591 
FXUS64 KMRX 281717
AFDMRX

Area Forecast Discussion
National Weather Service Morristown TN
117 PM EDT Wed Oct 28 2026

...New DISCUSSION, AVIATION...

.KEY MESSAGES...
Updated at 101 PM EDT Wed Oct 28 2026

- Dry conditions will continue for the next several days with mild 
  highs in the 70s and seasonally cool lows in the 40s. 

- Relative humidity values will drop into the 30s during the 
  afternoon and early evening hours but with very light winds. 

- Weekend rain chances are trending downward as high pressure
  maintains a grip on the region.
  

&&

.DISCUSSION...
Issued at 101 PM EDT Wed Oct 28 2026

The next few days will remain dry with pleasant temperatures as a
850-700 mb ridge will be parked across the Southeast. The main
impacts through Friday will be morning fog, which should mainly be
focused along area rivers and lakes. Low afternoon RH values in
the 30s will be a concern to fire weather interests, but winds
will be light through the weekend.

Previous forecasts have pointed to the next chance of rain 
arriving Saturday night and continuing into Sunday. Models are 
backing away from that solution with the latest runs, particularly
the ECMWF, which now has completely dry weather until late next 
week. A few mid/upper level shortwave troughs cross the area in
this time frame, but are too moisture-starved in the low levels to
produce much measureable precip. The strong 850 mb ridge remains 
anchored to the Mid-Atlantic coast and Outer Banks region through 
early next week, keeping deep moisture well to our west. We can
certainly use some rain, but mostly sunny skies and highs in the
70s will be enjoyable as we head into November. 

&&

.AVIATION...
(18Z TAFS)
Issued at 101 PM EDT Wed Oct 28 2026

No aviation impacts are forecast, but fog cannot be ruled out at
any of the sites tomorrow morning. At this time, confidence is too
low to mention in the TAFs, and will allow later issuances to add
fog if confidence increases.

&&

.PRELIMINARY POINT TEMPS/POPS...
Chattanooga Airport, TN             48  76  48  78 /   0   0   0   0 
Knoxville McGhee Tyson Airport, TN  46  75  46  78 /   0   0   0   0 
Oak Ridge, TN                       46  75  46  77 /   0   0   0   0 
Tri Cities Airport, TN              44  74  43  77 /   0   0   0   0 

&&

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

$$

DISCUSSION...DGS
AVIATION...DGS


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