SkyWatch Friday: anti-crepuscular rays, storm clouds, rainbows

Here in the clear mountain air of southwest Montana, crepuscular rays are fairly common--good old sun rays like those common most everywhere:

But we also see anticrepuscular rays fairly often (usually at sunset), rays that stream away from the sun and seem to converge on an infinitely distant horizon point:

The past week has also brought incredible sunsets (maybe there are forest fires west of us?):

Even looking east is colorful most nights:

And there are lots of great clouds beginning with the cumulus that puff up in mid- to late-afternoon:

Leading to evening thunderstorms:

And of course to rainbows (this is a double arc, albeit the higher one if faint):

August in Butte Montana: it's not heaven, but you can see it from here.