TREMORS was scripted by the writing team of Brent Maddock and S.S. Wilson in the mid-80s and came from a ominous thought Wilson once had while working out in the desert and wondering what would happen if something was lurking under the sand. I first started noticing this screenwriting duo’s names back in the mid-80s on fun sci-fi comedies like SHORT CIRCUIT (1986) and BATTERIES NOT INCLUDED (1987). So when I read in Fangoria they were going to be working on a sci-fi/horror film, it was promising news. The script made its way around town and eventually fell into producer Gale Anne Hurd’s hands and she raised the money to have it made under her No Frills Film Production banner. Lined up for the director’s chair was Ron Underwood, who had previous to this done after school specials. Friends with Underwood since meeting at USC in the 1970s, Maddock and Wilson has co-written several shorts/educational films for the director, who would be making his theatrical feature film directing debut. Telling the tale of a small desert town fighting off killer sandworms, the film began principal photography in April 1989 in California. In Variety on August 3, 1989 it was announced that Universal Studios had picked up the worldwide distribution rights with an early 1990 release date planned.