974
FZUS53 KDLH 122313
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
613 PM CDT TUE MAY 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.
LSZ140-131000-
GRAND PORTAGE TO GRAND MARAIS MN-
613 PM CDT TUE MAY 12 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM CDT THIS EVENING
REST OF TONIGHT
NORTH WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND
25 KNOTS BECOMING NORTHWEST 5 TO 10 KNOTS TOWARD DAYBREAK. SLIGHT
CHANCE OF RAIN SHOWERS IN THE EVENING. WAVES 2 TO 4 FEET
SUBSIDING TO 1 TO 3 FEET AFTER MIDNIGHT.
WEDNESDAY
NORTHWEST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 TO
2 FEET.
WEDNESDAY NIGHT
NORTH WIND 5 TO 10 KNOTS. PARTLY CLOUDY. WAVES
1 FOOT OR LESS.
THURSDAY
EAST WIND 5 KNOTS RISING TO 10 TO 15 KNOTS WITH GUSTS
TO AROUND 20 KNOTS IN THE LATE MORNING AND AFTERNOON. MOSTLY
SUNNY. WAVES 1 TO 2 FEET.
LSZ141-131000-
GRAND MARAIS TO TACONITE HARBOR MN-
613 PM CDT TUE MAY 12 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM CDT THIS EVENING
REST OF TONIGHT
NORTH WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND
20 KNOTS BECOMING NORTHWEST IN THE LATE EVENING AND OVERNIGHT.
SLIGHT CHANCE OF RAIN SHOWERS IN THE EVENING. WAVES 1 TO 3 FEET.
WEDNESDAY
NORTHWEST WIND 5 KNOTS. SUNNY. WAVES 1 TO 2 FEET.
WEDNESDAY NIGHT
NORTHWEST WIND 5 KNOTS EARLY IN THE EVENING
BECOMING VARIABLE 10 KNOTS OR LESS, THEN BECOMING NORTHEAST
5 KNOTS AFTER MIDNIGHT. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
THURSDAY
EAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. MOSTLY SUNNY. WAVES 1 TO 2 FEET.
LSZ142-131000-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
613 PM CDT TUE MAY 12 2026
REST OF TONIGHT
NORTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO
20 KNOTS EARLY IN THE EVENING. SLIGHT CHANCE OF RAIN SHOWERS
UNTIL EARLY MORNING. WAVES 1 TO 2 FEET.
WEDNESDAY
NORTHWEST WIND 5 KNOTS BECOMING WEST LATE IN THE
AFTERNOON. SUNNY. WAVES 1 TO 2 FEET.
WEDNESDAY NIGHT
NORTHWEST WIND 5 KNOTS EARLY IN THE EVENING
BECOMING VARIABLE 10 KNOTS OR LESS, THEN BECOMING NORTH 5 KNOTS
AFTER MIDNIGHT. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
THURSDAY
NORTHEAST WIND 5 KNOTS BECOMING EAST IN THE LATE
MORNING AND AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
LSZ143-131000-
SILVER BAY HARBOR TO TWO HARBORS MN-
613 PM CDT TUE MAY 12 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING
REST OF TONIGHT
NORTHWEST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF
RAIN SHOWERS UNTIL EARLY MORNING. WAVES 1 TO 2 FEET.
WEDNESDAY
NORTHWEST WIND 5 KNOTS BECOMING SOUTH LATE IN THE
AFTERNOON. SUNNY. WAVES 1 TO 2 FEET.
WEDNESDAY NIGHT
NORTH WIND 5 KNOTS EARLY IN THE EVENING
BECOMING VARIABLE 10 KNOTS OR LESS, THEN BECOMING NORTH 5 KNOTS
EARLY IN THE MORNING. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
THURSDAY
NORTHEAST WIND 5 KNOTS BECOMING EAST 10 TO 15 KNOTS
WITH GUSTS TO AROUND 20 KNOTS IN THE AFTERNOON. MOSTLY SUNNY.
WAVES 1 FOOT OR LESS.
LSZ144-131000-
TWO HARBORS TO DULUTH MN-
613 PM CDT TUE MAY 12 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING
REST OF TONIGHT
NORTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO
20 KNOTS IN THE EVENING. SLIGHT CHANCE OF RAIN SHOWERS IN THE
EVENING. WAVES 1 FOOT OR LESS.
WEDNESDAY
NORTHWEST WIND 5 TO 10 KNOTS BECOMING EAST LATE IN
THE AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
NORTHEAST WIND 5 KNOTS. MOSTLY CLEAR. WAVES
1 FOOT OR LESS.
THURSDAY
EAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. MOSTLY SUNNY. WAVES 1 TO 2 FEET.
