I had an acquaintance who was moving to Colorado to work on his PhD. On his way he stopped at a trailhead and he and his dog went for a hike just as snow was starting.
They found him in the spring.
His dog made it out OK though.
40 years ago I used to go camping (summer and winter) alone in Colorado. One nearby place that I went often was Rainbow Lakes, just west of Boulder.
I recently heard a youtuber “Mr. Ballen” that tells various types of stories. Spooky, murders, etc. He has told some of the stories from the “Missing 411” book about lost people in the wilderness that have odd twists.
One was about a guy that went hiking in the Rainbow Lakes area with his dog, the snow started to fall, the dog made it out but the guy didn’t. Sad. Happens far too often, even if one is prepared. Looking back I was foolish I suppose, but lucky. All it would have taken on a lot of trips is a sprained or broken ankle.