In the last 15 minutes, I've heard KWKM-FM in St. Johns, Arizona, on 95.7 MHz from here in Edmonton, at times with a city grade stereo signal. Power 95.7 with ads for Show Low and Springerville.
That gave way to "95.7 The Fox", which might be Fresno, but they are only 17.5KW.
I've never looked that much, but I've never before heard off air cross-border FM from here.
That was in the car, and I was getting nothing in the house because of my lousy antenna. But suddenly, as I write this, I'm getting a rap station.