785
FXUS64 KMRX 261141
AFDMRX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MORRISTOWN TN
741 AM EDT MON OCT 26 2026
..NEW AVIATION
KEY MESSAGES
UPDATED AT 729 AM EDT MON OCT 26 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 133 AM EDT MON OCT 26 2026
CURRENTLY, RIDGING IS CENTERED JUST TO OUR WEST WITH SURFACE HIGH
PRESSURE ACROSS THE EASTERN U.S. THIS PATTERN WILL CONTINUE
SUBSIDENCE AND PROMOTE A COOL MORNING TODAY, FOLLOWED BY MILD
DAYTIME HIGHS IN THE 70S. EFFICIENT MIXING WILL ALLOW FOR RH VALUES
TO DROP INTO THE 30S AREA-WIDE, BUT THANKFULLY A WEAK MSLP GRADIENT
WILL KEEP WINDS VERY LIGHT. BY TUESDAY, THE RIDGE WILL MOVE OVER THE
REGION, CAUSING HEIGHT RISES AND TEMPERATURES RISING FURTHER INTO
THE 70S. WITH EVEN MORE EFFICIENT MIXING, LOWER RH VALUES INTO THE
20S ARE LIKELY FOR SOME. THE PATTERN WILL BE SIMILAR AGAIN ON
WEDNESDAY WITH SOME SUPPRESSION OF THE RIDGE TO OUR EAST, LEADING TO
A VERY SLIGHT DROP IN DAYTIME HIGHS. BY THURSDAY, THE FLOW WILL
BECOME MORE ZONAL ALOFT WITH SIMILARLY MILD DAYTIME HIGHS EXPECTED.
BY FRIDAY, A SHORTWAVE WILL EJECT OUT OF THE ROCKIES WITH ADDITIONAL
RIDGING EXPECTED OVER OUR REGION DOWNSTREAM. SURFACE HIGH PRESSURE
AND WILL KEEP CONDITIONS SIMILAR TO PREVIOUS DAYS. FOR HALLOWEEN,
THE RIDGE WILL PUSH OFF TO OUR EAST AS THE SHORTWAVE APPROACHES FROM
THE WEST. DEPENDING ON MOISTURE ADVECTION AND EVOLUTION OF THE
SHORTWAVE, RAIN CHANCES WILL RETURN BUT CURRENTLY LOOK TO BE MORE
TOWARDS SUNDAY OR LATER.
AVIATION
(12Z TAFS)
ISSUED AT 729 AM EDT MON OCT 26 2026
AREA FOG DEVELOPED THIS MORNING AND IS CURRENTLY IMPACTING CHA.
TEMPO OUT THROUGH 13Z BUT WILL MONITOR. 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 74 48 76 50 / 0 0 0 0
KNOXVILLE MCGHEE TYSON AIRPORT, TN 73 46 76 48 / 0 0 0 0
OAK RIDGE, TN 74 46 75 48 / 0 0 0 0
TRI CITIES AIRPORT, TN 72 41 75 44 / 0 0 0 0
MRX WATCHES/WARNINGS/ADVISORIES
NC...NONE.
TN...NONE.
VA...NONE.
DISCUSSION...BW
AVIATION...KS
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