402 
FXUS64 KMRX 191825
AFDMRX

Area Forecast Discussion
National Weather Service Morristown TN
225 PM EDT Sun Apr 19 2026

...New DISCUSSION...

.KEY MESSAGES...
Updated at 225 PM 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 225 PM EDT Sun Apr 19 2026

The sunny skies have returned after the overnight rain. Most 
locations in the valley saw around 0.5 inches of rain with some 
places getting a bit more, and others getting a bit less. Not enough 
to bust the drought, but hopefully will help even just a little with 
fuel moisture. Winds out of the north to northwest behind the front 
have helped keep temperatures down, running 20+ degrees cooler 
compared to pre-frontal conditions yesterday. This cooler 
temperature trend will continue overnight with places in northeast 
TN, southwest VA, and elevations above 2,000 feet looking to dip 
below 40 degrees. Cannot completely rule out frost, especially in 
southwest VA with the coldest temperatures expected in that area. 
Tomorrow will see a slight uptick in temperatures, but then we drop 
again Tuesday morning with some parts of southwest VA and the 
Appalachians looking to hit the freezing mark for a few hours 
overnight. The Frost Advisories and Freeze Warnings at WFO MRX do 
not officially begin until May 1 based on climatology, but with how 
warm we've been recently anyone with outdoor plants they planted 
early due to the warm weather should take note for the cold temps.

Other than the cold morning temperatures coming up there is little 
weather of note for the region as the generally dry trend continues 
for much of the work week. A warming trend can be expected with each 
day a bit warmer than the last, culminating in our hottest day of 
the forecast looking to occur on Friday. 

Over the weekend we'll have a couple of weaker disturbances move 
through the Tennessee Valley which could bring additional rounds of 
rain. As of this writing the synoptics look fairly mild and QPF 
amounts look limited for the weekend. Of higher confidence is that 
it will put a damper on the temperatures, dropping most places back 
into the 70's with the increased cloud coverage.

&&

.AVIATION...
(18Z TAFS)
Issued at 124 PM EDT Sun Apr 19 2026

High clouds are slow to move out this afternoon. Northwesterly
winds will remain slightly gusty, up to 20 knots, through early
evening. Clearing skies this evening. Winds will be lighter
tomorrow. 

&&

.PRELIMINARY POINT TEMPS/POPS...
Chattanooga Airport, TN             44  75  47  80 /   0   0   0   0 
Knoxville McGhee Tyson Airport, TN  42  69  43  76 /   0   0   0   0 
Oak Ridge, TN                       41  70  42  77 /   0   0   0   0 
Tri Cities Airport, TN              37  61  35  71 /   0  10   0   0 

&&

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

$$

DISCUSSION...99
AVIATION...McD


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