A poem

While sitting in the hammock and watching the wind thrash, I came up with this poem. 

You see it in the trees
Before you ever feel its coming.
You feel it in the branches,
That ever-silent drumming.

The flowers, they bend
To let this force pass.
This force is invisible,
Yet you can see it in the grass.

It has great power, 
Enough to sail great ships.
It is a power very strong,
One that I can mimic with my lips.