Station Id: GUA
Location: Dededo, Guam
Latitude: 13.5895°N
Longitude: 144.8694°E
Geomagnetic Latitude: 5.76°N*
Geomagnetic Longitude: 216.50°E*
Elevation: 140 meters
Orientation: HDZF

* IGRF values as of 2015.

Sign outside Guam Observatory


The Guam observatory was established in 1957. The observatory is situated on property owned by the U.S. Air Force according to terms of an agreement with the USGS and the Geomagnetism Program.


Guam magnetic observatory.
Guam magnetic observatory.
Variations building at Guam.
Variations building at Guam.
* Pictures courtesy of Jeff Fox