Map showing seismicity around Mount St. Helens on Jan 3, 2018.
Detailed Description
Map showing seismicity around Mount St. Helens on January 3, 2018. Circles represent earthquakes of relative size, blue occurred within the past two days, yellow within the past week. The Magnitude 3.9 earthquake and aftershocks are the cluster of blue circles to the east of Spirit Lake.
Sources/Usage
Public Domain.