840
WHUS73 KAPX 280117
MWWAPX
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE GAYLORD MI
917 PM EDT MON APR 27 2026
LMZ323-344>346-280930-
/O.EXP.KAPX.GL.W.0012.000000T0000Z-260428T0100Z/
/O.CON.KAPX.SC.Y.0034.000000T0000Z-260428T2200Z/
GRAND TRAVERSE BAY SOUTH OF A LINE GRAND TRAVERSE LIGHT TO
NORWOOD MI-SLEEPING BEAR POINT TO GRAND TRAVERSE LIGHT MI-
POINT BETSIE TO SLEEPING BEAR POINT MI-
MANISTEE TO POINT BETSIE MI-
917 PM EDT MON APR 27 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM EDT
TUESDAY...
* WHAT...HIGHEST GUSTS UP TO 30 KTS FROM THE SOUTHWEST AND
HIGHEST WAVES AROUND 6 FEET.
* WHERE...GRAND TRAVERSE BAY SOUTH OF A LINE GRAND TRAVERSE
LIGHT TO NORWOOD MI, SLEEPING BEAR POINT TO GRAND TRAVERSE
LIGHT MI, POINT BETSIE TO SLEEPING BEAR POINT MI AND MANISTEE
TO POINT BETSIE MI.
* WHEN...UNTIL 6 PM EDT TUESDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.
LHZ346-LSZ321-322-280900-
/O.CON.KAPX.GL.W.0012.000000T0000Z-260428T0900Z/
ST IGNACE TO FALSE DETOUR CHANNEL-
WHITEFISH BAY (U.S. PORTION)/WHITEFISH POINT TO POINT IROQUOIS MI-
ST. MARYS RIVER POINT IROQUOIS TO E. POTAGANNISSING BAY-
917 PM EDT MON APR 27 2026
..GALE WARNING REMAINS IN EFFECT UNTIL 5 AM EDT TUESDAY
* WHAT...HIGHEST GUSTS UP TO 35 KTS FROM THE SOUTHEAST AND
HIGHEST WAVES AROUND 11 FEET.
* WHERE...IN LAKE HURON, ST IGNACE TO FALSE DETOUR CHANNEL. IN
LAKE SUPERIOR, WHITEFISH BAY (U. S. PORTION)/WHITEFISH POINT
TO POINT IROQUOIS MI AND ST. MARYS RIVER POINT IROQUOIS TO E.
POTAGANNISSING BAY.
* WHEN...UNTIL 5 AM EDT TUESDAY.
* 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.
LMZ341-342-280930-
/O.CON.KAPX.SC.Y.0033.000000T0000Z-260428T2200Z/
SEUL CHOIX POINT TO 5NM WEST OF MACKINAC BRIDGE-
NORWOOD MI TO 5NM WEST OF MACKINAC BRIDGE INCLUDING LITTLE
TRAVERSE BAY-
917 PM EDT MON APR 27 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM EDT
TUESDAY...
* WHAT...HIGHEST GUSTS UP TO 30 KTS FROM THE SOUTHWEST AND
HIGHEST WAVES AROUND 6 FEET.
* WHERE...SEUL CHOIX POINT TO 5NM WEST OF MACKINAC BRIDGE AND
NORWOOD MI TO 5NM WEST OF MACKINAC BRIDGE INCLUDING LITTLE
TRAVERSE BAY.
* WHEN...UNTIL 6 PM EDT TUESDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.
LHZ345-347>349-280930-
/O.CON.KAPX.SC.Y.0033.000000T0000Z-260428T2200Z/
STRAITS OF MACKINAC WITHIN 5 NM OF MACKINAC BRIDGE INCLUDING
MACKINAC ISLAND-
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-
917 PM EDT MON APR 27 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM EDT
TUESDAY...
* WHAT...HIGHEST GUSTS UP TO 30 KTS FROM THE SOUTH AND HIGHEST
WAVES AROUND 11 FEET.
* WHERE...STRAITS OF MACKINAC WITHIN 5 NM OF MACKINAC BRIDGE
INCLUDING MACKINAC ISLAND, 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...UNTIL 6 PM EDT TUESDAY.
* 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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