LSZ145-131000-
DULUTH MN TO PORT WING WI-
613 PM CDT TUE MAY 12 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING
REST OF TONIGHT
NORTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO
20 KNOTS EARLY IN THE EVENING. SLIGHT CHANCE OF RAIN SHOWERS IN
THE EVENING. WAVES 1 TO 2 FEET.
WEDNESDAY
NORTHWEST WIND 5 TO 10 KNOTS BECOMING EAST LATE IN
THE AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
EAST WIND 5 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT
OR LESS.
THURSDAY
EAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. MOSTLY SUNNY. WAVES 1 TO 2 FEET.
LSZ146-131000-
PORT WING TO SAND ISLAND WI-
613 PM CDT TUE MAY 12 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING
REST OF TONIGHT
NORTHWEST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF
RAIN SHOWERS UNTIL EARLY MORNING. WAVES 1 TO 2 FEET.
WEDNESDAY
NORTHWEST WIND 5 KNOTS BECOMING WEST EARLY IN THE
AFTERNOON, THEN BECOMING SOUTHEAST LATE IN THE AFTERNOON. SUNNY.
WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
NORTHEAST WIND 5 KNOTS BECOMING EAST AFTER
MIDNIGHT. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
THURSDAY
VARIABLE WINDS 10 KNOTS OR LESS BECOMING EAST 5 TO
10 KNOTS IN THE LATE MORNING AND AFTERNOON. MOSTLY SUNNY. WAVES
1 FOOT OR LESS.
LSZ147-131000-
SAND ISLAND TO BAYFIELD WI-
613 PM CDT TUE MAY 12 2026
REST OF TONIGHT
NORTHWEST WIND 5 TO 10 KNOTS. CHANCE OF RAIN
SHOWERS EARLY IN THE EVENING, THEN SLIGHT CHANCE OF RAIN SHOWERS
IN THE LATE EVENING AND EARLY MORNING. WAVES 1 TO 2 FEET.
WEDNESDAY
NORTHWEST WIND 5 KNOTS. SUNNY. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
EAST WIND 5 KNOTS EARLY IN THE EVENING
BECOMING VARIABLE 10 KNOTS OR LESS, THEN BECOMING NORTHEAST
5 KNOTS AFTER MIDNIGHT. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
THURSDAY
EAST WIND 5 TO 10 KNOTS. MOSTLY SUNNY. WAVES 1 FOOT
OR LESS.
LSZ150-131000-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
613 PM CDT TUE MAY 12 2026
REST OF TONIGHT
NORTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO
20 KNOTS EARLY IN THE EVENING. SLIGHT CHANCE OF RAIN SHOWERS
UNTIL EARLY MORNING. WAVES 1 TO 3 FEET.
WEDNESDAY
NORTHWEST WIND 5 TO 10 KNOTS BECOMING WEST LATE IN
THE AFTERNOON. SUNNY. WAVES 1 TO 2 FEET.
WEDNESDAY NIGHT
SOUTH WIND 5 KNOTS BECOMING EAST IN THE LATE
EVENING AND OVERNIGHT. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
THURSDAY
EAST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS. MOSTLY SUNNY. WAVES 1 TO 2 FEET.
LSZ121-131000-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
613 PM CDT TUE MAY 12 2026
REST OF TONIGHT
NORTH WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE EVENING. CHANCE OF RAIN SHOWERS IN THE EVENING, THEN
SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. WAVES 1 FOOT OR
LESS.
WEDNESDAY
NORTH WIND 5 TO 10 KNOTS BECOMING NORTHEAST 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 SOUTHEAST
5 KNOTS EARLY IN THE MORNING. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.
THURSDAY
SOUTHEAST WIND 5 TO 10 KNOTS. MOSTLY SUNNY. WAVES
1 FOOT OR LESS.
LSZ148-131000-
OAK POINT TO SAXON HARBOR WI-
613 PM CDT TUE MAY 12 2026
REST OF TONIGHT
NORTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO
20 KNOTS EARLY IN THE EVENING. CHANCE OF RAIN SHOWERS IN THE
EVENING, THEN SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. WAVES
1 TO 2 FEET.
WEDNESDAY
NORTHWEST WIND 5 KNOTS BECOMING NORTHEAST LATE IN
THE AFTERNOON. MOSTLY SUNNY. WAVES 1 TO 2 FEET.
WEDNESDAY NIGHT
SOUTHEAST WIND 5 KNOTS. MOSTLY CLEAR. WAVES
1 FOOT OR LESS.
THURSDAY
EAST WIND 5 TO 10 KNOTS. MOSTLY SUNNY. WAVES 1 FOOT
OR LESS.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
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