544  
FZUS63 KDTX 171957  
GLFLH  
 
OPEN LAKE FORECAST FOR LAKE HURON  
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI  
357 PM EDT FRI JUL 17 2026  
 
FOR WATERS BEYOND FIVE NAUTICAL MILES OFF SHORE ON LAKE HURON  
 
WAVES ARE THE SIGNIFICANT WAVE HEIGHT - THE AVERAGE OF THE HIGHEST  
1/3 OF THE WAVE SPECTRUM. OCCASIONAL WAVE HEIGHT IS THE AVERAGE OF  
THE HIGHEST 1/10 OF THE WAVE SPECTRUM.  
   
SYNOPSIS  
CANADIAN WILDFIRE SMOKE PERSISTS UNTIL THE OVERNIGHT  
HOURS AS WEAK LOW PRESSURE SYSTEMS APPROACH THE REGION BRINGING  
SOME SHOWERS AND THUNDERSTORMS. THIS WILL BE FOLLOWED BY A  
SECONDARY LOW ON SATURDAY TRACKING ACROSS THE STRAITS INTO  
NORTHERN LAKE HURON WITH ADDITIONAL UNSETTLED WEATHER.  
 
LHZ361-180400-  
LAKE HURON FROM 5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LT  
BEYOND 5 NM OFF SHORE-  
357 PM EDT FRI JUL 17 2026  
   
TONIGHT  
SOUTHEAST WINDS 10 TO 15 KNOTS VEERING TO THE SOUTH  
EARLY IN THE MORNING. A CHANCE OF SHOWERS IN THE EVENING...THEN  
SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS AFTER MIDNIGHT.  
SMOKE. WAVES 1 TO 3 FEET BUILDING TO 3 TO 5 FEET EARLY IN THE  
MORNING.    
SATURDAY  
SOUTHWEST WINDS 15 TO 20 KNOTS WITH GUSTS TO AROUND  
30 KNOTS VEERING TO THE NORTHWEST WITH GUSTS TO AROUND 30 KNOTS  
IN THE AFTERNOON. A CHANCE OF SHOWERS IN THE MORNING. AREAS OF  
SMOKE. WAVES 4 TO 6 FEET.    
SATURDAY NIGHT  
NORTHWEST WINDS 15 TO 20 KNOTS WITH GUSTS TO  
AROUND 30 KNOTS BECOMING NORTH 5 TO 10 KNOTS. SMOKE IN THE  
EVENING. PATCHY SMOKE AFTER MIDNIGHT. WAVES 4 TO 6 FEET SUBSIDING  
TO 2 TO 4 FEET AFTER MIDNIGHT. WAVES OCCASIONALLY AROUND 8 FEET.    
SUNDAY  
LIGHT AND VARIABLE WINDS. WAVES 2 FEET OR LESS.    
SUNDAY NIGHT  
SOUTH WINDS 5 TO 10 KNOTS INCREASING TO 10 TO  
15 KNOTS AFTER MIDNIGHT. WAVES 2 FEET OR LESS.    
MONDAY  
SOUTH WINDS 10 TO 15 KNOTS BECOMING SOUTHWEST 15 TO  
20 KNOTS LATE IN THE EVENING. SHOWERS LIKELY LATE IN THE MORNING.  
A CHANCE OF THUNDERSTORMS. RAIN SHOWERS LATE IN THE AFTERNOON.  
WAVES 2 TO 4 FEET BUILDING TO 4 TO 6 FEET LATE IN THE AFTERNOON.  
WAVES OCCASIONALLY AROUND 8 FEET.    
TUESDAY  
SOUTHWEST WINDS 15 TO 20 KNOTS BECOMING NORTHWEST  
20 TO 25 KNOTS IN THE LATE MORNING AND EARLY AFTERNOON...THEN  
INCREASING TO 30 KNOTS . GUSTS TO 35 KNOT GALES. A CHANCE OF  
SHOWERS. WAVES 8 TO 12 FEET BUILDING TO 10 TO 14 FEET . WAVES  
OCCASIONALLY AROUND 18 FEET.    
WEDNESDAY  
NORTHWEST WINDS TO 30 KNOTS DECREASING TO 15 TO  
20 KNOTS. GUSTS TO 35 KNOT GALES. WAVES 8 TO 12 FEET. WAVES  
OCCASIONALLY AROUND 15 FEET.  
 
