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Away-going Arabian Sea cyclone to hasten pace

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Formation of a depression on Thursday and forecast of an eventual away-going cyclone in the North-East Arabian Sea may have just expedited the withdrawal process of the year 2021 South-West monsoon from the western-most outpost of the country bordering Pakistan.

India Meteorological Department (IMD) said that 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 commencement of the withdrawal process.

Meanwhile, the 2021 South-West monsoon drew to a close on Thursday generating normal rainfall (99 per cent of the Long-Period Average (LPA) even as IMD predicted a normal North-East monsoon (monsoon in reverse) for the South Peninsula from October to December.

An analysis of the rainfall spread reveals that the June-September rainfall is normal over North-West India (96 per cent) and Central India (104 per cent). It was below normal over the East and Northeast India (88 per cent) while being above normal over the South Peninsula (111 per cent).

Unique season this year

The 2021 season is unique if only for its distinct and contrasting month to month variation, according to Mrutyunjay Mohapatra, Director-General, IMD. The rainfall over country as a whole was 110 per cent, 93 per cent, 76 per cent and 135 per cent of the LPA in June, July, August and September respectively.

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