system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What is turbulence? And how do airplane pilots sometimes know when they are about to hit turbulence?
gpt
Pilot here...Pilot reports are really the best way to know when it will be bumpy. One plane 100 miles ahead will report turbulence at a certain altitude to ATC and then they will relay the message to other planes. Those other planes can then decide if they want to deviate course or altitude...Also just don't fly into those big puffy white clouds, they are bumpy.