642
FZUS53 KDLH 121348
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
848 AM CDT WED AUG 12 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.
LSZ140-122200-
GRAND PORTAGE TO GRAND MARAIS MN-
848 AM CDT WED AUG 12 2026
REST OF TODAY
NORTHWEST WIND 5 KNOTS BECOMING SOUTHWEST IN THE
LATE MORNING AND AFTERNOON. SLIGHT CHANCE OF RAIN SHOWERS LATE.
WAVES 1 FOOT OR LESS.
TONIGHT
SOUTH WIND 5 KNOTS BECOMING NORTHWEST IN THE LATE
EVENING AND EARLY MORNING, THEN BECOMING NORTH EARLY IN THE
MORNING. MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
THURSDAY
NORTH WIND 5 KNOTS BECOMING SOUTH IN THE AFTERNOON.
MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
THURSDAY NIGHT
SOUTHWEST 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.
LSZ141-122200-
GRAND MARAIS TO TACONITE HARBOR MN-
848 AM CDT WED AUG 12 2026
REST OF TODAY
NORTHEAST WIND 5 KNOTS BECOMING SOUTHWEST IN THE
LATE MORNING AND AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHEAST WIND 5 KNOTS BECOMING NORTH IN THE LATE
EVENING AND OVERNIGHT. SLIGHT CHANCE OF RAIN SHOWERS AFTER
MIDNIGHT. WAVES 1 FOOT OR LESS.
THURSDAY
NORTH WIND 5 KNOTS BECOMING SOUTHEAST IN THE
AFTERNOON. PARTLY SUNNY. WAVES 1 FOOT OR LESS.
THURSDAY NIGHT
EAST WIND 5 KNOTS BECOMING NORTHEAST IN THE
LATE EVENING AND OVERNIGHT. MOSTLY CLOUDY IN THE EVENING THEN
BECOMING PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ142-122200-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
848 AM CDT WED AUG 12 2026
REST OF TODAY
SOUTHEAST WIND 5 KNOTS BECOMING SOUTH IN THE
AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTH IN THE LATE
EVENING AND OVERNIGHT. SLIGHT CHANCE OF RAIN SHOWERS AFTER
MIDNIGHT. WAVES 1 FOOT OR LESS.
THURSDAY
NORTH WIND 5 KNOTS BECOMING EAST IN THE AFTERNOON.
PARTLY SUNNY. WAVES 1 FOOT OR LESS.
THURSDAY NIGHT
EAST WIND 5 KNOTS BECOMING NORTHEAST IN THE
LATE EVENING AND OVERNIGHT. PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
LSZ143-122200-
SILVER BAY HARBOR TO TWO HARBORS MN-
848 AM CDT WED AUG 12 2026
REST OF TODAY
SOUTH WIND 5 KNOTS. MOSTLY SUNNY. WAVES 1 FOOT
OR LESS.
TONIGHT
NORTHEAST WIND 5 KNOTS BECOMING NORTH IN THE LATE
EVENING AND OVERNIGHT. MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
THURSDAY
NORTHEAST WIND 5 KNOTS BECOMING EAST IN THE
AFTERNOON. PARTLY SUNNY. WAVES 1 FOOT OR LESS.
THURSDAY NIGHT
NORTHEAST WIND 5 TO 10 KNOTS. PARTLY CLOUDY.
WAVES 1 FOOT OR LESS.
LSZ144-122200-
TWO HARBORS TO DULUTH MN-
848 AM CDT WED AUG 12 2026
REST OF TODAY
SOUTHEAST WIND 5 KNOTS. MOSTLY SUNNY. WAVES
1 FOOT OR LESS.
TONIGHT
NORTHEAST WIND 5 KNOTS. MOSTLY CLOUDY. WAVES 1 FOOT OR
LESS.
THURSDAY
NORTHEAST WIND 5 KNOTS. PARTLY SUNNY. WAVES 1 FOOT OR
LESS.
THURSDAY NIGHT
NORTHEAST WIND 5 TO 10 KNOTS. PARTLY CLOUDY.
WAVES 1 FOOT OR LESS.
LSZ145-122200-
DULUTH MN TO PORT WING WI-
848 AM CDT WED AUG 12 2026
REST OF TODAY
SOUTH WIND 5 KNOTS BECOMING EAST IN THE
AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
TONIGHT
NORTHEAST WIND 5 KNOTS. MOSTLY CLOUDY. WAVES 1 FOOT OR
LESS.
