A storm system will continue to produce widespread showers and thunderstorms as it progresses eastward across the central U.S. into the Northeast through the weekend. There are risks of severe thunderstorms and excessive rainfall on Saturday from the Ozarks into the mid-Mississippi River Valley with potential for damaging winds, large hail, tornadoes, and flash flooding. Read More >
FZUS53 KDLH 171447
NSTDLH
EXPERIMENTAL TABULAR NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE DULUTH MN
947 AM CDT FRI OCT 17 2025
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.
LSZ140-172100-
GRAND PORTAGE TO GRAND MARAIS MN-
947 AM CDT FRI OCT 17 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM CDT SATURDAY...
.THIS AFTERNOON...
WEATHER.............CLOUDY WITH CHANCE OF SHOWERS, THEN MOSTLY
CLOUDY IN THE LATE MORNING AND AFTERNOON.
SFC WINDS...........SOUTH 10 TO 15 KNOTS.
100-FT WINDS........SOUTH 15 TO 20 KNOTS.
SIG WAVES...........2 TO 4 FEET.
.TONIGHT...
WEATHER.............PARTLY CLOUDY.
SFC WINDS...........SOUTHWEST 15 TO 20 KNOTS.
100-FT WINDS........SOUTHWEST 20 TO 25 KNOTS.
SIG WAVES...........2 TO 4 FEET.
.SATURDAY...
WEATHER.............MOSTLY SUNNY.
SFC WINDS...........SOUTHWEST 5 TO 10 KNOTS.
100-FT WINDS........SOUTHWEST 10 TO 15 KNOTS.
SIG WAVES...........2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET IN THE
LATE MORNING AND AFTERNOON.
.SATURDAY NIGHT...
WEATHER.............MOSTLY CLOUDY.
SFC WINDS...........NORTHWEST 10 TO 15 KNOTS.
100-FT WINDS........NORTHWEST 15 TO 20 KNOTS.
SIG WAVES...........1 TO 3 FEET.
.FORECAST DAYS 3 THROUGH 5...
.SUNDAY...WEST WINDS 10 TO 15 KNOTS. WAVES 2 TO 4 FEET.
.MONDAY...CHANCE OF SHOWERS. SOUTHWEST WINDS 15 TO 20 KNOTS.
WAVES 2 TO 4 FEET.
.TUESDAY...CHANCE OF SHOWERS. NORTHWEST WINDS 15 TO 20 KNOTS.
WAVES 6 TO 9 FEET.
$$
LSZ141-172100-
GRAND MARAIS TO TACONITE HARBOR MN-
947 AM CDT FRI OCT 17 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING...
.THIS AFTERNOON...
WEATHER.............MOSTLY CLOUDY WITH CHANCE OF SHOWERS.
SFC WINDS...........SOUTHEAST 5 TO 10 KNOTS BECOMING SOUTH EARLY IN
THE AFTERNOON.
100-FT WINDS........SOUTHEAST 10 TO 15 KNOTS BECOMING SOUTH EARLY
IN THE AFTERNOON.
SIG WAVES...........1 TO 3 FEET.
.TONIGHT...
WEATHER.............PARTLY CLOUDY.
SFC WINDS...........SOUTHWEST 10 TO 15 KNOTS.
100-FT WINDS........SOUTHWEST 15 TO 20 KNOTS.
SIG WAVES...........2 TO 4 FEET.
.SATURDAY...
WEATHER.............MOSTLY SUNNY.
SFC WINDS...........WEST 5 TO 10 KNOTS.
100-FT WINDS........WEST 10 TO 15 KNOTS.
SIG WAVES...........1 TO 3 FEET.
.SATURDAY NIGHT...
WEATHER.............MOSTLY CLOUDY.
SFC WINDS...........NORTHWEST 10 TO 15 KNOTS.
100-FT WINDS........NORTHWEST 15 TO 20 KNOTS.
SIG WAVES...........2 FEET OR LESS.
.FORECAST DAYS 3 THROUGH 5...
.SUNDAY...WEST WINDS 10 TO 15 KNOTS. WAVES 2 TO 4 FEET.
.MONDAY...CHANCE OF SHOWERS. SOUTHWEST WINDS 15 TO 20 KNOTS.
WAVES 2 TO 4 FEET.
.TUESDAY...CHANCE OF SHOWERS. NORTHWEST WINDS 15 TO 20 KNOTS.
WAVES 6 TO 9 FEET.
$$
LSZ142-172100-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
947 AM CDT FRI OCT 17 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING...
.THIS AFTERNOON...
