WIRED ScienceA Swarm of Earthquakes Shakes Mount St. Helens
Let's look at some volcanic rumblings and eruptions from the last week: Washington Mount St. Helens is keeping up its unsettled 2016, this time with another small earthquake swarm. The USGS detected over 120 earthquakes over the last few days, all occurring 2-4 kilometers (1-2 miles) beneath the volcano and all very small (less than M1).
