The loudest sound in recorded human history was the volcanic eruption of Krakatoa (Krakatau) on August 27, 1883.
The eruption, which occurred on the Indonesian island, produced a sound estimated to be over 180 decibels at 100 miles away. To put that into perspective, sounds over 140 decibels can cause immediate physical pain and permanent hearing damage. The Krakatoa eruption was significantly louder.
Impact of the Sound
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Audibility: The sound was reportedly heard as far away as Rodrigues Island near Mauritius, about 3,000 miles (4,800 km) west, and Alice Springs, Australia, roughly 2,200 miles (3,500 km) east.
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Atmospheric Pressure Waves: The eruption generated atmospheric pressure waves that traveled around the globe multiple times. Barographs around the world registered the passage of these waves for days after the event.
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Hearing Damage and Potential Rupture: The sheer intensity of the sound near Krakatoa would have instantly ruptured eardrums and caused severe internal injuries to anyone in close proximity.
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Tsunamis: The eruption also triggered massive tsunamis that devastated coastal regions, contributing to the widespread loss of life.
The Krakatoa eruption serves as a stark reminder of the immense power of natural phenomena and its potential to impact the global environment.
