497
FZUS53 KAPX 190218
NSHAPX
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE GAYLORD MI
1018 PM 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.
LSZ321-191030-
WHITEFISH BAY (U.S. PORTION)/WHITEFISH POINT TO POINT IROQUOIS MI-
1018 PM EDT MON MAY 18 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH
TUESDAY EVENING...
OVERNIGHT
SOUTHEAST WIND 10 TO 15 KNOTS. ISOLATED SHOWERS AND
THUNDERSTORMS EARLY IN THE EVENING, THEN NUMEROUS SHOWERS AND
SCATTERED THUNDERSTORMS AFTER MIDNIGHT. WAVES 2 FEET OR LESS.
TUESDAY
SOUTHWEST WIND 15 TO 25 KNOTS. NUMEROUS SHOWERS AND
ISOLATED THUNDERSTORMS. WAVES 4 TO 6 FEET.
TUESDAY NIGHT
NORTHWEST WIND 15 TO 25 KNOTS. MOSTLY CLOUDY.
WAVES 4 TO 7 FEET.
WEDNESDAY
NORTHWEST WIND 10 TO 20 KNOTS. MOSTLY SUNNY. WAVES
4 TO 6 FEET.
WINDS AND WAVES HIGHER IN THE VICINITY OF THUNDERSTORMS.
SEE THE OPEN LAKES FORECAST FOR DAYS 3 THROUGH 5.
LSZ322-191030-
ST. MARYS RIVER POINT IROQUOIS TO E. POTAGANNISSING BAY-
1018 PM EDT MON MAY 18 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH
TUESDAY EVENING...
OVERNIGHT
SOUTHEAST WIND 10 TO 15 KNOTS. ISOLATED SHOWERS AND
THUNDERSTORMS EARLY IN THE EVENING, THEN SCATTERED SHOWERS AND
THUNDERSTORMS AFTER MIDNIGHT.
TUESDAY
SOUTHWEST WIND 15 TO 20 KNOTS. NUMEROUS SHOWERS AND
ISOLATED THUNDERSTORMS.
TUESDAY NIGHT
NORTHWEST WIND 15 TO 25 KNOTS. MOSTLY CLOUDY.
WEDNESDAY
NORTHWEST WIND 15 TO 20 KNOTS. MOSTLY SUNNY.
WINDS HIGHER IN THE VICINITY OF THUNDERSTORMS.
SEE THE OPEN LAKES FORECAST FOR DAYS 3 THROUGH 5.
LMZ341-191030-
SEUL CHOIX POINT TO 5NM WEST OF MACKINAC BRIDGE-
1018 PM EDT MON MAY 18 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING
OVERNIGHT
SOUTHEAST WIND 5 TO 10 KNOTS BECOMING SOUTH 10 TO
20 KNOTS AFTER MIDNIGHT. ISOLATED SHOWERS AND THUNDERSTORMS EARLY
IN THE EVENING, THEN SCATTERED SHOWERS AND THUNDERSTORMS AFTER
MIDNIGHT. WAVES 2 FEET OR LESS BUILDING TO 2 TO 4 FEET AFTER
MIDNIGHT.
TUESDAY
SOUTHWEST WIND 15 TO 25 KNOTS. SCATTERED SHOWERS AND
ISOLATED THUNDERSTORMS. WAVES 4 TO 6 FEET.
TUESDAY NIGHT
NORTHWEST WIND 10 TO 20 KNOTS. MOSTLY CLOUDY.
WAVES 2 TO 4 FEET.
WEDNESDAY
NORTHWEST WIND 10 TO 15 KNOTS. MOSTLY SUNNY. WAVES
2 TO 3 FEET.
WINDS AND WAVES HIGHER IN THE VICINITY OF THUNDERSTORMS.
SEE THE OPEN LAKES FORECAST FOR DAYS 3 THROUGH 5.
LMZ342-191030-
NORWOOD MI TO 5NM WEST OF MACKINAC BRIDGE INCLUDING LITTLE
TRAVERSE BAY-
1018 PM EDT MON MAY 18 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING
OVERNIGHT
SOUTH WIND 10 TO 20 KNOTS. ISOLATED SHOWERS EARLY IN
THE EVENING. ISOLATED THUNDERSTORMS THROUGH THE NIGHT. SCATTERED
SHOWERS AFTER MIDNIGHT. WAVES 2 FEET OR LESS BUILDING TO 2 TO
3 FEET AFTER MIDNIGHT.
TUESDAY
SOUTHWEST WIND 15 TO 25 KNOTS. SCATTERED SHOWERS AND
ISOLATED THUNDERSTORMS. WAVES 3 TO 5 FEET.
TUESDAY NIGHT
NORTHWEST WIND 10 TO 20 KNOTS. MOSTLY CLOUDY.
WAVES 2 TO 4 FEET.
