The great science fiction writer Sir Arthur C. Clarke (Rendezvous with Rama, 2001: A Space Odyssey) is perhaps the most famous foreigner living in Sri Lanka. Long considered a visionary for his works, Clarke published a book about Sri Lanka in 1957 titled, The Reefs of Taprobane. As noted in the Hindustan Times:

In an open letter sent to his friends, the British author says that in Chapter 8 of the book he had described a tidal wave attack on Galle harbour in 1883, following the eruption of Krakatoa, in roughly the same part of the Indian Ocean as the epicentre of the December 26, 2004 sea quake, namely, off Sumatra in Indonesia.

The loss of life in Galle harbor is nearing 8000 and is one of the worst hit areas. Another claim in the article is the following:

In more recent times, he is said to have predicted, in one of his numerous science-fiction/futuristic writings, the Al-Qaeda attack on the United States on September 11, 2001.

This quote is not backed-up however, and I can’t think of which work they might be referring to. If any reader knows, then please comment.