809
FZUS53 KDLH 181822
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
122 PM CDT TUE AUG 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.
LSZ140-182200-
GRAND PORTAGE TO GRAND MARAIS MN-
122 PM CDT TUE AUG 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING
REST OF TODAY
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO
AROUND 20 KNOTS. MOSTLY SUNNY. WAVES 1 TO 3 FEET.
TONIGHT
WEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS
BECOMING NORTHWEST 5 TO 10 KNOTS AFTER MIDNIGHT. MOSTLY CLEAR.
WAVES 1 TO 3 FEET.
WEDNESDAY
NORTHWEST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST
10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS IN THE LATE MORNING
AND AFTERNOON. MOSTLY SUNNY. WAVES 1 TO 2 FEET.
WEDNESDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING
NORTHWEST IN THE LATE EVENING AND EARLY MORNING, THEN BECOMING
NORTH EARLY IN THE MORNING. PARTLY CLOUDY IN THE EVENING THEN
BECOMING MOSTLY CLOUDY. WAVES 1 TO 2 FEET.
LSZ141-182200-
GRAND MARAIS TO TACONITE HARBOR MN-
122 PM CDT TUE AUG 18 2026
REST OF TODAY
SOUTHWEST WIND 5 TO 10 KNOTS WITH GUSTS TO
AROUND 20 KNOTS. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
TONIGHT
WEST WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS
BECOMING NORTHWEST AFTER MIDNIGHT. MOSTLY CLEAR. WAVES 1 FOOT OR
LESS.
WEDNESDAY
NORTHWEST WIND 5 KNOTS BECOMING SOUTHWEST IN THE
LATE MORNING AND AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTH IN THE
LATE EVENING AND EARLY MORNING, THEN BECOMING VARIABLE 10 KNOTS
OR LESS EARLY IN THE MORNING. PARTLY CLOUDY. WAVES 1 FOOT OR
LESS.
LSZ142-182200-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
122 PM CDT TUE AUG 18 2026
REST OF TODAY
SOUTHWEST WIND 5 KNOTS. MOSTLY SUNNY. WAVES
1 FOOT OR LESS.
TONIGHT
NORTHWEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT OR
LESS.
WEDNESDAY
NORTHWEST WIND 5 KNOTS BECOMING SOUTHWEST IN THE
LATE MORNING AND AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
SOUTHWEST WIND 5 KNOTS EARLY IN THE EVENING
BECOMING VARIABLE 10 KNOTS OR LESS. PARTLY CLOUDY. WAVES 1 FOOT
OR LESS.
LSZ143-182200-
SILVER BAY HARBOR TO TWO HARBORS MN-
122 PM CDT TUE AUG 18 2026
REST OF TODAY
SOUTHWEST WIND 5 KNOTS. MOSTLY SUNNY. WAVES
1 FOOT OR LESS.
TONIGHT
NORTHWEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT OR
LESS.
WEDNESDAY
NORTHWEST WIND 5 KNOTS BECOMING SOUTHWEST IN THE
LATE MORNING AND AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
SOUTHWEST WIND 5 KNOTS EARLY IN THE EVENING
BECOMING VARIABLE 10 KNOTS OR LESS. PARTLY CLOUDY IN THE EVENING
THEN BECOMING MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ144-182200-
TWO HARBORS TO DULUTH MN-
122 PM CDT TUE AUG 18 2026
REST OF TODAY
WEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 FOOT OR
LESS.
TONIGHT
NORTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES
1 FOOT OR LESS.
WEDNESDAY
WEST WIND 5 KNOTS BECOMING SOUTHWEST IN THE LATE
MORNING AND AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
WEST WIND 5 KNOTS BECOMING NORTH LATE IN THE
EVENING, THEN BECOMING VARIABLE 10 KNOTS OR LESS AFTER MIDNIGHT
BECOMING NORTHEAST 5 KNOTS EARLY IN THE MORNING. PARTLY CLOUDY.
