The annual Boulder fireworks show is set for 8:30 p.m. on the Fourth of July.

The event, which is free and open to the public, will be held at Folsom Field on the University of Colorado campus. Gates open at 8 p.m.

The fireworks show, called Ralphie's Independence Day Blast, has been held at the CU stadium since 1941. It was canceled in 2012 because of fire danger.

In a news release, police said the use and possession of fireworks within city limits is illegal. Police are increasing patrols the week of the Fourth of July.

Free HOP and Buff Bus service will be available starting at 10 a.m. July 4 and ending at 11 p.m. from downtown city parking garages and 29th Street to the field and back. Parking is available at CU in the lot off Regent Drive and in the Kittredge/Fiske Planetarium area.

Many items are not permitted inside the stadium, such as hard-sided containers of any size or style, bags or containers larger than 12 inches by 12 inches by 12 inches, alcohol, and glass bottles or cans. All non-alcoholic beverages brought into the stadium must be in factory-sealed plastic containers.

Other prohibited items include: umbrellas, firearms and weapons, noisemakers, signs or flags on sticks, unapproved signs or banners, footballs, Frisbees, inflatable balls, fireworks, and animals not being used for people with disabilities.

For more information visit boulder4thofjuly.com.