Astronomer, author, skeptic, father, punster.
Yeah, welcome to Boulder!
Mammatus clouds mark the tail end of the storm. These are awesome, and they're directly overhead.
A little weather over the Boulder Flatirons. Yikes.
Red on red. @mariancall at Garden of the Gods.
.@mariancall and a piece of me.
This is what happens when you let H. R. Giger do the clouds.
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