780
FXUS64 KMRX 031734
AFDMRX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MORRISTOWN TN
134 PM EDT SAT OCT 3 2026
..NEW AVIATION
KEY MESSAGES
UPDATED AT 127 PM EDT SAT OCT 3 2026
- SEVERAL ROUNDS OF RAIN EXPECTED THROUGH THE WEEKEND, FAVORING
NORTHERN AREAS THIS MORNING, THEN SWITCHING TO SOUTHERN AND
EASTERN AREAS THIS AFTERNOON THROUGH SUNDAY.
- DRIER AND COOLER CONDITIONS WILL RETURN NEXT WEEK.
DISCUSSION
ISSUED AT 238 AM EDT SAT OCT 3 2026
IN THE UPPER LEVELS, A BROAD TROUGH EXTENDS FROM THE DAKOTAS TO NEW
ENGLAND. A WEAK RIDGE IS OVER THE EXTREME SOUTHEAST (FL/GA/SC). THE
LATEST SURFACE ANALYSIS SHOWS A SLOW MOVING COLD FRONT JUST UPSTREAM
OVER MIDDLE TENNESSEE. SCATTERED SHOWERS WILL CONTINUE OVERNIGHT
MAINLY NORTH OF I-40. A FEW RUMBLES OF THUNDER CANNOT BE RULED OUT
BUT SHOWERS HAVE BEEN SHALLOW SO FAR. THIS AFTERNOON SCATTERED
SHOWERS AND ISOLATED STORMS WILL BE MAINLY SOUTH OF I-40 AND EAST OF
KNOXVILLE, CLOSER TO THE FOOTHILLS AND MOUNTAINS AS THE SLOW MOVING
COLD FRONT MOVES INTO EAST TENNESSEE. RAIN CHANCES ARE HIGHEST ON
SUNDAY AS A WEAK SHORTWAVE MOVES THROUGH THE OHIO VALLEY TO THE
NORTH. THE FRONTAL BOUNDARY WILL BE NEARLY STATIONARY JUST TO OUR
SOUTH BRINGING OVERRUNNING CONDITIONS. ADDITIONAL RAINFALL THIS
WEEKEND WILL BE 1 TO 2 INCHES WITH ISOLATED HIGHER AMOUNTS. SOME
LOCATIONS ALREADY RECEIVED 1 TO 2 INCHES OVER THE PAST SEVERAL
HOURS DUE TO REPEATED SHOWERS.
THE RAIN WILL END BY MONDAY MORNING AS A TROUGH PUSHES THE COLD
FRONT OUT OF THE REGION. AT THE SURFACE, HIGH PRESSURE SETTLES IN
OVER THE EASTERN U.S. DRY WEATHER IS EXPECTED ALL NEXT WEEK WITH
HIGH PRESSURE DOMINATING THE PATTERN. TEMPERATURES WILL BE NEAR
NORMAL EARLY IN THE WEEK WITH A SLIGHT WARMING TREND LATE IN THE
WEEK.
AVIATION
(18Z TAFS)
ISSUED AT 127 PM EDT SAT OCT 3 2026
RAIN SHOWERS CONTINUE TO DISSIPATE ACROSS THE AREA. PRECIPITATION
WILL FULLY END BY MID AFTERNOON. LOW STRATUS WILL CONTINUE TO
PROMOTE MVFR CONDITIONS THROUGH MUCH OF THE MORNING, GRADUALLY
IMPROVING INTO THE MID AFTERNOON. LOW VFR CIGS ARE EXPECTED TO
PERSIST THROUGH THE PERIOD. THE NEXT ROUND OF SHOWERS IS EXPECTED
TO DEVELOP LATE TONIGHT INTO SUNDAY MORNING. I HAVE INCLUDED LIGHT
LIGHT BEGINNING JUST PRIOR TO DAYBREAK WITH A RETURN TO MVFR CIGS.
DIPS IN VISIBILITY ARE LIKELY, BUT CONFIDENCE IN
TIMING/SIGNIFICANCE IS LOW AT THIS TIME.
PRELIMINARY POINT TEMPS/POPS
CHATTANOOGA AIRPORT, TN 69 79 63 82 / 70 90 20 0
KNOXVILLE MCGHEE TYSON AIRPORT, TN 66 77 62 79 / 50 90 10 0
OAK RIDGE, TN 65 76 59 78 / 50 90 10 0
TRI CITIES AIRPORT, TN 63 72 58 74 / 50 90 20 0
MRX WATCHES/WARNINGS/ADVISORIES
NC...NONE.
TN...NONE.
VA...NONE.
DISCUSSION...MCD
AVIATION...BH
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