509
FZUS53 KAPX 200517
NSHAPX
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE GAYLORD MI
117 AM EDT MON JUL 20 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.
LSZ321-201330-
WHITEFISH BAY (U.S. PORTION)/WHITEFISH POINT TO POINT IROQUOIS MI-
117 AM EDT MON JUL 20 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH
TUESDAY MORNING...
TODAY
SOUTH WIND 10 TO 25 KNOTS. PATCHY SMOKE THROUGH THE DAY.
CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS EARLY IN THE
MORNING. SLIGHT CHANCE OF SHOWERS IN THE MORNING, THEN CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. WAVES 2 FEET OR LESS
BUILDING TO 2 TO 4 FEET IN THE AFTERNOON.
TONIGHT
SOUTHWEST WIND 15 TO 20 KNOTS. PATCHY SMOKE. SHOWERS
AND A CHANCE OF THUNDERSTORMS. WAVES 2 TO 4 FEET.
TUESDAY
NORTHWEST WIND UP TO 30 KNOTS. CHANCE OF SHOWERS.
WAVES 7 TO 10 FEET.
TUESDAY NIGHT
NORTHWEST WIND UP TO 30 KNOTS WITH GUSTS TO
AROUND 35 KNOTS. PARTLY CLOUDY. WAVES 7 TO 10 FEET.
WINDS AND WAVES HIGHER IN THE VICINITY OF THUNDERSTORMS.
SEE THE OPEN LAKES FORECAST FOR DAYS 3 THROUGH 5.
LSZ322-201330-
ST. MARYS RIVER POINT IROQUOIS TO E. POTAGANNISSING BAY-
117 AM EDT MON JUL 20 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH
TUESDAY MORNING...
TODAY
SOUTH WIND 15 TO 20 KNOTS GUSTING TO 25 KNOTS. PATCHY
SMOKE THROUGH THE DAY. CHANCE OF SHOWERS EARLY IN THE MORNING.
SLIGHT CHANCE OF SHOWERS IN THE MORNING. SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON.
TONIGHT
SOUTHWEST WIND 10 TO 15 KNOTS. SHOWERS AND A CHANCE OF
THUNDERSTORMS.
TUESDAY
NORTHWEST WIND 15 TO 25 KNOTS. MOSTLY CLOUDY.
TUESDAY NIGHT
NORTHWEST WIND UP TO 30 KNOTS. MOSTLY CLOUDY.
WINDS HIGHER IN THE VICINITY OF THUNDERSTORMS.
SEE THE OPEN LAKES FORECAST FOR DAYS 3 THROUGH 5.
LMZ341-201330-
SEUL CHOIX POINT TO 5NM WEST OF MACKINAC BRIDGE-
117 AM EDT MON JUL 20 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING
THROUGH TUESDAY MORNING...
TODAY
SOUTHWEST WIND 15 TO 25 KNOTS GUSTING TO 25 KNOTS.
PATCHY SMOKE THROUGH THE DAY. SLIGHT CHANCE OF SHOWERS IN THE
MORNING. CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
WAVES 2 TO 4 FEET BUILDING TO 5 TO 8 FEET IN THE MORNING. WAVES
OCCASIONALLY AROUND 10 FEET.
TONIGHT
SOUTHWEST WIND 15 TO 25 KNOTS. PATCHY SMOKE. SHOWERS
AND A CHANCE OF THUNDERSTORMS. WAVES 5 TO 8 FEET.
TUESDAY
NORTHWEST WIND 15 TO 25 KNOTS WITH GUSTS TO AROUND
35 KNOTS. PARTLY SUNNY. WAVES 4 TO 6 FEET.
TUESDAY NIGHT
NORTHWEST WIND 15 TO 25 KNOTS. PARTLY 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.
LMZ342-201330-
NORWOOD MI TO 5NM WEST OF MACKINAC BRIDGE INCLUDING LITTLE
TRAVERSE BAY-
117 AM EDT MON JUL 20 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING
THROUGH TUESDAY MORNING...
TODAY
SOUTHWEST WIND 15 TO 25 KNOTS. PATCHY SMOKE EARLY IN THE
MORNING. PATCHY SMOKE IN THE AFTERNOON. SLIGHT CHANCE OF SHOWERS
IN THE MORNING. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. WAVES 3 TO 5 FEET BUILDING TO
4 TO 6 FEET IN THE AFTERNOON.
TONIGHT
SOUTHWEST WIND 15 TO 25 KNOTS. PATCHY SMOKE. SHOWERS
AND A CHANCE OF THUNDERSTORMS. WAVES 4 TO 6 FEET.
