460  
FXUS64 KMRX 180235  
AFDMRX  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE MORRISTOWN TN  
935 PM EST SUN FEB 17 2019  
   
DISCUSSION
 
 
WIDESPREAD PRECIPITATION ACROSS THE SOUTHERN APPALACHIANS THIS  
EVENING. RAINFALL AMOUNTS OVER THE LAST 6 HOURS OR SO HAVE RANGED  
FROM AROUND 0.5-1.0 INCHES WITH THE HIGHER AMOUNTS ACROSS  
SOUTHEAST TENNESSEE AND SOUTHWEST NORTH CAROLINA. THE 500 MB  
SHORTWAVE TROUGH IS CURRENTLY LOCATED ACROSS THE TENNESSEE RIVER  
VALLEY MOVING TO THE NORTHEAST. THE SURFACE COLD FRONT IS NOW  
MOVING OFF THE CUMBERLAND PLATEAU INTO THE VALLEY. WIDESPREAD  
PRECIPITATION WILL CONTINUE ACROSS THE SOUTHERN APPALCHIANS  
THROUGHOUT THE EVENING INTO THE OVERNIGHT HOURS. LATEST RADAR  
IMAGERY INDICATES SOME ENHANCEMENT ACROSS THE NORTHERN CUMBERLAND  
PLATEAU AND INTO SOUTHWEST VIRGINIA. THESE AREAS DID RECEIVE THE  
HIGHER RAINFALL TOTALS EARLIER THIS MORNING AND THIS WILL BE AN  
AREA TO WATCH FOR SOME LOCALIZED FLOODING THIS EVENING AND INTO  
THE OVERNIGHT HOURS. COLDER AND DRIER AIR WILL ADVECT IN BEHIND  
THE SYSTEM LATER TONIGHT LEADING TO A RATHER ABRUPT CUT OFF TO THE  
PRECIPITATION AROUND 08-10Z FOR MOST LOCATIONS. TEMPERATURES WILL  
DROP OFF RATHER QUICKLY LATE TONIGHT WITH LOWS IN THE MID AND  
UPPER 30S.  
 

 
   
PRELIMINARY POINT TEMPS/POPS
 
 
CHATTANOOGA AIRPORT, TN 39 53 34 43 / 90 0 0 80  
KNOXVILLE MCGHEE TYSON AIRPORT, TN 39 49 28 44 / 100 10 0 80  
OAK RIDGE, TN 37 50 30 44 / 100 10 0 80  
TRI CITIES AIRPORT, TN 37 49 26 46 / 90 10 0 50  
 

 
   
MRX WATCHES/WARNINGS/ADVISORIES
 
 
NC...NONE.  
TN...NONE.  
VA...NONE.  

 
 

 
 
MA  
 
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