Strange 6th sense, would be nice to know what this is?

I know exactly what you're talking about- I have the same thing, and it's run in my family for years. I've looked into it, and what I've been able to find is that some people are just a little more open and perceptible to things than others, whether it be something supernatural, like sensing ghosts, or earthly, like predicting storms. No need to worry, just accept it- it doesn't sound like you're able to make contact with them so there's really nothing to do with or about your senses