494
FZUS53 KAPX 180727
NSHAPX
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE GAYLORD MI
327 AM EDT MON MAY 18 2026
FOR WATERS WITHIN FIVE NAUTICAL MILES OF SHORE ON LAKES HURON...
MICHIGAN AND 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.
LSZ321-181530-
WHITEFISH BAY (U.S. PORTION)/WHITEFISH POINT TO POINT IROQUOIS MI-
327 AM EDT MON MAY 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON EDT TODAY
TODAY
SOUTHEAST WIND 10 TO 15 KNOTS GUSTING TO 25
KNOTS, BECOMING SOUTHWEST IN THE AFTERNOON. CHANCE OF
THUNDERSTORMS EARLY IN THE MORNING. CHANCE OF SHOWERS THROUGH THE
DAY. WAVES 2 TO 4 FEET SUBSIDING TO 2 FEET OR LESS IN THE
AFTERNOON.
TONIGHT
SOUTH WIND 10 TO 15 KNOTS. RAIN SHOWERS LIKELY AND A
CHANCE OF THUNDERSTORMS. WAVES 2 FEET OR LESS.
TUESDAY
SOUTHWEST WIND 15 TO 25 KNOTS. RAIN SHOWERS. WAVES
4 TO 7 FEET.
TUESDAY NIGHT
NORTHWEST WIND 15 TO 25 KNOTS. MOSTLY CLOUDY.
WAVES 5 TO 8 FEET.
WINDS AND WAVES HIGHER IN THE VICINITY OF THUNDERSTORMS.
SEE THE OPEN LAKES FORECAST FOR DAYS 3 THROUGH 5.
LSZ322-181530-
ST. MARYS RIVER POINT IROQUOIS TO E. POTAGANNISSING BAY-
327 AM EDT MON MAY 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON EDT TODAY
TODAY
SOUTHEAST WIND 10 TO 15 KNOTS GUSTING TO 25
KNOTS, BECOMING SOUTHWEST 5 TO 10 KNOTS IN THE AFTERNOON. SLIGHT
CHANCE OF THUNDERSTORMS EARLY IN THE MORNING. CHANCE OF SHOWERS
THROUGH THE DAY. CHANCE OF THUNDERSTORMS IN THE MORNING.
TONIGHT
SOUTH WIND 5 TO 10 KNOTS. RAIN SHOWERS LIKELY AND A
CHANCE OF THUNDERSTORMS.
TUESDAY
SOUTHWEST WIND 15 TO 20 KNOTS. RAIN SHOWERS.
TUESDAY NIGHT
NORTHWEST WIND 10 TO 20 KNOTS. MOSTLY CLOUDY.
WINDS HIGHER IN THE VICINITY OF THUNDERSTORMS.
SEE THE OPEN LAKES FORECAST FOR DAYS 3 THROUGH 5.
LMZ341-181530-
SEUL CHOIX POINT TO 5NM WEST OF MACKINAC BRIDGE-
327 AM EDT MON MAY 18 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
TODAY
SOUTHEAST WIND 10 TO 15 KNOTS GUSTING TO 25
KNOTS, BECOMING SOUTHWEST EARLY IN THE EVENING. CHANCE OF
THUNDERSTORMS EARLY IN THE MORNING. CHANCE OF SHOWERS THROUGH THE
DAY. WAVES 2 TO 3 FEET BUILDING TO 3 TO 5 FEET IN THE MORNING.
TONIGHT
SOUTH WIND 15 TO 20 KNOTS. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 4 TO 6 FEET.
TUESDAY
SOUTHWEST WIND 15 TO 25 KNOTS. RAIN SHOWERS. WAVES
5 TO 8 FEET.
TUESDAY NIGHT
NORTHWEST WIND 10 TO 20 KNOTS. MOSTLY CLOUDY.
WAVES 3 TO 5 FEET.
WINDS AND WAVES HIGHER IN THE VICINITY OF THUNDERSTORMS.
SEE THE OPEN LAKES FORECAST FOR DAYS 3 THROUGH 5.
LMZ342-181530-
NORWOOD MI TO 5NM WEST OF MACKINAC BRIDGE INCLUDING LITTLE
TRAVERSE BAY-
327 AM EDT MON MAY 18 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
TODAY
SOUTHEAST WIND 10 TO 15 KNOTS GUSTING TO 25
KNOTS, BECOMING SOUTHWEST IN THE AFTERNOON. SLIGHT CHANCE OF
THUNDERSTORMS EARLY IN THE MORNING. CHANCE OF SHOWERS THROUGH THE
DAY. CHANCE OF THUNDERSTORMS IN THE MORNING. WAVES 2 FEET OR LESS
BUILDING TO 2 TO 3 FEET IN THE MORNING.
TONIGHT
SOUTH WIND 15 TO 20 KNOTS. RAIN SHOWERS LIKELY AND A
CHANCE OF THUNDERSTORMS. WAVES 2 TO 3 FEET.
