Thunder is a 1929 American synchronized sound melodrama film starring Lon Chaney and directed by William Nigh.

[3] The majority of the picture portion of Thunder is now considered lost, with only a half a reel of the entire footage known to survive.

[4] Lon Chaney plays Grumpy Anderson, a railroad engineer with an obsession for running his train on time.

By the story's end, the engineer restores their faith in him and validates his obsession by forcing his train through a flood to bring badly needed Red Cross supplies to the victims.

[6] Chaney's illness combined with his throat cancer led to his death two months after the release of his last film, and only talkie, 1930's The Unholy Three.