The main theme could be passion. The storm often symbolizes the intense emotions and hidden desires that the characters experience during the events of the story.
In 'the storm short story', I think the main theme is the power of nature and how it affects human nature. The storm is a powerful force that is beyond human control. This can be seen as a metaphor for the uncontrollable aspects of human emotions and relationships. The characters in the story are influenced by the storm, both physically and emotionally. Their actions and decisions are often a response to the storm's presence. It shows how humans are at the mercy of nature, but also how nature can bring out the true nature of humans, whether it's their courage, fear, or hidden desires.