Gas Prices Have Jumpted By Double Digits This Past Week In The Tri Cities. Aaa East Tennessee Showed An Increase In Gas Prices By 15 Cents Per Gallon In Both Kingsport And Bristol Following Five Consecutive Weeks Of Falling Prices. The Average Price Across The Region Hovered Around 2.59 Cents A Gallon. Aaa Spokeswoman Stephanie Milani Said The Jump Could Be A Corrective Measure On The Part Of Retailers Getting Prices In Line With Crude Oil Trends.