Short reaction sounds like this one circulate widely on soundboards and in short-form video editing, where a familiar exclamation combined with a weather effect can signal surprise without any explanation. The red thunder label appears to refer to the dramatic, colored storm sound layered beneath the voice rather than to a specific show or character, and no single original source is clearly documented for this clip. That ambiguity has not slowed its use, because editors recognise the combination instantly: a human reaction first, then a powerful rumble that makes the moment feel bigger than it is.