212
WHUS73 KDTX 170649
MWWDTX
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
249 AM EDT FRI APR 17 2026
LHZ421-422-171500-
/O.CON.KDTX.MF.Y.0007.000000T0000Z-260417T1400Z/
/O.NEW.KDTX.SC.Y.0022.260418T0800Z-260419T0200Z/
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER
SAGINAW BAY-INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI-
249 AM EDT FRI APR 17 2026
...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 10 AM EDT THIS
MORNING...
...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM TO 10 PM EDT
SATURDAY...
* WHAT...DURING THE DENSE FOG ADVISORY, DENSE FOG WILL REDUCE
VISIBILITY TO 1/4 NM OR LESS. DURING THE SMALL CRAFT ADVISORY,
EXPECT SUSTAINED WINDS UP TO 23 KNOTS FROM THE SOUTHWEST WITH
GUSTS UP TO 30 KNOTS. THE LARGEST SIGNIFICANT WAVES WILL BE 4
FEET WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 5 FEET.
* WHERE...OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO
INNER SAGINAW BAY AND INNER SAGINAW BAY SW OF POINT AU GRES TO
BAY PORT MI.
* WHEN...DURING THE DENSE FOG ADVISORY, FROM 4 AM TO 10 PM EDT
SATURDAY. DURING THE SMALL CRAFT ADVISORY, THE MAXIMUM WINDS
ARE EXPECTED AROUND 8 AM EDT SATURDAY WITH THE LARGEST WAVES
EXPECTED AROUND 9 AM EDT SATURDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT. LOW
VISIBILITY WILL MAKE NAVIGATION DIFFICULT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.
IF YOU MUST NAVIGATE, PROCEED WITH CAUTION. USE PROPER FOG
SIGNALS. MAKE SURE ALL RUNNING LIGHTS ARE ON. REMEMBER TO USE
YOUR RADAR AND COMPASS.
LHZ441-171500-
/O.CON.KDTX.MF.Y.0007.000000T0000Z-260417T1400Z/
/O.NEW.KDTX.SC.Y.0022.260418T0800Z-260418T2000Z/
PORT AUSTIN TO HARBOR BEACH MI-
249 AM EDT FRI APR 17 2026
...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 10 AM EDT THIS
MORNING...
...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM TO 4 PM EDT
SATURDAY...
* WHAT...DURING THE DENSE FOG ADVISORY, DENSE FOG WILL REDUCE
VISIBILITY TO 1/4 NM OR LESS. DURING THE SMALL CRAFT ADVISORY,
EXPECT SUSTAINED WINDS UP TO 20 KNOTS FROM THE SOUTHWEST WITH
GUSTS UP TO 28 KNOTS. THE LARGEST SIGNIFICANT WAVES WILL BE 5
FEET WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 7 FEET.
* WHERE...PORT AUSTIN TO HARBOR BEACH MI.
* WHEN...DURING THE DENSE FOG ADVISORY, FROM 4 AM TO 4 PM EDT
SATURDAY. DURING THE SMALL CRAFT ADVISORY, THE MAXIMUM WINDS
ARE EXPECTED AROUND 4 AM EDT SATURDAY WITH THE LARGEST WAVES
EXPECTED AROUND 8 AM EDT SATURDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT. LOW
VISIBILITY WILL MAKE NAVIGATION DIFFICULT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.
IF YOU MUST NAVIGATE, PROCEED WITH CAUTION. USE PROPER FOG
SIGNALS. MAKE SURE ALL RUNNING LIGHTS ARE ON. REMEMBER TO USE
YOUR RADAR AND COMPASS.
LHZ442-443-171500-
/O.CON.KDTX.MF.Y.0007.000000T0000Z-260417T1400Z/
/O.NEW.KDTX.SC.Y.0022.260418T0800Z-260418T2000Z/
HARBOR BEACH TO PORT SANILAC MI-PORT SANILAC TO PORT HURON MI-
249 AM EDT FRI APR 17 2026
...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 10 AM EDT THIS
MORNING...
...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM TO 4 PM EDT
SATURDAY...
* WHAT...DURING THE DENSE FOG ADVISORY, DENSE FOG WILL REDUCE
VISIBILITY TO 1/4 NM OR LESS. DURING THE SMALL CRAFT ADVISORY,
EXPECT SUSTAINED WINDS UP TO 21 KNOTS FROM THE SOUTH WITH
GUSTS UP TO 28 KNOTS. THE LARGEST SIGNIFICANT WAVES WILL BE 5
FEET WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 7 FEET.
