Volcano Information
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Pagan
- Current Update, last updated Feb 10, 2012 10:14 ChST:
Most satellite images of Pagan over the past week were cloudy. One clear satellite image showed a gas and steam plume drifting downwind from the volcano. The USGS received no further reports of unrest or activity at Pagan volcano.
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 has been detected at other volcanoes in Northern Mariana Islands this week. 
Volcanic History Overview: Pagan Island, the largest and one of the most active of the Mariana Islands volcanoes, consists of two stratovolcanoes connected by a narrow isthmus. Both North and South Pagan stratovolcanoes were constructed within calderas, 7 and 4 km in diameter, respectively. The 570-m-high Mount Pagan at the NE end of the island rises above the flat floor of the northern caldera, which probably formed during the early Holocene. South Pagan is a 548-m-high stratovolcano with an elongated summit containing four distinct craters. Almost all of the historical eruptions of Pagan, which date back to the 17th century, have originated from North Pagan volcano. The largest eruption of Pagan during historical time took place in 1981 and prompted the evacuation of the sparsely populated island. From the Smithsonian Global Volcanism Program.
Location: Mariana Islands, Mariana Islands
Latitude: 18.13
Longitude: 145.8
Elevation: 570 m
Recent Eruption: 2006- Hazard Assessments: Sako, M. K.; Trusdell, F. A.; Koyanagi, R. Y.; Kojima, George; Moore, R. B., 1995, Volcanic investigations in the Commonwealth of the Northern Mariana Islands, April to May 1994, USGS Open-File Report 94-705.
- Link to monitoring data: NMI Web Site
Volcanic Alert Level: ADVISORY Aviation Color Code: YELLOW
