND 20 KNOTS IN THE AFTERNOON. PATCHY FOG IN THE
MORNING. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
MORNING. WAVES 1 TO 2 FEET.
MONDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. PATCHY FOG AFTER
MIDNIGHT. WAVES 1 FOOT OR LESS.
TUESDAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS.
SUNNY. WAVES 1 TO 2 FEET.
LSZ147-311000-
SAND ISLAND TO BAYFIELD WI-
617 PM CDT SUN AUG 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM CDT MONDAY
REST OF TONIGHT
EAST WIND 10 TO 15 KNOTS. GUSTS UP TO
30 KNOTS. CHANCE OF SHOWERS IN THE EVENING. CHANCE OF
THUNDERSTORMS THROUGH THE NIGHT. SHOWERS LIKELY AFTER MIDNIGHT.
PATCHY FOG AFTER MIDNIGHT. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO
3 FEET TOWARD DAYBREAK.
MONDAY
EAST WIND 5 KNOTS BECOMING WEST WITH GUSTS TO AROUND
20 KNOTS IN THE LATE MORNING AND AFTERNOON. PATCHY FOG IN THE
MORNING. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
MORNING. WAVES 1 TO 2 FEET.
MONDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES
1 FOOT OR LESS.
TUESDAY
SOUTHWEST WIND 10 TO 15 KNOTS BECOMING WEST LATE IN
THE AFTERNOON. GUSTS UP TO 25 KNOTS. SUNNY. WAVES 1 FOOT OR LESS.
LSZ150-311000-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
617 PM CDT SUN AUG 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM CDT MONDAY
REST OF TONIGHT
EAST WIND 10 TO 15 KNOTS. GUSTS UP TO 30 KNOTS
DECREASING TO 20 KNOTS. CHANCE OF SHOWERS IN THE EVENING. CHANCE
OF THUNDERSTORMS THROUGH THE NIGHT. SHOWERS LIKELY AFTER
MIDNIGHT. PATCHY FOG AFTER MIDNIGHT. WAVES 2 TO 4 FEET.
MONDAY
EAST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST LATE IN THE
MORNING, THEN BECOMING WEST WITH GUSTS TO AROUND 20 KNOTS IN THE
AFTERNOON. PATCHY FOG IN THE MORNING. SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS IN THE MORNING. WAVES 1 TO 3 FEET.
MONDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. PATCHY FOG. WAVES
1 FOOT OR LESS.
TUESDAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS.
SUNNY. WAVES 1 FOOT OR LESS.
LSZ121-311000-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
617 PM CDT SUN AUG 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM CDT THIS EVENING
REST OF TONIGHT
NORTHEAST WIND 5 TO 10 KNOTS. GUSTS UP TO
20 KNOTS EARLY IN THE EVENING. CHANCE OF SHOWERS AND
THUNDERSTORMS THROUGH THE NIGHT. PATCHY FOG AFTER MIDNIGHT. WAVES
1 TO 2 FEET.
MONDAY
EAST WIND 5 KNOTS BECOMING SOUTHWEST LATE IN THE
MORNING, THEN BECOMING NORTHWEST IN THE AFTERNOON. PATCHY FOG IN
THE MORNING. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
MORNING. WAVES 1 FOOT OR LESS.
MONDAY NIGHT
NORTHWEST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST
IN THE LATE EVENING AND OVERNIGHT. MOSTLY CLEAR. WAVES 1 FOOT OR
LESS.
TUESDAY
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. SUNNY. WAVES 1 FOOT OR LESS.
LSZ148-311000-
OAK POINT TO SAXON HARBOR WI-
617 PM CDT SUN AUG 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM CDT THIS EVENING
REST OF TONIGHT
EAST WIND 5 TO 10 KNOTS. GUSTS UP TO 25 KNOTS.
SLIGHT CHANCE OF THUNDERSTORMS EARLY IN THE EVENING. CHANCE OF
SHOWERS THROUGH THE NIGHT. CHANCE OF THUNDERSTORMS IN THE LATE
EVENING AND OVERNIGHT. PATCHY FOG AFTER MIDNIGHT. WAVES 2 TO
4 FEET SUBSIDING TO 1 TO 3 FEET IN THE LATE EVENING AND
OVERNIGHT.
MONDAY
SOUTHEAST WIND 5 KNOTS BECOMING WEST LATE IN THE
MORNING, THEN BECOMING NORTHWEST IN THE AFTERNOON. PATCHY FOG IN
THE MORNING. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
MORNING. WAVES 1 TO 2 FEET.
MONDAY NIGHT
NORTHWEST WIND 5 KNOTS BECOMING SOUTHWEST IN THE
LATE EVENING AND OVERNIGHT. PATCHY FOG AFTER MIDNIGHT. WAVES
1 FOOT OR LESS.
TUESDAY
SOUTHWEST WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND
20 KNOTS BECOMING WEST WITH GUSTS TO AROUND 20 KNOTS LATE IN THE
AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
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