917
FXUS64 KMRX 231726
AFDMRX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MORRISTOWN TN
126 PM EDT SUN AUG 23 2026
..NEW AVIATION
KEY MESSAGES
UPDATED AT 1219 PM EDT SUN AUG 23 2026
- DRY CONDITIONS WITH MORE COMFORTABLE HUMIDITY LEVELS THROUGH
TUESDAY.
- SHOWER AND THUNDERSTORM CHANCES WILL RETURN WEDNESDAY AND
THURSDAY.
DISCUSSION
ISSUED AT 1216 AM EDT SUN AUG 23 2026
THE COLD FRONT IS CURRENTLY ON OUR DOORSTEP OVER EASTERN KENTUCKY
AND THE CUMBERLAND PLATEAU ON THE LATEST ANALYSIS. SHOWERS AND
STORMS ARE CURRENTLY ISOLATED BUT NEW ACTIVITY IS POPPING UP IN THE
FOOTHILLS OF THE EAST TENNESSEE MOUNTAINS. CAMS AND THE NBM AGREE
THAT SHOWERS AND STORMS WILL DISSIPATE BY 1 OR 2 AM EDT. CONFIDENCE
IS INCREASING THAT CLOUDS WILL CLEAR OUT BEFORE SUNRISE AND FOG WILL
LIKELY BE AN ISSUE THIS MORNING. THE FRONT WILL MOVE THROUGH TONIGHT
BRINGING COOLER TEMPS AND LOWER DEW POINTS TODAY AND TOMORROW.
SUNDAY AND MONDAY DEW POINTS WILL BE IN THE 50S AND HIGHS WILL BE IN
THE 80S (CHATTANOOGA AREA MAY HIT 90-91).
SUNDAY THROUGH TUESDAY WILL BE DRY WITH HIGH PRESSURE AT THE
SURFACE. THE UPPER LEVEL PATTERN WILL BE ABOUT THE SAME WITH A DEEP
TROUGH ON THE EAST COAST AND A RIDGE CENTERED OVER THE ROCKIES.
THE NBM HAS LOW RAIN CHANCES WEDNESDAY INCREASING TO 40-60% CHANCES
BY THURSDAY. THE TROUGH WILL BE CENTERED OVER THE OHIO VALLEY AGAIN
BY MIDWEEK WITH A SHORTWAVE ROTATING THROUGH THE PATTERN ON
THURSDAY.
AVIATION
(18Z TAFS)
ISSUED AT 1219 PM EDT SUN AUG 23 2026
THE PRIMARY AVIATION WEATHER CONCERN IS THE POTENTIAL FOR FOG
DEVELOPMENT LATE TONIGHT ESPECIALLY TRI. RIGHT NOW THE POTENTIAL
FOR SIGNIFICANT FOG LOOKS TOO LOW TO INCLUDE AS PREVAILING, BUT
WILL INCLUDE A FEW HOURS OF TEMPO MVFR VSBY IN FOG AROUND SUNRISE
AT TRI. OTHERWISE, A VFR FORECAST FOR THE PERIOD ALL SITES.
PRELIMINARY POINT TEMPS/POPS
CHATTANOOGA AIRPORT, TN 65 90 65 91 / 0 0 0 0
KNOXVILLE MCGHEE TYSON AIRPORT, TN 62 86 61 88 / 0 0 0 0
OAK RIDGE, TN 61 86 60 88 / 0 0 0 0
TRI CITIES AIRPORT, TN 57 81 55 84 / 0 0 0 0
MRX WATCHES/WARNINGS/ADVISORIES
NC...NONE.
TN...NONE.
VA...NONE.
DISCUSSION...MCD
AVIATION...99
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