Helen Hunt
Dr. Jo Harding
Bill Paxton
Bill Harding
Cary Elwes
Dr. Jonas Miller
Jami Gertz
Dr. Melissa Reeves
Philip Seymour Hoffman
Dustin Davis
Lois Smith
Meg Greene
Alan Ruck
Robert 'Rabbit' Nurick
Sean Whalen
Allan Sanders
Scott Thomson
Jason 'Preacher' Rowe
Todd Field
Tim 'Beltzer' Lewis
Joey Slotnick
Joey
Wendle Josepher
Haynes
Jeremy Davies
Laurence
Zach Grenier
Eddie
Gregory Sporleder
Willie
Patrick Fischler
The Communicator
Nicholas Sadler
Kubrick
Ben Weber
Stanley
Anthony Rapp
Tony
Erik LaRay Harvey
Eric
Abraham Benrubi
Bubba
Jake Busey
Mobile Lab Technician
Melanie Hoopes
Patty
Alexa PenaVega
Jo Harding age 6
J. Dean Lindsay
Dean
Dan Kelpine
Diner Mechanic
Sharonlyn Morrow
Waitress
Richard Lineback
Mr. Thorton
Rusty Schwimmer
Mrs. Thorton
Taylor Gilbert
Bryce, NSSL Scientist
Bruce Wright
Murphy, NSSL Scientist
Gary England
TV Meteorologist #1
Jeff Lazalier
TV Meteorologist #2
Rick Mitchell
TV Meteorologist #3
Paul Douglas
Bodger
Samantha McDonald
Drive-in Girl
Jennifer L. Hamilton
Drive-In Girl
Anneke de Bont
Farm Girl
Darryl Cox
Four Corners Mechanic (uncredited)