365  
FXUS63 KGRR 051109  
AFDGRR  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE GRAND RAPIDS MI  
709 AM EDT SAT SEP 5 2026  
   
KEY MESSAGES
 
 
- A FEW SHOWERS ARE POSSIBLE TODAY  
 
- HIGH CONFIDENCE IN DRY WEATHER TONIGHT THROUGH TUESDAY  
 
- TEMPERATURES TO BE FAIRLY CLOSE TO NORMALS THROUGH THE PERIOD  
 

 
   
DISCUSSION
 
 
ISSUED AT 407 AM EDT SAT SEP 5 2026  
 
- A FEW SHOWERS ARE POSSIBLE TODAY  
 
FEEL MOST AREAS WILL REMAIN DRY TODAY, BUT IT IS NOT OUT OF THE  
REALM OF POSSIBILITIES TO SEE A FEW LIGHT SHOWERS TODAY. CURRENT  
REGIONAL RADAR LOOPS CONFIRM A SHOWERS CONTINUE ACROSS THE AREA  
DESPITE THE DEEPER CONVECTION PUSHING SOUTH AN HOUR OR TWO AGO.  
THE SHOWERS WILL BE ASSOCIATED WITH WEAK SHORTWAVE DROPPING SOUTH  
THROUGH THE NORTHERN FLOW ALOFT. RESIDUAL MOISTURE HANGS ON INTO  
AT LEAST THE MIDDAY HOURS BEFORE DRIER AIR SWEEPS IN THIS  
AFTERNOON AND EVENING. ONLY HAVE 20-30 PCT CHANCES FOR A SHOWER  
MAINLY THIS MORNING.  
 
- HIGH CONFIDENCE IN DRY WEATHER THIS AFTERNOON THROUGH TUESDAY  
 
BUFKIT OVERVIEWS AND ENSEMBLE MEMBERS OF THE GFS AND ECMWF CONFIRM  
THAT THERE IS VERY LITTLE CHANCE FOR PRECIPITATION IN OUR AREA  
FROM THIS EVENING THROUGH TUESDAY. FOR THOSE THAT HAVE RECEIVED  
HEAVY RAIN IN THE LAST 3-5 DAYS IT WILL GIVE THOSE AREAS A CHANCE  
TO DRY OUT.  
 
- TEMPERATURES TO BE FAIRLY CLOSE TO NORMALS THROUGH THE PERIOD  
 
TEMPERATURES WILL BE CLOSE TO NORMAL FOR THIS TIME OF YEAR THROUGH  
THE 7 DAY FORECAST PERIOD (NORMALS FOR TODAY: HIGHS IN THE UPPER  
70S / LOWS IN THE UPPER 50S). WE WILL SEE HIGHS PUSH INTO THE 80S  
ONCE AGAIN EARLY NEXT WEEK IN THE SOUTHERLY FLOW AHEAD OF A MID  
WEEK COLD FRONT.  
 

 
   
AVIATION /12Z TAFS THROUGH 12Z SUNDAY/
 
 
ISSUED AT 709 AM EDT SAT SEP 5 2026  
 
A FRONT HAS SAGGED SOUTH OF THE TAF SITES THIS MORNING WITH WINDS  
GOING NORTHEAST IN ALL OBSERVATIONS. LOWER CEILINGS HAVE  
INFILTRATED AS WELL, WITH WIDESPREAD LIFR CONDITIONS. WE WILL SEE  
A SLOW AND STEADY IMPROVEMENT THIS MORNING AND EARLY AFTERNOON  
WITH CONDITIONS GOING BACK TO VFR BETWEEN 17Z AND 20Z. A FEW  
SHOWERS MAY MOVE THROUGH THE TAF SITES THIS MORNING, BUT THE  
ACTIVITY SHOULD REMAIN SCATTERED AND LIGHT. VFR WEATHER IS  
FORECAST TONIGHT.  
 

 
   
MARINE
 
 
ISSUED AT 407 AM EDT SAT SEP 5 2026  
 
CONDITIONS ARE EXPECTED TO REMAIN BELOW ADVISORY LEVELS ON LAKE  
MICHIGAN AS HIGH PRESSURE WILL DOMINATE GREAT LAKES WEATHER  
THROUGH MONDAY. WINDS WILL EITHER BE LIGHT OR OFF SHORE WHICH WILL  
KEEP WAVES AT OR BELOW 2 FEET.  
 

 
   
GRR WATCHES/WARNINGS/ADVISORIES
 
 
MI...NONE.  
MARINE...NONE.  
 

 
 

 
 
DISCUSSION...DUKE  
AVIATION...DUKE  
MARINE...DUKE  
 
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