If you go to the skunk bay weather website, and look at the camera shots, it appears the missle was fired in the camera 2 field of view.
(look at where the sunset is on Camera one)
The picture is a panoramic picture with all 3 cameras.
the location is just off of Oak harbor, next to where the air base is.
The water is frequently trafficked by subs from Bangor.
Look at the sunset (West)