Scattered thunderstorms are expected throughout Friday in Talladega, Alabama.
Nascar Nationwide and Sprint Cup practices are likely to be affected.
Later this afternoon and evening, severe storms are forecast, including damaging winds, hail, and possibly including a tornado.
As campers are particularly vulnerable, Talladega has suggested to campers at the speedway “If the storms become severe the American Red Cross recommends you seek shelter in a vehicle, fasten your seat belt and turn your motor on”.