WEDNESDAY
NORTHWEST WIND 10 TO 15 KNOTS. MOSTLY SUNNY. WAVES
2 TO 4 FEET.
WINDS AND WAVES HIGHER IN THE VICINITY OF THUNDERSTORMS.
SEE THE OPEN LAKES FORECAST FOR DAYS 3 THROUGH 5.
LMZ323-191030-
GRAND TRAVERSE BAY SOUTH OF A LINE GRAND TRAVERSE LIGHT TO
NORWOOD MI-
1018 PM EDT MON MAY 18 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING
OVERNIGHT
SOUTH WIND 10 TO 20 KNOTS. SCATTERED SHOWERS AND
ISOLATED THUNDERSTORMS AFTER MIDNIGHT. WAVES 2 FEET OR LESS
BUILDING TO 2 TO 3 FEET AFTER MIDNIGHT.
TUESDAY
SOUTHWEST WIND 10 TO 20 KNOTS. SCATTERED SHOWERS AND
ISOLATED THUNDERSTORMS. WAVES 2 TO 4 FEET.
TUESDAY NIGHT
NORTH WIND 10 TO 20 KNOTS. MOSTLY CLOUDY. WAVES
2 TO 3 FEET.
WEDNESDAY
NORTHWEST WIND 10 TO 15 KNOTS. MOSTLY SUNNY. WAVES
2 TO 3 FEET.
WINDS AND WAVES HIGHER IN THE VICINITY OF THUNDERSTORMS.
SEE THE OPEN LAKES FORECAST FOR DAYS 3 THROUGH 5.
LMZ344-345-191030-
SLEEPING BEAR POINT TO GRAND TRAVERSE LIGHT MI-
POINT BETSIE TO SLEEPING BEAR POINT MI-
1018 PM EDT MON MAY 18 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING
OVERNIGHT
SOUTH WIND 10 TO 20 KNOTS. ISOLATED SHOWERS AND
THUNDERSTORMS EARLY IN THE EVENING, THEN NUMEROUS SHOWERS AND
SCATTERED THUNDERSTORMS AFTER MIDNIGHT. WAVES 2 TO 3 FEET
BUILDING TO 3 TO 5 FEET AFTER MIDNIGHT.
TUESDAY
SOUTHWEST WIND 15 TO 20 KNOTS. SCATTERED SHOWERS AND
ISOLATED THUNDERSTORMS. WAVES 3 TO 5 FEET.
TUESDAY NIGHT
NORTH WIND 10 TO 15 KNOTS. MOSTLY CLOUDY. WAVES
2 TO 3 FEET.
WEDNESDAY
NORTH WIND 10 TO 15 KNOTS. MOSTLY SUNNY. WAVES 2 TO
3 FEET.
WINDS AND WAVES HIGHER IN THE VICINITY OF THUNDERSTORMS.
SEE THE OPEN LAKES FORECAST FOR DAYS 3 THROUGH 5.
LMZ346-191030-
MANISTEE TO POINT BETSIE MI-
1018 PM EDT MON MAY 18 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING
OVERNIGHT
SOUTH WIND 10 TO 20 KNOTS. SCATTERED SHOWERS EARLY
IN THE EVENING. SCATTERED THUNDERSTORMS THROUGH THE NIGHT.
NUMEROUS SHOWERS AFTER MIDNIGHT. WAVES 2 TO 4 FEET BUILDING TO
3 TO 5 FEET AFTER MIDNIGHT.
TUESDAY
SOUTHWEST WIND 10 TO 20 KNOTS. SCATTERED SHOWERS AND
ISOLATED THUNDERSTORMS. WAVES 4 TO 6 FEET.
TUESDAY NIGHT
NORTH WIND 10 TO 15 KNOTS. MOSTLY CLOUDY. WAVES
2 TO 4 FEET.
WEDNESDAY
NORTH WIND 10 TO 15 KNOTS. SUNNY. WAVES 2 TO 3 FEET.
WINDS AND WAVES HIGHER IN THE VICINITY OF THUNDERSTORMS.
SEE THE OPEN LAKES FORECAST FOR DAYS 3 THROUGH 5.
LHZ345-191030-
STRAITS OF MACKINAC WITHIN 5 NM OF MACKINAC BRIDGE INCLUDING
MACKINAC ISLAND-
1018 PM EDT MON MAY 18 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH
TUESDAY EVENING...
OVERNIGHT
SOUTH WIND 15 TO 20 KNOTS. ISOLATED SHOWERS EARLY IN
THE EVENING. ISOLATED THUNDERSTORMS THROUGH THE NIGHT. SCATTERED
SHOWERS AFTER MIDNIGHT. WAVES 2 FEET OR LESS.
TUESDAY
SOUTHWEST WIND 15 TO 25 KNOTS. SCATTERED SHOWERS AND
ISOLATED THUNDERSTORMS. WAVES 2 TO 4 FEET.
TUESDAY NIGHT
NORTHWEST WIND 10 TO 20 KNOTS. MOSTLY CLOUDY.