 
 
LHZ362-363-180400-  
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-  
357 PM EDT FRI JUL 17 2026  
   
..DENSE SMOKE ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING  
 
   
TONIGHT  
SOUTHEAST WINDS 10 TO 15 KNOTS BECOMING SOUTH 15 TO  
20 KNOTS EARLY IN THE MORNING. SMOKE. A CHANCE OF SHOWERS AFTER  
MIDNIGHT. WAVES 1 TO 3 FEET BUILDING TO 3 TO 5 FEET AFTER  
MIDNIGHT.    
SATURDAY  
SOUTHWEST WINDS 15 TO 20 KNOTS DECREASING TO 10 TO  
15 KNOTS LATE IN THE MORNING...THEN BECOMING WEST 15 TO 20 KNOTS  
WITH GUSTS TO AROUND 30 KNOTS EARLY IN THE AFTERNOON BECOMING  
NORTHWEST 20 TO 25 KNOTS WITH GUSTS TO AROUND 30 KNOTS LATE IN  
THE AFTERNOON. A CHANCE OF SHOWERS IN THE MORNING. AREAS OF SMOKE  
IN THE MORNING...THEN PATCHY SMOKE IN THE AFTERNOON. WAVES 4 TO  
6 FEET BUILDING TO 6 TO 9 FEET IN THE AFTERNOON. WAVES  
OCCASIONALLY AROUND 12 FEET.    
SATURDAY NIGHT  
NORTHWEST WINDS 20 TO 25 KNOTS WITH GUSTS TO  
AROUND 30 KNOTS BECOMING NORTHWEST 20 TO 25 KNOTS. PATCHY SMOKE.  
WAVES 5 TO 7 FEET. WAVES OCCASIONALLY AROUND 10 FEET.    
SUNDAY  
NORTH WINDS 5 TO 10 KNOTS EARLY IN THE MORNING BECOMING  
LIGHT AND VARIABLE. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET IN  
THE LATE MORNING AND AFTERNOON.    
SUNDAY NIGHT  
EAST WINDS 5 TO 10 KNOTS VEERING TO THE SOUTHEAST  
BY MIDNIGHT...THEN BECOMING SOUTH 10 TO 15 KNOTS AFTER MIDNIGHT.  
WAVES 2 FEET OR LESS.    
MONDAY  
SOUTH WINDS 10 TO 15 KNOTS BECOMING SOUTHWEST 15 TO  
20 KNOTS WITH GUSTS TO AROUND 30 KNOTS LATE IN THE MORNING...THEN  
BECOMING SOUTH 20 TO 25 KNOTS WITH GUSTS TO AROUND 30 KNOTS LATE  
IN THE AFTERNOON DECREASING TO 15 TO 20 KNOTS WITH GUSTS TO  
AROUND 30 KNOTS LATE IN THE EVENING. A CHANCE OF SHOWERS LATE IN  
THE MORNING. RAIN SHOWERS LATE IN THE AFTERNOON. WAVES 2 TO  
4 FEET BUILDING TO 6 TO 9 FEET. WAVES OCCASIONALLY AROUND  
12 FEET.    
TUESDAY  
SOUTHWEST WINDS 15 TO 20 KNOTS WITH GUSTS TO AROUND  
30 KNOTS DECREASING TO 10 TO 15 KNOTS IN THE LATE MORNING AND  
EARLY AFTERNOON...THEN BECOMING NORTHWEST 20 TO 25 KNOTS WITH  
GUSTS TO 40 KNOT GALES EARLY IN THE EVENING INCREASING TO  
30 KNOTS WITH GUSTS TO 35 KNOT GALES BY MIDNIGHT. A CHANCE OF  
SHOWERS. WAVES 8 TO 12 FEET BUILDING TO 10 TO 14 FEET . WAVES  
OCCASIONALLY AROUND 18 FEET.    
WEDNESDAY  
NORTHWEST WINDS TO 30 KNOTS WITH GUSTS TO 35 KNOT  
GALES DECREASING TO 15 TO 20 KNOTS. A CHANCE OF SHOWERS EARLY IN  
THE MORNING. WAVES 8 TO 12 FEET. WAVES OCCASIONALLY AROUND  
15 FEET.  
 
