> The air was rather dry today, so that could've played a hand in these signalsNope. It's Summertime.In the Summer, the E-layer of the ionosphere can become heavily charged. When that happens, increasingly-higher frequencies can refract off this layer as the layer becomes more charged. One may notice the CB band "skipping," then ham frequencies around 50 MHz, then low-band TV (channels 2-6), and finally, if the charge is intense enough, FM will refract.Paths on E-layer refraction (called "sporadic-E" by radio geeks) tend to run from about 600 to 1300 miles, with 1000 miles being a very typical distance. And, it seems, southern paths are the most common. That means Mexico can be expected fairly often in Summer. You'll probably notice that stations are heard more often at the bottom of the band than the top.Friday and Saturday were pretty strong sporadic-E days across the country. More than just Mexico should have been audible. Guys in the Northeast were hearing the South and Midwest, as well. I saw some loggings listed showing, for instance, New Orleans and the Gulf Coast being heard in NY. Sunday and Monday have been pretty quiet.There are other path modes than can affect FM, especially along the Gulf Coast. But, I'll leave that for another day. But, if one finds this interesting, keep an ear out over the next few weeks. More will pop up.DE