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The third and largest explosion, at 10:02 am, was so violent that it was heard 3,110 km (1,930 mi) away in Perth, Western Australia, and the Indian Ocean island of Rodrigues near Mauritius, 4,800 km (3,000 mi) away, where the blast was thought to have been cannon fire from a nearby ship. At 6:44 am, Krakatoa exploded again at Danan, with the resulting tsunami propagating eastward and westward. At 5:30 am, the first explosion was at Perboewatan, triggering a tsunami heading to Telok Betong, now known as Bandar Lampung. On 27 August, four enormous explosions occurred, which marked the climax of the eruption. Between 7:00 pm and 8:00 pm, a small tsunami hit the shores of Java and Sumatra, 40 km (25 mi) away. Ships within 20 km (12 mi) of the volcano reported heavy ash fall, with pieces of hot pumice up to 10 cm (4 in) in diameter landing on their decks. At this point, the eruption was almost continuous, and explosions could be heard every ten minutes.

By 2:00 pm, a black ash cloud could be seen 27 km (17 mi) high. At about 1:00 pm on 26 August, the volcano entered its paroxysmal phase. Climactic phase īy 25 August, the Krakatoa eruptions intensified. When he landed, he noted an ash layer about 0.5 m (1 ft 8 in) thick and the destruction of all vegetation, leaving only tree stumps. He noted three major ash columns (the newer from Danan), which obscured the western part of the island, and steam plumes from at least eleven other vents, mostly between Danan and Rakata. Ferzenaar, investigated the Krakatoa islands. In early August, a Dutch topographical engineer, Captain H. Earthquakes were felt at Anyer, Banten, and ships began to report large pumice masses to the west in the Indian Ocean. The violence of the ongoing eruptions caused tides in the vicinity to be unusually high, and ships at anchor had to be moored with chains. The seat of the eruption is believed to have been a new vent or vents that formed between Perboewatan and Danan. On 24 June, a prevailing east wind cleared the cloud, and two ash columns could be seen issuing from Krakatoa. Įruptions at Krakatoa started again around 16 June, with loud explosions and a thick black cloud covering the islands for five days. Eruptions of ash reached an estimated altitude of 6 km (20,000 ft), and explosions could be heard in Batavia ( Jakarta) 160 km (100 mi) away. Beginning on, steam venting began to occur regularly from Perboewatan, the northernmost of the island's three cones. In the years before the 1883 eruption, seismic activity around the Krakatoa volcano was intense, with earthquakes felt as far away as Australia.

Additional seismic activity was reported until February 1884, but any reports after October 1883 were dismissed by Rogier Verbeek's subsequent investigation into the eruption. Significant additional effects were felt worldwide in the days and weeks after the volcano's eruption. : 63 At least 36,417 deaths are attributed to the eruption and the tsunamis it created.

The acoustic pressure wave circled the globe more than three times. The explosion was heard 3,110 kilometres (1,930 mi) away in Perth, Western Australia, and Rodrigues near Mauritius, 4,800 kilometres (3,000 mi) away. The eruption was one of the deadliest and most destructive volcanic events in recorded history. The 1883 eruption of Krakatoa ( Indonesian: Letusan Krakatau 1883) in the Sunda Strait occurred from 20 May until 21 October 1883, peaking in the late morning hours of 27 August when over 70% of the island of Krakatoa and its surrounding archipelago were destroyed as it collapsed into a caldera. The change in geography after the eruption

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