One of those days
This is what the morning sky looked like. Note the moon.
A few words of advice on shooting clouds: a digital camera will usually overexpose the sky. The sky is lighter than the ground (the Sun is the big shiny think up top), and often a correct exposure of what’s at eye level means the sky’s highlights get blown out of proportion – hence you get green skies and homogeneously white clouds. In order to shoot these and get the clouds right, I corrected the exposure to -2/3*. The clouds look correct, the ground underexposed. This is the reason why we use ND Grad Filters.
*Except the first one.