Well I found some info on Tsunamis in the magazine: “Heeding Advance Warning Can Save Your Life! Watchtower Announcing Jehovah’s Kingdom (Public)—2016”, you can find it in JW. Org. In recent news also found in this same site called: “Earthquakes and Tsunami Devastate Sulawesi, Indonesia” mentions that Tsunamis affect thousands of people. Tsunamis are huge waves that can come to shore to break and give Disorder to the area it’s in. People suffer for survival and sometimes die because of Tsunamis.
Hope this helps :) If you need anything else just call out for me