500
WHUS73 KAPX 181541
MWWAPX
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE GAYLORD MI
1141 AM EDT SUN OCT 18 2026
LHZ345-346-LMZ323-341-342-344-345-182345-
/O.CON.KAPX.GL.W.0019.000000T0000Z-261019T0300Z/
STRAITS OF MACKINAC WITHIN 5 NM OF MACKINAC BRIDGE INCLUDING
MACKINAC ISLAND-ST IGNACE TO FALSE DETOUR CHANNEL-
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-
1141 AM EDT SUN OCT 18 2026
..GALE WARNING REMAINS IN EFFECT UNTIL 11 PM EDT THIS EVENING
* WHAT...HIGHEST GUSTS UP TO 40 KTS FROM THE SOUTHWEST AND
HIGHEST WAVES AROUND 12 FEET.
* WHERE...PORTIONS OF LAKE HURON AND LAKE MICHIGAN.
* WHEN...UNTIL 11 PM EDT THIS EVENING.
* IMPACTS...STRONG WINDS WILL CAUSE HAZARDOUS HIGHEST WAVES
WHICH COULD CAPSIZE OR DAMAGE VESSELS AND REDUCE VISIBILITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MARINERS SHOULD ALTER PLANS TO AVOID THESE HAZARDOUS CONDITIONS.
REMAIN IN PORT, SEEK SAFE HARBOR, ALTER COURSE, AND/OR SECURE THE
VESSEL FOR HAZARDOUS CONDITIONS.
LSZ321-322-182345-
/O.CON.KAPX.SC.Y.0094.000000T0000Z-261019T0300Z/
WHITEFISH BAY (U.S. PORTION)/WHITEFISH POINT TO POINT IROQUOIS MI-
ST. MARYS RIVER POINT IROQUOIS TO E. POTAGANNISSING BAY-
1141 AM EDT SUN OCT 18 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 PM EDT THIS
EVENING...
* WHAT...HIGHEST GUSTS UP TO 30 KTS FROM THE SOUTHWEST AND
HIGHEST WAVES AROUND 5 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 THIS EVENING.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.
LHZ347-348-182345-
/O.CON.KAPX.SC.Y.0094.000000T0000Z-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-
1141 AM EDT SUN OCT 18 2026
..SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 AM EDT MONDAY
* WHAT...HIGHEST GUSTS UP TO 30 KTS FROM THE SOUTHWEST AND
HIGHEST WAVES AROUND 5 FEET.
* 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...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.
LHZ349-182345-
/O.CON.KAPX.SC.Y.0093.000000T0000Z-261019T0900Z/
STURGEON PT TO ALABASTER MI-
1141 AM EDT SUN OCT 18 2026
..SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 AM EDT MONDAY
* WHAT...HIGHEST GUSTS UP TO 35 KTS FROM THE SOUTHWEST AND
HIGHEST WAVES AROUND 6 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.
LMZ346-182345-
/O.CON.KAPX.SC.Y.0094.000000T0000Z-261019T0900Z/
MANISTEE TO POINT BETSIE MI-
1141 AM EDT SUN OCT 18 2026
..SMALL CRAFT ADVISORY REMAINS 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.
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