543  
FXUS64 KMRX 072349  
AFDMRX  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE MORRISTOWN TN  
749 PM EDT MON JUL 7 2025  
   
..NEW AVIATION  
 
   
SHORT TERM AND LONG TERM  
 
(THIS EVENING THROUGH NEXT MONDAY)  
ISSUED AT 135 PM EDT MON JUL 7 2025  
 
KEY MESSAGES:  
 
1. SHOWERS AND STORMS WILL BE ISOLATED AGAIN TODAY IN THE TENNESSEE  
VALLEY. STARTING TOMORROW, SHOWERS AND STORMS WILL BE MORE SCATTERED  
AS A TROUGH IN THE MIDWEST SLOWLY MOVES CLOSER.  
 
2. HIGHER AFTERNOON/EVENING RAIN CHANCES WILL CONTINUE THROUGH AT  
LEAST FRIDAY. LOWER CHANCES SEEM POSSIBLE FOR THE WEEKEND WITH A  
RIDGE POSSIBLY BUILDING IN.  
 
DISCUSSION:  
 
OVERALL, SHOWER AND STORM ACTIVITY WILL BE FAIRLY ISOLATED AGAIN  
TODAY IN THE TENNESSEE VALLEY. BETTER CHANCES OF MORE SCATTERED  
ACTIVITY IN THE CUMBERLAND PLATEAU, SOUTHWEST VIRGINIA AND NORTHEAST  
TENNESSEE THIS AFTERNOON/EVENING WHERE THE CU FIELD IS ALREADY  
LOOKING MORE ROBUST. TOMORROW AFTERNOON/EVENING, SHOWER AND STORM  
ACTIVITY WILL BE MORE SCATTERED EVEN IN THE TENNESSEE VALLEY AS A  
TROUGH LINGERING OVER THE MIDWEST SLOWLY DRIFTS CLOSER TO OUR  
REGION. BY WED/THURS, DEEP LAYER MOISTURE ADVECTION WILL BE PRESENT  
WITH A SURFACE HIGH OVER THE ATLANTIC BRINGING SOUTHERLY FLOW AT THE  
SURFACE AND A TROUGH ALOFT BRINGING SOUTHERLY FLOW ALOFT. PWAT  
VALUES WILL BE HIGH PEAKING AROUND 2 INCHES BY THURSDAY. THEREFORE,  
SHOWERS AND STORMS WILL BE SCATTERED TO NUMEROUS WED THROUGH FRI  
MAINLY IN THE AFTERNOON AND EVENING HOURS. WITH MANY AREAS STARTING  
TO DRY OUT AND STORM LEVEL MOTION AROUND 15 KNOTS EXPECTED LATER  
THIS WEEK, WIDESPREAD FLOODING IS NOT EXPECTED BUT LOCALIZED  
FLOODING WILL BE POSSIBLE. INSTABILITY WILL BE HIGHER BY WED/THURS  
TIMEFRAME WITH CAPE AROUND 1500 TO 2500 J/KG POSSIBLE SO A FEW  
STRONG TO SEVERE STORMS CANNOT BE RULED OUT NEAR MAX HEATING.  
 
THERE IS HOPE FOR A RIDGE POSSIBLY BUILDING IN THIS WEEKEND. SO WE  
MAY BE GETTING LOWER RAIN CHANCES FOR THAT TIMEFRAME. HIGHS WILL BE  
MOSTLY IN THE LOWER 90S FOR THE TENNESSEE VALLEY.  
 
 
   
LONG TERM  
 
 
   
AVIATION  
 
(00Z TAFS)  
ISSUED AT 742 PM EDT MON JUL 7 2025  
 
CONVECTION HAS BECOME MORE ISOLATED IN NATURE THIS EVENING AND  
ACTIVITY WILL CONTINUE TO TREND TO LITTLE TO NONE OVERNIGHT.  
ADDITIONAL ISOLATED TO WEAKLY SCATTERED SHOWERS AND STORMS ARE  
EXPECTED TOMORROW AFTERNOON. OVERALL, CONDITIONS WILL  
PREDOMINATELY REMAIN VFR OUTSIDE ANY CONVECTIVE ACTIVITY BUT  
OVERALL POTENTIAL IS LOW SO ONLY VICINITY SHOWERS HAVE BEEN  
INCLUDED THIS FAR OUT.  
 
 
   
PRELIMINARY POINT TEMPS/POPS  
 
CHATTANOOGA AIRPORT, TN 73 94 72 93 / 10 50 20 70  
KNOXVILLE MCGHEE TYSON AIRPORT, TN 73 93 72 91 / 10 50 20 70  
OAK RIDGE, TN 71 92 70 91 / 10 50 20 70  
TRI CITIES AIRPORT, TN 68 89 69 88 / 20 50 30 70  
 
 
   
MRX WATCHES/WARNINGS/ADVISORIES  
 
NC...NONE.  
TN...NONE.  
VA...NONE.  
 
 
 
 
SHORT TERM...MCD  
LONG TERM....MCD  
AVIATION...KRS  
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