Complex sentence: In software development, the uncertainty surrounds the current state of the project, and in the future the uncertainty decreases, whereas in hurricane forecasting the current location of the storm is certain, and the future path of the storm becomes increasingly uncertain.
Split into simpler sentences: In software development, the uncertainy surrounds the current state of the project, and in the future the uncertainty decreases. In hurricane forecasting, the current location of the storm is certain, and the future path of the storm is what is increasingly uncertain.