927
WHUS73 KAPX 050335
MWWAPX
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE GAYLORD MI
1135 PM EDT THU SEP 4 2025
LHZ345>349-051145-
/O.CON.KAPX.GL.W.0022.250905T0800Z-250905T2000Z/
STRAITS OF MACKINAC WITHIN 5 NM OF MACKINAC BRIDGE INCLUDING
MACKINAC ISLAND-ST IGNACE TO FALSE DETOUR CHANNEL-
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-STURGEON PT TO ALABASTER MI-
1135 PM EDT THU SEP 4 2025
..GALE WARNING REMAINS IN EFFECT FROM 4 AM TO 4 PM EDT FRIDAY
* WHAT...HIGHEST GUSTS UP TO 40 KTS FROM THE SOUTHWEST AND
HIGHEST WAVES AROUND 9 FEET EXPECTED.
* WHERE...STRAITS OF MACKINAC WITHIN 5 NM OF MACKINAC BRIDGE
INCLUDING MACKINAC ISLAND, ST IGNACE TO FALSE DETOUR CHANNEL,
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 AND STURGEON
PT TO ALABASTER MI.
* WHEN...FROM 4 AM TO 4 PM EDT FRIDAY.
* 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.
LMZ323-341-342-344>346-051145-
/O.CON.KAPX.GL.W.0022.250905T0800Z-250905T1600Z/
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-
MANISTEE TO POINT BETSIE MI-
1135 PM EDT THU SEP 4 2025
..GALE WARNING REMAINS IN EFFECT FROM 4 AM TO NOON EDT FRIDAY
* WHAT...HIGHEST GUSTS UP TO 40 KTS FROM THE SOUTHWEST AND
HIGHEST WAVES AROUND 13 FEET EXPECTED.
* 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, POINT BETSIE TO SLEEPING BEAR POINT MI, MANISTEE TO
POINT BETSIE MI.
* WHEN...FROM 4 AM TO NOON EDT FRIDAY.
* IMPACTS...STRONG WINDS WILL CAUSE HAZARDOUS HIGHEST WAVES
WHICH COULD CAPSIZE OR DAMAGE VESSELS AND REDUCE VISIBILITY.
* ADDITIONAL DETAILS...HIGHEST WAVES, 10 TO 13 FEET, WILL BE
FROM POINT BETSIE TO SLEEPING BEAR POINT AND MANISTEE TO POINT
BETSIE MI. GENERALLY UP TO 9 FEET ACROSS THE REST OF THE NEAR
SHORE ZONES ON LAKE MICHIGAN.
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.
LSZ321-322-051145-
/O.CON.KAPX.SC.Y.0088.250905T0900Z-250906T0500Z/
WHITEFISH BAY (U.S. PORTION)/WHITEFISH POINT TO POINT IROQUOIS MI-
ST. MARYS RIVER POINT IROQUOIS TO E. POTAGANNISSING BAY-
1135 PM EDT THU SEP 4 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 5 AM FRIDAY TO
1 AM EDT SATURDAY...
* WHAT...HIGHEST GUSTS UP TO 34 KTS FROM THE SOUTHWEST AND
HIGHEST WAVES AROUND 9 FEET EXPECTED.
* WHERE...WHITEFISH BAY (U. S. PORTION)/WHITEFISH POINT TO POINT
IROQUOIS MI AND ST. MARYS RIVER POINT IROQUOIS TO E.
POTAGANNISSING BAY.
* WHEN...FROM 5 AM FRIDAY TO 1 AM EDT SATURDAY.
* 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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