On typical Wednesdays I usually try to direct you to a useful web site or blog that discussed our topic of the week. When it comes to people-vs-nature plots, the web is particularly unhelpful.
Try it: Type "people vs. nature" or "people-vs-nature plot" into your search engine and see what happens. You will turn up some interesting (and perhaps useful) plot diagrams, some definitions, and some lists of different kinds of plots, but a solid, thorough discussion of the people-vs-nature conflict is hard to come by outside of academic discussions. Even those tend to be limited to a single work.
While a web search on this topic may have some value, I suggest you sit down with a wise friend and brainstorm lists of your favorite people-vs-nature plots. Start with kids' and young adult stories (I still remember the excitement of the shipwreck in THE BLACK STALLION) and work forward.
Looking at what intrigues you in the p-vs-n stories you remember may be the best device for putting you in the mood to write the next great natural conflict story.