During my most recent trip home at the end of last month I realized something. For years I've declared that there's not as big and blue as a Texas sky. And while the San Francisco occasionally has a beautiful azure quality to it (today's a fine example), it doesn't have the big, deep, vast quality I see in Texas.
This is possibly because I drive more in Texas and see the sky as I'm cresting over hills. But I think it's something else.
I think it's the clouds.
While driving when I was home last month I crested a familiar hill and was greeted with the expansive sky filled with cumulonimbus clouds. Scores of them. Some up close, some fading into the distant horizon. And I realized. Cumulonimbus clouds are particularly three dimensional and it's this quality that provides the sky a sense of depth and dimension.
I think it's the clouds that make the Texas sky feel deep and big.