Thunderstorm (サンダーストーム Sandā Sutōmu?) is a technique in Kingdom Hearts Birth by Sleep and Kingdom Hearts Birth by Sleep Final Mix. The attack consists of launching small salvos of electrical bursts at targets.
In Kingdom Hearts Birth by Sleep, Thunderstorm is a Shotlock that has a maximum level of 4 and max lock of 5. After the initial volley, the player can perform extra attacks by pressing at a specific time to fire additional blasts. The more accurate the player's button press, the more bursts will be fired.