Twice it’s happened to me when relatives have died. Once was a strange light at the moment an aunt died in hospital that I saw at home when I was about 11. We didn’t know she was going to die but 5 minutes of thereabout after I saw the light; the hospital rang to say she died. Some might say coincidence and hallucination but I don’t think so personally.
The second time was a year ago or thereabouts, when my cousin died of a heart attack. The day he died I had the very strong feeling that someone was going to die of a heart attack that was close to me. My brain reasoned that if it was a true feeling then it would be my dad because I could not think who else it could be, as my dad is in his mid-70s but my cousin was only 53. The same day, unbeknown to me at the time, my aunt who helped raise my cousin was thinking about this cousin all day, and like me she should could not figure out why such thoughts, and in my case a feelings, would not go away.
It was the next day we found out that he had died, and then the pieces started to fit together. I’m not prone to worry over normally fleeting feelings or worries about relatives dying like that, but this one would not be banished in the normal way.
I know friends as well where other stuff, along these lines, has happened to them. I don’t expect anyone to believe me but there it is.