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Tropical Storm
Recently, a Category 4 tropical cyclone Kyarr formed over the Arabian Sea, becoming the strongest storm recorded in the area for 12 years. Consider the following statements about the tropical storm:
- A tropical cyclone is a storm system characterized by a large low-pressure center, a closed low-level circulation and a spiral arrangement of numerous thunderstorms that produce strong winds and heavy rainfall.
- A mature tropical cyclone is characterised by the strong spirally circulating wind around the centre which is called the eye.
Choose the correct answer from the codes given below:
A |
Only 1
|
|
B |
Only 2
|
|
C |
Both 1 and 2
|
|
D |
Neither 1 nor 2
|
Your Ans is
Right ans is C
Your Answer Is Correct
Your Answer Is Wrong
Explanation :
- A tropical cyclone is a storm system characterized by a large low-pressure center, a closed low-level circulation and a spiral arrangement of numerous thunderstorms that produce strong winds and heavy rainfall.
- Most tropical cyclones originate in the doldrums near the Equator, approximately 10 degrees away.
- The weakest tropical cyclones are called tropical depressions. If a depression intensifies such that it’s maximum sustained winds reach 39 miles per hour, the tropical cyclone becomes a tropical storm.
- Once a tropical cyclone reaches maximum sustained winds of 74 miles per hour or higher, it is then classified as a hurricane, typhoon, or tropical cyclone, depending upon where the storm originates in the world.
Eye of Cyclone
- A mature tropical cyclone is characterised by the strong spirally circulating wind around the centre which is called the eye. It is an area with calm weather descending air.
Conditions for formation of Tropical Cyclone-
- Large sea surface with a temperature higher than 27° C
- Presence of the Coriolis force
- Small differences in the vertical wind speed
- A pre-existing weak- low-pressure area or low-level-cyclonic circulation
- Upper divergence above the sea level system.
Cyclone names in different regions-
- Cyclones in the Indian Ocean
- Willy-willies in Western Australia
- Hurricanes b Atlantic
- Typhoons in the Western Pacific and the South China Sea
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