281  
FXUS64 KMRX 190537  
AFDMRX  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE MORRISTOWN TN  
137 AM EDT MON OCT 19 2026  
   
..NEW DISCUSSION, AVIATION  
 
   
KEY MESSAGES  
 
UPDATED AT 136 AM EDT MON OCT 19 2026  
 
- CHILLY STARTS TO THE DAY WITH SOME PATCHY FROST POSSIBLE OVER THE  
NEXT COUPLE OF MORNINGS.  
 
- DRY WEATHER DOMINATES THE REST OF THIS WEEK WITH A WARMING  
TREND. HUMIDITY REMAINS ON THE LOWER SIDE.  
 
 
   
DISCUSSION  
 
ISSUED AT 136 AM EDT MON OCT 19 2026  
 
ANOTHER CHILLY MORNING THIS MORNING, BUT WITH SLIGHT IMPROVEMENT IN  
READINGS BY A COUPLE OF DEGREES OR SO. DRY AIR AND CALM CONDITIONS  
WILL ALLOW AREAS OF FROST FOR PARTS OF THE MOUNTAINS, PLATEAU, AND  
NORTHEAST TN INTO SOUTHWEST VA AGAIN.  
 
FOR THE WEEK AHEAD, LONGWAVE TROUGHING WILL REMAIN WELL INTO CANADA  
WITH RIDGING POKING NORTH BETWEEN A CLOSED UPPER LOW OFF OF THE MID-  
ATLANTIC AND ANOTHER CLOSED LOW OFF OF THE WEST COAST. THE WESTERN  
LOW EVENTUALLY PHASES WITH THE MEAN FLOW, MEANWHILE THE ATLANTIC ONE  
THAT WILL BRING COASTAL ISSUES TO PARTS OF THE EASTERN SEABOARD DUE  
TO HARDLY ANY MOVEMENT, WILL BECOME ENVELOPED AND SHUNTED EAST  
TOWARDS THE END OF THE WEEK. NO IMPACTS HERE EXCEPT PERSISTENT UPPER  
LEVEL RIDGING AND SURFACE HIGH PRESSURE.  
 
HIGHS BREAKING 70 RETURN FOR MUCH OF THE VALLEY LATER THIS  
AFTERNOON. HIGHS WILL THEN REMAIN IN THE LOW TO MID 70S RANGE THE  
REST OF THE FORECAST PERIOD INTO NEXT WEEKEND. A GENERAL  
WASH/RINSE/REPEAT EACH DAY WITH LIGHT WINDS, MOSTLY SUNNY/CLEAR  
SKIES, LOW HUMIDITY, AND NO PRECIPITATION FOR AT LEAST THE  
FORESEEABLE FUTURE.  
 
 
   
AVIATION  
 
(06Z TAFS)  
ISSUED AT 136 AM EDT MON OCT 19 2026  
 
VFR CONDITIONS WITH LIGHT WINDS AND DRY WEATHER TO CONTINUE.  
 
 
   
PRELIMINARY POINT TEMPS/POPS  
 
CHATTANOOGA AIRPORT, TN 71 47 73 48 / 0 0 0 0  
KNOXVILLE MCGHEE TYSON AIRPORT, TN 72 43 73 45 / 0 0 0 0  
OAK RIDGE, TN 73 43 73 45 / 0 0 0 0  
TRI CITIES AIRPORT, TN 72 37 73 39 / 0 0 0 0  
 
 
   
MRX WATCHES/WARNINGS/ADVISORIES  
 
NC...NONE.  
TN...NONE.  
VA...NONE.  
 
 
 
 
DISCUSSION...KS  
AVIATION...WELLINGTON  
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