TUESDAY
NORTHWEST WIND 15 TO 25 KNOTS WITH GUSTS TO AROUND
40 KNOTS. MOSTLY CLOUDY. WAVES 4 TO 7 FEET.
TUESDAY NIGHT
NORTHWEST WIND UP TO 30 KNOTS WITH GUSTS TO
AROUND 40 KNOTS. PARTLY CLOUDY. WAVES 4 TO 7 FEET.
WINDS AND WAVES HIGHER IN THE VICINITY OF THUNDERSTORMS.
SEE THE OPEN LAKES FORECAST FOR DAYS 3 THROUGH 5.
LMZ323-201330-
GRAND TRAVERSE BAY SOUTH OF A LINE GRAND TRAVERSE LIGHT TO
NORWOOD MI-
117 AM EDT MON JUL 20 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING
THROUGH TUESDAY MORNING...
TODAY
SOUTHWEST WIND 15 TO 25 KNOTS DECREASING TO 10 TO
20 KNOTS IN THE AFTERNOON. PATCHY SMOKE IN THE MORNING. SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. WAVES
2 FEET OR LESS BUILDING TO 2 TO 4 FEET IN THE AFTERNOON.
TONIGHT
SOUTHWEST WIND 10 TO 20 KNOTS. PATCHY SMOKE. SHOWERS
LIKELY AND A CHANCE OF THUNDERSTORMS. WAVES 2 TO 4 FEET.
TUESDAY
NORTHWEST WIND 15 TO 25 KNOTS WITH GUSTS TO AROUND
40 KNOTS. CHANCE OF SHOWERS. WAVES 4 TO 7 FEET.
TUESDAY NIGHT
NORTH WIND UP TO 30 KNOTS WITH GUSTS TO AROUND
45 KNOTS. MOSTLY CLOUDY. WAVES 4 TO 7 FEET.
WINDS AND WAVES HIGHER IN THE VICINITY OF THUNDERSTORMS.
SEE THE OPEN LAKES FORECAST FOR DAYS 3 THROUGH 5.
LMZ344-345-201330-
SLEEPING BEAR POINT TO GRAND TRAVERSE LIGHT MI-
POINT BETSIE TO SLEEPING BEAR POINT MI-
117 AM EDT MON JUL 20 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING
THROUGH TUESDAY MORNING...
TODAY
SOUTHWEST WIND 15 TO 25 KNOTS. PATCHY SMOKE IN THE
AFTERNOON. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
AFTERNOON. WAVES 2 FEET OR LESS BUILDING TO 4 TO 6 FEET.
TONIGHT
SOUTHWEST WIND 15 TO 25 KNOTS. PATCHY SMOKE. CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES 4 TO 6 FEET.
TUESDAY
NORTHWEST WIND 15 TO 25 KNOTS WITH GUSTS TO AROUND
40 KNOTS. PARTLY SUNNY. WAVES 4 TO 7 FEET.
TUESDAY NIGHT
NORTH WIND UP TO 30 KNOTS WITH GUSTS TO AROUND
40 KNOTS. PARTLY 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.
LMZ346-201330-
MANISTEE TO POINT BETSIE MI-
117 AM EDT MON JUL 20 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING
THROUGH TUESDAY MORNING...
TODAY
SOUTHWEST WIND 15 TO 25 KNOTS. PATCHY SMOKE IN THE
AFTERNOON. CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS
IN THE AFTERNOON. WAVES 2 FEET OR LESS BUILDING TO 4 TO 6 FEET.
TONIGHT
SOUTHWEST WIND 15 TO 25 KNOTS. PATCHY SMOKE. SHOWERS
LIKELY AND A CHANCE OF THUNDERSTORMS. WAVES 4 TO 7 FEET.
TUESDAY
NORTHWEST WIND 15 TO 25 KNOTS. PATCHY SMOKE. WAVES
4 TO 6 FEET.
TUESDAY NIGHT
NORTH WIND 15 TO 25 KNOTS WITH GUSTS TO AROUND
35 KNOTS. PARTLY 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.
LHZ345-201330-
STRAITS OF MACKINAC WITHIN 5 NM OF MACKINAC BRIDGE INCLUDING
MACKINAC ISLAND-
117 AM EDT MON JUL 20 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING
THROUGH TUESDAY MORNING...
TODAY
SOUTHWEST WIND 15 TO 25 KNOTS. PATCHY SMOKE THROUGH THE
DAY. SLIGHT CHANCE OF SHOWERS IN THE MORNING. CHANCE OF SHOWERS
AND SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. WAVES 2 FEET
OR LESS BUILDING TO 2 TO 4 FEET IN THE MORNING.
TONIGHT
SOUTHWEST WIND 10 TO 20 KNOTS. SHOWERS AND A CHANCE OF
THUNDERSTORMS. WAVES 2 TO 3 FEET.
