That use to happen to me when I was deeply attached to technology. I could just sense when my phone went off or if someone posted something on my wall or on some social site. I could time it perfectly to check and I knew what would attract people. I knew their patterns and how it all worked. My range is what I'm focused on.
I don't know how to answer this because everything is always changing as I become more in tune or I guess really more accepting. I've been an empath my whole life but only learned it was different and what it was called a year ago. Since then I have opened my mind and heart I more possibilities and have changed how I view people and the world. Once I understood everything was connected and felt the connection enough to understand what it was, everything opened up.