> don't remember it happeing this early.
You're right; it is a little early. But, that's not unheard of by any stretch of the imagination.
I am a ham, and watch this stuff pretty closely, as my interests in the hobby are mainly VHF. I didn't see any real appreciable Es above 50 MHz last year until May 11th (save for a little burp on 4/26). Interesting, it was the same date the year before.
This year, there was a very nice opening into Mexico on 4/21, and has been very active otherwise since May 4th. Further, lower-band Es on 28 MHz (the 10m ham band) really hasn't stopped except for very late nights since that time. That's unusual.
Now, is this meaningful for the coming Season? I can't answer that. Last year started late and weak, but, it had some spectacular moments, including a 50 MHz opening from the Midwest into Japan. Yikes. So, who knows?
As I type, there is some Es going on, but it hasn't peaked much above 50 MHz (the band opens from below, and works up). I would imagine something will happen before the day is out, though.
I love Es!
DE