The ISIS station in Seattle is located on a rooftop at NOAA's campus on the shore of Lake Washington.

Seattle, Washington
Latitude: 47.68 degrees North
Longitude: 122.25 degrees West
Elevation: 20 meters
ISIS data from the Seattle site.
Location of ISIS site at Seattle, WA
Seattle ISIS station
The ISIS station in Seattle, Washington, located near the shore of Lake Washington.
Seattle ISIS station solar tracker
Instruments mounted on the Seattle solar tracker include, from left to right, a total solar pyranometer, a diffuse pyranometer, and a UV-B Biometer.
Seattle ISIS station
Another view of the ISIS tracker, looking inland.