BULLS GAP, Tenn. ˜ Due to inclement weather (rain, snow, cold) in the East Tennessee region during mid-week leading up to the Advance Auto Parts Thunder Series $10,000-to-win “10th Annual Spring Thaw 100,” scheduled for Friday, Feb. 29 and Saturday, March 1 … the decision has been made by track owner Joe Loven and Brad Byrd with the Advance Auto Parts Thunder Series to postpone the Spring Thaw until Friday and Saturday, March 21-22.