808
FZUS53 KDLH 210743
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
243 AM CDT TUE APR 21 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.
LSZ140-211600-
GRAND PORTAGE TO GRAND MARAIS MN-
243 AM CDT TUE APR 21 2026
TODAY
NORTHWEST WIND 5 KNOTS BECOMING SOUTHWEST IN THE
AFTERNOON. SUNNY. WAVES 1 TO 2 FEET.
TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING NORTHWEST LATE
IN THE EVENING, THEN BECOMING NORTHEAST AFTER MIDNIGHT. MOSTLY
CLEAR. WAVES 1 FOOT OR LESS.
WEDNESDAY
NORTHEAST WIND 5 KNOTS BECOMING EAST IN THE LATE
MORNING AND AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
NORTHEAST WIND 10 TO 15 KNOTS WITH GUSTS TO
AROUND 20 KNOTS. SLIGHT CHANCE OF RAIN IN THE EVENING, THEN
CHANCE OF RAIN AFTER MIDNIGHT. WAVES 1 TO 3 FEET BUILDING TO 2 TO
4 FEET AFTER MIDNIGHT.
LSZ141-211600-
GRAND MARAIS TO TACONITE HARBOR MN-
243 AM CDT TUE APR 21 2026
TODAY
NORTHWEST WIND 5 KNOTS BECOMING SOUTHWEST IN THE
AFTERNOON. SUNNY. WAVES 1 TO 2 FEET.
TONIGHT
SOUTHEAST WIND 5 KNOTS BECOMING NORTHEAST IN THE LATE
EVENING AND OVERNIGHT. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
WEDNESDAY
EAST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 FOOT OR
LESS.
WEDNESDAY NIGHT
NORTHEAST WIND 10 TO 15 KNOTS WITH GUSTS TO
AROUND 20 KNOTS. SLIGHT CHANCE OF RAIN IN THE EVENING, THEN
CHANCE OF RAIN AFTER MIDNIGHT. WAVES 1 TO 3 FEET.
LSZ142-211600-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
243 AM CDT TUE APR 21 2026
TODAY
NORTH WIND 5 KNOTS BECOMING SOUTHWEST IN THE AFTERNOON.
SUNNY. WAVES 1 FOOT OR LESS.
TONIGHT
EAST WIND 5 KNOTS BECOMING NORTHEAST IN THE LATE
EVENING AND OVERNIGHT. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
WEDNESDAY
NORTHEAST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 FOOT OR
LESS.
WEDNESDAY NIGHT
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO
20 KNOTS AFTER MIDNIGHT. SLIGHT CHANCE OF RAIN AND THUNDERSTORMS
THROUGH THE NIGHT. WAVES 1 TO 3 FEET.
LSZ143-211600-
SILVER BAY HARBOR TO TWO HARBORS MN-
243 AM CDT TUE APR 21 2026
TODAY
NORTHWEST WIND 5 KNOTS BECOMING NORTHEAST LATE IN THE
MORNING, THEN BECOMING SOUTH IN THE AFTERNOON. SUNNY. WAVES
1 FOOT OR LESS.
TONIGHT
EAST WIND 5 KNOTS BECOMING NORTHEAST IN THE LATE
EVENING AND OVERNIGHT. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
WEDNESDAY
NORTHEAST WIND 10 TO 15 KNOTS. SUNNY. WAVES 1 FOOT
OR LESS.
WEDNESDAY NIGHT
NORTHEAST WIND 10 TO 15 KNOTS. SLIGHT CHANCE
OF RAIN AND THUNDERSTORMS. WAVES 1 TO 3 FEET.
LSZ144-211600-
TWO HARBORS TO DULUTH MN-
243 AM CDT TUE APR 21 2026
TODAY
NORTHWEST WIND 5 KNOTS BECOMING NORTHEAST LATE IN THE
MORNING, THEN BECOMING SOUTHEAST IN THE AFTERNOON. SUNNY. WAVES
1 FOOT OR LESS.
TONIGHT
NORTHEAST WIND 5 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT OR
LESS.
WEDNESDAY
EAST WIND 10 TO 15 KNOTS. SUNNY. WAVES 1 TO 2 FEET.
