Prior to this eruption, on March 27 of the same year “a steam explosion and crater opening occurred at the mountain’s peak.” For a few weeks, this steam continued to come out of the crater that was growing on the mountain as well as ash. Then, towards the end of April, people began noticing a bulge on the north side of the mountain that continuously grew larger. By the time the volcano erupted, the “north side of Mount St. Helens bulged out 300 feet and increase[ed] at a rate of five or six feet a day. This was caused by magma rising inside the mountain” which led to Mount St. Helens erupting. Before this, Mount St. Helens had not exploded or showed signs of volcanic activity in 123
Prior to this eruption, on March 27 of the same year “a steam explosion and crater opening occurred at the mountain’s peak.” For a few weeks, this steam continued to come out of the crater that was growing on the mountain as well as ash. Then, towards the end of April, people began noticing a bulge on the north side of the mountain that continuously grew larger. By the time the volcano erupted, the “north side of Mount St. Helens bulged out 300 feet and increase[ed] at a rate of five or six feet a day. This was caused by magma rising inside the mountain” which led to Mount St. Helens erupting. Before this, Mount St. Helens had not exploded or showed signs of volcanic activity in 123