A beast in the sky
Trashing about
Like a never-ending rage
An unbeatable force

Many have tried
To tame this beast
By prayer, or by dancing,
Or by mysterious rituals

Bang! Boom!
Crash! Bam!
Not even the bravest
Could face this beast

A flash darts across the sky
As another beast rises to power
With two beasts raging about
Two powers collide

One beast strikes
Then the other deals a blow
One with light
And the other with booms

Two equal forces
Thunder and Lighting
Fight a never-ending battle
With a draw every time

Nature's phenomena
All have a purpose
To keep this world
Going round and round

Thunder and lightning put under the loupe of mythology. Donar (Thursday) raging in the sky to frighten the hell out of folks; no wonder.
I'd say: if you want to smooth this out, don't explain too much.
The phenomenon in itself can give grateful thoughts for a poem or two

Thanks anyway!