Each of the poem's five stanzas contains a sonnet with a closing couplet. It is written in iambic pentameter in terza rima formation. The rhyming pattern follows the form aba bcb cdc ded ee. According to Shelley's note, "this poem was conceived and chiefly written in a wood that skirts the Arno, near Florence, and on a day when that tempestuous wind, whose temperature is at once mild and animating, was collecting the vapours which pour down the autumnal rains. They began, as I foresaw, at sunset with a violent tempest of hail and rain, attended that magnificent thunder and lightning peculiar to the Cisalpine regions." It was written in the autumn of 1819 and published the following year. It is clear from the flamboyant language used in the opening lines of the poem that Shelley is not just writing about the seasons or the weather. The themes of...