900  
FXUS64 KMRX 241855  
AFDMRX  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE MORRISTOWN TN  
255 PM EDT SAT OCT 24 2026  
   
..NEW DISCUSSION
 
 
   
KEY MESSAGES
 
 
UPDATED AT 255 PM EDT SAT OCT 24 2026  
 
- DRY WEATHER DOMINATES THE FORECAST PERIOD, WITH COOL MORNINGS  
AND PLEASANT AFTERNOONS EACH DAY. AFTERNOON RELATIVE HUMIDITY  
WILL REMAIN ON THE LOWER SIDE AS WELL.  
 

 
   
DISCUSSION
 
 
ISSUED AT 255 PM EDT SAT OCT 24 2026  
 
ANOTHER PLEASANT FALL DAY HAS PLAYED OUT ACROSS THE REGION WITH  
MOSTLY SUNNY SKIES AND TEMPERATURES IN THE 60S AND LOW 70S. GUIDANCE  
REMAINS IN AGREEMENT WITH THE STRENGTH AND POSITIONING OF OUR UPPER  
LEVEL RIDGE OVER THE OHIO VALLEY REGION THROUGH MID-WEEK. THIS  
FEATURE WILL CONTINUE TO INFLUENCE OUR WEATHER PATTERN FOR MUCH OF  
THE NEXT 7 DAYS. THE RIDGE AXIS WILL GRADUALLY SHIFT EAST OVER THE  
NEXT FEW DAYS WHILE INCOMING SHORTWAVE TROUGH OVER THE GREAT LAKE  
REGION WILL SUCCESSFULLY WEAKEN THE RIDGE MID-WEEK. LATEST MODEL  
TRENDS KEEP US DRY THROUGH NEXT FRIDAY WITH RAIN CHANCES BEGINNING  
NEXT SUNDAY. MODELS HAVE GRADUALLY SLOWED DOWN THE INCOMING SYSTEM  
FOR NEXT WEEKEND THAT IT NOW APPEARS THAT HALLOWEEN SHOULD REMAIN  
DRY. THIS IS GREAT NEWS FOR THOSE OF US EXCITED FOR THE HOLIDAY.  
 
PERSISTENCE TYPE WEATHER FORECAST WITH LOWS IN THE 40S WITH NON-ZERO  
CHANCE OF PATCHY FOG DEVELOPMENT WHILE DAYTIME HIGHS ARE IN THE  
UPPER 60S AND LOWER 70S WITH MOSTLY SUNNY SKIES. THIS PATTERN WILL  
SUPPORT AMPLE MIXING AND LOWER AFTERNOON RELATIVE HUMIDITY VALUES,  
BUT LIGHT WINDS SHOULD LIMIT ANY MEANINGFUL FIRE WEATHER CONCERNS  
FOR NOW.  
 

 
   
AVIATION
 
 
(18Z TAFS)  
ISSUED AT 103 PM EDT SAT OCT 24 2026  
 
VFR CONDITIONS FORECAST THROUGHOUT THE PERIOD. WINDS WILL BE  
GENERALLY LIGHT AND VARIABLE UNDER A STRONG SURFACE HIGH PRESSURE.  
A NON-ZERO CHANCE FOR PATCHY FOG OVERNIGHT, BUT LEFT IT OUT OF THE  
TAF GIVEN THE LOW END CHANCE.  
 

 
   
PRELIMINARY POINT TEMPS/POPS
 
 
CHATTANOOGA AIRPORT, TN 46 73 47 74 / 0 0 0 0  
KNOXVILLE MCGHEE TYSON AIRPORT, TN 45 72 45 73 / 0 0 0 0  
OAK RIDGE, TN 45 72 45 73 / 0 0 0 0  
TRI CITIES AIRPORT, TN 40 70 40 72 / 0 0 0 0  
 

 
   
MRX WATCHES/WARNINGS/ADVISORIES
 
 
NC...NONE.  
TN...NONE.  
VA...NONE.  

 
 

 
 
DISCUSSION...BH  
AVIATION...BH  
 
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