Johnson City, Tennessee 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

367
FXUS64 KMRX 061735
AFDMRX

Area Forecast Discussion
National Weather Service Morristown TN
135 PM EDT Tue Oct 6 2026

...New AVIATION...

.KEY MESSAGES...
Updated at 133 PM EDT Tue Oct 6 2026

- Dry weather to continue the rest of the week.

- Temperatures to remain above normal with a gradual warming trend
  each day.

- Tropical development is expected over the Gulf, which may
  impact the Tennessee valley and southern Appalachians this
  weekend.

&&

.DISCUSSION...
Issued at 242 AM EDT Tue Oct 6 2026

A 1024 mb high is currently centered over Michigan with troughing
well to the north and weak northwesterly flow moving in from the
upper ridge out west. The aforementioned surface high will move to
off of the Mid-Atlantic coast early tomorrow. New surface high
pressure will shift down from the Upper Plains the latter part of
the week, keeping precipitation at bay for now.

Temperatures will remain above normal with a gradual warming trend
each day. When we round out the work week mid to upper 80s are
forecast from the central to southern valley. The coolest morning of
the week will be this morning where the upper half of our forecast
area will see lows in the 40s; 50s for lows for the remainder.
Though the air is on the drier side, fog near bodies of water is
still possible.

Our next chance of precipitation will arrive sometime this weekend.
There are uncertainties as to what and when. As of last night, a
tropical disturbance with a 80 percent chance of development
determined by the NHC, will drift towards the central northern Gulf.
Deterministic models have great differences in what they think will
occur. If one thing`s certain is that our area will see rain lifting
up from the south Saturday and possibly into Monday. Some gusty
winds, most likely from a strong pressure gradient, could be
possible and of course will be monitoring.

&&

.AVIATION...
(18Z TAFS)
Issued at 133 PM EDT Tue Oct 6 2026

An area of FEW to SCT diurnal Cu have formed in the southern
valley area with little to no impact to aviation expected. VFR
throughout at all sites forecast. The one caveat is that there
could be some low stratus to develop again overnight, but
confidence is not high enough to include in the TAF. Winds will
be light through the period.


&&

.PRELIMINARY POINT TEMPS/POPS...
Chattanooga Airport, TN             56  85  56  87 /   0   0   0   0
Knoxville McGhee Tyson Airport, TN  55  82  55  84 /   0   0   0   0
Oak Ridge, TN                       54  82  54  84 /   0   0   0   0
Tri Cities Airport, TN              49  78  52  80 /   0   0   0   0

&&

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

$$

DISCUSSION...KS
AVIATION...BH