Found in an anthology of supernatural encounters by the famous - I Saw a Ghost edited by Ben Noakes (Weidenfeld, 1986)- this account by Vincent Price.
On 15 November 1958 I had an extraordinary glimpse of the unknown whilst on a flight between Hollywood to New York I was immersed in a book** for most of the journey, but at one point, glanced idly out of the window. To my horror I saw huge, brilliant letters emblazoned across a cloud bank spelling out the message "TYRONE POWER DEAD". it was a terrific shock, I began to doubt my senses when I realised that nobody else on the plane appeared to have seen them, but for a few seconds they were definitely there, like huge teletype, lit up with blinding light from within the clouds. When I landed in New York I was told that Tyrone Power, had died (suddenly) a couple of hours earlier.
**In one account the book is a classic French novel - which might explain something. Also worth noting is that Power was a close friend of Price. The book bears a presentation to the artist Ronald Searle from Noakes. RS contributes a similar piece about being woken up in the South of France by Laura West Perelman the late wife of his friend Sid Perelman (and sister of Nathaniel West) who announces to him 'Sid is Dead' - the next morning he receives a call telling him that Perelman had been found dead in his hotel room in New York during that same night.