On May 18, 1980 at 8:32, Mount Saint Helens erupted, one of the biggest eruptions of the century. Before the eruption, the height of the volcano was 9,677 feet. After the volcano, however, it lost 1,314 feet making it 8,363 feet tall. The eruption caused a lot of destrution including a lateral blast that covered 230 square miles of fertile land coming out at 300 miles per hour. Mudflows, pyclastic flows, ash, and a few other things contributed to the destruction of the ferile area for miles around.
Active or Dormat
Mt. St. Helens is still active because it is a Stravo Volcano. Also known as a Composite Volcano which means a tall, cone-shaped mountain in which layers of lava alternate with layers of ash and other volcanic materials. Active Volcanos are volcans that are likely to explode soon. I it were dormat, it means that i would not explode soon. Mount Saint Helens is still likely to explode an has done so in the last 100 years. If it were to explode all the land that has been slowly recovering from the last explosion would be destroyed again.
Mount Saint Helens is located 96 miles south of the city of Seattle and 53 miles north of Portland Oragon this volcano got its name from the english word Lord St. Helens.This volcano is located in a cascade range and it is one of the many pacific volcanos of the ring of fire, it is knwn for the major explosions and pyroclastic flows.
Mt. St. Helens tempature could reach up to, 572'F. Some of these small eruptions were accompanied by avalanches of hot rock, snow, and debris. These eruptions are probably related to the hot springs and streams fed by heated, mineral-rich water near the mouth of the crater. Since 1980, hundreds of small ash producing eruptions have sent billowing plumes of stream and ash as high as 15,000 ft. into the air. The eruption in 1980 killed at least 18 people and 71 people were missing. The ash went 63 thousand ft. high.