What is the A City's Death by Fire about, and what is the meaning of a city's death by fire by Derek Walcott?

The poem “A City's Death by Fire” by Derek Walcott is a semi-autobiographical poem, a recollection of the Great Fire of 1948 in Central Castries (the capital and largest city of St. Lucia). The Great Fire attacked three quarters of the town and left more than 2,000 people homeless.