On what date did the 1980 eruption of Mount St. Helens, in which "Crater Glacier" was formed, occur?
1980 eruption of Mount St. Helens On May 18, 1980, a major volcanic eruption occurred at Mount St. Helens, a volcano located in Skamania County, in the state of Washington, United States. The eruption (a VEI 5 event) was the only significant volcanic eruption to occur in the contiguous 48 U.S. states since the 1915 eruption of Lassen Peak in California. However, it has often been declared as the most disastrous volcanic eruption in United States history. The eruption was preceded by a two-month series of earthquakes and steam-venting episodes, caused by an injection of magma at shallow depth below the volcano that created a large bulge and a fracture system on the mountain's north slope.
Toutle, Washington Toutle is an unincorporated community in Cowlitz County, Washington. Toutle is located 10 mi east of Castle Rock along Washington State Route 504, which is also known as the Spirit Lake Memorial Highway. The Toutle community, similar to Toutle River, takes its name from the "Hullooetell", a band of the Skillot - a Chinookan tribe. The Toutle community is part of the Toutle Lake School District, a K-12 school district of about 600 students. Toutle is near Mount St. Helens and the Mount St. Helens National Volcanic Monument, which lies at the end of the Spirit Lake Memorial Highway. The eruption of Mount St. Helens on May 18, 1980 was the deadliest and most economically destructive volcanic event in the history of the United States.