TUESDAY
NORTHWEST WIND 15 TO 25 KNOTS. MOSTLY CLOUDY. WAVES
4 TO 6 FEET.
TUESDAY NIGHT
NORTHWEST WIND 15 TO 25 KNOTS. PARTLY 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.
LHZ346-201330-
ST IGNACE TO FALSE DETOUR CHANNEL-
117 AM EDT MON JUL 20 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH
TUESDAY MORNING...
TODAY
SOUTHWEST WIND 15 TO 25 KNOTS DECREASING TO 10 TO
20 KNOTS IN THE AFTERNOON. PATCHY SMOKE THROUGH THE DAY. SLIGHT
CHANCE OF SHOWERS THROUGH THE DAY. SLIGHT CHANCE OF THUNDERSTORMS
IN THE AFTERNOON. WAVES 2 TO 3 FEET.
TONIGHT
SOUTHWEST WIND 10 TO 20 KNOTS. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 2 TO 4 FEET.
TUESDAY
NORTHWEST WIND 15 TO 25 KNOTS WITH GUSTS TO AROUND
35 KNOTS. MOSTLY CLOUDY. WAVES 4 TO 6 FEET.
TUESDAY NIGHT
NORTHWEST WIND 15 TO 25 KNOTS WITH GUSTS TO
AROUND 35 KNOTS. PARTLY 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.
LHZ347-201330-
5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LIGHT MI INCLUDING
BOIS BLANC ISLAND-
117 AM EDT MON JUL 20 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH
TUESDAY MORNING...
TODAY
SOUTHWEST WIND 10 TO 20 KNOTS GUSTING TO 25 KNOTS.
PATCHY SMOKE THROUGH THE DAY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. WAVES 2 FEET OR LESS.
TONIGHT
SOUTHWEST WIND 10 TO 20 KNOTS. SHOWERS LIKELY AND A
CHANCE OF THUNDERSTORMS. WAVES 2 TO 3 FEET.
TUESDAY
WEST WIND UP TO 30 KNOTS WITH GUSTS TO AROUND
35 KNOTS. PARTLY SUNNY. WAVES 6 TO 9 FEET.
TUESDAY NIGHT
NORTHWEST WIND UP TO 30 KNOTS WITH GUSTS TO
AROUND 40 KNOTS. MOSTLY CLOUDY. WAVES 6 TO 9 FEET.
WINDS AND WAVES HIGHER IN THE VICINITY OF THUNDERSTORMS.
SEE THE OPEN LAKES FORECAST FOR DAYS 3 THROUGH 5.
LHZ348-201330-
PRESQUE ISLE LIGHT TO STURGEON PT MI INCLUDING THUNDER BAY
NATIONAL MARINE SANCTUARY-
117 AM EDT MON JUL 20 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH
TUESDAY MORNING...
TODAY
SOUTH WIND 10 TO 20 KNOTS GUSTING TO 25 KNOTS. PATCHY
SMOKE IN THE MORNING. WAVES 2 TO 3 FEET BUILDING TO 4 TO 6 FEET IN
THE AFTERNOON.
TONIGHT
SOUTH WIND 10 TO 20 KNOTS. PATCHY SMOKE. CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES 4 TO 6 FEET.
TUESDAY
WEST WIND UP TO 30 KNOTS WITH GUSTS TO AROUND
35 KNOTS. CHANCE OF SHOWERS. WAVES 6 TO 9 FEET.
TUESDAY NIGHT
NORTHWEST WIND UP TO 30 KNOTS WITH GUSTS TO
AROUND 40 KNOTS. MOSTLY CLOUDY. WAVES 7 TO 10 FEET.
WINDS AND WAVES HIGHER IN THE VICINITY OF THUNDERSTORMS.
SEE THE OPEN LAKES FORECAST FOR DAYS 3 THROUGH 5.
LHZ349-201330-
STURGEON PT TO ALABASTER MI-
117 AM EDT MON JUL 20 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH
TUESDAY MORNING...
TODAY
SOUTH WIND 10 TO 20 KNOTS GUSTING TO 25 KNOTS. PATCHY
SMOKE IN THE MORNING. WAVES 2 FEET OR LESS BUILDING TO 3 TO 5 FEET
IN THE AFTERNOON.
TONIGHT
SOUTHWEST WIND 15 TO 25 KNOTS. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 4 TO 6 FEET.
TUESDAY
WEST WIND 15 TO 25 KNOTS. CHANCE OF SHOWERS. WAVES
3 TO 5 FEET.
TUESDAY NIGHT
NORTHWEST WIND UP TO 30 KNOTS WITH GUSTS TO
AROUND 35 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.
SJC
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