The cataclysmic explosion was heard in Perth in Western Australia , about 1,930 miles ( 3,110 km ) to the south , as well as the island of Rodrigues near Mauritius , about 3,000 miles ( 4,800 km ) to the west .
The sound was heard as far away as Perth in Australia ( 3,500 km ; 2,200 miles ) , and the island of Rodrigues near Mauritius ( 4,800 km ; 3,000 miles ) .