SKYWALKER, EXPLOSION - NEARBY HEAVY EXPLOSION

This's a Skywalker Sound sound effect, probably designed by Gary Rydstrom.

Movies

 * China: The Wild East (1994) (Used for a nuclear explosion)
 * The Iron Giant (1999)
 * Saving Private Ryan (1998)
 * Star Wars: Episode III - Revenge of the Sith (2005) (Accents some explosions, more or less small, on Mustafar)
 * Star Wars: Episode VIII - The Last Jedi (2017) (Used for the gate's explosion from the battering ram cannon)
 * Terminator 2: Judgment Day (1991) (debut? Used for the Nuclear Nightmare)

Audio Samples
The "Atomic Holocaust" sequence and a big electronic explosion from the Iron Giant in "The Iron Giant" are good sources to sample this explosion.