Severe Thunderstorms

Formation

  • Uneven air, lift, and moisture
  • When the air is humid and wet
  • From puffy rain clouds
  • When the sun produces heat which shoots back up as clouds
  • From High moisture levels
  • From large temperature differences between the rising air and the surrounding air
  • When the warm air mass rises
  • When moist air is strongly heated by contact with a section of the Earth’s surface
  • During a severe thunderstorm, the temperature has to be at least 32 degrees or the rain will turn into snow

Type of cloud they come from:

  • Puffy rain clouds

Average temperature in a thunderstorm:

  • About 45 degrees

What has changed to prevent the loss of life in severe weather conditions?

  • Local tornado sirens
  • National weather service radar and storm forecasters
  • Red Cross disaster relief
  • Regulations about buildings that have to meet certain standards

Historical Facts

Number of deaths, damage total, and products damaged in a thunderstorm 75+ years ago:

  • 268 people died
  • 1,874 were badly injured
  • damaged homes and vehicles
  • National guard called in

    Number of deaths, damage total, and products damaged in a thunderstorm one decade ago:

    • At least 11 deaths
    • Severe damage to many cities across these states.
    • April 2006 a line of severe thunderstorms caused damage in Tennessee, Mississippi and Alabama, Arkansas, Kentucky and Virginia

    Human impact

    Over the years, people have changed many things to prevent the loss of life, like:

    • National weather service radar and storm forecasters
    • Local tornado warning systems
    • Regulations about buildings that have to meet certain standards
    • Red Cross provides disaster relief right away when a severe storm hits

    Glossary

    • Low pressure systems - areas with low pressure
    • High pressure systems - areas with high pressure
    • Warm air mass - warm air
    • High moisture levels - levels of high moisture
    • Regulations - machinery equipment
    • Red Cross Disaster Relief - a company that helps pay for the loss of property after tornadoes or hurricanes
    • National Weather Service - a service that predicts the weather

    Severe Thunderstorms In Colorado (below)

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