Droughts, earthquakes and wildfires are natural disasters that occur in California. But the Golden State may have to prepare for another climatic event that hasn’t occurred since the 19th century. A new study from “Science Advances” says climate change is increasing the chances of a California megaflood, a catastrophic flooding event that has the potential to inundate neighborhoods and cities with high waters for miles and miles. Climate scientist Dr. Daniel Swain and his co-author Xingying Huang developed two megastorm scenarios called ARkHist and ARkFuture. ARkHist is based on historical climate data while ARkFuture considers climate change.