United States of America

Annex 2 State*Yes
Signature Date24-SEP-1996
Ratification Date

Monitoring Facilities

LocationTypeTreaty CodeStatus
Guam, Marianas IslandsAuxiliary Seismic StationAS105Certified
Palmer Station, AntarcticaAuxiliary Seismic StationAS106Certified
Tuckaleechee CavernsAuxiliary Seismic StationAS107Certified
Piñon Flat, CAAuxiliary Seismic StationAS108Certified
Yreka, CAAuxiliary Seismic StationAS109Certified
Kodiak Island, AKAuxiliary Seismic StationAS110Certified
Albuquerque, NMAuxiliary Seismic StationAS111Certified
Attu Island, AKAuxiliary Seismic StationAS112Certified
Elko, NVAuxiliary Seismic StationAS113Certified
South Pole, AntarcticaAuxiliary Seismic StationAS114Certified
Newport, WAAuxiliary Seismic StationAS115Certified
San Juan, PRAuxiliary Seismic StationAS116Certified
Wake IslandHydroacoustic StationHA11Certified
Fairbanks, AKInfrasound StationIS53Certified
Palmer Station, AntarcticaInfrasound StationIS54Planned
Windless Bight, AnarcticaInfrasound StationIS55Certified
Newport, WAInfrasound StationIS56Certified
Piñon Flat, CAInfrasound StationIS57Certified
Midway IslandsInfrasound StationIS58Certified
Hawaii, HIInfrasound StationIS59Certified
Wake IslandInfrasound StationIS60Installed
Lajitas, TXPrimary Seismic StationPS46Certified
Mina, NVPrimary Seismic StationPS47Certified
Pinedale, WYPrimary Seismic StationPS48Certified
Eielson, AKPrimary Seismic StationPS49Certified
Vanda, AntarcticaPrimary Seismic StationPS50Certified
Pacific Northwest National LaboratoryRadionuclide LaboratoryRL16Certified
Sacramento, CARadionuclide StationRN70Certified
Sand Point, AkRadionuclide StationRN71Certified
Melbourne, FLRadionuclide StationRN72Certified
Palmer StationRadionuclide StationRN73Certified
AshlandRadionuclide StationRN74Certified
AshlandNoble Gas SystemCertified
Charlottesville, VARadionuclide StationRN75Certified
Charlottesville, VANoble Gas SystemCertified
Salchaket, AKRadionuclide StationRN76Certified
Wake IslandRadionuclide StationRN77Certified
Wake IslandNoble Gas SystemCertified
Midway IslandsRadionuclide StationRN78Certified
Oahu, HIRadionuclide StationRN79Certified
Oahu, HINoble Gas SystemCertified
Upi, GuamRadionuclide StationRN80Certified

Additional Information

Facility Agreement: Yet to be concluded

Workshops and seminars hosted (small selection):
Technical Training Programme for Radionuclide Station Operators, 17 to 21 October 2011 in Fairfax
Technical Training Programme for Radionuclide Station Operators, 10 to 14 October 2011 in Oak Ridge
Operation and Maintenance Workshop for Station Operators, 9 to 13 May 2011 in San Diego
Technical Training Programme for Radionuclide Station Operators, 22 to 24 March 2010 in Oak Ridge
Technical Training Programme for Radionuclide Station Operators, 19 to 23 April 2010 in Fairfax

In-kind voluntary contribution in August 2011 valued at $ 8.9 million for projects implemented by U.S. agencies in coordination with the CTBTO in support of the further development of CTBTO verification and monitoring activities and financial contribution of $25.5 million in September 2011 to reconstruct hydroacoustic station HA04 in the French Southern Territories.

United States national Frances Boyle is Director of the CTBTO’s Division of Administration since June 2011.

Featured stations:


"One of our highest priorities is the ratification and entry into force of the Comprehensive Nuclear Test-Ban Treaty. The Treaty is an essential step toward the peace and security of a world without nuclear weapons, the vision President Obama articulated in Prague in April 2009."
Under Secretary for Arms Control and International Security Ellen Tauscher at the 2011 Article XIV Conference in New York – full statement (PDF)

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