Volcano - Mount St. Helens

• Situated in Washington State (WEST USA).
• Formed on the Juan de Fuca plate (Oceanic crust) which moves towards the North American plate (Continental Crust) and is forced downwards.
• On the 18th of May 1980 Mount ST Helens blew her top.
• Early in May, the North side was bulging - this was an early indicator.
• Mud exploded and moved down the mountain.
• 61 deaths were reported, most of which were caused by the release of poisonous gasses.
• Trees within 30km radius were destroyed by the wind.
• Floods prevented communication.