This is where Mt St Helen's
The Elevation is 8,366 after it blew
Portland, Salem, Olympia, Seattle, Medford, Kennewick
It is a Cinder Cone Volcano.
Cinder Cone volcanoes make very very bad eruptions. Mt St Helen's is between the North American and the Pacific Plate. its on a convergent boundary. A convergent Boundary is when two plates move apart and it has shear forces.
Some major eruptions that happened were May 18 1980, March 16 1980 and March 20 1980. The volcano erupted in 1980 with 57 people died and 7,000 animals died. the cause to all the people dead were inhaling hot ash. May 18 1980, It was the most destructive volcano. There was damage to towns and cities. There was $969.80 worth of damage.
Hazards and Safety -> What are the hazards of Volcanoes? Lava overflows, Rock fall, Thick Tephra. How can people around a Volcano Prepare for an Eruption? Build a emergency supply kit and make a family plan. How can people around a Volcano Prepare for an Eruption? Build a emergency supply kit and make a family plan. Are there Early Warning Signs? Yes. there is a 2 month warning signs. How are Volcanic Eruptions Measured? They use seismometers to detect earthquakes.
Website used -> https://volcanoes.usgs.gov/observatories/cvo/ http://www.directionsmag.com/entry/mount-sthelens-map-resources/123624 http://earthscience.stackexchange.com/questions/4490/what-caused-a-measurable-patch-of-mt-st-helens-ash-to-be-deposited-across-okl https://en.wikipedia.org/wiki/Mount_St._Helens http://www.carolina.com/teacher-resources/Interactive/volcano-in-the-classroom/tr29801.tr https://en.wikipedia.org/wiki/Mount_St._Helens https://www.e-education.psu.edu/geosc10/l3_p4.html https://www.e-education.psu.edu/geosc10/l3_p4.html http://www.appstate.edu/~abbottrn/vlcns/sthlns.html https://www.reference.com/science/damage-did-mount-st-helens-cause-18899e020c24ab7e?qo=contentSimilarQuestions https://volcanoes.usgs.gov/volcanoes/st_helens/st_helens_geo_hist_99.html http://www.usatoday.com/story/news/nation-now/2015/05/15/mount-st-helens-eruption-35-anniversary/27170663/ https://pubs.usgs.gov/gip/msh/impact.html https://pubs.usgs.gov/gip/msh/impact.html http://volcano.oregonstate.edu/cost-volcanic-eruptions https://volcanoes.usgs.gov/volcanoes/st_helens/st_helens_hazard_75.html https://www.ready.gov/volcanoes