A storm threat is looming over the chicagoland area, potentially impacting nascar events and other activities such as concerts and sports games. The severity of the weather threat has prompted nascar to consider adjustments, although it is unclear if the chicagoland event will be affected in the same way as other races, such as the daytona 500. The chicagoland event is part of nascar's return to the area, which is also hosting other racing events.