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Saffir-Simpson scale to measure size of hurricane

Posted on : 12 Dec 2019

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  • Hurricane - A hurricane is a large rotating storm with high speeds of wind that gust at least 74 mph that forms over warm waters in tropical areas.
  • Hurricanes have three main parts, the calm eye in the center, the eye wall where the winds and rains are the strongest, and the rain bands which spin out from the center and give the storm its size
  • In the southern hemisphere, hurricanes rotate in a clockwise direction, and in the northern hemisphere they rotate in an anti-clockwise direction. This is due to what’s called the Coriolis force, produced by the Earth’s rotation.

How are hurricanes formed?

  • Hurricanes begin as tropical disturbances in warm ocean waters with surface temperatures of at least 80 degrees Fahrenheit (26.5 degrees Celsius). Those low-pressure systems are fed by energy from warm seas.
  • A storm with wind speeds of 38 miles (61 km) an hour or less is classified as a tropical depression. It becomes a tropical storm—and is given a name, according to conventions determined by the World Meteorological Organization—when its sustained wind speeds top 39 miles (63 km) an hour.
  • Hurricanes are enormous heat engines that deliver energy on a staggering scale. They draw heat from warm, moist ocean air and release it through condensation of water vapor in thunderstorms.
  • Hurricanes spin around a low-pressure center known as the eye. Sinking air makes this 20- to 40-mile-wide (32- to 64-kilometer-wide) area notoriously calm. But the eye is surrounded by a circular “eye wall” that contains the storm’s strongest winds and rain.

Article Related Questions

  1. Saffir-Simpson scale is used to measure which one of the following?

  2. 1.Intensity of earthquake

    2.Size of hurricane

    3.Height of rainfall

    4.To estimate the loss during forest fires

    Right Ans : Size of hurricane


  3. The 1857 Uprising was the culmination of the recurrent big and small local rebellions that occured in the preceding hundred years of British Rule. Elucidate (Answer in 150 words) - 2019 Mains


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