What is the poems meaning in "The Wind Begun to Rock the Grass"


The Wind begun to rock the Grass
With threatening Tunes and low--
He threw a Menace at the Earth--
A Menace at the Sky.

The Leaves unhooked themselves from Trees--
And started all abroad
The Dust did scoop itself like Hands
And threw away the Road.

The Wagons quickened on the Streets
The Thunder hurried slow--
The Lightning showed a Yellow Beak
And then a livid Claw.

The Birds put up the Bars to Nests--
The Cattle fled to Barns--
There came one drop of Giant Rain
And then as if the Hands

That held the Dams had parted hold
The Waters Wrecked the Sky,
But overlooked my Father's House--
Just quartering a Tree--

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