TUESDAY
SOUTHWEST WIND 15 TO 25 KNOTS. CHANCE OF SHOWERS.
WAVES 4 TO 6 FEET.
TUESDAY NIGHT
NORTHWEST WIND 10 TO 20 KNOTS. MOSTLY CLOUDY.
WAVES 2 TO 4 FEET.
WINDS AND WAVES HIGHER IN THE VICINITY OF THUNDERSTORMS.
SEE THE OPEN LAKES FORECAST FOR DAYS 3 THROUGH 5.
LMZ323-181530-
GRAND TRAVERSE BAY SOUTH OF A LINE GRAND TRAVERSE LIGHT TO
NORWOOD MI-
327 AM EDT MON MAY 18 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
TODAY
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 30 KNOTS.
CHANCE OF THUNDERSTORMS EARLY IN THE MORNING. CHANCE OF SHOWERS
THROUGH THE DAY. SLIGHT CHANCE OF THUNDERSTORMS IN THE MORNING.
WAVES 2 TO 3 FEET.
TONIGHT
SOUTH WIND 15 TO 20 KNOTS. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 2 TO 3 FEET.
TUESDAY
SOUTHWEST WIND 10 TO 20 KNOTS. RAIN SHOWERS LIKELY.
WAVES 2 TO 4 FEET.
TUESDAY NIGHT
NORTHWEST WIND 15 TO 20 KNOTS. MOSTLY CLOUDY.
WAVES 2 TO 4 FEET.
WINDS AND WAVES HIGHER IN THE VICINITY OF THUNDERSTORMS.
SEE THE OPEN LAKES FORECAST FOR DAYS 3 THROUGH 5.
LMZ344-345-181530-
SLEEPING BEAR POINT TO GRAND TRAVERSE LIGHT MI-
POINT BETSIE TO SLEEPING BEAR POINT MI-
327 AM EDT MON MAY 18 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
TODAY
SOUTHWEST WIND 15 TO 25 KNOTS. CHANCE OF THUNDERSTORMS
EARLY IN THE MORNING. CHANCE OF SHOWERS THROUGH THE DAY. SLIGHT
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. WAVES 2 TO 3 FEET
BUILDING TO 2 TO 4 FEET IN THE MORNING.
TONIGHT
SOUTH WIND 15 TO 20 KNOTS. RAIN SHOWERS LIKELY AND A
CHANCE OF THUNDERSTORMS. WAVES 3 TO 5 FEET.
TUESDAY
SOUTHWEST WIND 15 TO 25 KNOTS. RAIN SHOWERS LIKELY.
WAVES 4 TO 7 FEET.
TUESDAY NIGHT
NORTHWEST WIND 10 TO 15 KNOTS. MOSTLY CLOUDY.
WAVES 3 TO 5 FEET.
WINDS AND WAVES HIGHER IN THE VICINITY OF THUNDERSTORMS.
SEE THE OPEN LAKES FORECAST FOR DAYS 3 THROUGH 5.
LMZ346-181530-
MANISTEE TO POINT BETSIE MI-
327 AM EDT MON MAY 18 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
TODAY
SOUTHWEST WIND 15 TO 25 KNOTS BECOMING SOUTH 5 TO 15
KNOTS EARLY IN THE EVENING. CHANCE OF THUNDERSTORMS EARLY IN THE
MORNING. CHANCE OF SHOWERS THROUGH THE DAY. SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. WAVES 2 TO 4 FEET BUILDING TO 3 TO
5 FEET IN THE MORNING.
TONIGHT
SOUTH WIND 10 TO 20 KNOTS. RAIN SHOWERS LIKELY AND A
CHANCE OF THUNDERSTORMS. WAVES 4 TO 6 FEET.
TUESDAY
SOUTHWEST WIND 15 TO 25 KNOTS. RAIN SHOWERS LIKELY.
WAVES 5 TO 8 FEET.
TUESDAY NIGHT
NORTH WIND 10 TO 15 KNOTS. MOSTLY CLOUDY. WAVES
4 TO 6 FEET.
WINDS AND WAVES HIGHER IN THE VICINITY OF THUNDERSTORMS.
SEE THE OPEN LAKES FORECAST FOR DAYS 3 THROUGH 5.
LHZ345-181530-
STRAITS OF MACKINAC WITHIN 5 NM OF MACKINAC BRIDGE INCLUDING
MACKINAC ISLAND-
327 AM EDT MON MAY 18 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EDT EARLY THIS
MORNING...
TODAY
SOUTHEAST WIND 10 TO 15 KNOTS GUSTING TO 25
KNOTS, BECOMING WEST IN THE AFTERNOON. SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS EARLY IN THE MORNING, THEN CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE MORNING. WAVES 2 TO 3 FEET.
TONIGHT
SOUTH WIND 5 TO 10 KNOTS. RAIN SHOWERS LIKELY AND A
CHANCE OF THUNDERSTORMS. WAVES 2 FEET OR LESS.
