515
FXUS64 KMRX 251136
AFDMRX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MORRISTOWN TN
736 AM EDT SUN OCT 25 2026
..NEW AVIATION
KEY MESSAGES
UPDATED AT 730 AM EDT SUN OCT 25 2026
- DRY WEATHER WILL CONTINUE OVER THE FORECAST PERIOD WITH COOL
MORNINGS AND MILD AFTERNOON HIGHS.
- LOW RELATIVE HUMIDITY VALUES IN THE 30S TO UPPER 20S ARE ALSO
EXPECTED MOST DAYS BUT WITH LIGHT WINDS OVERALL.
DISCUSSION
ISSUED AT 132 AM EDT SUN OCT 25 2026
CURRENTLY, A STRONG UPPER RIDGE OF HIGH PRESSURE IS CENTERED TO OUR
SOUTHWEST OVER THE SOUTHERN MISSISSIPPI RIVER VALLEY WITH SURFACE
HIGH PRESSURE OVER NEW ENGLAND. THIS WILL CONTINUE TO PROMOTE
SUBSIDENCE WITH COOL MORNING LOWS AND MILD DAYTIME HIGHS. EFFICIENT
MIXING WILL ALLOW RH'S TO DROP INTO THE 30S AND UPPER 20S WITH WEAK
FLOW AND MSLP GRADIENT KEEPING WINDS LIGHT. EARLY IN THE WEEK, THE
RIDGE WILL PROGRESS EASTWARD WITH SURFACE HIGH PRESSURE SHIFTING
ALMOST DIRECTLY OVER THE AREA. THE HEIGHT RISES WILL LEAD TO A
SLIGHT WARMING TREND AND CONTINUED DAYTIME MIXING KEEPING RH VALUES
LOW.
THIS SAME GENERAL PATTERN WILL CONTINUE THROUGH THE END OF THE WEEK
AND INTO THE WEEKEND FOR HALLOWEEN WITH ADDITIONAL HEIGHT RISES
POTENTIALLY PUSHING HIGHS CLOSER TO 80 DEGREES FOR SOME. OTHERWISE,
LOW RHS AND LIGHT WINDS WILL KEEP LIMITED FIRE WEATHER CONCERNS IN
THE FORECAST EACH DAY, BUT THANKFULLY ONLY ABOUT 10 PERCENT OF THE
AREA IS IN DROUGHT AT THIS TIME.
AVIATION
(12Z TAFS)
ISSUED AT 730 AM EDT SUN OCT 25 2026
SOME AREA FOG THIS MORNING NEAR WATERWAYS, BUT NOT EXPECTING
IMPACTS AT ANY TERMINALS AT THIS TIME. OTHERWISE, SURFACE HIGH
PRESSURE AND UPPER LEVEL RIDGING TO PERSIST THROUGH THE TAF TERM.
THUS, VFR, DRY, MOSTLY SUNNY/CLEAR SKIES, AND LIGHT WINDS OR CALM
CONDITIONS CAN BE EXPECTED.
PRELIMINARY POINT TEMPS/POPS
CHATTANOOGA AIRPORT, TN 73 46 73 46 / 0 0 0 0
KNOXVILLE MCGHEE TYSON AIRPORT, TN 72 44 73 44 / 0 0 0 0
OAK RIDGE, TN 72 44 73 44 / 0 0 0 0
TRI CITIES AIRPORT, TN 70 39 71 40 / 0 0 0 0
MRX WATCHES/WARNINGS/ADVISORIES
NC...NONE.
TN...NONE.
VA...NONE.
DISCUSSION...BW
AVIATION...KS
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