Update 7:17 p.m.:
(WBIR) Racing got underway once again after the race was red-flagged due to rain.
Updated story Sunday 3:50 p.m.:
(WBIR) The rain has gotten in the way of Sunday's NASCAR race once again.
The Food City 500 stopped around 3:50 p.m. due to weather. So far, they've raced 125 of 500 laps.
Matt Kenseth currently leads the race, followed by Jamie McMurray and Brad Keselowski.
WCYB reports the rain should move out of the track area by 4:30 p.m. Sunday.
(WBIR) Sunday's NASCAR race got underway just before 3 p.m., after a nearly two-hour rain delay.
University of Tennessee's Coach Butch Jones and Virginia Tech's Frank Beamer served as the co-grand marshals for the Food City 500.
(USA TODAY) The weather has become the central character again in NASCAR's early season.
The Food City 500 at Bristol Motor Speedway is being delayed by rain Sunday afternoon.
The scheduled green flag was for 1:13 p.m. (Fox). NASCAR has scheduled driver introductions for 2:05.
The National Weather Service forecasts a 90 percent chance of showers Sunday afternoon and evening with a predicted high of 54. Monday's forecast calls for 60 percent chance of rain.
If the race is postponed until Monday, the green flag is scheduled for noon.
NASCAR's crown jewel -- the season-opening Daytona 500 -- was delayed by rain for more than six hours on Feb. 23 and finally was completed under the lights. Dale Earnhardt Jr. won his second 500 at 11:18 p.m.
The rain delay started just after 2 p.m. and began a red flag that lasted six hours, 21 minutes and 40 seconds and brought intermittent storms and a tornado warning.
NASCAR has the Air Titan track drying system at the .533-mile Bristol oval and it would take about an hour to dry the surface if there is a big enough window to get the race started. The track also is equipped with lights.
Denny Hamlin turned the fastest qualifying lap — 129.991 mph — in Bristol Cup history Friday to win the pole.
Here's the starting lineup:
1. (11) Denny Hamlin, Toyota
2. (2) Brad Keselowski, Ford
3. (20) Matt Kenseth, Toyota
4. (22) Joey Logano, Ford
5. (9) Marcos Ambrose, Ford
6. (24) Jeff Gordon, Chevrolet
7. (18) Kyle Busch, Toyota
8. (16) Greg Biffle, Ford
9. (31) Ryan Newman, Chevrolet
10. (5) Kasey Kahne, Chevrolet
11. (48) Jimmie Johnson, Chevrolet
12. (99) Carl Edwards, Ford
13. (41) Kurt Busch, Chevrolet
14. (88) Dale Earnhardt Jr., Chevrolet
15. (15) Clint Bowyer, Toyota
16. (38) David Gilliland, Ford
17. (1) Jamie McMurray, Chevrolet
18. (26) Cole Whitt, Toyota
19. (34) David Ragan, Ford
20. (42) Kyle Larson, Chevrolet
21. (17) Ricky Stenhouse Jr., Ford
22. (47) A J Allmendinger, Chevrolet
23. (43) Aric Almirola, Ford
24. (95) Michael McDowell, Ford
25. (13) Casey Mears, Chevrolet
26. (3) Austin Dillon, Chevrolet
27. (4) Kevin Harvick, Chevrolet
28. (27) Paul Menard, Chevrolet
29. (78) Martin Truex Jr., Chevrolet
30. (51) Justin Allgaier, Chevrolet
31. (40) Landon Cassill, Chevrolet
32. (98) Josh Wise, Chevrolet
33. (23) Alex Bowman, Toyota
34. (7) Michael Annett, Chevrolet
35. (36) Reed Sorenson, Chevrolet
36. (10) Danica Patrick, Chevrolet
37. (14) Tony Stewart, Chevrolet
38. (55) Brian Vickers, Toyota
39. (32) Travis Kvapil, Ford
40. (83) Ryan Truex, Toyota
41. (30) Parker Kligerman, Toyota
42. (66) Joe Nemechek, Toyota
43. (33) Timmy Hill, Chevrolet