Mt St Helens Volcanic Eruption 1980 MEDC
- Created by: ED00
- Created on: 07-05-16 20:28
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- Responses?
- Immediate
- Mobilising helicopters.
- Emergency treatment in nearby towns
- Ash cleared out to allow traffic flow.
- Masks were sent out.
- Mobilising helicopters.
- Long term
- Buildings/bridges were rebuilt.
- Forests in the North being replanted.
- Roads being rebuilt (tourists a consideration).
- Immediate
- Effects?
- Short term
- 57 people killed and 250 homes destroyed.
- Spirit lake filled.
- Roads/bridges washed away and every tree 250km/2 washed away!
- Long term
- Loss of farm income as 12% crops destroyed.
- Small eruptions continued until 1986.
- Costs for repairs reached $2.74 billions!
- Short term
- Where and when?
- North of USA near the Canadian boarder. Washington State.
- Juan plate meets North American plate.
- May 18th 1980.
- Causes?
- Volcano had been active for over 100 years.
- Sits on destructive plate margin.
- During 80s, large bulge developing on the snow covered upper Northern slopes which could trigger great avalanches or eruptions.
- Mt St Helens Volcanic Eruption 1980 MEDC
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