WEATHER.............MOSTLY CLOUDY WITH CHANCE OF SHOWERS, THEN
MOSTLY CLOUDY IN THE LATE MORNING AND
AFTERNOON.
SFC WINDS...........SOUTHEAST 5 TO 10 KNOTS BECOMING SOUTHWEST 10
TO 15 KNOTS EARLY IN THE AFTERNOON.
100-FT WINDS........SOUTHEAST 10 TO 15 KNOTS BECOMING SOUTHWEST 15
TO 20 KNOTS EARLY IN THE AFTERNOON.
SIG WAVES...........1 TO 3 FEET.
.TONIGHT...
WEATHER.............PARTLY CLOUDY.
SFC WINDS...........SOUTHWEST 10 TO 15 KNOTS.
100-FT WINDS........SOUTHWEST 15 TO 20 KNOTS.
SIG WAVES...........1 TO 3 FEET.
.SATURDAY...
WEATHER.............PARTLY SUNNY.
SFC WINDS...........SOUTHWEST 5 TO 10 KNOTS.
100-FT WINDS........WEST 10 TO 15 KNOTS.
SIG WAVES...........2 FEET OR LESS.
.SATURDAY NIGHT...
WEATHER.............MOSTLY CLOUDY.
SFC WINDS...........NORTHWEST 10 TO 15 KNOTS.
100-FT WINDS........NORTHWEST 15 TO 20 KNOTS.
SIG WAVES...........2 FEET OR LESS.
.FORECAST DAYS 3 THROUGH 5...
.SUNDAY...WEST WINDS 10 TO 15 KNOTS. WAVES 2 TO 4 FEET.
.MONDAY...CHANCE OF SHOWERS. SOUTHWEST WINDS 15 TO 20 KNOTS.
WAVES 2 TO 4 FEET.
.TUESDAY...CHANCE OF SHOWERS. NORTHWEST WINDS 15 TO 20 KNOTS.
WAVES 6 TO 9 FEET.
$$
LSZ143-172100-
SILVER BAY HARBOR TO TWO HARBORS MN-
947 AM CDT FRI OCT 17 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING...
.THIS AFTERNOON...
WEATHER.............MOSTLY CLOUDY WITH CHANCE OF SHOWERS, THEN
MOSTLY CLOUDY IN THE LATE MORNING AND
AFTERNOON.
SFC WINDS...........SOUTH 5 TO 10 KNOTS BECOMING SOUTHWEST 10 TO 15
KNOTS EARLY IN THE AFTERNOON.
100-FT WINDS........SOUTH 10 TO 15 KNOTS BECOMING SOUTHWEST 15 TO
20 KNOTS EARLY IN THE AFTERNOON.
SIG WAVES...........2 TO 4 FEET.
.TONIGHT...
WEATHER.............PARTLY CLOUDY.
SFC WINDS...........SOUTHWEST 10 TO 15 KNOTS.
100-FT WINDS........SOUTHWEST 15 TO 20 KNOTS.
SIG WAVES...........2 TO 4 FEET.
.SATURDAY...
WEATHER.............PARTLY SUNNY.
SFC WINDS...........WEST 5 TO 10 KNOTS.
100-FT WINDS........WEST 10 TO 15 KNOTS.
SIG WAVES...........2 FEET OR LESS.
.SATURDAY NIGHT...
WEATHER.............MOSTLY CLOUDY.
SFC WINDS...........NORTHWEST 10 TO 15 KNOTS.
100-FT WINDS........NORTHWEST 15 TO 20 KNOTS.
SIG WAVES...........2 FEET OR LESS.
.FORECAST DAYS 3 THROUGH 5...
.SUNDAY...WEST WINDS 10 TO 15 KNOTS. WAVES 2 TO 4 FEET.
.MONDAY...CHANCE OF SHOWERS. SOUTHWEST WINDS 15 TO 20 KNOTS.
WAVES 2 TO 4 FEET.
.TUESDAY...CHANCE OF SHOWERS. NORTHWEST WINDS 15 TO 20 KNOTS.
WAVES 6 TO 9 FEET.
$$
LSZ144-172100-
TWO HARBORS TO DULUTH MN-
947 AM CDT FRI OCT 17 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING...
.THIS AFTERNOON...
WEATHER.............MOSTLY CLOUDY WITH CHANCE OF SHOWERS, THEN
PARTLY SUNNY EARLY IN THE AFTERNOON.
SFC WINDS...........SOUTH 10 TO 15 KNOTS BECOMING SOUTHWEST 15 TO
20 KNOTS EARLY IN THE AFTERNOON.
100-FT WINDS........SOUTH 15 TO 20 KNOTS BECOMING SOUTHWEST 20 TO
25 KNOTS EARLY IN THE AFTERNOON.
SIG WAVES...........2 TO 4 FEET.
