Clarksville, Tennessee 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

549
FXUS64 KOHX 141730
AFDOHX

Area Forecast Discussion
National Weather Service Nashville TN
1230 PM CDT Thu Aug 14 2025

...New AVIATION...

.KEY MESSAGES...
Updated at 1230 PM CDT Thu Aug 14 2025

- Low to medium (20-40%) storm chances today. No severe weather
  is expected, but heavy rain could lead to localized flooding.

- Heat returns tomorrow, with high temperatures in the mid to
  upper 90s. Heat indices rise into the low triple digits west of
  the Cumberland Plateau.

&&

.SHORT TERM...
(Rest of today through Friday)
Issued at 1103 AM CDT Thu Aug 14 2025

After some areas of fog this morning, the sun has come out with Cu
developing along the plateau. There have been some isolated showers
so far. Expect more scattered storms to develop as the morning and
early afternoon hours progress with a shortwave moving across the
area. Precipitable water values are not as high today with values
around 1.7-1.9" but rainfall will still be heavy with the storms
that develop. With less coverage today and slightly lower
atmospheric moisture, I think the flash flood threat is a little
lower today compared to the last couple of days. Still, some
localized flash flooding can not be completely ruled out.

There is a high chance that areas of fog develop again overnight
with a medium chance of areas of dense fog. We will have to keep
an eye out for the need of a Dense Fog Advisory tonight.

On Friday, the pattern will be transitioning from the active few
days we`ve had this week to a upper high-dominated pattern. The high
will start to gain strength on Friday but there will still be a
low chance of some isolated to scattered storms. Some highs in
the Nashville metro and west of I-65 will reach the mid 90s.

&&

.LONG TERM...
(Friday Night through next Thursday)
Issued at 1103 AM CDT Thu Aug 14 2025

The upper high will be centered over Arkansas and Missouri over the
weekend with our high temperatures climbing into the mid to possibly
upper 90s by Sunday. The subsidence will keep rain and storm chances
minimal. NBM operational guidance shows upper 90s to around 100
degrees for areas west of the plateau Monday and Tuesday but that
is around the 75th percentile of ensemble members so I`m not
ready to completely bite. As far as excessive heat concerns, it
will be hot, no doubt, but dew points will not be extreme with
values in the upper 60s to lower 70s during the afternoon. This
will equate to afternoon heat indices in the upper 90s to less
than 105. Looking out in the far future, once we get past
Wednesday it looks like some slightly cooler air will arrive
towards the end of the week as the high breaks down and is pushed
westward.

&&

.AVIATION...
(18Z TAFS)
Issued at 1230 PM CDT Thu Aug 14 2025

VFR conditions currently prevail across Middle TN airfields with
light/variable winds due to high pressure sitting right over the
area. SCT cumulus is expected to continue, and we`re watching for
iso/sct convection later this afternoon. Moved TSRA mention in
PROB30s to start at 21z at most terminals. Overnight conditions
look calm and clear which will support fog development, especially
near SRB and CSV where I have IFR in the TAFs, and then MVFR at
MQY and CKV. High pressure continues tomorrow with light/variable
winds but decreasing rain/storm chances.

&&

.PRELIMINARY POINT TEMPS/POPS...
Nashville      74  95  74  97 /  10  20   0   0
Clarksville    72  94  73  96 /   0  10   0   0
Crossville     67  86  67  88 /  10  20   0  10
Columbia       72  93  71  96 /  10  20   0  10
Cookeville     70  88  69  90 /  10  20   0  10
Jamestown      68  88  67  90 /  10  20   0  10
Lawrenceburg   71  92  70  94 /  20  30   0  10
Murfreesboro   72  94  71  96 /  10  20   0  10
Waverly        71  93  71  96 /  10  10   0   0

&&

.OHX WATCHES/WARNINGS/ADVISORIES...
None.
&&

$$

SHORT TERM...Reagan
LONG TERM....Reagan
AVIATION.....Sizemore