WAVES 2 TO 4 FEET.
WEDNESDAY
NORTHWEST WIND 10 TO 20 KNOTS. MOSTLY SUNNY. WAVES
2 TO 3 FEET.
WINDS AND WAVES HIGHER IN THE VICINITY OF THUNDERSTORMS.
SEE THE OPEN LAKES FORECAST FOR DAYS 3 THROUGH 5.
LHZ346-191030-
ST IGNACE TO FALSE DETOUR CHANNEL-
1018 PM EDT MON MAY 18 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH
TUESDAY EVENING...
OVERNIGHT
SOUTH WIND 15 TO 20 KNOTS. ISOLATED SHOWERS AND
THUNDERSTORMS EARLY IN THE EVENING, THEN SCATTERED SHOWERS AND
THUNDERSTORMS AFTER MIDNIGHT. WAVES 2 FEET OR LESS.
TUESDAY
SOUTHWEST WIND 15 TO 25 KNOTS. SCATTERED SHOWERS AND
ISOLATED THUNDERSTORMS. WAVES 3 TO 5 FEET.
TUESDAY NIGHT
NORTHWEST WIND 15 TO 25 KNOTS. MOSTLY CLOUDY.
WAVES 3 TO 5 FEET.
WEDNESDAY
NORTHWEST WIND 15 TO 25 KNOTS. SUNNY. WAVES 3 TO
5 FEET.
WINDS AND WAVES HIGHER IN THE VICINITY OF THUNDERSTORMS.
SEE THE OPEN LAKES FORECAST FOR DAYS 3 THROUGH 5.
LHZ347-191030-
5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LIGHT MI INCLUDING
BOIS BLANC ISLAND-
1018 PM EDT MON MAY 18 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH
TUESDAY EVENING...
OVERNIGHT
SOUTH WIND 15 TO 20 KNOTS. ISOLATED SHOWERS EARLY IN
THE EVENING. ISOLATED THUNDERSTORMS THROUGH THE NIGHT. SCATTERED
SHOWERS AFTER MIDNIGHT. WAVES 2 FEET OR LESS.
TUESDAY
SOUTHWEST WIND 10 TO 20 KNOTS. SCATTERED SHOWERS AND
ISOLATED THUNDERSTORMS. WAVES 3 TO 5 FEET.
TUESDAY NIGHT
NORTHWEST WIND 15 TO 25 KNOTS. MOSTLY CLOUDY.
WAVES 5 TO 8 FEET.
WEDNESDAY
NORTHWEST WIND 15 TO 25 KNOTS. SUNNY. WAVES 5 TO
8 FEET.
WINDS AND WAVES HIGHER IN THE VICINITY OF THUNDERSTORMS.
SEE THE OPEN LAKES FORECAST FOR DAYS 3 THROUGH 5.
LHZ348-191030-
PRESQUE ISLE LIGHT TO STURGEON PT MI INCLUDING THUNDER BAY
NATIONAL MARINE SANCTUARY-
1018 PM EDT MON MAY 18 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH
TUESDAY EVENING...
OVERNIGHT
SOUTH WIND 10 TO 15 KNOTS. ISOLATED SHOWERS THROUGH
THE NIGHT. ISOLATED THUNDERSTORMS AFTER MIDNIGHT. WAVES 2 TO
4 FEET.
TUESDAY
SOUTHWEST WIND 10 TO 20 KNOTS. SCATTERED SHOWERS AND
ISOLATED THUNDERSTORMS. WAVES 3 TO 5 FEET.
TUESDAY NIGHT
NORTHWEST WIND 15 TO 25 KNOTS. MOSTLY CLOUDY.
WAVES 5 TO 8 FEET.
WEDNESDAY
NORTHWEST WIND 15 TO 25 KNOTS. SUNNY. WAVES 5 TO
8 FEET.
WINDS AND WAVES HIGHER IN THE VICINITY OF THUNDERSTORMS.
SEE THE OPEN LAKES FORECAST FOR DAYS 3 THROUGH 5.
LHZ349-191030-
STURGEON PT TO ALABASTER MI-
1018 PM EDT MON MAY 18 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH
TUESDAY EVENING...
OVERNIGHT
SOUTH WIND 10 TO 20 KNOTS. ISOLATED SHOWERS THROUGH
THE NIGHT. ISOLATED THUNDERSTORMS AFTER MIDNIGHT. WAVES 2 TO
4 FEET.
TUESDAY
SOUTHWEST WIND 15 TO 25 KNOTS. SCATTERED SHOWERS AND
ISOLATED THUNDERSTORMS. WAVES 3 TO 5 FEET.
TUESDAY NIGHT
NORTHWEST WIND 10 TO 20 KNOTS. MOSTLY CLOUDY.
WAVES 2 TO 4 FEET.
WEDNESDAY
NORTH WIND 10 TO 20 KNOTS. SUNNY. WAVES 2 TO 3 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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