Northern Mariana Islands Recent Status Report, Updates, and Information Releases
NORTHERN MARIANA ISLANDS WEEKLY UPDATE
U.S. Geological Survey
Friday, August 19, 2016, 8:20 AM ChST (Thursday, August 18, 2016, 22:20 UTC)
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.
Monitoring of Northern Mariana Islands Volcanoes
Seismic activity for Anatahan Volcano is monitored in real time. In addition, an infrasound array on Sarigan Island provides pressure sensor data that can be used to detect explosive activity at Anatahan and Sarigan volcanoes. These data have experienced an interruption in the past week. Anatahan Volcano is currently at Aviation Color Code GREEN and Alert Level Normal. Due to the lack of seismic stations on island, Sarigan Volcano is designated as UNASSIGNED. All other volcanoes in the CNMI including Farallon de Pajaros, Supply Reef, Maug, Asuncion, Agrigan, Pagan, Almagan and Guguan are unmonitored seismically and are designated UNASSIGNED.
Satellite images of CNMI volcanoes are analyzed for evidence of volcanic activity, including ash and gas plumes.
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/
CNMI Homeland Security and Emergency Management
USGS Northern Mariana Duty Scientist (808) 967-8815
Satellite information, Washington VAAC