The sunset light can turn any cloud into a dazzling show of swirls of colour. The northwesterly winds behind the cold front were increasing with height which is characteristic of cold air advection. The cloud curls on the back edge of the cloud were turned upward by the stronger winds aloft which punched into the rear flank of the convective cloud. These curls were aided as well by the friction layer adjacent to the earth. The net effect was to create a cloud curl kind of like a pencil rolling on the surface of a table. The gusty wind had also stirred up waves in the eastern basin of Singleton Lake. The west basin was still thick with ice. There was a subtle bright line on the far shore which I included.
This kind of fluid flow occurs everywhere. This graphic is from a study of blood flow in an artery.
The arrows on the left side of the graphic are close to a blood flow relative representation while the arrows on the right is the blood flow relative to the inertial body.
The sun had already set below the horizon but was still enough to turn the clouds into glowing but dying embers of the day.
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Pixels. Thank you.
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