Cascade Range Current Update

Volcanoes in the Cascade Range are all at normal levels of background seismicity, but Mount St. Helens is experiencing an increased number of earthquakes.

Seismicity at Mount St. Helens has declined significantly since yesterday. However, small, shallow earthquakes are still occurring at above typical background rates. We will continue to monitor the situation through the weekend. This message supersedes the Information Statement of September 24, 2004.

We continue to monitor the situation closely and will issue additional Updates as warranted.

Daily updates of earthquake data and other information can be found on the WORLD WIDE WEB at URL:

http://vulcan.wr.usgs.gov/Volcanoes/MSH/CurrentActivity

(CVO Menu - Monthly Summaries)

and

http://www.pnsn.org/HELENS/welcome.html

(University of Washington - Seismic Update)



Past Updates