UFO Sightings Map:
USA Northwest States
UFO Sightings show in 3 colors here. Those prior to 1960
are in light blue. Violet indicates 1960-1979, and green
is for 1980 to the present.
Note the nearly linear string of 1947-1950s (blue) sightings from the Hanford, Washington nuclear works, extending southeast to southern Idaho.
Another cluster from that era shows along the Washington - Idaho state line.
A more recent string of sightings runs north and south along the Okanagan River in British Columbia, (1980s - present). 1960s - 1970s events (violet) are distributed very differently.
The most recent events (green) seem to congregate near major seaports.