Redoubt eruption update 23 March 2009Posted by admin in activity reports, Alaska, eruptions, Redoubt, United States.
Tags: Alaska, Redoubt, United States, volcanic activity reports, volcanic eruptions
Mount Redoubt in Alaska erupted at approximately 22:38 local time, 22 March 2009 (06:38 GMT 23 March 2009).
The Alaska Volcano Observatory reported that, as of 02:00 local time, four large explosions had taken place:
- 22 March 2009 at 22:38
- 22 March 2009 at 23:02
- 23 March 2009 at 00:14
- 23 March 2009 at 01:39
The AVO reported at 23:20 that the eruption cloud had reached 50000 feet above sea level (15200 metres). Radar views currently show a plume approximately 80 kilometres in length trending to the NNE. The National Weather Service has issued an ashfall advisory for the Susitna Valley, including Talkeetna, Willow and Cantwell: ‘light ashfall has already been reported at Skwentna. Light ashfall is possible throughout the Susitna Valley this morning’.
Anchorage VAAC issued an ash advisory at 08:20 GMT (00:20 local time), reporting ash to FL500 (i.e. 50000 feet). The next scheduled advisory is at 14:15 GMT (06:20 local time).
At the time of posting (02:41 local time, 10:41 GMT) all four of the seismic traces available on the AVO website have been showing continuous intense tremor since 01:39. The eruption is very much ongoing.
Volcanic Alert Level at Redoubt is WARNING, Aviation Colour Code is RED.
For all our Redoubt coverage: Redoubt « The Volcanism Blog.
Global Volcanism Program: Redoubt – summary information for Redoubt (1103-03-)
Alaska Volcano Observatory – Redoubt – AVO information and updates for Redoubt
Alaska Volcano Observatory – main page for the AVO
Anchorage VAAC advisories – volcanic ash advisories issued by Anchorage VAAC are archived here