Mt. St Helen's

By Maddie Fernandez

  • 12:30 pm

    Hear a small explosion of steam and gas.
  • Period: to

    Start to end

  • 12:30 pm

    Coldwater 1 was set up to observe the volcano.

  • 10:50 am

    18 small burst of steam and ash throughout the day.

  • No time

    Scientists discover a bulge on the north side of the mountain. Magma has encountered a blockage and is being forced around it.

  • No time

    Coldwater two was set up 5 miles northeast of the summit for observation.

  • 5 pm

    There was an earthquake (4.5).

  • 9:45 am

    Ash cloud shifts.

  • 8:30 am

    earthquake

  • 8:32 am

    Mt. St Helen's erupts.

  • 8:33 am

    Two more huge blasts of gas and rocks.

  • 8:55 am

    The heat melts the ice cap, sending 46 billion gallons of water down the mountain.

  • 5:30 pm

    Eruption gradually slows down.

  • First tree

    The first tree was planted

  • National park

    Mt. St Helen's national volcanic monument is established.