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Eruption at Cleveland volcano, Alaska 3 October 2009

Posted by admin in activity reports, Alaska, Cleveland, eruptions, United States.
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The Alaska Volcano Observatory increased the alert level at Cleveland volcano to Orange/Watch this morning following an eruption which produced an ash cloud to altitudes of 4.5-6.1 km. The following Volcanic Activity Notice was issued by the AVO at 02:29 AKDT (1029 UTC):

Satellite data indicate that Cleveland volcano erupted briefly this morning at ~0730 UTC (2330 AKDT) 02 October 2009, producing an ash cloud to maximum altitudes of 15,000′ to 20,000′ (4.5 – 6.1 km). Thus, the aviation color code is being increased to Orange, and the volcano alert level is being increased to Watch. Further eruptive activity is possible.

There is no real-time seismic network at Cleveland, which forms part of Chuginadak Island in the middle of the Aleutian chain, so earthquake activity cannot be tracked and eruptions can occur without warning. Cleveland is a very active volcano, with recent eruptions in 2001, 2005, 2006 and 2007, and more minor eruptive activity in 2008 and 2009.

News
Cleveland volcano on Aleutians spews ash plume – KTUU.com, 3 October 2009

Information
Global Volcanism Program: Cleveland – summary information for Cleveland (1101-24-)
AVO Cleveland Eruption Page – information on current activity at Cleveland
Alaska Volcano Observatory – main page for the AVO

The Volcanism Blog