Humidity was fairly high today (now yesterday). I brought a sweater, but the library complex was strangely warmer. It felt like the first really humid, warm day of the year (though I’m sure there have to have been a couple of others). A couple of middle-school girls spent the whole time on the bus home singing some tunes deliberately off-key, setting everyone’s teeth on edge. I went outside around 11.00 and the air was spookily still, then five minutes later, lightning flashed, a warm breeze picked up, and a thunderstorm raced swiftly through the county north and east of Ann Arbor, causing a little rumbling and noise and a strange tension in the air.