1. Mount St. Helens 8:32 Sunday Morning, May 18, 1980 Occurred at Mount St Helens in the state of Washington

2. Before After

11. http://www.fs.usda.gov/detail/mountsthelens/home/?cid=stelprdb5199437 http://pubs.usgs.gov/gip/msh/impact.html http://geology.com/articles/volcanic-ash.shtml http://www.appstate.edu/~abbottrn/vlcns/sthlns.html http://www.geofhagopian.net/earth/ESS/U3/ESSU3-01.html http://volcanology.geol.ucsb.edu/volcano.htm http://loki.stockton.edu/~hozikm/geol/Courses/The%20Earth/Content%20Web%20Pages/Alber/mount_rainer.htm http://www.telegraph.co.uk/news/worldnews/asia/japan/10029963/Mount-Fuji-to-get-World-Heritage-status.html https://500px.com/photo/10418527/mayon-volcano-by-darius-ypanto http://homepages.uc.edu/~maynarjb/MtStHelens/Johnston_ridge_fig1_600.html http://www.csmonitor.com/Environment/Latest-News-Wires/2014/0929/Mt.-St-Helens-Is-it-ready-to-erupt-again http://gonw.about.com/od/parkswa/a/mshaffects_2.htm http://volcanoes.usgs.gov/volcanoes/st_helens/st_helens_geo_hist_99.html http://www.usatoday.com/story/news/nation-now/2015/05/17/mount-st-helens-people-stayed/27311467/ http://volcano.oregonstate.edu/what-were-effects-people-when-mt-st-helens-erupted https://www.ngdc.noaa.gov/hazard/stratoguide/helenfeat.html