Roan Mountain, Tennessee Weather Forecast Discussion

129
FXUS64 KMRX 062319 AAA
AFDMRX
Area Forecast Discussion...UPDATED
National Weather Service Morristown TN
719 PM EDT Sat Sep 6 2025
...New AVIATION...
.DISCUSSION...
Issued at 131 PM EDT Sat Sep 6 2025
Key Messages:
1. Scattered showers and possibly a few rumbles of thunder this
afternoon, with some showers lingering into tonight especially north
and east.
2. Drier and cooler air will move in Sunday into Monday, then the
dry weather will continue for the upcoming week with a gradual
warming trend.
Discussion:
We currently have a deep upper trough over centered over the Great
Lakes and Mississippi Valley regions and a surface cold front is
located along our northwest border counties of the Plateau and SW
VA. The trough axis will shift east overnight, and the cold front
will push through our area this evening/tonight before exiting to
our east by sunrise Sunday morning. Instabiltiy is very limited
across our area, but we will continue to see showers and possibly a
few rumbles of thunder (mainly south and east areas) this afternoon.
The precipitation will be diminishing from the west this afternoon
into early evening, but a few showers will linger tonight especially
north and east ahead of the cold front.
Surface high pressure will be building in from the north and
northwest Sunday along with drier and cooler air. Sunday will see
high temperatures around 7 to 10 degrees below seasonal normals,
with most valley locations topping out in the 70s.  The dry weather
is then expected to continue through the upcoming week. Temperatures
will gradually edge upward, with highs during the latter part of the
week expected to be around to slightly above normal for this time of
year.
&&
.AVIATION...
(00Z TAFS)
Issued at 717 PM EDT Sat Sep 6 2025
Conditions appear favorable for low cigs to form at the TAF sites
tonight, mainly TYS and TRI at MVFR levels. A surface front is
crossing the area, but the arrival of drier air through the low
levels will be delayed until tomorrow morning. With mixing of the
boundary layer with the front and light winds, fog is not expected
to be a significant issue. VFR conditions should return to all TAF
sites by noon tomoorow. Winds could gust near 20 kt at CHA.
&&
.PRELIMINARY POINT TEMPS/POPS...
Chattanooga Airport, TN             61  80  59  81 /  10   0   0   0
Knoxville McGhee Tyson Airport, TN  60  77  54  80 /  20   0   0   0
Oak Ridge, TN                       57  77  53  79 /  10   0   0   0
Tri Cities Airport, TN              58  74  48  77 /  30   0   0   0
&&
.MRX WATCHES/WARNINGS/ADVISORIES...
NC...NONE.
TN...NONE.
VA...NONE.
&&
$$
DISCUSSION...
AVIATION...DGS

NWS MRX Office Area Forecast Discussion