 
 
LHZ462>464-180400-  
LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE-  
LAKE HURON FROM HARBOR BEACH TO PORT SANILAC BEYOND 5NM OFF SHORE-  
LAKE HURON FROM PORT SANILAC TO PORT HURON BEYOND 5NM OFF SHORE-  
357 PM EDT FRI JUL 17 2026  
   
..DENSE SMOKE ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING  
 
   
TONIGHT  
SOUTHEAST WINDS 5 TO 10 KNOTS BECOMING SOUTH 10 TO  
15 KNOTS IN THE LATE EVENING AND OVERNIGHT. SMOKE. WAVES 1 TO  
3 FEET BUILDING TO 2 TO 4 FEET AFTER MIDNIGHT.    
SATURDAY  
SOUTHWEST WINDS 10 TO 15 KNOTS INCREASING TO 15 TO  
20 KNOTS LATE IN THE MORNING...THEN BECOMING WEST 10 TO 15 KNOTS  
EARLY IN THE AFTERNOON BECOMING NORTHWEST 15 TO 20 KNOTS WITH  
GUSTS TO AROUND 30 KNOTS LATE IN THE AFTERNOON. A CHANCE OF  
THUNDERSTORMS IN THE MORNING...THEN A CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE AFTERNOON. PATCHY SMOKE IN THE AFTERNOON.  
WAVES 3 TO 5 FEET.    
SATURDAY NIGHT  
NORTH WINDS 20 TO 25 KNOTS WITH GUSTS TO AROUND  
30 KNOTS DECREASING TO 10 TO 15 KNOTS. PATCHY SMOKE. WAVES 6 TO  
9 FEET. WAVES OCCASIONALLY AROUND 12 FEET.    
SUNDAY  
NORTH WINDS 10 TO 15 KNOTS DECREASING TO 5 TO 10 KNOTS  
IN THE LATE MORNING AND AFTERNOON. WAVES 3 TO 5 FEET SUBSIDING TO  
1 TO 3 FEET EARLY IN THE AFTERNOON.    
SUNDAY NIGHT  
LIGHT AND VARIABLE WINDS BECOMING SOUTHEAST 5 TO  
10 KNOTS BY MIDNIGHT...THEN VEERING TO THE SOUTH AFTER MIDNIGHT.  
WAVES 2 FEET OR LESS.    
MONDAY  
SOUTH WINDS 10 TO 15 KNOTS INCREASING TO 15 TO 20 KNOTS  
WITH GUSTS TO AROUND 30 KNOTS LATE IN THE AFTERNOON. SHOWERS LATE  
IN THE AFTERNOON. WAVES 1 TO 3 FEET BUILDING TO 3 TO 5 FEET.    
TUESDAY  
SOUTHWEST WINDS 15 TO 20 KNOTS DECREASING TO 10 TO  
15 KNOTS IN THE LATE MORNING AND EARLY AFTERNOON...THEN BECOMING  
NORTHWEST 15 TO 20 KNOTS WITH GUSTS TO 35 KNOT GALES EARLY IN THE  
EVENING INCREASING TO 20 TO 25 KNOTS WITH GUSTS TO 35 KNOT GALES  
BY MIDNIGHT. SHOWERS EARLY IN THE MORNING. A CHANCE OF  
THUNDERSTORMS. A CHANCE OF SHOWERS . WAVES 3 TO 5 FEET BUILDING  
TO 8 TO 12 FEET . WAVES OCCASIONALLY AROUND 15 FEET.    
WEDNESDAY  
NORTHWEST WINDS 20 TO 25 KNOTS WITH GUSTS TO AROUND  
30 KNOTS DECREASING TO 15 TO 20 KNOTS WITH GUSTS TO AROUND  
30 KNOTS . A CHANCE OF SHOWERS EARLY IN THE MORNING. WAVES 6 TO  
9 FEET. WAVES OCCASIONALLY AROUND 11 FEET.  
 
 
 
LHZ461-180400-  
MAFOR 1721/  
HURON NORTH 11300 11310 12410 11516 11620 12730. A CHANCE OF  
THUNDERSTORMS OVERNIGHT AND SATURDAY MORNING. WAVES 1 TO 3 FEET  
BUILDING TO 2 TO 4 FEET TONIGHT. WAVES 2 TO 4 FEET BUILDING TO 4  
TO 6 FEET. OCCASIONAL WAVE HEIGHT AROUND 8 FEET SATURDAY.  
 
HURON SOUTH 11300 11310 11410 13510 11610 11720. WAVES 2  
FEET OR LESS BUILDING TO 1 TO 3 FEET...THEN BUILDING TO 2 TO 4  
FEET TONIGHT. WAVES 3 TO 5 FEET SATURDAY.  
 
 
 
KGK  
 
EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT  
WEATHER.GOV/DTX/GLFTABLE (ALL LOWER CASE)  
 
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT  
WEATHER.GOV/GREATLAKES (ALL LOWER CASE)  
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