614
WHUS73 KAPX 170843
MWWAPX
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE GAYLORD MI
443 AM EDT SAT OCT 17 2026
LHZ345-346-171645-
/O.CAN.KAPX.SC.Y.0093.000000T0000Z-261017T1000Z/
/O.NEW.KAPX.SC.Y.0094.261017T1500Z-261018T0900Z/
/O.NEW.KAPX.GL.A.0011.261018T0900Z-261019T0300Z/
STRAITS OF MACKINAC WITHIN 5 NM OF MACKINAC BRIDGE INCLUDING
MACKINAC ISLAND-ST IGNACE TO FALSE DETOUR CHANNEL-
443 AM EDT SAT OCT 17 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 5 AM
EDT SUNDAY...
...GALE WATCH IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY
EVENING...
* WHAT...FOR THE SMALL CRAFT ADVISORY, HIGHEST GUSTS UP TO 30
KTS FROM THE SOUTHWEST AND HIGHEST WAVES AROUND 6 FEET
EXPECTED. FOR THE GALE WATCH, HIGHEST GUSTS UP TO 40 KTS FROM
THE SOUTHWEST AND HIGHEST WAVES AROUND 6 FEET POSSIBLE.
* WHERE...STRAITS OF MACKINAC WITHIN 5 NM OF MACKINAC BRIDGE
INCLUDING MACKINAC ISLAND AND ST IGNACE TO FALSE DETOUR
CHANNEL.
* WHEN...FOR THE SMALL CRAFT ADVISORY, FROM 11 AM THIS MORNING
TO 5 AM EDT SUNDAY. FOR THE GALE WATCH, FROM LATE TONIGHT
THROUGH SUNDAY EVENING.
* IMPACTS...STRONG WINDS CAN CAUSE HAZARDOUS HIGHEST WAVES WHICH
COULD CAPSIZE OR DAMAGE VESSELS AND REDUCE VISIBILITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MARINERS SHOULD CONSIDER ALTERING PLANS TO AVOID POSSIBLE
HAZARDOUS CONDITIONS. REMAIN IN PORT, SEEK SAFE HARBOR, ALTER
COURSE, AND/OR SECURE THE VESSEL FOR SEVERE WIND AND HIGHEST
WAVES.
LHZ347-348-171645-
/O.CAN.KAPX.SC.Y.0093.000000T0000Z-261017T1000Z/
/O.NEW.KAPX.SC.Y.0094.261017T1500Z-261019T0900Z/
5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LIGHT MI INCLUDING
BOIS BLANC ISLAND-
PRESQUE ISLE LIGHT TO STURGEON PT MI INCLUDING THUNDER BAY
NATIONAL MARINE SANCTUARY-
443 AM EDT SAT OCT 17 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 5 AM
EDT MONDAY...
* WHAT...HIGHEST GUSTS UP TO 30 KTS FROM THE SOUTHWEST AND
HIGHEST WAVES AROUND 5 FEET EXPECTED.
* WHERE...5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LIGHT MI
INCLUDING BOIS BLANC ISLAND AND PRESQUE ISLE LIGHT TO STURGEON
PT MI INCLUDING THUNDER BAY NATIONAL MARINE SANCTUARY.
* WHEN...FROM 11 AM THIS MORNING TO 5 AM EDT MONDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.
LMZ323-341-342-344-345-171645-
/O.NEW.KAPX.SC.Y.0094.261017T0843Z-261018T0900Z/
/O.NEW.KAPX.GL.A.0011.261018T0900Z-261019T0300Z/
GRAND TRAVERSE BAY SOUTH OF A LINE GRAND TRAVERSE LIGHT TO
NORWOOD MI-SEUL CHOIX POINT TO 5NM WEST OF MACKINAC BRIDGE-
NORWOOD MI TO 5NM WEST OF MACKINAC BRIDGE INCLUDING LITTLE
TRAVERSE BAY-SLEEPING BEAR POINT TO GRAND TRAVERSE LIGHT MI-
POINT BETSIE TO SLEEPING BEAR POINT MI-
443 AM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EDT SUNDAY
...GALE WATCH IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY
EVENING...
* WHAT...FOR THE SMALL CRAFT ADVISORY, HIGHEST GUSTS UP TO 35
KTS FROM THE WEST AND HIGHEST WAVES AROUND 10 FEET. FOR THE
GALE WATCH, HIGHEST GUSTS UP TO 40 KTS FROM THE SOUTHWEST AND
HIGHEST WAVES AROUND 11 FEET POSSIBLE.
* WHERE...GRAND TRAVERSE BAY SOUTH OF A LINE GRAND TRAVERSE
LIGHT TO NORWOOD MI, SEUL CHOIX POINT TO 5NM WEST OF MACKINAC
BRIDGE, NORWOOD MI TO 5NM WEST OF MACKINAC BRIDGE INCLUDING
LITTLE TRAVERSE BAY, SLEEPING BEAR POINT TO GRAND TRAVERSE
LIGHT MI AND POINT BETSIE TO SLEEPING BEAR POINT MI.
* WHEN...FOR THE SMALL CRAFT ADVISORY, UNTIL 5 AM EDT SUNDAY.
FOR THE GALE WATCH, FROM LATE TONIGHT THROUGH SUNDAY EVENING.
* IMPACTS...STRONG WINDS CAN CAUSE HAZARDOUS HIGHEST WAVES WHICH
COULD CAPSIZE OR DAMAGE VESSELS AND REDUCE VISIBILITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MARINERS SHOULD CONSIDER ALTERING PLANS TO AVOID POSSIBLE
HAZARDOUS CONDITIONS. REMAIN IN PORT, SEEK SAFE HARBOR, ALTER
COURSE, AND/OR SECURE THE VESSEL FOR SEVERE WIND AND HIGHEST
WAVES.
LSZ321-322-171645-
/O.NEW.KAPX.SC.Y.0094.261017T0843Z-261019T0300Z/
WHITEFISH BAY (U.S. PORTION)/WHITEFISH POINT TO POINT IROQUOIS MI-
ST. MARYS RIVER POINT IROQUOIS TO E. POTAGANNISSING BAY-
443 AM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT SUNDAY
* WHAT...HIGHEST GUSTS UP TO 30 KTS FROM THE SOUTHWEST AND
HIGHEST WAVES AROUND 4 FEET.
* WHERE...WHITEFISH BAY (U. S. PORTION)/WHITEFISH POINT TO POINT
IROQUOIS MI AND ST. MARYS RIVER POINT IROQUOIS TO E.
POTAGANNISSING BAY.
* WHEN...UNTIL 11 PM EDT SUNDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.
LMZ346-171645-
/O.NEW.KAPX.SC.Y.0094.261017T0843Z-261019T0900Z/
MANISTEE TO POINT BETSIE MI-
443 AM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EDT MONDAY
* WHAT...HIGHEST GUSTS UP TO 35 KTS FROM THE SOUTHWEST AND
HIGHEST WAVES AROUND 11 FEET.
* WHERE...MANISTEE TO POINT BETSIE MI.
* WHEN...UNTIL 5 AM EDT MONDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.
LHZ349-171645-
/O.EXT.KAPX.SC.Y.0093.000000T0000Z-261019T0900Z/
STURGEON PT TO ALABASTER MI-
443 AM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 5 AM EDT MONDAY
* WHAT...HIGHEST GUSTS UP TO 30 KTS FROM THE SOUTHWEST AND
HIGHEST WAVES AROUND 7 FEET.
* WHERE...STURGEON PT TO ALABASTER MI.
* WHEN...UNTIL 5 AM EDT MONDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.
JPB
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