THURSDAY
NORTHEAST WIND 5 TO 10 KNOTS. PARTLY SUNNY. WAVES
1 FOOT OR LESS.
THURSDAY NIGHT
NORTHEAST WIND 5 TO 10 KNOTS. PARTLY CLOUDY.
WAVES 1 FOOT OR LESS.
LSZ146-122200-
PORT WING TO SAND ISLAND WI-
848 AM CDT WED AUG 12 2026
REST OF TODAY
VARIABLE WINDS 10 KNOTS OR LESS BECOMING
SOUTHWEST 5 KNOTS EARLY IN THE AFTERNOON, THEN BECOMING VARIABLE
10 KNOTS OR LESS LATE. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
TONIGHT
EAST WIND 5 KNOTS BECOMING NORTHEAST IN THE LATE
EVENING AND OVERNIGHT. MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
THURSDAY
NORTHEAST WIND 5 KNOTS. PARTLY SUNNY. WAVES 1 FOOT OR
LESS.
THURSDAY NIGHT
NORTHEAST WIND 5 KNOTS. PARTLY CLOUDY. WAVES
1 FOOT OR LESS.
LSZ147-122200-
SAND ISLAND TO BAYFIELD WI-
848 AM CDT WED AUG 12 2026
REST OF TODAY
VARIABLE WINDS 10 KNOTS OR LESS BECOMING EAST
5 KNOTS EARLY IN THE AFTERNOON, THEN BECOMING SOUTHEAST LATE.
MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHEAST WIND 5 KNOTS BECOMING NORTH AFTER MIDNIGHT.
MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
THURSDAY
NORTHEAST WIND 5 KNOTS. PARTLY SUNNY. WAVES 1 FOOT OR
LESS.
THURSDAY NIGHT
NORTHEAST WIND 5 KNOTS. PARTLY CLOUDY. WAVES
1 FOOT OR LESS.
LSZ150-122200-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
848 AM CDT WED AUG 12 2026
REST OF TODAY
NORTHEAST WIND 5 KNOTS BECOMING NORTHWEST LATE
IN THE MORNING, THEN BECOMING SOUTHWEST EARLY IN THE AFTERNOON
BECOMING SOUTHEAST LATE. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
TONIGHT
SOUTHEAST WIND 5 KNOTS BECOMING NORTH AFTER MIDNIGHT.
SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
THURSDAY
NORTHEAST WIND 5 KNOTS. PARTLY SUNNY. WAVES 1 FOOT OR
LESS.
THURSDAY NIGHT
NORTHEAST WIND 5 KNOTS. PARTLY CLOUDY. WAVES
1 FOOT OR LESS.
LSZ121-122200-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
848 AM CDT WED AUG 12 2026
REST OF TODAY
VARIABLE WINDS 10 KNOTS OR LESS BECOMING
NORTHEAST 5 KNOTS IN THE AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR
LESS.
TONIGHT
EAST WIND 5 KNOTS EARLY IN THE EVENING BECOMING
VARIABLE 10 KNOTS OR LESS, THEN BECOMING NORTH 5 KNOTS AFTER
MIDNIGHT. MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
THURSDAY
NORTHEAST WIND 5 TO 10 KNOTS. PARTLY SUNNY. WAVES
1 FOOT OR LESS.
THURSDAY NIGHT
NORTHEAST WIND 5 KNOTS. PARTLY CLOUDY. WAVES
1 FOOT OR LESS.
LSZ148-122200-
OAK POINT TO SAXON HARBOR WI-
848 AM CDT WED AUG 12 2026
REST OF TODAY
VARIABLE WINDS 10 KNOTS OR LESS BECOMING
NORTHEAST 5 KNOTS IN THE AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR
LESS.
TONIGHT
EAST WIND 5 KNOTS BECOMING NORTH AFTER MIDNIGHT.
MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
THURSDAY
NORTHEAST WIND 5 KNOTS. PARTLY SUNNY. WAVES 1 FOOT OR
LESS.
THURSDAY NIGHT
NORTHEAST WIND 5 KNOTS. PARTLY CLOUDY. WAVES
1 FOOT OR LESS.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page