621  
FZUS63 KDTX 130153  
GLFSC  
 
LAKE ST CLAIR FORECAST  
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI  
953 PM EDT SAT JUL 12 2025  
 
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, 30.00 INCHES, WILL FILL IN OVER THE  
GREAT LAKES AND WILL HOLD THROUGH TUESDAY. THE NEXT CHANCE FOR  
MORE ACTIVE WEATHER WILL RETURN BY THE MIDWEEK PERIOD AS A PRE-  
FRONTAL TROUGH AND COLD FRONT MOVE OVER THE REGION.  
 
LCZ460-131000-  
LAKE ST CLAIR-  
953 PM EDT SAT JUL 12 2025  
   
REST OF TONIGHT
 
SOUTHWEST WINDS 10 TO 15 KNOTS BECOMING WEST 5 TO  
10 KNOTS AFTER MIDNIGHT. MOSTLY CLOUDY THIS EVENING BECOMING PARTLY  
CLOUDY. WAVES 2 FEET OR LESS.   
SUNDAY
 
WEST WINDS 5 TO 10 KNOTS BACKING TO THE SOUTHWEST IN THE  
AFTERNOON. MOSTLY SUNNY. WAVES 2 FEET OR LESS.   
SUNDAY NIGHT
 
NORTHWEST WINDS 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES 2  
FEET OR LESS.   
MONDAY
 
WEST WINDS 5 TO 10 KNOTS BACKING TO THE SOUTH EARLY IN THE  
AFTERNOON. SUNNY. WAVES 2 FEET OR LESS.   
MONDAY NIGHT
 
SOUTHWEST WINDS 5 TO 10 KNOTS. CLEAR. WAVES 2 FEET  
OR LESS.   
TUESDAY
 
LIGHT AND VARIABLE WINDS BECOMING SOUTH 5 TO 10 KNOTS IN  
THE AFTERNOON AND EVENING. MOSTLY CLEAR. WAVES 2 FEET OR LESS.   
WEDNESDAY
 
SOUTH WINDS 10 TO 15 KNOTS. PARTLY CLOUDY. A CHANCE OF  
SHOWERS AND THUNDERSTORMS. WAVES 2 FEET OR LESS.   
THURSDAY
 
NORTHWEST WINDS 10 TO 15 KNOTS. PARTLY CLOUDY. SHOWERS  
LIKELY AND A CHANCE OF THUNDERSTORMS. WAVES 2 FEET OR LESS.  
 

 
 
AA  
 
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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