Volcano Update from Archive

Friday, December 7, 2012 9:26 AM ChST (Thursday, December 6, 2012 23:26 UTC)

Report prepared by the U.S. Geological Survey.

18°7'48" N 145°48' E, Summit Elevation 1870 ft (570 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW

A robust volcanic plume continues to issue from Pagan Volcano as seen in satellite imagery this past week. Last Thursday, observers on Saipan reported hazy sky conditions associated with northerly winds that pushed the gas and vapor plume from Pagan southward. Since then, USGS has received no additional reports of haze or vog associated with the Pagan plume. There have been no reports of ash emission at Pagan Volcano.

It remains possible that residents of the CNMI may notice sulfurous odors under certain wind conditions. Additional information about volcanic gas and vog can be found at: http://hvo.wr.usgs.gov/hazards/FAQ_SO2-Vog-Ash/main.html

Pagan Volcano is not monitored with ground-based geophysical instrumentation and the only sources of information are satellite observations and occasional reports from observers who pass by or visit the island. We will continue to evaluate satellite imagery, on-island, and mariner reports when they become available, but because the volcano is not monitored with ground-based instruments, we cannot provide advanced warning of activity.

Access to the island may be restricted by the CNMI government. Contact the EMO for the latest information.

No eruptive activity or significant unrest was detected at other volcanoes in Northern Mariana Islands this week.

USGS Northern Marianas Duty Scientist (808) 967-8815

CNMI Emergency Management Office (670) 322-8001