Well, I don't know if there is an exact answer, but I know that ash from the eruption spread throughout the whole USA
Mt Saint Helens erupted when plates collided together and made the eruption blast! The last time Mt Saint Helens erupted was July, 10, 2008!!!!!!!!!!!!!!!!!!!!!
96 miles
The red exclusin zone was 5km where no activity could take place, the blue where some activity (fertilising trees, logging etc.) could take place was about 15km
Mount St. Helens was formed along a subduction zone, where the Juan de Fuca Plate plate dives under (subducts) the North American plate.
No president died in the Mt. Saint Helens eruption. It is believed Harry S. Truman died during the blast but he, in fact, died eight years earlier in 1972. Harry R. Truman (no relation) was the caretaker of the Mt. Saint Helens lodge and was killed in the explosion.
Sideways (Lateral Blast).
big!!
Mt Saint Helens erupted when plates collided together and made the eruption blast! The last time Mt Saint Helens erupted was July, 10, 2008!!!!!!!!!!!!!!!!!!!!!
closest big town to the Mt St Helens National Monument & visitor center is Longview WA.
mt st. helens
Yes.
96 miles
At Mt. St. Helens.
The red exclusin zone was 5km where no activity could take place, the blue where some activity (fertilising trees, logging etc.) could take place was about 15km
Mount St. Helens was formed along a subduction zone, where the Juan de Fuca Plate plate dives under (subducts) the North American plate.
Mt. St. Helens Mt. St. Helens
No president died in the Mt. Saint Helens eruption. It is believed Harry S. Truman died during the blast but he, in fact, died eight years earlier in 1972. Harry R. Truman (no relation) was the caretaker of the Mt. Saint Helens lodge and was killed in the explosion.