This happened to my mother a few years ago:

I come from a very close knit family. There's my mom, dad, three brothers, and myself. I am the second eldest, and at the time I was 21 with my brothers being 23, 20, and 20 respectively (adopted, not a twin). All four of us were attending college at the time, and my father who travels a ton for work was out of town, so we were all spread out across the continental U.S. As my mother tells the story, on this particular night (around 1am by my estimate) she was having a terrible and vividly realistic nightmare that one of her sons was lying in the street begging for her help while dying (I only mention the begging part because it's the part of the nightmare she remembers the most, one of us pleading with her for help). At this point she wakes up and attempts to get in touch with all of us. I work at bar, so I'm up and working to answer her call. I try to calm her down, but honestly she's so convinced something is wrong that I too try and call my brothers. To this day I can still remember how shaken and certain she was that one of us was hurt and helpless, and unfortunately she was right. No idea how she knew, but not long prior to that phone call, one of my younger brothers was the passenger in a vehicle that got in an accident, and he wasn't wearing his fucking seat belt. He was ejected from the vehicle, and from my understanding, was pretty much DOA. No idea how my mother knew what she knew, but I do know one thing for certain: My brothers are my best friends, I miss the shit out of West every day, and I'd still be able to hug his dumbass today if he'd had just taken two seconds to put on his fucking seat belt. To this day, any car I'm in won't budge until every person in it has their's on, I suggest ya'll do the same.

P.S. sorry if you guys have questions or if there are some typos in my story that go unaddressed. I don't get on reddit often, and literally made an account to share this because the topic resonated with me so heavily.