Indeed, FM skip is (or was) pretty strong depending on atmospheric conditions. In the early 70's, after a cold front moved thru Rochester it wasn't out of the question to pick up stations from Texas, Mississippi or other Southern stations. They would come in strong, then fade before coming back strong, and fading again. TV skip isn't out of the ordinary either. My in-laws lived in Owego, NY (outside of Binghamton) and before the advent of cable in the rural areas they had the ol' rooftop antenna. During Summer storms, WSYR-TV was frequently overridden by WEDU out of Tampa.
One Summer I was in Aurora, Ohio (before Sea World existed) and we had a tornado roll through the area. After that storm, we were getting Detroit TV stations like locals with set-top rabbit ears. The cool thing was the shows showing an hour earlier. This was 1960, you know.