* WHERE...HARBOR BEACH TO PORT SANILAC MI AND PORT SANILAC TO
PORT HURON MI.
* WHEN...DURING THE DENSE FOG ADVISORY, FROM 4 AM TO 4 PM EDT
SATURDAY. DURING THE SMALL CRAFT ADVISORY, THE MAXIMUM WINDS
ARE EXPECTED AROUND 8 AM EDT SATURDAY WITH THE LARGEST WAVES
EXPECTED AROUND 8 AM EDT SATURDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT. LOW
VISIBILITY WILL MAKE NAVIGATION DIFFICULT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.
IF YOU MUST NAVIGATE, PROCEED WITH CAUTION. USE PROPER FOG
SIGNALS. MAKE SURE ALL RUNNING LIGHTS ARE ON. REMEMBER TO USE
YOUR RADAR AND COMPASS.
LEZ444-171400-
/O.EXA.KDTX.MF.Y.0007.000000T0000Z-260417T1400Z/
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-
249 AM EDT FRI APR 17 2026
..DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING
* WHAT...DENSE FOG WILL REDUCE VISIBILITY TO 1/4 NM OR LESS.
* WHERE...MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO
NORTH CAPE MI.
* WHEN...UNTIL 10 AM EDT THIS MORNING.
* IMPACTS...LOW VISIBILITY WILL MAKE NAVIGATION DIFFICULT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU MUST NAVIGATE, PROCEED WITH CAUTION. USE PROPER FOG
SIGNALS. MAKE SURE ALL RUNNING LIGHTS ARE ON. REMEMBER TO USE
YOUR RADAR AND COMPASS.
LHZ463-464-171400-
/O.CON.KDTX.MF.Y.0007.000000T0000Z-260417T1400Z/
LAKE HURON FROM HARBOR BEACH TO PORT SANILAC BEYOND 5NM OFF SHORE-
LAKE HURON FROM PORT SANILAC TO PORT HURON BEYOND 5NM OFF SHORE-
249 AM EDT FRI APR 17 2026
...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 10 AM EDT THIS
MORNING...
* WHAT...DENSE FOG WILL REDUCE VISIBILITY TO 1/4 NM OR LESS.
* WHERE...LAKE HURON FROM HARBOR BEACH TO PORT SANILAC BEYOND
5NM OFF SHORE AND LAKE HURON FROM PORT SANILAC TO PORT HURON
BEYOND 5NM OFF SHORE.
* WHEN...UNTIL 10 AM EDT THIS MORNING.
* IMPACTS...LOW VISIBILITY WILL MAKE NAVIGATION DIFFICULT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU MUST NAVIGATE, PROCEED WITH CAUTION. USE PROPER FOG
SIGNALS. MAKE SURE ALL RUNNING LIGHTS ARE ON. REMEMBER TO USE
YOUR RADAR AND COMPASS.
LCZ460-LHZ361>363-462-171400-
/O.CON.KDTX.MF.Y.0007.000000T0000Z-260417T1400Z/
LAKE ST CLAIR-
LAKE HURON FROM 5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LT
BEYOND 5 NM OFF SHORE-
LAKE HURON FROM PRESQUE ISLE LIGHT TO STURGEON POINT MI BEYOND
5NM OFF SHORE-
LAKE HURON FROM STURGEON POINT TO ALABASTER MI BEYOND 5NM OFF
SHORE-
LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE-
249 AM EDT FRI APR 17 2026
...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 10 AM EDT THIS
MORNING...
* WHAT...DENSE FOG WILL REDUCE VISIBILITY TO 1/4 NM OR LESS.
* WHERE...IN LAKE ST CLAIR, LAKE ST CLAIR. IN LAKE HURON, LAKE
HURON FROM 5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LT
BEYOND 5 NM OFF SHORE, LAKE HURON FROM PRESQUE ISLE LIGHT TO
STURGEON POINT MI BEYOND 5NM OFF SHORE, LAKE HURON FROM
STURGEON POINT TO ALABASTER MI BEYOND 5NM OFF SHORE AND LAKE
HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE.
* WHEN...UNTIL 10 AM EDT THIS MORNING.
* IMPACTS...LOW VISIBILITY WILL MAKE NAVIGATION DIFFICULT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU MUST NAVIGATE, PROCEED WITH CAUTION. USE PROPER FOG
SIGNALS. MAKE SURE ALL RUNNING LIGHTS ARE ON. REMEMBER TO USE
YOUR RADAR AND COMPASS.
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