Squirm

Squirm is a 1976 American natural horror film written and directed by Jeff Lieberman in his feature-film directing debut, starring Don Scardino, Patricia Pearcy, R. A. Dow, Jean Sullivan, Peter MacLean, Fran Higgins, and William Newman. The film takes place in the fictional town of Fly Creek, Georgia, which becomes infested with carnivorous worms after an electrical storm. Lieberman's script is based on a childhood incident in which his brother fed electricity into a patch of earth, causing earthworms to rise to the surface.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.