188 
FXUS64 KMRX 190703
AFDMRX

Area Forecast Discussion
National Weather Service Morristown TN
303 AM EDT Sun Apr 19 2026

...New DISCUSSION...

.KEY MESSAGES...
Updated at 301 AM EDT Sun Apr 19 2026

- Drier and cooler conditions are expected today into early next 
  week. 

- A warming trend will continue through much of the week with rain
  chances returning Friday into Saturday. 

&&

.DISCUSSION...
Issued at 301 AM EDT Sun Apr 19 2026

Currently, a trough is approaching from the west with a cold front 
moving through the region. With this cold front, showers and 
embedded storms are gradually exiting to our east with high pressure 
expanding from the southwest. This will increase northerly to 
northwesterly winds with cooler temperatures this morning and into 
the day. Significantly drier conditions are expected through the day 
with RH values dropping well into the 20s area-wide. Tonight, high 
pressure will become set up almost directly over the region, leading 
to stronger subsidence, lighter winds, and cooler temperatures. Some 
places in the northeast will drop into the 30s with patchy frost 
possible. A similar pattern will continue on Monday, keeping 
seasonally cool and dry conditions in place. Stronger subsidence 
will allow for a further drop in temperatures Monday night with 
frost more likely, especially in northeast Tennessee and southwest 
Virginia. By Tuesday, a warming trend will continue with height 
rises as ridging approaches from the west. Notably dry conditions 
will remain in place. 

Wednesday and Thursday, ridging will move into the region from the 
west with high pressure keeping the region dry. Another trough will 
approach from the west late in the week and into the weekend. There 
is still uncertainty as to how this will evolve, but rain chances 
will return at a minimum.

&&

.AVIATION...
(06Z TAFS)
Issued at 137 AM EDT Sun Apr 19 2026

Cold front moving through the area very early this morning. RA has
just started at TRI as precip moves north and east. Light to mod
rain with MVFR CIG and VSBY will continue the next 3 to 4 hours 
or so. No threat for TS. Conditions forecast to improve and dry 
out close to sunrise. N to NW winds following the frontal passage 
may be gusty at times today at all terminals. High pressure will
move in later today, promoting clearing skies and calm winds
tonight.

&&

.PRELIMINARY POINT TEMPS/POPS...
Chattanooga Airport, TN             67  44  75  46 /   0   0   0   0 
Knoxville McGhee Tyson Airport, TN  64  43  68  42 /   0   0   0   0 
Oak Ridge, TN                       65  41  69  41 /   0   0   0   0 
Tri Cities Airport, TN              60  38  62  35 /   0   0   0   0 

&&

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

$$

DISCUSSION...BW
AVIATION...KS


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