Complex sentence: Hurricane Andrew was a Category 5 Atlantic hurricane that struck South Florida in August of 1992, and was the most destructive hurricane in Florida's history as well as the costliest hurricane in United States history until being surpassed by Katrina in 2005.
Split into simpler sentences: Hurricane Andrew was a Category 5 Atlantic hurricane that struck South Florida in August of 1992, and was the most destructive hurricane in Florida's history. The storm also ranked as the costliest hurricane in United States history until being surpassed by Katrina in 2005.