The poem describes a storm about to come. The poet give details of the preceding moments and what the scenary becomes with and after the rain.
A moment the wild swallows like a flight
The poet here uses the hearing, that allows him to listen to the movement and strenght of the wind originated by the storm that it is coming
Of withered gust-caught leaves, serenely high,The leaves are being taken off the trees and carried to the sky. He refers to the sight sense, as he is watching the leaves going away. This line describe the begining of the storm
Toss in the windrack up the muttering sky.
The poet uses the hearing, mentioning the sounds of the leaves being carried to the sky by the wind, and, also, the sound of the wind by itself.
The leaves hang still. Above the weird twilight,Here we can imagine the colours provided by an aproaching storm. It is something dark, mixtured with the colours of the sunset (the weird twilight). The storm is getting closer and closer.
The hurrying centres of the storm unite
The storm is getting heavier, with strong wind. The poet refers to the sounds heard by the storm
And spreading with huge trunk and rolling fringe,
Each wheeled upon its own tremendous hinge,
Both lines represent the movement of the rain, shaking and affecting all the elements around. Here, this movement is represented by the words rolling fringe and trunk and the senses refered to are hearing and sight
Tower darkening on. And now from heaven’s height,
Here, the storm gets its peak, through the darkness and strength. The author compares it to the heaven’s power (heaven’s height), showing the violence of the rain.
With the long roar of elm-trees swept and swayed,
And pelted waters, on the vanished plain
Here we can see the caractheristic sound of the storm, the strong movement of the water and wind. The words which best represent it are “long roar of elm-trees swept and swayed” ; “vanished plain”
Scanning the first four lines:
- / - / - / - / - /
A moment the wild swallows like a flight
- / - / - / - / - /
Of withered gust-caught leaves, serenely high,
- / - / - / - / - /
Toss in the windrack up the muttering sky
- / - / - / - / - /
The leaves hang still. Above the weird twilight
The rhyme scheme is abbaaaccdefggef
Iambic pentameter