285  
FXUS63 KGRR 111115  
AFDGRR  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE GRAND RAPIDS MI  
715 AM EDT THU SEP 11 2025  
   
KEY MESSAGES  
 
- CHANCE OF RAIN SATURDAY  
 
 
   
DISCUSSION  
 
ISSUED AT 156 AM EDT THU SEP 11 2025  
 
- CHANCE OF RAIN SATURDAY  
 
OVERALL DRY PATTERN CONTINUES INTO NEXT WEEK WITH ONLY A CHANCE  
OF SHOWERS SATURDAY MORNING. CONVECTION FORMS ON THE NOSE OF A LLJ  
ACROSS WISCONSIN LATE FRIDAY NIGHT AND TRANSLATES EAST-SOUTHEAST  
ACROSS LOWER MICHIGAN SATURDAY MORNING. POPS AMD QPF WILL BE  
LIMITED HOWEVER AS THE LLJ IS WEAKENING. INSTABILITY AND SHEAR  
PROFILES ALSO SUGGEST THUNDER CHANCES ARE ISOLATED AT BEST.  
 
THE MAJORITY OF THE NEXT SEVERAL DAYS WILL SEE SFC HIGH PRESSURE  
EDGING DOWN FROM CANADA WITH DRY NORTH OR NORTHEAST FLOW. GULF  
MOISTURE REMAINS EFFECTIVELY CUT OFF INTO NEXT WEEK.  
 
 
   
AVIATION /12Z TAFS THROUGH 12Z FRIDAY/  
 
ISSUED AT 715 AM EDT THU SEP 11 2025  
 
VFR CONDITIONS WILL CONTINUE WITH LIGHT AND VARIABLE WINDS THROUGH  
TONIGHT.  
 
 
   
MARINE  
 
ISSUED AT 156 AM EDT THU SEP 11 2025  
 
WINDS AND WAVES WILL BE LIGHT INTO THIS WEEKEND. LAKE BREEZES IN  
THE AFTERNOON WILL SEE WEST WINDS AOB 10 KNOTS, OTHERWISE LIGHT  
OFFSHORE FLOW CAN BE EXPECTED.  
 
 
   
GRR WATCHES/WARNINGS/ADVISORIES  
 
MI...NONE.  
MARINE...NONE.  
 
 
 
 
 
DISCUSSION...OSTUNO  
AVIATION...OSTUNO  
MARINE...OSTUNO  
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