|Location:||NASA Stennis Space Center, MS|
* IGRF values as of 2015.
The Geomagnetism Program established an observatory on the Stennis Space Center in 1986. The site of the space center is large, including some forest land, which helps insulate the observatory from outside interference. The Stennis observatory, formerly known as the Bay St. Louis observatory, is operated as partnership between the USGS and the Stennis Space Center, under terms of a memorandum of agreement established in 2002. A new observatory building was constructed in 2006 after the previous buildings were destroyed by Hurricane Katrina. The observatory came back into operations in January 2007.