She writes that it describes the changeable weather in Georgia. She made it with paper piecing, which sure makes sense to me. Look at the centers, they are pieced four-patches.
To give you an idea of how small this is, I took a picture with my finger about 2 inches in front of the quilt--NOT TOUCHING THE QUILT SINCE I KNOW BETTER-- and you can see at what scale she was working.That makes those center four-patches about the size of my thumbnail. Remarkable.