WEDNESDAY NIGHT
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO
20 KNOTS EARLY IN THE MORNING. SLIGHT CHANCE OF RAIN IN THE
EVENING. WAVES 1 TO 2 FEET.
LSZ145-211600-
DULUTH MN TO PORT WING WI-
243 AM CDT TUE APR 21 2026
TODAY
NORTHWEST WIND 5 KNOTS BECOMING EAST IN THE AFTERNOON.
SUNNY. WAVES 1 FOOT OR LESS.
TONIGHT
EAST WIND 5 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
WEDNESDAY
NORTHEAST WIND 10 TO 15 KNOTS. SUNNY. WAVES 1 TO
2 FEET.
WEDNESDAY NIGHT
NORTHEAST WIND 10 TO 15 KNOTS. GUSTS UP TO
20 KNOTS EARLY IN THE MORNING. SLIGHT CHANCE OF RAIN IN THE
EVENING. WAVES 1 TO 3 FEET.
LSZ146-211600-
PORT WING TO SAND ISLAND WI-
243 AM CDT TUE APR 21 2026
TODAY
WEST WIND 5 KNOTS BECOMING NORTH LATE IN THE MORNING,
THEN BECOMING SOUTHEAST IN THE AFTERNOON. SUNNY. WAVES 1 FOOT OR
LESS.
TONIGHT
EAST WIND 5 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
WEDNESDAY
NORTHEAST WIND 10 TO 15 KNOTS. SUNNY. WAVES 1 FOOT
OR LESS.
WEDNESDAY NIGHT
NORTHEAST WIND 10 TO 15 KNOTS. SLIGHT CHANCE
OF RAIN AND THUNDERSTORMS. WAVES 1 TO 2 FEET.
LSZ147-211600-
SAND ISLAND TO BAYFIELD WI-
243 AM CDT TUE APR 21 2026
TODAY
NORTHWEST WIND 5 KNOTS BECOMING SOUTHEAST LATE IN THE
AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHEAST WIND 5 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT OR
LESS.
WEDNESDAY
SOUTHEAST WIND 5 KNOTS BECOMING EAST IN THE
AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
EAST WIND 10 TO 15 KNOTS. SLIGHT CHANCE OF
RAIN. WAVES 1 TO 2 FEET.
LSZ150-211600-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
243 AM CDT TUE APR 21 2026
TODAY
NORTHWEST WIND 5 TO 10 KNOTS BECOMING SOUTH LATE IN THE
AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHEAST WIND 5 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT OR
LESS.
WEDNESDAY
SOUTHEAST WIND 5 KNOTS BECOMING NORTHEAST IN THE
AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
EAST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE MORNING. SLIGHT CHANCE OF RAIN THROUGH THE NIGHT.
WAVES 1 TO 3 FEET.
LSZ121-211600-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
243 AM CDT TUE APR 21 2026
TODAY
WEST WIND 5 KNOTS BECOMING EAST IN THE AFTERNOON. SUNNY.
WAVES 1 FOOT OR LESS.
TONIGHT
EAST WIND 5 KNOTS BECOMING SOUTH IN THE LATE EVENING
AND OVERNIGHT. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
WEDNESDAY
SOUTH WIND 5 KNOTS BECOMING EAST IN THE AFTERNOON.
SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
EAST WIND 5 TO 10 KNOTS BECOMING SOUTHEAST IN
THE LATE EVENING AND OVERNIGHT. SLIGHT CHANCE OF RAIN IN THE
EVENING. WAVES 1 FOOT OR LESS.
LSZ148-211600-
OAK POINT TO SAXON HARBOR WI-
243 AM CDT TUE APR 21 2026
TODAY
WEST WIND 5 KNOTS BECOMING EAST LATE IN THE AFTERNOON.
SUNNY. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHEAST WIND 5 KNOTS BECOMING SOUTH EARLY IN THE
MORNING. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
WEDNESDAY
SOUTH WIND 5 KNOTS BECOMING EAST IN THE AFTERNOON.
SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
EAST WIND 5 TO 10 KNOTS BECOMING SOUTHEAST
WITH GUSTS TO AROUND 20 KNOTS IN THE LATE EVENING AND OVERNIGHT.
SLIGHT CHANCE OF RAIN. WAVES 1 TO 2 FEET.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
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