This kind of skip affects the vhf band frequencies most, not as often on AM. I have noticed the most common skip tunnels here are westerly from Toledo and Detroit and oddly enough, out of southern Florida, Miami, on FM and pre digital VHF TV, although anything is possible.
One Sunday it was like living in Miami, every preset was a Miami station, Y100 on 100.7 etc. Lasted for several hours then turned off like a light. Could also see Miami channels 2, 6 and 10 on TV.