Powells Crossroads, Tennessee Weather Forecast Discussion

145
FXUS64 KMRX 281806
AFDMRX
Area Forecast Discussion
National Weather Service Morristown TN
206 PM EDT Sun Sep 28 2025
...New DISCUSSION, AVIATION...
.KEY MESSAGES...
Updated at 146 PM EDT Sun Sep 28 2025
- Patchy fog possible overnight into tomorrow morning. Not
  expected to be as extensive as this morning.
- Very low chance for a light rain shower in the East TN mountains
  this afternoon and evening. Monday and Tuesday have low to
  medium chances for light rainfall, low chance for a thunderstorm
  each day. Best chances tomorrow and Tuesday reside closest to
  North Carolina.
- Dry and seasonable fall weather during the second half of the
  work week.
&&
.DISCUSSION...
Issued at 146 PM EDT Sun Sep 28 2025
No super significant weather expected through the seven day
forecast, but we still have some weather. A few light rain showers
across the mountains and potentially into the foothills later this
afternoon per the CAM guidance. There`s not that much instability
available today, with soundings keeping what little there is in the
warmer lower atmosphere, so lightning is pretty low risk. Tonight
patchy fog is once again a possibility, though likely not as
extensive or as soupy as this morning.
Heading into the work week, moisture from the frontal zone and
Tropical Depression Nine gets pulled back to the west where it will
help spark a few showers, maybe a thunderstorm or two, with greater
chances closest to North Carolina. No excessive amounts of rainfall
are expected either day. As the week progresses, drier air will be
advected down from the north thanks to the overall upper ridge
position, and we`ll be in for the next bout of quiet true fall
weather, especially as temperatures drop slightly by Friday.
&&
.AVIATION...
(18Z TAFS)
Issued at 146 PM EDT Sun Sep 28 2025
Dry and VFR TAFs expected through the period. Patchy fog is
possible again around daybreak tomorrow, though not expected to be
as extensive this time, so only made a mention of patches of fog
at KTRI. Otherwise winds around 10 knots today will weaken to 5
knots or less after 03z.
&&
.PRELIMINARY POINT TEMPS/POPS...
Chattanooga Airport, TN             65  85  66  85 /   0  10  10  20
Knoxville McGhee Tyson Airport, TN  62  83  64  81 /   0  10  10  30
Oak Ridge, TN                       63  83  62  81 /   0  10  10  20
Tri Cities Airport, TN              60  79  61  74 /   0  30  30  40
&&
.MRX WATCHES/WARNINGS/ADVISORIES...
NC...NONE.
TN...NONE.
VA...NONE.
&&
$$
DISCUSSION...Wellington
AVIATION...Wellington

NWS MRX Office Area Forecast Discussion