Anaphora is the repetition of a word or phrase at the beginning of successive clauses or sentences. In this passage, the repeated phrase is "there was not a", followed by different words.
* "There was not a interval in..."
* "There was not a crash in..."
* "There was not a fire in..."
* "There was not a rain in..."
This repetition emphasizes the intensity and relentlessness of the storm, creating a sense of overwhelming power.
While not as prominent, the passage also uses asyndeton, the omission of conjunctions, which further emphasizes the rapid succession of events in the storm.