Polysyndeton is the use of multiple conjunctions (like "and" or "or") in close succession, often with no commas. This creates a sense of urgency, speed, and overwhelming force.
In the sentence, the repetition of "and" emphasizes the chaotic and powerful nature of the storm. This creates a feeling of immediacy and intensity.
Let me know if you'd like to discuss any other literary devices you might find in this passage!