You remind me of thunder

You remind me of thunder.
So loud.
So startling.
So alarming.
So formidable.
But you cannot hurt me.

You stand so tall and roar so loud,
Scaring all with your rumble.
It's the lightning that does the real job, though,
Striking down with great vengeance
on those tiny ant-like people.
You scamper close behind,
Growling down at them for affect.
But you cannot hurt me.

Sometimes you snap,
cracking loudly.
Though other times you hold it in,
Letting out a low snarl.
You act like you're bigger than you are,
Yelling at the top of your lungs.
Many people dash for shelter,
Obeying your every command.
But you cannot hurt me.

Oh dad, you remind me of thunder,
Hiding behind the pleasant rain.
But you cannot hurt me.