348
FXUS64 KMRX 301101 AAA
AFDMRX
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE MORRISTOWN TN
601 AM EST TUE DEC 30 2025
..NEW UPDATE
KEY MESSAGES
UPDATED AT 558 AM EST TUE DEC 30 2025
- COLD AND DRY TODAY. LOW AFTERNOON RELATIVE HUMIDITY VALUES TODAY
AND WEDNESDAY.
- WIND CHILLS NEAR ZERO ACROSS THE HIGHER ELEVATIONS OF THE EAST TN
MOUNTAINS THIS MORNING. WIND CHILLS IN THE TEENS FOR THE TENNESSEE
VALLEY THIS MORNING.
- MODERATING TEMPERATURES THROUGH THE END OF THE WEEK.
- NEXT ROUND OF PRECIP BY FRIDAY INTO EARLY SATURDAY.
UPDATE
ISSUED AT 558 AM EST TUE DEC 30 2025
REPORTS OF LIGHT COATING OF SNOW ACROSS AREA ROADWAYS ACROSS
SOUTHWEST VIRGINIA AND NORTHEAST TENNESSEE. LIGHT SNOW SHOWERS OR
FLURRIES WILL CONTINUE UNTIL MID-MORNING. SHALLOW MOISTURE AT
850MB COMBINED WITH COLD AIR SQUEEZING OUT LIGHT SNOW. HAVE ISSUED
A SPS FOR POTENTIAL SLIPPERY CONDITIONS DURING THE MORNING RUSH
HOUR.
DISCUSSION
ISSUED AT 1232 AM EST TUE DEC 30 2025
CURRENTLY, CLOUDS HAVE SPREAD ACROSS MUCH OF THE REGION WITH A FEW
LIGHT FLURRIES ACROSS SOUTHWEST VIRGINIA AND NORTHEAST TENNESSEE.
REFS/HREF SHOW THE CLOUDS ERODING QUICKLY BY MID TO LATE MORNING.
MAIN CONCERN TODAY AND WEDNESDAY WILL BE THE LOW DEWPOINTS AND
AFTERNOON RELATIVE HUMIDITY VALUES.
IN THE UPPER LEVELS, A DEEP TROUGH IS OVER THE EASTERN U.S. AT THE
SURFACE, HIGH PRESSURE IS CENTERED OVER THE GREAT PLAINS. TEMPS WILL
BE COLD THIS MORNING WITH LOWS IN THE 20S IN THE TENNESSEE VALLEY
AND IN THE TEENS IN THE HIGHER ELEVATIONS. WINDS ARE MUCH LIGHTER
THAN EARLIER TODAY BUT WILL BE STEADY ENOUGH TO BRING WIND CHILLS IN
THE TEENS THIS MORNING FOR THE TENNESSEE VALLEY AND SINGLE DIGITS OR
NEAR ZERO IN THE HIGHER ELEVATIONS. TEMPS WILL BE BELOW NORMAL TODAY
WITH HIGHS IN THE 30S IN THE TENNESSEE VALLEY. A WARMING TREND WILL
BEGIN WEDNESDAY WITH HIGHS GETTING BACK INTO THE 40S. BY FRIDAY,
HIGHS WILL BE BACK IN THE 50S FOR THE TENNESSEE VALLEY.
DRY WEATHER WILL CONTINUE THROUGH FRIDAY MORNING WITH THE EXCEPTION
OF SOME LIGHT, BRIEF SNOW POSSIBLE IN SOUTHWEST VIRGINIA WEDNESDAY
NIGHT AS A SHORTWAVE MOVES THROUGH THE OHIO VALLEY. LITTLE TO NO
ACCUMULATION IS EXPECTED IN OUR VIRGINIA COUNTIES SINCE THEY ARE ON
THE EDGE OF THIS SYSTEM. SNOW CHANCES ARE MUCH BETTER IN WEST
VIRGINIA.
BY FRIDAY, UPPER LEVEL FLOW BECOMES MORE ZONAL. AT THE SURFACE, A
LOW MOVES INTO THE LOWER MISSISSIPPI VALLEY AND INTO THE SOUTHEAST
FRIDAY NIGHT. THE WARM FRONT WILL LIKELY BE NEAR OR JUST SOUTH OF
THE REGION. IT LOOKS LIKE TEMPS WILL REMAIN WARM ENOUGH EVEN FRIDAY
NIGHT FOR AN ALL RAIN EVENT. THE BEST CHANCE FOR A SOAKING RAIN WILL
BE ALONG AND SOUTH OF I-40. THIS LOOKS LIKE A FAST MOVING SYSTEM
AND THE HIGHEST RAIN CHANCES ARE FRIDAY EVENING AND OVERNIGHT.
THE WEEKEND LOOKS MOSTLY DRY AND MILD WITH RAIN CHANCES TRENDING
DOWN SATURDAY MORNING. HIGHS WILL BE IN THE 50S FOR THE TENNESSEE
VALLEY THIS WEEKEND WHICH IS 5 TO 10 DEGREES ABOVE NORMAL.
AVIATION
(06Z TAFS)
ISSUED AT 1232 AM EST TUE DEC 30 2025
MARGINAL VFR TO LOW VFR CEILINGS ACROSS ALL TAF SITES EARLY THIS
MORNING. REFS/HREF AND LATEST DETERMINISTIC MODELS SHOW THE CLOUD
COVER ERODING QUICKLY BY MID TO LATE MORNING. OTHERWISE VFR
CONDITONS. WINDS WILL BE GENERALLY WESTERLY TO NORTHWEST 5 TO 15
KNOTS.
PRELIMINARY POINT TEMPS/POPS
CHATTANOOGA AIRPORT, TN 41 24 50 29 / 0 0 0 0
KNOXVILLE MCGHEE TYSON AIRPORT, TN 37 23 46 29 / 0 0 0 0
OAK RIDGE, TN 37 23 46 27 / 0 0 0 0
TRI CITIES AIRPORT, TN 33 20 41 29 / 0 0 0 10
MRX WATCHES/WARNINGS/ADVISORIES
NC...NONE.
TN...NONE.
VA...NONE.
DISCUSSION...DH
AVIATION...DH
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