Final answer:
The comparison of the night storms to a Shakespearean tempest is a metaphor, as it directly compares two unlike things without using comparative words.
Step-by-step explanation:
The statement "The storms during the night remind me of a Shakespearean tempest" is an example of a metaphor. A metaphor is a figurative language device that makes a direct comparison between two unlike things without using "like" or "as." In this case, the night storms are directly compared to a Shakespearean tempest, implying that they share similar dramatic and intense qualities without using comparative terms.