the north face boots Helens Timeline
May 18, 1980: St. Helens eruption, with its lateral blast, debris avalanche, mudflows and floods, claims 57 lives and obliterates virtually everything within an eight mile radius. An ash column rises 15 miles and travels east at 60 mph, circling the globe in two weeks.
?June October 1980: Continuing eruptions destroy a lava dome inside the crater. A new dome forms.
September 1980: Weyerhaeuser Co. begins salvaging some of the 62,000 acres of timber and young plantations damaged by the blast.
Aug. 27, 1982: President Reagan signs a bill establishing the 110,000 acre Mount St. Helens National Volcanic Monument.
1987: Volcano summit reopened to recreational climbing. Army Corps of Engineers builds a dam to hold back sediment carried downstream by the North Fork of the Toutle.
1994: The reconstructed 52 mile long Spirit Lake Memorial Highway opens to traffic, connecting Castle Rock to stunning viewpoints in the blast zone. Forest Service opens the Johnston Ridge Observatory five miles from the crater.
?Sept. 23, 2004: The mountain stirs with a flurry of earthquakes.
Oct. 2, 2004: Sustained tremors inside the mountain indicate movement of magma. The Forest Service evacuates visitors from Johnston Ridge Observatory.
Oct. 11, 2004: Lava emerges on the crater surface for the first time in 18 years.
Nov. 5, 2004: New dome reaches 26 million cubic yards.
Jan. 16, 2005: A 17 minute explosive eruption destroys instruments inside the crater.
March 8, 2005: The mountain sends ash and steam to an altitude of 36,000 feet, wowing spectators just before sunset. 2008: Dome building slows to a halt and seismic activity drops.