.TONIGHT...
WEATHER.............PARTLY CLOUDY.
SFC WINDS...........SOUTHWEST 15 TO 20 KNOTS DECREASING TO 5 TO 10
KNOTS AFTER MIDNIGHT.
100-FT WINDS........SOUTHWEST 20 TO 25 KNOTS DECREASING TO 10 TO 15
KNOTS AFTER MIDNIGHT.
SIG WAVES...........2 TO 4 FEET.
.SATURDAY...
WEATHER.............PARTLY SUNNY.
SFC WINDS...........WEST 5 TO 10 KNOTS.
100-FT WINDS........WEST 10 TO 15 KNOTS.
SIG WAVES...........2 FEET OR LESS.
.SATURDAY NIGHT...
WEATHER.............MOSTLY CLOUDY.
SFC WINDS...........NORTHWEST 10 TO 15 KNOTS.
100-FT WINDS........NORTHWEST 15 TO 20 KNOTS.
SIG WAVES...........1 TO 3 FEET.
.FORECAST DAYS 3 THROUGH 5...
.SUNDAY...WEST WINDS 10 TO 15 KNOTS. WAVES 2 TO 4 FEET.
.MONDAY...CHANCE OF SHOWERS. SOUTHWEST WINDS 15 TO 20 KNOTS.
WAVES 2 TO 4 FEET.
.TUESDAY...CHANCE OF SHOWERS. NORTHWEST WINDS 15 TO 20 KNOTS.
WAVES 6 TO 9 FEET.
$$
LSZ145-172100-
DULUTH MN TO PORT WING WI-
947 AM CDT FRI OCT 17 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING...
.THIS AFTERNOON...
WEATHER.............MOSTLY CLOUDY WITH CHANCE OF SHOWERS, THEN
MOSTLY CLOUDY IN THE LATE MORNING AND
AFTERNOON.
SFC WINDS...........SOUTHWEST 15 TO 20 KNOTS.
100-FT WINDS........SOUTHWEST 20 TO 25 KNOTS.
SIG WAVES...........2 TO 4 FEET.
.TONIGHT...
WEATHER.............PARTLY CLOUDY.
SFC WINDS...........SOUTHWEST 15 TO 20 KNOTS DECREASING TO 5 TO 10
KNOTS AFTER MIDNIGHT.
100-FT WINDS........SOUTHWEST 20 TO 25 KNOTS DECREASING TO 10 TO 15
KNOTS AFTER MIDNIGHT.
SIG WAVES...........2 TO 4 FEET.
.SATURDAY...
WEATHER.............PARTLY SUNNY.
SFC WINDS...........SOUTHWEST 5 TO 10 KNOTS BECOMING WEST EARLY IN
THE AFTERNOON.
100-FT WINDS........SOUTHWEST 10 TO 15 KNOTS BECOMING WEST EARLY IN
THE AFTERNOON.
SIG WAVES...........1 TO 3 FEET.
.SATURDAY NIGHT...
WEATHER.............MOSTLY CLOUDY.
SFC WINDS...........NORTHWEST 10 TO 15 KNOTS.
100-FT WINDS........NORTHWEST 15 TO 20 KNOTS.
SIG WAVES...........1 TO 3 FEET.
.FORECAST DAYS 3 THROUGH 5...
.SUNDAY...WEST WINDS 10 TO 15 KNOTS. WAVES 2 TO 4 FEET.
.MONDAY...CHANCE OF SHOWERS. SOUTHWEST WINDS 15 TO 20 KNOTS.
WAVES 2 TO 4 FEET.
.TUESDAY...CHANCE OF SHOWERS. NORTHWEST WINDS 15 TO 20 KNOTS.
WAVES 6 TO 9 FEET.
$$
LSZ146-172100-
PORT WING TO SAND ISLAND WI-
947 AM CDT FRI OCT 17 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING...
.THIS AFTERNOON...
WEATHER.............MOSTLY CLOUDY WITH CHANCE OF SHOWERS, THEN
MOSTLY CLOUDY IN THE LATE MORNING AND
AFTERNOON.
SFC WINDS...........SOUTHWEST 10 TO 15 KNOTS.
100-FT WINDS........SOUTHWEST 15 TO 20 KNOTS.
SIG WAVES...........1 TO 3 FEET.
.TONIGHT...
WEATHER.............PARTLY CLOUDY.
SFC WINDS...........SOUTHWEST 15 TO 20 KNOTS.
100-FT WINDS........SOUTHWEST 20 TO 25 KNOTS.
SIG WAVES...........2 TO 4 FEET.
