Recent Earthquakes
Recent natural and manmade seismic activity. Click figure for details.
Quakes Near Volcanoes
| Volcano | Last Week | Last Month | Average Month |
|---|---|---|---|
| Mount Baker | 0 | 0 | 0 |
| Glacier Peak | 0 | 0 | 0 |
| Mount Rainier | 1 | 11 | 3 |
| Mount Adams | 0 | 0 | 0 |
| Mount St. Helens | 5 | 11 | 22 |
| Mount Hood | 7 | 45 | 0 |
| Mount Jefferson | 0 | 0 | 0 |
| Three Sisters | 1 | 1 | 0 |
| Newberry | 0 | 0 | 0 |
| Crater Lake | 0 | 0 | 0 |
The number of earthquakes located at each major Cascade volcano. The average shown is the median number at each volcano for the past 4 decades. Bold letters indicate more-than-average seismicity in the past month.
Earthquakes in the News
Watching for tsunamis from shore
Posted by J. Vidale, 03/15/2012
Bellingham Herald New technology can watch tsunami waves develop with radar from the shore.
Films about the Japanese earthquakes
Posted by J. Vidale, 03/15/2012
New York Times A roster of films, and the ethical issues in their creation.
PNSN struck dead for three hours by power outage
Posted by J. Vidale, 03/14/2012
If you noticed that we seemed asleep from 3pm until 6pm yesterday afternoon, it is because of the massive UW power outage and the fact that someone stole a critical fuse from our back-up generator. We had back-up from the NEIC in Colorado, as usual.
Are hazard maps junk?
Posted by J. Vidale, 03/12/2012
Saturday - Washington Post today's post A pair of discussions (and many comments) that kick around several serious issues, pulling no punches.
Latest Seismo Blog Posts
New Sodo Seattle Liquefaction Array Installed
March 16, 2012
by Paul Bodin
Why we should constantly watch the deformation of the seafloor
March 11, 2012
by John Vidale
The PNSN reduces risk within the states of Washington and Oregon by
- monitoring ground motions within the region in order to better understand earthquake and volcano hazards and their impacts on the physical, economic, political, and social environment,
- providing the most accurate information about earthquakes and volcanoes as rapidly as possible to public officials, the public, and for education, and
- advocating comprehensive and cost-effective measures for reducing the harmful effects of earthquakes and volcanoes.