860  
FZUS63 KDTX 190712  
GLFSC  
 
LAKE ST CLAIR FORECAST  
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI  
312 AM EDT TUE MAR 19 2019  
 
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
 
HIGH PRESSURE AVERAGING 30.50 INCHES WILL REMAIN  
FIXATED ACROSS THE OHIO VALLEY THROUGH THIS EVENING. THIS HIGH  
WILL DRIFT TO THE EAST TONIGHT AS THE NEXT LOW PRESSURE SYSTEM  
DIVES SOUTHEAST FROM WESTERN ONTARIO INTO THE NORTHERN GREAT  
LAKES. THIS LOW, AVERAGING 29.80 INCHES, WILL CONTINUE INTO  
NORTHERN LAKE HURON WEDNESDAY AND WEDNESDAY NIGHT. THIS SYSTEM  
WILL DRAG A COLD FRONT ACROSS LOWER MICHIGAN, BRINGING A PERIOD  
OF GUSTY SOUTHWEST WINDS DURING THIS TIME.  
 
LCZ460-192000-  
LAKE ST CLAIR-  
312 AM EDT TUE MAR 19 2019  
   
TODAY
 
SOUTHWEST WINDS 5 TO 10 KNOTS. MOSTLY SUNNY. WAVES 2 FEET  
OR LESS.   
TONIGHT
 
SOUTHWEST WINDS 5 TO 10 KNOTS. PARTLY CLOUDY. WAVES 2  
FEET OR LESS.   
WEDNESDAY
 
SOUTH WINDS 5 TO 10 KNOTS BECOMING SOUTHWEST 10 TO 15  
KNOTS IN THE LATE MORNING AND AFTERNOON. PARTLY SUNNY UNTIL LATE  
AFTERNOON...THEN LIGHT RAIN LATE IN THE AFTERNOON. WAVES 2 FEET OR  
LESS.   
WEDNESDAY NIGHT
 
SOUTH WINDS 10 TO 15 KNOTS DIMINISHING TO 5 TO 10  
KNOTS IN THE LATE EVENING AND EARLY MORNING...THEN BECOMING LIGHT  
AND VARIABLE EARLY IN THE MORNING. LIGHT RAIN EARLY IN THE  
EVENING...THEN LIGHT RAIN LIKELY IN THE LATE EVENING AND EARLY  
MORNING. A CHANCE OF LIGHT RAIN EARLY IN THE MORNING. WAVES 2 FEET  
OR LESS.   
THURSDAY
 
WEST WINDS 5 TO 10 KNOTS. MOSTLY CLOUDY WITH A CHANCE OF  
LIGHT RAIN EARLY IN THE MORNING...THEN PARTLY CLOUDY. WAVES 2 FEET  
OR LESS.   
FRIDAY
 
NORTH WINDS 15 TO 20 KNOTS. PARTLY CLOUDY. WAVES 2 FEET OR  
LESS.   
SATURDAY
 
WEST WINDS 10 TO 15 KNOTS. CLEAR. WAVES 2 FEET OR LESS.  
 
WAVE HEIGHTS ARE FOR ICE FREE AREAS.  
 

 
 
IRL  
 
EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT  
WEATHER.GOV/DTX/GLFTABLESC  
 
GRAPHICAL MARINE FORECASTS ARE AVAILABLE AT WEATHER.GOV/GREATLAKES  
 
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