Volcano Update from Archive

Friday, November 30, 2012 11:25 AM ChST (Friday, November 30, 2012 01:25 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

On Thursday, observers on Saipan reported hazy sky conditions associated with northerly winds that pushed the gas and vapor plume from Pagan Volcano southward. Since then USGS has received no additional reports of haze or vog associated with the Pagan plume. Mostly clear satellite images throughout the past week showed nothing unusual and there have been no reports of ash emission at Pagan Volcano.

It is possible, but not certain that residents of the CNMI may notice sulfurous odors while northerly lower-level winds prevail. Additional information about 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