683
FZUS53 KDLH 180536
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
1236 AM CDT WED MAR 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.
LSZ140-181600-
GRAND PORTAGE TO GRAND MARAIS MN-
1236 AM CDT WED MAR 18 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON
TODAY
SOUTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS
UNTIL LATE AFTERNOON. CHANCE OF SNOW IN THE MORNING. SLIGHT
CHANCE OF LIGHT FREEZING RAIN THROUGH THE DAY. SLIGHT CHANCE OF
DRIZZLE, LIGHT FREEZING DRIZZLE AND SNOW IN THE AFTERNOON. WAVES
3 TO 5 FEET.
TONIGHT
WEST WIND 10 TO 15 KNOTS BECOMING NORTHWEST 5 KNOTS
AFTER MIDNIGHT, THEN BECOMING NORTH EARLY IN THE MORNING. SLIGHT
CHANCE OF VERY LIGHT FREEZING DRIZZLE IN THE EVENING. WAVES 2 TO
4 FEET SUBSIDING TO 1 TO 3 FEET IN THE LATE EVENING AND
OVERNIGHT.
THURSDAY
NORTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTHEAST EARLY
IN THE AFTERNOON, THEN BECOMING SOUTH LATE IN THE AFTERNOON.
MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
THURSDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. CHANCE OF SNOW
THROUGH THE NIGHT. WAVES 1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ141-181600-
GRAND MARAIS TO TACONITE HARBOR MN-
1236 AM CDT WED MAR 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM CDT THIS MORNING
TODAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
UNTIL LATE AFTERNOON. CHANCE OF SNOW IN THE MORNING. SLIGHT
CHANCE OF LIGHT FREEZING RAIN AND LIGHT FREEZING DRIZZLE THROUGH
THE DAY. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET IN THE
AFTERNOON.
TONIGHT
WEST WIND 5 TO 10 KNOTS BECOMING NORTHWEST AFTER
MIDNIGHT. SLIGHT CHANCE OF VERY LIGHT FREEZING DRIZZLE IN THE
EVENING. WAVES 1 TO 3 FEET.
THURSDAY
NORTH WIND 5 KNOTS BECOMING NORTHEAST LATE IN THE
MORNING, THEN BECOMING SOUTH IN THE AFTERNOON. MOSTLY SUNNY.
WAVES 1 FOOT OR LESS.
THURSDAY NIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTHWEST EARLY
IN THE MORNING. SLIGHT CHANCE OF SNOW IN THE EVENING. SLIGHT
CHANCE OF RAIN THROUGH THE NIGHT. CHANCE OF SNOW AFTER MIDNIGHT.
WAVES 1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ142-181600-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
1236 AM CDT WED MAR 18 2026
TODAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
EARLY IN THE MORNING. SLIGHT CHANCE OF SNOW EARLY IN THE MORNING.
SLIGHT CHANCE OF LIGHT FREEZING DRIZZLE THROUGH THE DAY. SLIGHT
CHANCE OF DRIZZLE EARLY IN THE AFTERNOON. WAVES 1 TO 3 FEET.
TONIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTHWEST EARLY IN THE
MORNING. SLIGHT CHANCE OF DRIZZLE AND VERY LIGHT FREEZING DRIZZLE
IN THE EVENING. WAVES 1 TO 2 FEET.
THURSDAY
NORTH WIND 5 KNOTS BECOMING NORTHEAST LATE IN THE
MORNING, THEN BECOMING SOUTH IN THE AFTERNOON. MOSTLY SUNNY.
WAVES 1 FOOT OR LESS.
THURSDAY NIGHT
SOUTHWEST WIND 5 KNOTS BECOMING WEST EARLY IN
THE MORNING. SLIGHT CHANCE OF RAIN THROUGH THE NIGHT. WAVES
1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ143-181600-
SILVER BAY HARBOR TO TWO HARBORS MN-
1236 AM CDT WED MAR 18 2026
TODAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
UNTIL LATE AFTERNOON. SLIGHT CHANCE OF SNOW AND LIGHT FREEZING
RAIN EARLY IN THE MORNING. SLIGHT CHANCE OF LIGHT FREEZING
DRIZZLE UNTIL LATE AFTERNOON. SLIGHT CHANCE OF DRIZZLE IN THE
AFTERNOON. WAVES 1 TO 2 FEET.
TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING WEST EARLY IN
THE MORNING. SLIGHT CHANCE OF DRIZZLE THROUGH THE NIGHT. SLIGHT
CHANCE OF RAIN AFTER MIDNIGHT. WAVES 1 TO 2 FEET.
THURSDAY
NORTHWEST WIND 5 KNOTS BECOMING SOUTH LATE IN THE
AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
THURSDAY NIGHT
SOUTHWEST WIND 5 KNOTS. SLIGHT CHANCE OF RAIN
AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ144-181600-
TWO HARBORS TO DULUTH MN-
1236 AM CDT WED MAR 18 2026
TODAY
SOUTHWEST WIND 10 TO 15 KNOTS. SLIGHT CHANCE OF LIGHT
FREEZING RAIN AND SNOW EARLY IN THE MORNING. SLIGHT CHANCE OF
VERY LIGHT FREEZING DRIZZLE UNTIL LATE AFTERNOON. SLIGHT CHANCE
OF DRIZZLE IN THE AFTERNOON. WAVES 1 TO 2 FEET.
TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING NORTH EARLY IN
THE MORNING. CHANCE OF RAIN AND SLIGHT CHANCE OF DRIZZLE IN THE
EVENING, THEN SLIGHT CHANCE OF RAIN AFTER MIDNIGHT. WAVES 1 FOOT
OR LESS.
THURSDAY
NORTHWEST WIND 5 KNOTS BECOMING EAST EARLY IN THE
AFTERNOON, THEN BECOMING SOUTH LATE IN THE AFTERNOON. MOSTLY
SUNNY. WAVES 1 FOOT OR LESS.
THURSDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF
RAIN AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ145-181600-
DULUTH MN TO PORT WING WI-
1236 AM CDT WED MAR 18 2026
TODAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
UNTIL LATE AFTERNOON. SLIGHT CHANCE OF LIGHT FREEZING RAIN AND
SNOW EARLY IN THE MORNING. SLIGHT CHANCE OF VERY LIGHT FREEZING
DRIZZLE UNTIL LATE AFTERNOON. SLIGHT CHANCE OF DRIZZLE IN THE
AFTERNOON. WAVES 1 TO 2 FEET.
TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING NORTH EARLY IN
THE MORNING. CHANCE OF DRIZZLE IN THE EVENING. CHANCE OF RAIN
THROUGH THE NIGHT. WAVES 1 FOOT OR LESS.
THURSDAY
NORTHWEST WIND 5 KNOTS BECOMING NORTHEAST EARLY IN
THE AFTERNOON, THEN BECOMING SOUTH LATE IN THE AFTERNOON. PARTLY
SUNNY. WAVES 1 FOOT OR LESS.
THURSDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY.
WAVES 1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ146-181600-
PORT WING TO SAND ISLAND WI-
1236 AM CDT WED MAR 18 2026
TODAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
UNTIL LATE AFTERNOON. SLIGHT CHANCE OF SNOW EARLY IN THE MORNING.
SLIGHT CHANCE OF LIGHT FREEZING DRIZZLE UNTIL LATE AFTERNOON.
SLIGHT CHANCE OF DRIZZLE IN THE AFTERNOON. WAVES 1 TO 3 FEET.
TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF DRIZZLE
IN THE EVENING. SLIGHT CHANCE OF RAIN THROUGH THE NIGHT. WAVES
1 TO 2 FEET.
THURSDAY
WEST WIND 5 KNOTS BECOMING SOUTHEAST LATE IN THE
AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
THURSDAY NIGHT
SOUTHWEST WIND 5 KNOTS. SLIGHT CHANCE OF RAIN
AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ147-181600-
SAND ISLAND TO BAYFIELD WI-
1236 AM CDT WED MAR 18 2026
TODAY
SOUTHWEST WIND 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS
RISING TO 10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS IN THE
LATE MORNING AND AFTERNOON. SLIGHT CHANCE OF SNOW EARLY IN THE
MORNING. SLIGHT CHANCE OF LIGHT FREEZING DRIZZLE UNTIL LATE
AFTERNOON. WAVES 1 TO 3 FEET.
TONIGHT
SOUTHWEST WIND 5 KNOTS. SLIGHT CHANCE OF RAIN THROUGH
THE NIGHT. WAVES 1 TO 2 FEET.
THURSDAY
NORTH WIND 5 KNOTS BECOMING SOUTHEAST LATE IN THE
AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
THURSDAY NIGHT
SOUTH WIND 5 KNOTS BECOMING SOUTHWEST AFTER
MIDNIGHT. SLIGHT CHANCE OF RAIN THROUGH THE NIGHT. WAVES 1 FOOT
OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ150-181600-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
1236 AM CDT WED MAR 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM CDT THIS MORNING
TODAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS
UNTIL LATE AFTERNOON. SLIGHT CHANCE OF SNOW EARLY IN THE MORNING.
SLIGHT CHANCE OF VERY LIGHT FREEZING DRIZZLE THROUGH THE DAY.
WAVES 1 TO 3 FEET.
TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING WEST EARLY IN
THE MORNING. SLIGHT CHANCE OF RAIN AND SNOW IN THE EVENING. WAVES
1 TO 2 FEET.
THURSDAY
NORTH WIND 5 KNOTS BECOMING SOUTHEAST LATE IN THE
AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
THURSDAY NIGHT
SOUTH WIND 5 KNOTS BECOMING SOUTHWEST AFTER
MIDNIGHT. SLIGHT CHANCE OF RAIN THROUGH THE NIGHT. WAVES 1 FOOT
OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ148-181600-
OAK POINT TO SAXON HARBOR WI-
1236 AM CDT WED MAR 18 2026
TODAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS IN
THE MORNING. SLIGHT CHANCE OF SNOW EARLY IN THE MORNING. SLIGHT
CHANCE OF VERY LIGHT FREEZING DRIZZLE UNTIL LATE AFTERNOON.
SLIGHT CHANCE OF DRIZZLE IN THE AFTERNOON. WAVES 1 TO 2 FEET.
TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. CHANCE OF RAIN AND
SLIGHT CHANCE OF DRIZZLE IN THE EVENING, THEN SLIGHT CHANCE OF
RAIN AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
THURSDAY
NORTHWEST WIND 5 KNOTS BECOMING EAST LATE IN THE
AFTERNOON. MOSTLY SUNNY. WAVES 1 FOOT OR LESS.
THURSDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF
RAIN AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page