370
FZUS53 KDLH 220143
NSHDLH
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
743 PM CST SUN DEC 21 2025
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.
LSZ140-221100-
GRAND PORTAGE TO GRAND MARAIS MN-
743 PM CST SUN DEC 21 2025
REST OF TONIGHT
WEST WIND 5 KNOTS BECOMING NORTHEAST TOWARD
DAYBREAK. MOSTLY CLOUDY. WAVES 1 TO 2 FEET.
MONDAY
NORTHEAST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY. WAVES 1 TO
2 FEET.
MONDAY NIGHT
SOUTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST
10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS EARLY IN THE
MORNING. CHANCE OF SNOW THROUGH THE NIGHT. CHANCE OF LIGHT
FREEZING RAIN AFTER MIDNIGHT. WAVES 1 TO 2 FEET.
TUESDAY
WEST WIND 20 TO 25 KNOTS WITH GUSTS TO AROUND 30 KNOTS
BECOMING NORTHWEST 10 TO 15 KNOTS WITH GUSTS TO AROUND 25 KNOTS
LATE IN THE AFTERNOON. MOSTLY SUNNY. WAVES 1 TO 2 FEET BUILDING
TO 2 TO 4 FEET IN THE LATE MORNING AND EARLY AFTERNOON, THEN
SUBSIDING TO 1 TO 2 FEET LATE IN THE AFTERNOON. A SMALL CRAFT
ADVISORY MAY BE NEEDED.
LSZ141-221100-
GRAND MARAIS TO TACONITE HARBOR MN-
743 PM CST SUN DEC 21 2025
REST OF TONIGHT
WEST WIND 5 KNOTS BECOMING NORTHEAST TOWARD
DAYBREAK. MOSTLY CLOUDY. WAVES 1 TO 2 FEET.
MONDAY
EAST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY. WAVES 1 TO
2 FEET.
MONDAY NIGHT
SOUTHEAST WIND 5 TO 10 KNOTS BECOMING WEST WITH
GUSTS TO AROUND 20 KNOTS EARLY IN THE MORNING. CHANCE OF SNOW AND
LIGHT FREEZING RAIN. WAVES 1 TO 2 FEET.
TUESDAY
NORTHWEST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 30 KNOTS IN THE LATE MORNING AND EARLY AFTERNOON,
THEN DECREASING TO 20 KNOTS LATE IN THE AFTERNOON. MOSTLY SUNNY.
WAVES 1 TO 2 FEET.
LSZ142-221100-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
743 PM CST SUN DEC 21 2025
REST OF TONIGHT
WEST WIND 5 KNOTS BECOMING EAST TOWARD
DAYBREAK. MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
MONDAY
EAST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY. WAVES 1 FOOT OR
LESS.
MONDAY NIGHT
SOUTHEAST WIND 5 TO 10 KNOTS BECOMING WEST WITH
GUSTS TO AROUND 20 KNOTS EARLY IN THE MORNING. CHANCE OF SNOW AND
LIGHT FREEZING RAIN IN THE EVENING, THEN SLIGHT CHANCE OF LIGHT
FREEZING RAIN AND SNOW AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
TUESDAY
NORTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS
INCREASING TO 30 KNOTS IN THE LATE MORNING AND EARLY AFTERNOON,
THEN DECREASING TO 20 KNOTS LATE IN THE AFTERNOON. MOSTLY SUNNY.
WAVES 1 TO 2 FEET.
LSZ143-221100-
SILVER BAY HARBOR TO TWO HARBORS MN-
743 PM CST SUN DEC 21 2025
REST OF TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING SOUTH
TOWARD DAYBREAK. PARTLY CLOUDY EARLY IN THE EVENING THEN BECOMING
MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
MONDAY
EAST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY. WAVES 1 FOOT OR
LESS.
MONDAY NIGHT
EAST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST 10 TO
15 KNOTS WITH GUSTS TO AROUND 20 KNOTS AFTER MIDNIGHT. SLIGHT
CHANCE OF SNOW AND LIGHT FREEZING RAIN IN THE EVENING. WAVES
1 FOOT OR LESS.
TUESDAY
WEST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS
DECREASING TO 20 KNOTS LATE IN THE AFTERNOON. MOSTLY SUNNY. WAVES
1 TO 2 FEET.
LSZ144-221100-
TWO HARBORS TO DULUTH MN-
743 PM CST SUN DEC 21 2025
REST OF TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING
SOUTHEAST TOWARD DAYBREAK. PARTLY CLOUDY EARLY IN THE EVENING
THEN BECOMING MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
MONDAY
EAST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY. WAVES 1 FOOT OR
LESS.
MONDAY NIGHT
SOUTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTH LATE
IN THE EVENING, THEN BECOMING SOUTHWEST AFTER MIDNIGHT BECOMING
WEST 15 TO 20 KNOTS EARLY IN THE MORNING. SLIGHT CHANCE OF LIGHT
FREEZING RAIN AND SNOW IN THE EVENING. WAVES 1 TO 2 FEET.
TUESDAY
WEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND 25 KNOTS
BECOMING NORTHWEST 5 TO 10 KNOTS LATE IN THE AFTERNOON. MOSTLY
SUNNY. WAVES 1 TO 2 FEET.
LSZ145-221100-
DULUTH MN TO PORT WING WI-
743 PM CST SUN DEC 21 2025
REST OF TONIGHT
SOUTH WIND 5 TO 10 KNOTS BECOMING SOUTHEAST
TOWARD DAYBREAK. PARTLY CLOUDY EARLY IN THE EVENING THEN BECOMING
MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
MONDAY
EAST WIND 5 TO 10 KNOTS. MOSTLY CLOUDY. WAVES 1 FOOT OR
LESS.
