Kingsport, Tennessee 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

233
FXUS64 KMRX 042315 AAA
AFDMRX

Area Forecast Discussion...UPDATED
National Weather Service Morristown TN
715 PM EDT Mon Aug 4 2025

...New AVIATION...

.DISCUSSION...
Issued at 133 PM EDT Mon Aug 4 2025

Key Messages:

1. Daily rain chances will continue through the week as a trough
remains parked over the region.

2. Below normal temperatures expected through mid week, warming back
up to near normal by the weekend.

Discussion:

Showers will be isolated to scattered with better coverage toward
the mountains as a shortwave sits nearly stationary over the
Mississippi Valley today and tonight. Cold air damming remains in
place over the region and east of the mountains with high pressure
over the Northeast and Mid-Atlantic. Rain chances will increase
this evening continuing overnight and into tomorrow morning as
upper level southerly flow brings overrunning moisture and lift
with CAD in place in the mountains. Rain will be more widespread
tomorrow evening through Wednesday as the upper trough moves
eastward into the Tennessee Valley. Instability will be low
keeping activity low- topped and thunder chances minimal through
at least Wednesday morning.

By Thursday, showers and storms will be back to the usual diurnal
and terrain induced variety as a ridge builds into the Central U.S.
Weak low pressure over the coastal Southeast, will likely stay
confined closer to the coast but it is something to keep an eye on
and the NBM seems to reflect some of that moisture making it into
the region over the weekend.

Below normal temps continue through midweek as troughing and CAD
keep the cool air mass in place. A warming trend is expected late
this week into the weekend which will put us back at normal temps by
Friday or Saturday as southerly flow moderates this cool air mass.

&&

.AVIATION...
(00Z TAFS)
Issued at 712 PM EDT Mon Aug 4 2025

Broken to overcast VFR cigs are likely to drop to MVFR at TYS and
CHA over the next few hours as the boundary layer cools. A return
to VFR is expected tomorrow afternoon. At TRI, rain will be a
factor, as will a downslope wind off the mountains. Rain may
reduce vis to MVFR at times, but should remain light. The
downslope wind is expected to keep cigs predominantly VFR, but a
drop to MVFR will be possible at times (mentioned as a PROB30).
Most of the rain should exit by tomorrow afternoon, leaving VFR
conditions for the rest of the TAF period.

&&

.PRELIMINARY POINT TEMPS/POPS...
Chattanooga Airport, TN             66  79  68  83 /  20  30  40  60
Knoxville McGhee Tyson Airport, TN  66  81  68  83 /  30  40  50  60
Oak Ridge, TN                       66  81  68  83 /  20  30  40  60
Tri Cities Airport, TN              64  78  62  78 /  50  50  50  60

&&

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

$$

DISCUSSION...McD
AVIATION...DGS