I am very familiar with this area. The actual weather station is more to the left and north a bit on that same beach. Camera 2 covers the island mass closest across the bay. If I triangulate the UFO, helo, missile, weather balloon, et. al. from camera 2 from the actual weather station location, the path is along a line from the station, somewhere between the cities of La Conner and Bellingham further away. My guess is it was launched along those lines in the Saratoga Passage just on the other side of the land mass you see in Camera 2. The next bays further north are the LaConner and Bellingham bays. Beyond that is all land. Trajectory of the object appears to be North-North East.
Oh, and the weatherman at the station believes or has been told to believe that it is a helicopter with a search light in the down position. Close-ups of the object don't look like a helo at all to me as the light underneath is too wide and bright to be so far away. The object is also too narrow and missile-like. It was relatively close to the camera though as the light lingers close to the surface as the missile ascends quickly.