(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)
(2) Issued:(20100609/2126Z)
(3) Volcano:Sarigan (CAVW# 0804-192)
(4) Current Color Code:UNASSIGNED
(5) Previous Color Code:unassigned
(6) Source:Northern Mariana Islands
(7) Notice Number:2010/N2
(8) Volcano Location:N 16 deg 42 min E 145 deg 46 min
(9) Area:Mariana Islands
(10) Summit Elevation:1765 ft (538 m)
(11) Volcanic Activity Summary:Report prepared by the U.S. Geological Survey. All times UTC.

No further volcanic activity has been observed since the explosive eruption from a submarine vent south of Sarigan Island on May 29. Seismicity recorded on the nearest seismometer, located on Sarigan Island, has returned to background levels. Nothing unusual has been observed in satellite data. Therefore we are lowered the aviation color code/volcano alert level from YELLOW/WARNING to Unassigned.

Should submarine volcanic activity in this area resume, it is possible that another eruption will occur and it likely will be similar to the previous event. Given the violent nature of the eruption last week, we would advise mariners to avoid the immediate area around the vent.

The USGS continues to monitor the activity with seismic data from stations located on Sarigan and Anatahan islands, as well as by analysis of satellite images.

Access to the area may be restricted by the CNMI government. Contact the EMO for the latest information regarding access restrictions to Sarigan and Pagan Islands.
(12) Volcanic cloud height:Unknown
(13) Other volcanic cloud information:Unknown
(14) Contacts:USGS Northern Marianas Duty Scientist (808) 967-8815
http://volcano.wr.usgs.gov/cnmistatus.php

CNMI Emergency Management Office (670) 322-8001
http://www.cnmiemo.gov.mp/