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New Delhi: The southwest monsoon rains are likely to start withdrawing from the northwest region from October 6, marking one of the most delayed retreats of the seasonal rainfall. The normal date for the commencement of monsoon withdrawal is September 17. Last year, the monsoon started withdrawing from western parts of northwest India on September 28.  

The southwest monsoon, which is vital for India’s farmers, usually arrives at the southernmost Kerala coast around June 1 and starts retreating in mid-September from the north-western state of Rajasthan bordering Pakistan.

As per the IMD data, India received 874.6 mm rainfall as against the normal of 880.6 mm, a deficiency of one percent so far.  Of the 694 districts across the country, 161 districts spread in nine sub divisions have faced deficient rainfall this year.

In its latest forecast, the India Meteorological Department (IMD) on Thursday said the conditions are favourable for commencement of withdrawal of southwest monsoon from some parts of northwest India from October 6, 2021. The movement of the depression away from the Indian coast along with a barrage of monsoon winds will allow drier westerly to north-westerly winds to establish over North-West India and



trigger the commencement of the withdrawal process.

“Quantitatively, the 2021 all India monsoon seasonal rainfall during June 1 to September 30 has been 87 cm against the Long Period Average of 88 cm of 1961-2010 (99 percent of its LPA),” IMD Director General M Mohapatra said.

The southwest monsoon starts withdrawing from west Rajasthan first. The southwest monsoon saw delayed withdrawals in 2017, 2018, 2019 and 2020. In the year 2019, the southwest monsoon commenced withdrawal rather late on October 9and got completed in the shortest record time of 8 days, on October 17. During last year 2020, the process started late yet again, on September 28 and delayed withdrawal completes a hat trick with 2021 following the same track.

This year cyclones delayed the retreat and most parts of the country received heavy rainfall this week, which damaged summer-sown crops ready for harvesting. A delayed withdrawal of monsoon also means a delayed onset of winter.

Currently, there is a low-pressure area and its associated cyclonic circulation prevailing over east Rajasthan and the neighbouring areas, which is keeping rainfall activity steady over Maharashtra and parts of central India.



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