Becuase thunder is the noise that lighting makes.
If you had that ability in real life yeah in the game no because the game has it backwords
No. only these moves.
GrassWhistle, Growl, Hyper Voice, Metal Sound, Perish Song, Roar, Sing, Sonicboom, Supersonic, Screech, Snore, Uproar, Roar Of Time, Bug Buzz, Chatter, and Heal Bell.