- Current Update, last updated Apr 1, 2011 09:50 ChST:
Seismic activity remains low. Several small volcano tectonic earthquakes that locate in the approximate locations of last May's submarine eruption were noted. Nothing unusual was observed in satellite images. We have received no reports of activity at Sarigan during the past week.
Access to the island may be restricted by the CNMI government. Contact the EMO for the latest information.
- Volcanic History Overview: Sarigan volcano forms a 3-km-long, roughly triangular island. A low truncated cone with a 750-m-wide summit crater contains a small ash cone. The youngest eruptions produced two lava domes from vents above and near the south crater rim. Lava flows from each dome reached the coast and extended out to sea, forming irregular shorelines. The northern flow overtopped the crater rim on the north and NW sides. The sparse vegetation on the flows indicates they are of Holocene age (Meijer and Reagan, 1981). From the Smithsonian Global Volcanism Program.
- Location: Mariana Islands, Mariana Islands
Elevation: 538 m
Recent Eruption: Unknown - Holocene
- 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: UNASSIGNED Aviation Color Code: UNASSIGNED