WAVES 1 FOOT OR LESS.
LSZ145-182200-
DULUTH MN TO PORT WING WI-
122 PM CDT TUE AUG 18 2026
REST OF TODAY
WEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 FOOT OR
LESS.
TONIGHT
NORTHWEST WIND 5 TO 10 KNOTS BECOMING WEST EARLY IN
THE MORNING. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
WEDNESDAY
WEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 FOOT OR
LESS.
WEDNESDAY NIGHT
WEST WIND 5 KNOTS BECOMING SOUTH LATE IN THE
EVENING, THEN BECOMING VARIABLE 10 KNOTS OR LESS AFTER MIDNIGHT
BECOMING SOUTH 5 KNOTS EARLY IN THE MORNING. MOSTLY CLEAR. WAVES
1 FOOT OR LESS.
LSZ146-182200-
PORT WING TO SAND ISLAND WI-
122 PM CDT TUE AUG 18 2026
REST OF TODAY
SOUTHWEST WIND 5 KNOTS. SUNNY. WAVES 1 FOOT OR
LESS.
TONIGHT
WEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
WEDNESDAY
SOUTHWEST WIND 5 KNOTS. SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
SOUTHWEST WIND 5 KNOTS EARLY IN THE EVENING
BECOMING VARIABLE 10 KNOTS OR LESS. PARTLY CLOUDY. WAVES 1 FOOT
OR LESS.
LSZ147-182200-
SAND ISLAND TO BAYFIELD WI-
122 PM CDT TUE AUG 18 2026
REST OF TODAY
WEST WIND 5 KNOTS. SUNNY. WAVES 1 FOOT OR LESS.
TONIGHT
WEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
WEDNESDAY
WEST WIND 5 KNOTS. SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
VARIABLE WINDS 10 KNOTS OR LESS. PARTLY
CLOUDY. WAVES 1 FOOT OR LESS.
LSZ150-182200-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
122 PM CDT TUE AUG 18 2026
REST OF TODAY
SOUTHWEST WIND 5 KNOTS. SUNNY. WAVES 1 FOOT OR
LESS.
TONIGHT
WEST WIND 5 KNOTS BECOMING NORTHWEST AFTER MIDNIGHT.
MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
WEDNESDAY
WEST WIND 5 KNOTS BECOMING SOUTHWEST LATE IN THE
AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
SOUTHWEST WIND 5 KNOTS. PARTLY CLOUDY. WAVES
1 FOOT OR LESS.
LSZ121-182200-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
122 PM CDT TUE AUG 18 2026
REST OF TODAY
NORTH WIND 5 KNOTS. SUNNY. WAVES 1 FOOT OR LESS.
TONIGHT
NORTHWEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT OR
LESS.
WEDNESDAY
WEST WIND 5 KNOTS BECOMING NORTH LATE IN THE
AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
EAST WIND 5 KNOTS EARLY IN THE EVENING
BECOMING VARIABLE 10 KNOTS OR LESS, THEN BECOMING SOUTHWEST
5 KNOTS EARLY IN THE MORNING. PARTLY CLOUDY. WAVES 1 FOOT OR
LESS.
LSZ148-182200-
OAK POINT TO SAXON HARBOR WI-
122 PM CDT TUE AUG 18 2026
REST OF TODAY
NORTHEAST WIND 5 KNOTS BECOMING EAST LATE.
SUNNY. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHWEST WIND 5 KNOTS BECOMING WEST IN THE LATE
EVENING AND OVERNIGHT. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
WEDNESDAY
WEST WIND 5 KNOTS BECOMING NORTH EARLY IN THE
AFTERNOON, THEN BECOMING EAST LATE IN THE AFTERNOON. SUNNY. WAVES
1 FOOT OR LESS.
WEDNESDAY NIGHT
SOUTHEAST WIND 5 KNOTS BECOMING SOUTH IN THE
LATE EVENING AND OVERNIGHT. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
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