137
FZUS53 KDLH 182055
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
355 PM 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.
LSZ140-190400-
GRAND PORTAGE TO GRAND MARAIS MN-
355 PM CDT WED MAR 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON
TONIGHT
WEST WIND 10 TO 15 KNOTS BECOMING NORTHWEST 5 TO
10 KNOTS AFTER MIDNIGHT. MOSTLY CLOUDY IN THE EVENING THEN
BECOMING PARTLY CLOUDY. WAVES 1 TO 2 FEET.
THURSDAY
NORTH WIND 5 TO 10 KNOTS BECOMING NORTHWEST LATE IN
THE MORNING, THEN BECOMING SOUTHWEST IN THE AFTERNOON. CHANCE OF
SNOW AND LIGHT FREEZING DRIZZLE IN THE AFTERNOON. WAVES 1 FOOT OR
LESS.
THURSDAY NIGHT
SOUTH WIND 5 TO 10 KNOTS BECOMING SOUTHEAST
LATE IN THE EVENING, THEN BECOMING SOUTHWEST AFTER MIDNIGHT.
CHANCE OF SNOW IN THE EVENING. CHANCE OF DRIZZLE AND LIGHT
FREEZING DRIZZLE THROUGH THE NIGHT. WAVES 1 FOOT OR LESS.
FRIDAY
NORTHWEST WIND 5 TO 10 KNOTS BECOMING NORTH EARLY IN
THE AFTERNOON, THEN BECOMING WEST LATE IN THE AFTERNOON. CHANCE
OF LIGHT FREEZING DRIZZLE AND SLIGHT CHANCE OF DRIZZLE IN THE
MORNING. WAVES 1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ141-190400-
GRAND MARAIS TO TACONITE HARBOR MN-
355 PM CDT WED MAR 18 2026
TONIGHT
WEST WIND 5 TO 10 KNOTS BECOMING NORTHWEST AFTER
MIDNIGHT. SLIGHT CHANCE OF LIGHT FREEZING DRIZZLE IN THE LATE
EVENING AND EARLY MORNING. WAVES 1 TO 2 FEET.
THURSDAY
NORTH WIND 5 KNOTS BECOMING SOUTHWEST IN THE LATE
MORNING AND AFTERNOON. SLIGHT CHANCE OF DRIZZLE AND LIGHT
FREEZING DRIZZLE IN THE AFTERNOON. WAVES 1 FOOT OR LESS.
THURSDAY NIGHT
SOUTHEAST WIND 5 KNOTS BECOMING SOUTHWEST AFTER
MIDNIGHT. CHANCE OF SNOW IN THE EVENING. CHANCE OF DRIZZLE AND
LIGHT FREEZING DRIZZLE THROUGH THE NIGHT. WAVES 1 FOOT OR LESS.
FRIDAY
NORTHWEST WIND 5 KNOTS. SLIGHT CHANCE OF LIGHT FREEZING
DRIZZLE IN THE MORNING. WAVES 1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ142-190400-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
355 PM CDT WED MAR 18 2026
TONIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTHWEST AFTER
MIDNIGHT. SLIGHT CHANCE OF DRIZZLE AND LIGHT FREEZING DRIZZLE IN
THE LATE EVENING AND EARLY MORNING. WAVES 1 TO 2 FEET.
THURSDAY
NORTH WIND 5 KNOTS BECOMING EAST LATE IN THE MORNING,
THEN BECOMING SOUTH IN THE AFTERNOON. SLIGHT CHANCE OF DRIZZLE
AND LIGHT FREEZING DRIZZLE IN THE AFTERNOON. WAVES 1 FOOT OR
LESS.
THURSDAY NIGHT
SOUTHEAST WIND 5 KNOTS BECOMING SOUTHWEST AFTER
MIDNIGHT. SLIGHT CHANCE OF DRIZZLE AND LIGHT FREEZING DRIZZLE
THROUGH THE NIGHT. WAVES 1 FOOT OR LESS.
FRIDAY
WEST WIND 5 KNOTS. PARTLY SUNNY. WAVES 1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ143-190400-
SILVER BAY HARBOR TO TWO HARBORS MN-
355 PM CDT WED MAR 18 2026
TONIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTH LATE IN THE
NIGHT. SLIGHT CHANCE OF DRIZZLE UNTIL EARLY MORNING. SLIGHT
CHANCE OF LIGHT FREEZING DRIZZLE IN THE LATE EVENING AND EARLY
MORNING. WAVES 1 TO 2 FEET.
THURSDAY
NORTH WIND 5 KNOTS BECOMING NORTHEAST LATE IN THE
MORNING, THEN BECOMING SOUTH IN THE AFTERNOON. PARTLY SUNNY.
WAVES 1 FOOT OR LESS.
THURSDAY NIGHT
SOUTHEAST WIND 5 KNOTS BECOMING SOUTHWEST EARLY
IN THE MORNING. SLIGHT CHANCE OF DRIZZLE AND LIGHT FREEZING
DRIZZLE IN THE EVENING. WAVES 1 FOOT OR LESS.
FRIDAY
WEST WIND 5 KNOTS. PARTLY SUNNY. WAVES 1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ144-190400-
TWO HARBORS TO DULUTH MN-
355 PM CDT WED MAR 18 2026
TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING NORTHWEST LATE
IN THE NIGHT. SLIGHT CHANCE OF DRIZZLE UNTIL EARLY MORNING.
SLIGHT CHANCE OF SNOW LATE IN THE EVENING. WAVES 1 FOOT OR LESS.
