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July 10th 2008
The eruption of Mount St. Helens in 1980 lasted for 9 hours
The last eruptive activity of Mount St Helens was in July of 2008.
Mount St. Helens produced a large eruption in 1980. However, it was not the largest recorded eruption in North America. That title goes to the 1912 eruption of Novarupta in Alaska.
Mt Saint Helens erupted when plates collided together and made the eruption blast! The last time Mt Saint Helens erupted was July, 10, 2008!!!!!!!!!!!!!!!!!!!!!
July 10th 2008
The eruption of Mount St. Helens in 1980 lasted for 9 hours
The last eruptive activity of Mount St Helens was in July of 2008.
Mount St. Helens produced a large eruption in 1980. However, it was not the largest recorded eruption in North America. That title goes to the 1912 eruption of Novarupta in Alaska.
last erupted on 2004-july 10 2008 eruption lasted 9 hours
Mt Saint Helens erupted when plates collided together and made the eruption blast! The last time Mt Saint Helens erupted was July, 10, 2008!!!!!!!!!!!!!!!!!!!!!
The last eruption was in 2008. It started on July 12 and ended in August after being active for five weeks.
Mount St. Helens has been emitting steam and building crater structures since its 1980 eruption, and could have another large eruption in the future. Scientists have been trying to accurately measure the magma pool beneath the mountain and the surrounding area of the Cascades. In September and October, 2004, vented magma began forming a lava dome, replacing part of the mountaintop blown off on May 18, 1980. This process continued for nearly 4 years until July, 2008.
Yes. Mount St. Helens erupted spectacularly on May 18, 1980. Since then it continues to emit ash, lava and steam. As recently as 2008 it emitted an ash cloud. There are also periodic small earthquakes associated with the volcano's activity.
July of 2008! (:
July 14 2008
Mount St. Helens is an active stratovolcano in the Cascade range in the state of Washington, approximately 53 miles (85 km) NE of Portland, OR.On May 18, 1980, an earthquake marked the collapse of the north face of the mountain at 8:32 AM PDT. A violent pyroclastic explosion of magma occurred, hurling huge quantities of rock, ash and dust to the north and east. The eruption continued for more than nine hours before lessening around 5:30 PM PDT. 57 persons were directly killed, forests were flattened, and torrents of ash, mud, and debris choked the nearby rivers, destroying bridges and industry. Much of eastern Washington state was affected by the ash and dust plume.(for other eruptions, see related link)An earthquake at 8:32:17 a.m. on Sunday, May 18, 1980 caused the eruption on Mt St. HelensMt. St. Helens last major eruption was on may 18 1980. But this volcano remains active and often spurts ash and other debris.The last minor eruption of Mount St. Helens was in July of 2008.Mount St Helens last produced a few small eruptions in 2008.The earthquake before the eruption accured at 5.00am and the eruption it's self was at 8.32.