I agree with Yellow Flash on this one.
(Yeah, I'm surprised, too.)
Sure, from what we've seen top-ninjas do have a vague sense of, "there's
something behind me".
They do not have a sense of, "there is one kunai and three shuriken aimed at my left leg."
They might be able to feel an opponent's sense of frustration/anger/bloodlust. They cannot feel a single fist shaking in their direction. It's too specific.