370
FZUS53 KMKX 200810
NSHMKX
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
310 AM CDT MON APR 20 2026
FOR WATERS WITHIN FIVE NAUTICAL MILES OF SHORE ON LAKE MICHIGAN
LMZ643-202100-
SHEBOYGAN TO PORT WASHINGTON WI-
310 AM CDT MON APR 20 2026
EARLY THIS MORNING
EAST WIND 5 TO 10 KNOTS. CLEAR. WAVES 1 TO
3 FEET.
TODAY
SOUTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTH 10 TO
15 KNOTS LATE IN THE MORNING, THEN RISING TO 15 TO 20 KNOTS IN
THE AFTERNOON. SUNNY. WAVES 1 TO 2 FEET BUILDING TO 3 TO 4 FEET
LATE IN THE AFTERNOON.
TONIGHT
SOUTH WIND 15 TO 25 KNOTS BECOMING 15 TO 20 KNOTS LATE
IN THE EVENING, THEN BECOMING SOUTH 15 TO 20 KNOTS AFTER
MIDNIGHT. MOSTLY CLOUDY. WAVES 3 TO 5 FEET BUILDING TO 4 TO
6 FEET LATE IN THE EVENING, THEN SUBSIDING TO 3 TO 5 FEET AFTER
MIDNIGHT SUBSIDING TO 3 TO 4 FEET EARLY IN THE MORNING. A SMALL
CRAFT ADVISORY MAY BE NEEDED.
TUESDAY
SOUTH WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND
20 KNOTS VEERING SOUTHWEST LATE IN THE MORNING, THEN BACKING
SOUTH EARLY IN THE AFTERNOON BACKING SOUTHEAST LATE IN THE
AFTERNOON. MOSTLY SUNNY. WAVES 3 TO 4 FEET SUBSIDING TO 1 TO
3 FEET LATE IN THE AFTERNOON.
TUESDAY NIGHT
EAST WIND 5 TO 10 KNOTS BECOMING NORTHEAST 10 TO
15 KNOTS IN THE LATE EVENING AND EARLY MORNING, THEN BECOMING
NORTH 5 TO 10 KNOTS EARLY IN THE MORNING. MOSTLY CLEAR. WAVES
1 TO 2 FEET.
LMZ644-202100-
PORT WASHINGTON TO NORTH POINT LIGHT WI-
310 AM CDT MON APR 20 2026
EARLY THIS MORNING
NORTHEAST WIND 5 TO 10 KNOTS VEERING EAST
EARLY IN THE MORNING. CLEAR. WAVES 1 TO 2 FEET.
TODAY
SOUTHEAST WIND 5 TO 10 KNOTS RISING TO 10 TO 15 KNOTS IN
THE LATE MORNING AND EARLY AFTERNOON, THEN RISING TO 15 TO
20 KNOTS LATE IN THE AFTERNOON. SUNNY. WAVES 1 TO 2 FEET BUILDING
TO 2 TO 4 FEET LATE IN THE AFTERNOON.
TONIGHT
SOUTH WIND 15 TO 20 KNOTS EASING TO 10 TO 15 KNOTS
EARLY IN THE MORNING. MOSTLY CLOUDY. WAVES 3 TO 4 FEET.
TUESDAY
SOUTH WIND 10 TO 15 KNOTS VEERING SOUTHWEST LATE IN
THE MORNING, THEN BECOMING SOUTHWEST 10 TO 15 KNOTS EARLY IN THE
AFTERNOON BACKING SOUTHEAST LATE IN THE AFTERNOON. PARTLY SUNNY.
WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 2 FEET IN THE LATE MORNING
AND AFTERNOON.
TUESDAY NIGHT
EAST WIND 5 TO 10 KNOTS BACKING NORTH AFTER
MIDNIGHT. PARTLY CLOUDY. WAVES 1 TO 2 FEET.
LMZ645-202100-
NORTH POINT LIGHT TO WIND POINT WI-
310 AM CDT MON APR 20 2026
EARLY THIS MORNING
NORTHEAST WIND 5 TO 10 KNOTS VEERING EAST
EARLY IN THE MORNING. CLEAR. WAVES 1 TO 3 FEET.
TODAY
SOUTHEAST WIND 5 TO 10 KNOTS RISING TO 10 TO 15 KNOTS
WITH GUSTS TO AROUND 20 KNOTS IN THE AFTERNOON. SUNNY. WAVES 1 TO
3 FEET.
TONIGHT
SOUTH WIND 15 TO 20 KNOTS. MOSTLY CLOUDY. WAVES 2 TO
4 FEET.
TUESDAY
SOUTHWEST WIND 10 TO 20 KNOTS BECOMING 10 TO 15 KNOTS
IN THE LATE MORNING AND EARLY AFTERNOON, THEN BACKING SOUTH LATE
IN THE AFTERNOON. PARTLY SUNNY. WAVES 2 TO 4 FEET SUBSIDING TO
1 TO 2 FEET IN THE AFTERNOON.
TUESDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS VEERING NORTHWEST
LATE IN THE EVENING, THEN VEERING NORTH AFTER MIDNIGHT BECOMING
NORTH 5 TO 10 KNOTS EARLY IN THE MORNING. PARTLY CLOUDY. WAVES
AROUND 1 FOOT.
LMZ646-202100-
WIND POINT WI TO WINTHROP HARBOR IL-
310 AM CDT MON APR 20 2026
EARLY THIS MORNING
NORTHEAST WIND 5 TO 10 KNOTS VEERING EAST
EARLY IN THE MORNING. CLEAR. WAVES 1 TO 2 FEET.
TODAY
EAST WIND 5 TO 10 KNOTS VEERING SOUTHEAST LATE IN THE
MORNING, THEN RISING TO 10 TO 15 KNOTS IN THE AFTERNOON. SUNNY.
WAVES 1 TO 3 FEET.
TONIGHT
SOUTHEAST WIND 10 TO 15 KNOTS VEERING SOUTH WITH GUSTS
TO AROUND 20 KNOTS LATE IN THE EVENING, THEN BECOMING SOUTH 10 TO
15 KNOTS WITH GUSTS TO AROUND 20 KNOTS AFTER MIDNIGHT RISING TO
15 TO 20 KNOTS EARLY IN THE MORNING. MOSTLY CLOUDY. WAVES 1 TO
3 FEET BUILDING TO 2 TO 4 FEET IN THE LATE EVENING AND OVERNIGHT.
TUESDAY
SOUTHWEST WIND 15 TO 20 KNOTS EASING TO 10 TO 15 KNOTS
WITH GUSTS TO AROUND 20 KNOTS LATE IN THE MORNING, THEN BECOMING
SOUTHWEST 10 TO 15 KNOTS IN THE AFTERNOON. PARTLY SUNNY. WAVES
2 TO 4 FEET SUBSIDING TO 1 TO 2 FEET IN THE LATE MORNING AND
AFTERNOON.
TUESDAY NIGHT
SOUTHWEST WIND 5 TO 10 KNOTS VEERING NORTH EARLY
IN THE MORNING. PARTLY CLOUDY. WAVES AROUND 1 FOOT.
SEE LAKE MICHIGAN OPEN WATERS FORECAST FOR WEDNESDAY THROUGH FRIDAY.
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