THURSDAY
NORTH WIND 5 KNOTS BECOMING NORTHEAST LATE IN THE
MORNING, THEN BECOMING SOUTHEAST IN THE AFTERNOON. PARTLY SUNNY.
WAVES 1 FOOT OR LESS.
THURSDAY NIGHT
SOUTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST
EARLY IN THE MORNING. MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
FRIDAY
WEST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY. WAVES 1 FOOT OR
LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ145-190400-
DULUTH MN TO PORT WING WI-
355 PM CDT WED MAR 18 2026
TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING NORTHWEST LATE
IN THE NIGHT. SLIGHT CHANCE OF DRIZZLE UNTIL EARLY MORNING.
SLIGHT CHANCE OF LIGHT FREEZING DRIZZLE AFTER MIDNIGHT. WAVES
1 FOOT OR LESS.
THURSDAY
NORTHEAST WIND 5 KNOTS BECOMING SOUTHEAST LATE IN THE
AFTERNOON. PARTLY SUNNY. WAVES 1 FOOT OR LESS.
THURSDAY NIGHT
SOUTH WIND 5 TO 10 KNOTS BECOMING SOUTHWEST
10 TO 15 KNOTS IN THE LATE EVENING AND OVERNIGHT. MOSTLY CLOUDY.
WAVES 1 FOOT OR LESS.
FRIDAY
WEST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY. WAVES 1 FOOT OR
LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ146-190400-
PORT WING TO SAND ISLAND WI-
355 PM CDT WED MAR 18 2026
TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING NORTHWEST LATE
IN THE NIGHT. SLIGHT CHANCE OF DRIZZLE UNTIL EARLY MORNING. WAVES
1 TO 2 FEET.
THURSDAY
NORTH WIND 5 KNOTS BECOMING EAST LATE IN THE MORNING,
THEN BECOMING SOUTHWEST IN THE AFTERNOON. PARTLY SUNNY. WAVES
1 FOOT OR LESS.
THURSDAY NIGHT
SOUTHEAST WIND 5 KNOTS BECOMING SOUTHWEST AFTER
MIDNIGHT. SLIGHT CHANCE OF DRIZZLE IN THE EVENING. WAVES 1 FOOT
OR LESS.
FRIDAY
WEST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY. WAVES 1 FOOT OR
LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ147-190400-
SAND ISLAND TO BAYFIELD WI-
355 PM CDT WED MAR 18 2026
TONIGHT
SOUTHWEST WIND 5 KNOTS BECOMING NORTHWEST LATE IN THE
NIGHT. SLIGHT CHANCE OF DRIZZLE UNTIL EARLY MORNING. SLIGHT
CHANCE OF LIGHT FREEZING DRIZZLE AFTER MIDNIGHT. WAVES 1 TO
2 FEET.
THURSDAY
NORTH WIND 5 KNOTS BECOMING SOUTHEAST IN THE
AFTERNOON. PARTLY SUNNY. WAVES 1 FOOT OR LESS.
THURSDAY NIGHT
SOUTH WIND 5 KNOTS BECOMING SOUTHWEST AFTER
MIDNIGHT. SLIGHT CHANCE OF LIGHT FREEZING DRIZZLE IN THE EVENING.
SLIGHT CHANCE OF DRIZZLE THROUGH THE NIGHT. WAVES 1 FOOT OR LESS.
FRIDAY
WEST WIND 5 KNOTS. PARTLY SUNNY. WAVES 1 FOOT OR LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ150-190400-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
355 PM CDT WED MAR 18 2026
TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING NORTH LATE IN
THE NIGHT. SLIGHT CHANCE OF DRIZZLE IN THE LATE EVENING AND EARLY
MORNING. WAVES 1 TO 2 FEET.
THURSDAY
NORTHEAST WIND 5 KNOTS BECOMING SOUTHEAST IN THE
AFTERNOON. SLIGHT CHANCE OF LIGHT FREEZING DRIZZLE IN THE
AFTERNOON. WAVES 1 FOOT OR LESS.
THURSDAY NIGHT
SOUTH WIND 5 TO 10 KNOTS BECOMING SOUTHWEST
AFTER MIDNIGHT. SLIGHT CHANCE OF LIGHT FREEZING DRIZZLE IN THE
EVENING. SLIGHT CHANCE OF DRIZZLE THROUGH THE NIGHT. WAVES 1 FOOT
OR LESS.
FRIDAY
WEST WIND 5 TO 10 KNOTS. PARTLY SUNNY. WAVES 1 FOOT OR
LESS.
NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.
LSZ148-190400-
OAK POINT TO SAXON HARBOR WI-
355 PM CDT WED MAR 18 2026
TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING NORTHWEST LATE
IN THE NIGHT. SLIGHT CHANCE OF DRIZZLE UNTIL EARLY MORNING. WAVES
1 FOOT OR LESS.
THURSDAY
NORTH WIND 5 KNOTS BECOMING SOUTHEAST LATE IN THE
AFTERNOON. PARTLY SUNNY. WAVES 1 FOOT OR LESS.
THURSDAY NIGHT
SOUTHEAST WIND 5 KNOTS BECOMING SOUTHWEST 10 TO
15 KNOTS IN THE LATE EVENING AND EARLY MORNING, THEN EASING TO
5 TO 10 KNOTS EARLY IN THE MORNING. MOSTLY CLOUDY. WAVES 1 FOOT
OR LESS.
FRIDAY
WEST WIND 5 TO 10 KNOTS BECOMING NORTHWEST IN THE
AFTERNOON. PARTLY SUNNY. 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
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