East Tennessee State University Arborist, Travis Watson, Says The Weather So Far Is Perfect For Creating Vibrant Fall Colors. He Said The Bright Sunny Days During Fall Helps Give Time For The Sugars In Leaves To Build Up, Then The Cool Nights Trap The Color In The Leaf. He Expects Peak Colors In The Higher Elevations Around October 1st. Longtime Ranger At Bays Mountain Park In Kingsport, Bob Culler, Said Leaves Are Changing Earlier Than Ever But It’s Still Early In The Season To Make Definitive Predictions About When Fall Colors Will Peak And End Around The Tri-Cities.