Mount St. Helens Is Recharging Its Magma Stores, Setting Off Earthquake Swarms

Sources:
http://www.wired.com/2016/05/mount-st-helens-recharging-magma-stores-setting-off-earthquake-swarms/

http://www.dailymail.co.uk/sciencetech/article-3577368/Mount-St-Helens-recharging-36-years-deadliest-blast-history-Volcano-s-restored-magma-stores-setting-series-earthquakes-warns-scientists.html