Clouds roar, rant and rage
crying out their pain.
Fluids held within release.  
The same is true of people  

You can always tell
when rains about to fall
because of the darkness in the clouds.
Likewise you can always tell
when a person's about to cry
because of the sadness in their eyes.

Conclusions -
Whether it's tears or rain,
the manifestation of pain
results the same.