Question

Q. Which one of the following conditions is not favourable for formation and intensification of tropical cyclones?

• A.
  Presence of the Coriolis Force
• B.
  Large sea surface with temperature higher than ${27}^{\circ }C$
• C.
  Pre-existing strong-high pressure area
• D.
  Small variations in the vertical wind speed

Answer 1

The correct option is C

Pre-existing strong-high pressure area
Explanation:

Tropical cyclones originate and intensify over warm tropical oceans. The conditions favourable for the formation and intensification of tropical storms are : Presence of the Coriolis Force, Large sea surface with temperature higher than ${27}^{\circ }C$, Pre-existing weak-low pressure area or low-level cyclonic circulation, Upper divergence above the sea level system and small variations in the vertical wind speed

Extra Information:
The tropical storms are known as cyclones in Indian Ocean, Hurricanes in the Atlantic, Typhoons in the Western Pacific and South China Sea and Willy-willies in the Western Australia.