Archived Updates

Anatahan Volcano Update for October 6
Submitted Tuesday, October 7 at 10:00 a.m. local Anatahan time  

For the past 24 hours, Anatahan volcanic seismicity has been low, at a level similar to that for the last month of so. There were no apparent eruption signals or precursory events. Tremor and seismic energy release are low.

Anatahan Volcano Update for October 7
Submitted Wednesday, October 8 at 10:00 a.m. local Anatahan time  

For the past 24 hours, Anatahan volcanic seismicity has been low, at a level similar to that for the last month of so. There were no apparent eruption signals or precursory events. Tremor and seismic energy release are low.

During recent overflights observers have seen no ash emissions. The plume continues to emit steam and SO₂. The floor of the crater is in great flux. When it rains, it is covered by sediment-laden water and (or) debris flows. The east crater continues to have an active geothermal system that consists of mud pots, mini-geysers, and steam jets from the crater walls.  In general. emissions continued at a low level. 

Anatahan Volcano Update for October 8
Submitted Thursday, October 9 at 09:50 a.m. local Anatahan time  

For the past 24 hours, Anatahan volcanic seismicity has been low, at a level similar to that for the last month of so. There were no apparent eruption signals or precursory events. Tremor and seismic energy release are low.

Anatahan Volcano Update for October 9
Submitted Friday, October 10 at 09:00 a.m. local Anatahan time  

For the past 24 hours, Anatahan volcanic seismicity has been low, at a level similar to that for the last month of so. There were no apparent eruption signals or precursory events. Tremor and seismic energy release are low.

Anatahan Volcano Update for October 10
Submitted Saturday, October 11 at 09:00 a.m. local Anatahan time  

For the past 24 hours, Anatahan volcanic seismicity has been low, at a level similar to that for the last month of so. There were no apparent eruption signals or precursory events. Tremor and seismic energy release are low.

Anatahan Volcano Update for October 12
Submitted Monday, October 13 at 13:00 a.m. local Anatahan time  

For the past 24 hours, Anatahan volcanic seismicity has been low, at a level similar to that for the last month of so. There were no apparent eruption signals or precursory events. Tremor and seismic energy release are low.

Contact persons:
Juan Takai Camacho, Geophysical Seismic Technician, EMO Saipan; tel: (670) 322-9528, fax: (670) 322-7743, email: juantcamacho@hotmail.com
Ramon Chong, Geophysical Instrument Specialist, EMO Saipan; tel: (670) 322-9528, fax: (670) 322-7743, email: rcchongemo@hotmail.com
Frank Trusdell, Geologist, USGS; tel: (808) 967-8812, fax: (808) 967-8890, email: trusdell@usgs.gov