The southwest monsoon is showing signs of beginning its withdrawal from northwest India, with a large mass of dry air expected to move into the region after September 19-20. The influx could reduce atmospheric moisture and create conditions favourable for the retreat of the monsoon, with West Rajasthan likely to see the process begin around September 19.
However, the withdrawal may not happen uniformly across the country. A developing low-pressure system over central and eastern India could continue drawing moisture into those regions and sustain rainfall even as drier conditions spread across the northwest.
Forecasts indicate that this weather system could delay the monsoon’s withdrawal from central and eastern parts of India until around September 30. The retreat is expected to progress further once the low-pressure system weakens.
The developing contrast could leave northwest India increasingly dry while central and eastern regions continue experiencing monsoon activity. Normally, the withdrawal begins over northwest India before gradually advancing towards central, eastern and southern parts of the country as atmospheric circulation changes and dry continental air replaces moisture-rich monsoon air.
This year, the retreat could therefore occur in stages rather than as a continuous nationwide process. The movement of dry air into the northwest and the persistence of the low-pressure system farther east will determine how quickly the southwest monsoon finally exits the country.
Conversation
Be kind and stay on topic. Comments are moderated; abuse, spam and personal attacks are removed. Report a problem