TUESDAY
SOUTHWEST WIND 10 TO 20 KNOTS. RAIN SHOWERS. WAVES
2 TO 4 FEET.
TUESDAY NIGHT
NORTHWEST WIND 10 TO 20 KNOTS. MOSTLY CLOUDY.
WAVES 2 TO 4 FEET.
WINDS AND WAVES HIGHER IN THE VICINITY OF THUNDERSTORMS.
SEE THE OPEN LAKES FORECAST FOR DAYS 3 THROUGH 5.
LHZ346-181530-
ST IGNACE TO FALSE DETOUR CHANNEL-
327 AM EDT MON MAY 18 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EDT EARLY THIS
MORNING...
TODAY
SOUTHEAST WIND 10 TO 15 KNOTS BECOMING SOUTHWEST EARLY
IN THE EVENING. SLIGHT CHANCE OF THUNDERSTORMS EARLY IN THE
MORNING. CHANCE OF SHOWERS THROUGH THE DAY. CHANCE OF
THUNDERSTORMS IN THE MORNING. WAVES 2 TO 4 FEET.
TONIGHT
SOUTH WIND 10 TO 15 KNOTS. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 2 TO 3 FEET.
TUESDAY
SOUTHWEST WIND 15 TO 25 KNOTS. RAIN SHOWERS. WAVES
4 TO 6 FEET.
TUESDAY NIGHT
NORTHWEST WIND 15 TO 25 KNOTS. MOSTLY CLOUDY.
WAVES 4 TO 6 FEET.
WINDS AND WAVES HIGHER IN THE VICINITY OF THUNDERSTORMS.
SEE THE OPEN LAKES FORECAST FOR DAYS 3 THROUGH 5.
LHZ347-181530-
5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LIGHT MI INCLUDING
BOIS BLANC ISLAND-
327 AM EDT MON MAY 18 2026
TODAY
SOUTHEAST WIND 10 TO 15 KNOTS BECOMING SOUTHWEST IN THE
AFTERNOON. SLIGHT CHANCE OF SHOWERS EARLY IN THE MORNING, THEN
CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE
MORNING. RAIN SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. WAVES 2 TO 4 FEET SUBSIDING TO 2 TO 3 FEET IN THE
AFTERNOON.
TONIGHT
SOUTH WIND 5 TO 10 KNOTS. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 2 FEET OR LESS.
TUESDAY
SOUTHWEST WIND 10 TO 20 KNOTS. RAIN SHOWERS. WAVES
3 TO 5 FEET.
TUESDAY NIGHT
NORTHWEST WIND 15 TO 25 KNOTS. MOSTLY CLOUDY.
WAVES 5 TO 8 FEET.
WINDS AND WAVES HIGHER IN THE VICINITY OF THUNDERSTORMS.
SEE THE OPEN LAKES FORECAST FOR DAYS 3 THROUGH 5.
LHZ348-181530-
PRESQUE ISLE LIGHT TO STURGEON PT MI INCLUDING THUNDER BAY
NATIONAL MARINE SANCTUARY-
327 AM EDT MON MAY 18 2026
TODAY
SOUTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTH 10 TO
20 KNOTS IN THE MORNING. SLIGHT CHANCE OF SHOWERS EARLY IN THE
MORNING. RAIN SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. WAVES 2 TO 3 FEET BUILDING TO 3 TO 5 FEET IN THE
MORNING.
TONIGHT
SOUTH WIND 10 TO 15 KNOTS. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 2 TO 4 FEET.
TUESDAY
SOUTHWEST WIND 10 TO 20 KNOTS. CHANCE OF SHOWERS.
WAVES 3 TO 5 FEET.
TUESDAY NIGHT
NORTHWEST WIND 15 TO 25 KNOTS. MOSTLY CLOUDY.
WAVES 5 TO 8 FEET.
WINDS AND WAVES HIGHER IN THE VICINITY OF THUNDERSTORMS.
SEE THE OPEN LAKES FORECAST FOR DAYS 3 THROUGH 5.
LHZ349-181530-
STURGEON PT TO ALABASTER MI-
327 AM EDT MON MAY 18 2026
TODAY
SOUTH WIND 10 TO 20 KNOTS. CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. WAVES 2 TO 4 FEET.
TONIGHT
SOUTHWEST WIND 10 TO 20 KNOTS. RAIN SHOWERS LIKELY AND
SLIGHT CHANCE OF THUNDERSTORMS. WAVES 2 TO 4 FEET.
TUESDAY
SOUTHWEST WIND 15 TO 25 KNOTS. CHANCE OF SHOWERS.
WAVES 4 TO 6 FEET.
TUESDAY NIGHT
NORTHWEST WIND 10 TO 20 KNOTS. MOSTLY CLOUDY.
WAVES 2 TO 4 FEET.
WINDS AND WAVES HIGHER IN THE VICINITY OF THUNDERSTORMS.
SEE THE OPEN LAKES FORECAST FOR DAYS 3 THROUGH 5.
SJC
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