- The explosion it caused in 1883 is considered to be the loudest sound ever heard in modern history
- It's eruption was among the most violent volcanic events in recorded history.
- Estimated Volcanic Explosivity Index (VEI) of 6, the eruption was equivalent to 200 megatons of TNT (840 PJ)—about 13,000 times the nuclear yield of the Little Boy bomb (13 to 16 kt) that devastated Hiroshima, Japan, during World War II, and four times the yield of Tsar Bomb (50 Mt), the most powerful nuclear device ever detonated.
- It destroyed 165 villages and towns were destroyed near Krakatoa, and 132 were seriously damaged. At least 36,417 people died, and many more thousands were injured, mostly from the tsunamis that followed the explosion. The eruption destroyed two-thirds of the island of Krakatoa.
Hence, the fishermen and tourists are warned to stay away," Abdi Suardi, head of the Mt Anak Krakatau observation post, stated in Hargopancuran village on Friday.
Suardi reiterated that the volcano remained on alert status due to which the people have been advised to not venture into a radius of one kilometer of the mountain, as the condition of this active volcano is difficult to predict.
In connection with this, fishermen and tourists were urged to remain heedful of the warning to stay away from the volcano in Sunda Strait. In the years before the 1883 eruption, seismic activity around the Krakatau (Krakatoa) volcano was intense, with earthquakes being felt as far away as Australia.