Pedastal

You know, this was a fragmented piece in my notes that I polished a little but.. it feels completely unfinished! I'll come back to it later.

The skies are gray   but alive with life
and light.
Skeleton trees dance to and fro,
supple in the whispering wind that
soon will be a roar.
The atmosphere is thick with unfell drops
and moisture fills my lungs.
With arms spread wide   atop this hill,
I welcome the wall of gray,
turning black and
thundering 'cross the moor;
rolling over ravaged lands
as no other is able.

At last, the storm has come.

Author's Note

Fourth line from the bottom " 'cross " is shortened from "across" but I can't tell if I punctuated it correctly. Does anyone know?