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Difficulty: EasyClimate, Weather Systems, and Monsoon of India

Arrange the following Indian cities in the correct chronological sequence of the typical arrival (onset) of the South-West Monsoon, from the earliest to the latest date.

  1. 1Thiruvananthapuram
  2. 2Mumbai
  3. 3Delhi
  4. 4Jaisalmer

Answer

The correct chronological sequence from earliest to latest onset of the South-West Monsoon is: Thiruvananthapuram, followed by Mumbai, then Delhi, and finally Jaisalmer.
The South-West Monsoon typically hits the southern tip of mainland India (Kerala / Thiruvananthapuram) around June 1. As the Arabian Sea branch moves northward along the western coast, it reaches Mumbai around June 10. The monsoon continues its northward and northwestward journey, reaching Delhi in northern India around late June (June 27–30) and finally reaching extreme western Rajasthan (Jaisalmer) around mid-July (July 8–15). Thus, the correct sequence from earliest to latest is Thiruvananthapuram, Mumbai, Delhi, and Jaisalmer.

Step-by-Step Solution

1
Identify the geographical location of each city along the path of the South-West Monsoon.
Thiruvananthapuram is in southern Kerala, Mumbai is on the western coast in Maharashtra, Delhi is in northern India, and Jaisalmer is in far western Rajasthan.
The South-West Monsoon enters India from the southwest and advances systematically towards the north and northwest.
2
Determine the typical onset dates for each city.
Thiruvananthapuram receives monsoon around June 1, Mumbai around June 10, Delhi around June 27, and Jaisalmer around July 8.
The monsoon branch moves progressively northwards along the Western Ghats and northwestward across the Northern Plains.
3
Order the cities sequentially from earliest date to latest date.
Thiruvananthapuram → Mumbai → Delhi → Jaisalmer.
This matches the south-to-north and west-to-northwest spatial progression of the summer monsoon.

Key Concept

Spatial and Temporal Progression of the South-West Monsoon in India
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Topics

Climate, Weather Systems, and Monsoon of India

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