America’s Volcanoes

Current Anatahan status from HVO-CNMI:

Anatahan Daily Update issued Feb 27, 2008 10:56 MPT Volcano Alert Level WATCH - Aviation Color Code ORANGE
Report prepared by the U.S. Geological Survey.

Levels of seismicity at Anatahan remain elevated. Mostly clear satellite views did not show an ash plume today.

OMI satellite data show that the volcano continues to produce [...]

Current Anathan status from HVO-CNMI:

Anatahan Daily Update issued Feb 23, 2008 11:38 MPT Volcanic-Alert Level WATCH - Aviation Color Code ORANGE
Report prepared by the U.S. Geological Survey. Seismicity at Anatahan has varied throughout the day with a steep drop in the continuous tremor starting at 1545 UTC followed by a slow buildup over the [...]

Current Anatahan status from HVO-CNMI:

Anatahan Daily Update issued Feb 21, 2008 11:07 MPT Volcanic-Alert Level WATCH - Aviation Color Code ORANGE
Report prepared by the U.S. Geological Survey. Seismicity at Anatahan remains elevated. Satellite data show continued production of sulfur dioxide by the volcano. During times of northerly winds, a plume from Anatahan would extend [...]

A small eruption of Anatahan has occured in Northern Mariana Islands:

Anatahan Information Release issued Feb 5, 2008 09:19 MPT Volcanic-Alert Level WATCH - Aviation Color Code ORANGE
Report prepared by the U.S. Geological Survey. Satellite images from February 3, 2008 show a diffuse ash plume extending west from the volcano for approximately 60 miles (100 [...]

Current Anatahan status from HVO-CNMI:

Anatahan Weekly Update issued Dec 14, 2007 23:04 MPT Volcanic-Alert Level ADVISORY - Aviation Color Code YELLOW
Report prepared by the U.S. Geological Survey. Low-level tremor continues at Anatahan. Amplitude levels decreased slightly on December 12 and continue at the lower level. On December 10 a plume was visible in MODIS [...]

Current Anatahan status from HVO-CNMI:

Anatahan Weekly Update issued Nov 30, 2007 08:38 MPT Volcanic-Alert Level ADVISORY - Aviation Color Code YELLOW
Report prepared by the U.S. Geological Survey. Continuous volcanic tremor at Anatahan continues at relatively low levels. Distinct increases in amplitude of tremor occurred on November 26 and November 28. Explosions were also observed [...]

Current Anatahan status from HVO-CNMI:

Anatahan Weekly Update issued Oct 26, 2007 08:22 MPT Volcanic-Alert Level NORMAL - Aviation Color Code GREEN
Report prepared by the U.S. Geological Survey. The aviation color code and alert level for Anatahan remain at GREEN and NORMAL. No unusual seismic activity was noted this week. No volcanic haze and sulfur advisories [...]

Current Anatahan status from HVO-CNMI:

Anatahan Weekly Update issued Oct 19, 2007 04:57 MPT Volcanic-Alert Level NORMAL - Aviation Color Code GREEN
Report prepared by the U.S. Geological Survey. The aviation color code and alert level for Anatahan remain at GREEN and NORMAL. No unusual seismic activity was noted this week. No volcanic haze and sulfur advisories [...]

Current Anatahan status from HVO-CNMI:

Anatahan Weekly Update issued Oct 12, 2007 11:18 MPT Volcanic-Alert Level NORMAL - Aviation Color Code GREEN
Report prepared by the U.S. Geological Survey. With this report, we move from bi-weekly updates to weekly updates coming out each Friday. The aviation color code for Anatahan was lowered from Yellow to GREEN today [...]

HVO-CNMI has lowered the status of Anatahan to Green/Normal:

Anatahan Information Release issued Oct 12, 2007 09:22 MPT Volcanic-Alert Level NORMAL - Aviation Color Code GREEN
Report Prepared by the U.S. Geological Survey. Seismic activity at Anatahan has been at or near background since October 1 and USGS is lowering the aviation color code to GREEN and [...]