Confirmation bias
Sodium vapour streetlights often fail in such a way that they come on very slowly, warming up, and then go off again very suddenly. They do this a lot.

You don't notice the times you walk under the lamp when it's coming on, because it doesn't do anything very visible quickly enough for you to notice. But you do notice when it's going off.

Et voila! A paranormal legend is born.

No idea about the radars though. Have you got any fillings?
( Amish Information Systems hates misplaced, commas, Fri 4 Jul 2008, 15:55, Reply)