"Centers on the events leading up to the cataclysmic 1980 eruption of Mount St. Helens in Washington, with the story beginning on the day volcanic activity started on March 20, 1980, and ending on the day of the eruption, May 18, 1980."
Art Carney
as Harry Truman
David Huffman
as David Jackson
Cassie Yates
as Linda Steele
Albert Salmi
as Clyde Whittaker
Ron O'Neal
as Otis Kaylor
Tim Thomerson
as Sheriff Wayne Temple
Bill McKinney
as Kilpatrick
Redmond Gleeson
as Hendricks
Nehemiah Persoff
as Mr. Ellison
Brendan Burns
as David Crockett
Henry Darrow
as Lloyd Wagner
Danny Chambers
as Col. Arnholt
Biff Manard
as Dr. Romarantin
Joseph Benti
as Newscaster
Clark Christiansen
as Reeder
Frank Ellis
as Schmitty
Sean Abbott
as Chad
Denny Arnold
as Curry
BJ Davis
as Bedsoe
Patricia King
as Patty Jean
Corky Courson
as Bandleader
Julie Phillips
as Pamela
Mary Jane Heelebuyck
as Cook
Peter Bellwood
as English Reporter
Susan Gelb
as Photographer
Steve Sheldon
as Shopkeeper
Stacie Joyce
as Ginny
Murl Lee Morris
as Radio Operator
William Bartman
as Resnick
Diana Fiske
as Cindy
Carol Bryant
as Mrs. Ellison
Ray Lykins
as Stunt Man
Eddie Braun
Clarence Altkin
as Reporter #1
John Boylen
as Reporter #2
Renee Braswell
as Girl on the Street
Julie Rice Davis
as Stunt Girl
Beau Davis
as Stunt Baby
Dennis Murphy
as Logger #1
Wiley Ellis
as Logger #2
Randy Nawalaniec
as Logger #3
Van Hurst
as Guardsman
Thomas Lovingier
as News Director
Tony Scalese
as Man Watching TV
Don LaFontaine
as Narrator (voice) (uncredited)
Ernest Pintoff
Director
Michael T. Murphy
Story
Larry Sturholm
Screenplay
Larry Ferguson
Peter S. Davis
Producer
William N. Panzer
Tom Jacobson
Associate Producer
Otto Sieber
Executive Producer
Jacques Haitkin
Director of Photography
George Berndt
Editor
Casting
Michael Erler
Art Direction
Cyd Smyllie
Set Decoration
Doris Bettencourt
Costume Design
Makeup Artist
Unit Production Manager
Richard Albain
Special Effects
Second Unit Director
Stunt Coordinator
Stunt Double
Stunts
Goblin
Original Music Composer
Fabio Pignatelli
Antonio Marangolo
Agostino Marangolo
Maurizio Guarini