On This Day: June 7th

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June 7th 1991 was the date that Mt.Pinatubo had its first magmatic eruptions, it generated ash columns 7 km high. The 1991 Mt.Pinatubo eruption was the second largest volcanic eruption of the 20th century, and it was by far the largest eruption to affect a densely populated area. The eruption was a colossal one, it recorded a 6 on the Volcanic Explosivity Index (VEI). Other famous eruptions on the 6 rating include Krakatoa and Novarupta.

The impacts of the eruption include:

  • About 20,000 people evacuated
  • Approximately 800 people were killed and 10,000 people left homeless
  • Release of 17 megatons of sulphur dioxide into the atmosphere, causing global cooling by 0.5 °C (32.9 °F) between 1991-1993
  • Huge destruction left in surrounding areas

 

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