OCNL WAVES..........AROUND 5 FEET EARLY IN THE EVENING.
.SATURDAY...
WEATHER.............PARTLY SUNNY.
SFC WINDS...........WEST 5 TO 10 KNOTS.
100-FT WINDS........WEST 10 TO 15 KNOTS.
SIG WAVES...........1 TO 3 FEET.
.SATURDAY NIGHT...
WEATHER.............MOSTLY CLOUDY.
SFC WINDS...........NORTHWEST 10 TO 15 KNOTS.
100-FT WINDS........NORTHWEST 15 TO 20 KNOTS.
SIG WAVES...........1 TO 3 FEET.
.FORECAST DAYS 3 THROUGH 5...
.SUNDAY...WEST WINDS 10 TO 15 KNOTS. WAVES 2 TO 4 FEET.
.MONDAY...CHANCE OF SHOWERS. SOUTHWEST WINDS 15 TO 20 KNOTS.
WAVES 2 TO 4 FEET.
.TUESDAY...CHANCE OF SHOWERS. NORTHWEST WINDS 15 TO 20 KNOTS.
WAVES 6 TO 9 FEET.
$$
LSZ147-172100-
SAND ISLAND TO BAYFIELD WI-
947 AM CDT FRI OCT 17 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING...
.THIS AFTERNOON...
WEATHER.............MOSTLY CLOUDY WITH CHANCE OF SHOWERS, THEN
PARTLY SUNNY EARLY IN THE AFTERNOON.
SFC WINDS...........SOUTH 10 TO 15 KNOTS.
100-FT WINDS........SOUTH 15 TO 20 KNOTS.
SIG WAVES...........1 TO 3 FEET.
.TONIGHT...
WEATHER.............PARTLY CLOUDY.
SFC WINDS...........SOUTHWEST 15 TO 20 KNOTS.
100-FT WINDS........SOUTHWEST 20 TO 25 KNOTS.
SIG WAVES...........1 TO 3 FEET.
.SATURDAY...
WEATHER.............MOSTLY SUNNY.
SFC WINDS...........WEST 5 TO 10 KNOTS.
100-FT WINDS........WEST 10 TO 15 KNOTS.
SIG WAVES...........1 TO 3 FEET.
.SATURDAY NIGHT...
WEATHER.............MOSTLY CLOUDY.
SFC WINDS...........NORTHWEST 15 TO 20 KNOTS.
100-FT WINDS........NORTHWEST 20 TO 25 KNOTS.
SIG WAVES...........1 TO 3 FEET.
.FORECAST DAYS 3 THROUGH 5...
.SUNDAY...WEST WINDS 10 TO 15 KNOTS. WAVES 2 TO 4 FEET.
.MONDAY...CHANCE OF SHOWERS. SOUTHWEST WINDS 15 TO 20 KNOTS.
WAVES 2 TO 4 FEET.
.TUESDAY...CHANCE OF SHOWERS. NORTHWEST WINDS 15 TO 20 KNOTS.
WAVES 6 TO 9 FEET.
$$
LSZ150-172100-
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-
947 AM CDT FRI OCT 17 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING...
.THIS AFTERNOON...
WEATHER.............MOSTLY CLOUDY WITH CHANCE OF SHOWERS, THEN
PARTLY SUNNY EARLY IN THE AFTERNOON.
SFC WINDS...........SOUTH 10 TO 15 KNOTS.
100-FT WINDS........SOUTH 15 TO 20 KNOTS.
SIG WAVES...........2 TO 4 FEET.
.TONIGHT...
WEATHER.............PARTLY CLOUDY.
SFC WINDS...........SOUTHWEST 15 TO 20 KNOTS.
100-FT WINDS........SOUTHWEST 20 TO 25 KNOTS.
SIG WAVES...........2 TO 4 FEET.
.SATURDAY...
WEATHER.............MOSTLY SUNNY.
SFC WINDS...........WEST 10 TO 15 KNOTS.
100-FT WINDS........WEST 15 TO 20 KNOTS.
SIG WAVES...........1 TO 3 FEET.
.SATURDAY NIGHT...
WEATHER.............MOSTLY CLOUDY.
SFC WINDS...........NORTHWEST 15 TO 20 KNOTS.
100-FT WINDS........NORTHWEST 20 TO 25 KNOTS.
SIG WAVES...........1 TO 3 FEET.
.FORECAST DAYS 3 THROUGH 5...
.SUNDAY...WEST WINDS 10 TO 15 KNOTS. WAVES 2 TO 4 FEET.
.MONDAY...CHANCE OF SHOWERS. SOUTHWEST WINDS 15 TO 20 KNOTS.
