Northern Mariana Islands Recent Status Report, Updates, and Information Releases
Report prepared by the U.S. Geological Survey.
No eruptive activity or significant unrest has been detected at volcanoes in Northern Mariana Islands this week.
MONITORED NORTHERN MARIANA ISLAND VOLCANOES
Seismic activity is monitored in real time at 2 volcanoes in the Commonwealth of the Northern Mariana Islands. Satellite images of CNMI volcanoes are analyzed for evidence of volcanic ash and gas plumes. Some volcanoes may currently display anomalous behavior but are not considered to be at a dangerous level of unrest. Anatahan volcano is in color code GREEN and volcano alert level Normal and is at or near normal levels of background seismicity. Sarigan Volcano has one seismic station and is designated as UNASSIGNED. All other volcanoes in the CNMI including Farallon de Pajaros, Supply Reef, Maug, Asuncion, Agrigan, Pagan, Alamagan, and Guguan are unmonitored seismically and are designated UNASSIGNED. USGS did not detect volcanic ash or gas plumes in the vicinity of any of these volcanoes.
The USGS conducts daily seismic checks on data from four seismic stations on Anatahan and one seismic station on Sarigan as well as an infrasound array on Sarigan when data streams are available. Seismic data from three seismic stations on Anatahan were restored on December 8, 2015. The seismic station on Sarigan is currently not functioning and data are unavailable.
Access to volcanic islands may be restricted by the CNMI government. Contact the EMO for the latest information.
For definitions of Aviation Color Codes and Volcano Alert Levels, see: http://volcanoes.usgs.gov/activity/alertsystem/index.php
SUBSCRIBE TO VOLCANO ALERT MESSAGES by email: http://volcanoes.usgs.gov/vns/
USGS Northern Mariana Duty Scientist (808) 967-8815
CNMI Homeland Security and Emergency Management Office (670) 664-2216