MONDAY NIGHT
SOUTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTH LATE
IN THE EVENING, THEN BECOMING SOUTHWEST AFTER MIDNIGHT BECOMING
WEST 15 TO 20 KNOTS EARLY IN THE MORNING. SLIGHT CHANCE OF LIGHT
FREEZING RAIN IN THE EVENING. WAVES 1 TO 2 FEET.
TUESDAY
WEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND 25 KNOTS
BECOMING NORTHWEST 5 TO 10 KNOTS LATE IN THE AFTERNOON. MOSTLY
SUNNY. WAVES 1 TO 3 FEET.
LSZ146-221100-
PORT WING TO SAND ISLAND WI-
743 PM CST SUN DEC 21 2025
REST OF TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING SOUTH
TOWARD DAYBREAK. PARTLY CLOUDY EARLY IN THE EVENING THEN BECOMING
MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
MONDAY
SOUTHEAST WIND 5 KNOTS BECOMING EAST IN THE AFTERNOON.
MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
MONDAY NIGHT
SOUTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST
10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS AFTER MIDNIGHT.
SLIGHT CHANCE OF LIGHT FREEZING RAIN AND SNOW IN THE EVENING.
WAVES 1 TO 2 FEET.
TUESDAY
WEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND 25 KNOTS
BECOMING NORTHWEST 5 TO 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS
LATE IN THE AFTERNOON. MOSTLY SUNNY. WAVES 1 TO 3 FEET SUBSIDING
TO 1 TO 2 FEET LATE IN THE AFTERNOON.
LSZ147-221100-
SAND ISLAND TO BAYFIELD WI-
743 PM CST SUN DEC 21 2025
REST OF TONIGHT
SOUTHWEST WIND 5 KNOTS. MOSTLY CLEAR EARLY IN
THE EVENING THEN BECOMING MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
MONDAY
SOUTHEAST WIND 5 KNOTS BECOMING EAST IN THE AFTERNOON.
MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
MONDAY NIGHT
SOUTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST
10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS AFTER MIDNIGHT.
SLIGHT CHANCE OF SNOW IN THE EVENING. SLIGHT CHANCE OF LIGHT
FREEZING RAIN AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
TUESDAY
WEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND 25 KNOTS
BECOMING NORTHWEST 5 TO 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS
LATE IN THE AFTERNOON. MOSTLY SUNNY. WAVES 1 TO 2 FEET BUILDING
TO 1 TO 3 FEET IN THE LATE MORNING AND EARLY AFTERNOON, THEN
SUBSIDING TO 1 TO 2 FEET LATE IN THE AFTERNOON.
LSZ150-221100-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
743 PM CST SUN DEC 21 2025
REST OF TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY
EARLY IN THE EVENING THEN BECOMING MOSTLY CLOUDY. WAVES 1 TO
2 FEET.
MONDAY
SOUTH WIND 5 TO 10 KNOTS BECOMING EAST IN THE
AFTERNOON. MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
MONDAY NIGHT
SOUTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST
10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS AFTER MIDNIGHT.
SLIGHT CHANCE OF SNOW THROUGH THE NIGHT. SLIGHT CHANCE OF LIGHT
FREEZING RAIN AFTER MIDNIGHT. WAVES 1 FOOT OR LESS.
TUESDAY
WEST WIND 15 TO 20 KNOTS. GUSTS UP TO 25 KNOTS
DECREASING TO 20 KNOTS LATE IN THE AFTERNOON. MOSTLY SUNNY. WAVES
1 TO 2 FEET BUILDING TO 2 TO 4 FEET IN THE LATE MORNING AND
AFTERNOON. A SMALL CRAFT ADVISORY MAY BE NEEDED.
LSZ121-221100-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
743 PM CST SUN DEC 21 2025
REST OF TONIGHT
SOUTHWEST WIND 5 KNOTS BECOMING SOUTH TOWARD
DAYBREAK. MOSTLY CLEAR EARLY IN THE EVENING THEN BECOMING MOSTLY
CLOUDY. WAVES 1 FOOT OR LESS.
MONDAY
SOUTH WIND 5 KNOTS BECOMING EAST IN THE AFTERNOON.
MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
MONDAY NIGHT
SOUTHEAST WIND 5 KNOTS BECOMING SOUTH IN THE LATE
EVENING AND EARLY MORNING, THEN BECOMING SOUTHWEST 10 TO 15 KNOTS
WITH GUSTS TO AROUND 20 KNOTS EARLY IN THE MORNING. MOSTLY CLOUDY
IN THE EVENING THEN BECOMING PARTLY CLOUDY. WAVES 1 FOOT OR LESS.
TUESDAY
WEST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS. MOSTLY
SUNNY. WAVES 1 FOOT OR LESS.
LSZ148-221100-
OAK POINT TO SAXON HARBOR WI-
743 PM CST SUN DEC 21 2025
REST OF TONIGHT
SOUTHWEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY
UNTIL EARLY MORNING THEN BECOMING MOSTLY CLOUDY. WAVES 1 FOOT OR
LESS.
MONDAY
SOUTH WIND 5 KNOTS BECOMING EAST IN THE AFTERNOON.
MOSTLY CLOUDY. WAVES 1 FOOT OR LESS.
MONDAY NIGHT
SOUTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTHWEST
10 TO 15 KNOTS WITH GUSTS TO AROUND 20 KNOTS EARLY IN THE
MORNING. MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY
CLOUDY. WAVES 1 FOOT OR LESS.
TUESDAY
WEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS UNTIL
LATE AFTERNOON. MOSTLY SUNNY. WAVES 1 TO 2 FEET.
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
WFO DLH
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