Detroit Smash

Detroit Smash (デトロイトスマッシュ, Detoroito Sumasshu) is a move performed by All Might using the One For All Quirk.

Description
All Might powers up all his power into his fist and then smashes it into the ground to produce a massive amount of wind pressure, the pressure is strong enough that an updraft is created which in turn creates rain. All Might was first seen using it to save Katsuki from the villain who was attacking him.

On the other hand, Izuku does an uppercut when doing this move, as opposed to punching downwards at the ground like All Might.