Later: I ended up staying up far later than I planned reading Judith Tarr's retrospective reviews of Andre Norton's books on the Tor blog. Also, Ms. Tarr has some really good articles about horses.
I woke at 7:30 a.m. instead of 4:30 a.m., went back to bed pretty quickly, and then read flower catalogs for a while. I dozed off again and got up around 11:00 a.m.
There were nasty thunderstorms earlier in the day, but as of 3:00 p.m. it's clearing up some.