Last night I was awoken by a pulsing light coming through the shed windows. There was a light in the clouds above the next island over that was rhythmically rotating from a central point, like a lighthouse light. I put on my boots and coat and went for a midnight walk in the dark to see it from a vantage point without trees in the way. After watching it for quite a while in the still of the night, I concluded it must have somehow been reflecting the lighthouse light at Cattle Point on the southern tip of San Juan island, two islands away. When I returned to my bed, I could still watch it through the windows. Eventually the clouds shifted and it disappeared.
Pacific White Sided Dolphins at Lime Kiln Lighthouse Habitat, another lighthouse on SJI.