Ever see bright lights "following" the sun? They could be "sun dogs."
A sun dog occurs when a bright spot appears to the left or right of the sun. They often occur in pairs, with one on each side of the sun, and is sometimes accompanied with a halo around the sun. It is caused by sunlight refracting and bending as it passes through cirrus, or ice crystal clouds. It acts like a prism to create the halo effect.
Sun dogs appear when the sun is low on the horizon, and it was seen all over Western Washington from Anderson Island to Seattle.