WAVES 2 TO 4 FEET.
.TUESDAY...CHANCE OF SHOWERS. NORTHWEST WINDS 15 TO 20 KNOTS.
WAVES 6 TO 9 FEET.
$$
LSZ121-172100-
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-
947 AM CDT FRI OCT 17 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING...
.THIS AFTERNOON...
WEATHER.............MOSTLY CLOUDY WITH CHANCE OF SHOWERS, THEN
PARTLY SUNNY EARLY IN THE AFTERNOON.
SFC WINDS...........SOUTHWEST 10 TO 15 KNOTS.
100-FT WINDS........SOUTHWEST 15 TO 20 KNOTS.
SIG WAVES...........1 TO 3 FEET.
.TONIGHT...
WEATHER.............PARTLY CLOUDY.
SFC WINDS...........SOUTHWEST 10 TO 15 KNOTS.
100-FT WINDS........SOUTHWEST 15 TO 20 KNOTS.
SIG WAVES...........1 TO 3 FEET.
.SATURDAY...
WEATHER.............MOSTLY SUNNY.
SFC WINDS...........SOUTHWEST 5 TO 10 KNOTS BECOMING WEST EARLY IN
THE AFTERNOON.
100-FT WINDS........SOUTHWEST 10 TO 15 KNOTS BECOMING WEST EARLY IN
THE AFTERNOON.
SIG WAVES...........2 FEET OR LESS.
.SATURDAY NIGHT...
WEATHER.............MOSTLY CLOUDY.
SFC WINDS...........NORTHWEST 10 TO 15 KNOTS.
100-FT WINDS........NORTHWEST 15 TO 20 KNOTS.
SIG WAVES...........2 FEET OR LESS.
.FORECAST DAYS 3 THROUGH 5...
.SUNDAY...WEST WINDS 10 TO 15 KNOTS. WAVES 2 TO 4 FEET.
.MONDAY...CHANCE OF SHOWERS. SOUTHWEST WINDS 15 TO 20 KNOTS.
WAVES 2 TO 4 FEET.
.TUESDAY...CHANCE OF SHOWERS. NORTHWEST WINDS 15 TO 20 KNOTS.
WAVES 6 TO 9 FEET.
$$
LSZ148-172100-
OAK POINT TO SAXON HARBOR WI-
947 AM CDT FRI OCT 17 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...
.THIS AFTERNOON...
WEATHER.............MOSTLY CLOUDY WITH CHANCE OF SHOWERS, THEN
PARTLY SUNNY EARLY IN THE AFTERNOON.
SFC WINDS...........SOUTH 15 TO 20 KNOTS.
100-FT WINDS........SOUTHWEST 20 TO 25 KNOTS.
SIG WAVES...........1 TO 3 FEET.
.TONIGHT...
WEATHER.............PARTLY CLOUDY.
SFC WINDS...........SOUTHWEST 10 TO 15 KNOTS.
100-FT WINDS........SOUTHWEST 15 TO 20 KNOTS.
SIG WAVES...........1 TO 3 FEET.
.SATURDAY...
WEATHER.............MOSTLY SUNNY.
SFC WINDS...........SOUTHWEST 5 TO 10 KNOTS BECOMING NORTHWEST
EARLY IN THE AFTERNOON.
100-FT WINDS........SOUTHWEST 10 TO 15 KNOTS BECOMING NORTHWEST
EARLY IN THE AFTERNOON.
SIG WAVES...........2 FEET OR LESS.
.SATURDAY NIGHT...
WEATHER.............MOSTLY CLOUDY WITH CHANCE OF SHOWERS, THEN
MOSTLY CLOUDY AFTER MIDNIGHT.
SFC WINDS...........NORTHWEST 10 TO 15 KNOTS INCREASING TO 15 TO 20
KNOTS AFTER MIDNIGHT.
100-FT WINDS........NORTHWEST 15 TO 20 KNOTS INCREASING TO 20 TO 25
KNOTS AFTER MIDNIGHT.
SIG WAVES...........1 TO 3 FEET.
.FORECAST DAYS 3 THROUGH 5...
.SUNDAY...WEST WINDS 10 TO 15 KNOTS. WAVES 2 TO 4 FEET.
.MONDAY...CHANCE OF SHOWERS. SOUTHWEST WINDS 15 TO 20 KNOTS.
WAVES 2 TO 4 FEET.
.TUESDAY...CHANCE OF SHOWERS. NORTHWEST WINDS 15 TO 20 KNOTS.
WAVES 6 TO 9 FEET.
$$
Occasional waves will only be displayed when values meet or exceed 5 feet.
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