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Which one of the following statements is/are correct about the "Norwesters"?

Which one of the following statements is/are correct about the "Norwesters"? Correct Answer All the above

The correct answer is Option 4, i.e All the above.

  • Norwesters or the Kalbaishakhi is a local rainfall and thunderstorm which occurs in India and Bangladesh.
  • The direction of squalls is mainly from the northwest and they are called Norwesters (Squall – a sudden, violent gusty wind).
  • Kalbaishakhi occurs with increasing frequency from March till monsoon establishes over North-East India.
  • Kal Baisakhi originates in the Chhotanagpur Plateau, in and around the cities of Ranchi and Jamshedpur.
  • In times of incursion of moist air in these elevated regions, amidst high temperatures, these extremely destructive thunderstorms occur.
  • The first sign of Norwester is a low bank of a dark cloud in the northwest region, the upper outline of which has the appearance of an arch.
  •  It approaches slowly at first and then rapidly with a strong gust or squall.
  • Sometimes the wind blows with almost hurricane force.

Other pre-monsoon showers

  • Tea showers in Assam (they are good for tea, jute, and rice)
  • Mango showers in Kerala and coastal areas of Karnataka as they help in the early ripening of mangoes.
  • Cherry Blossoms/ Coffee showers in Kerala and nearby areas (good for coffee plantations)

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