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Delhi: August likely to end with lowest rainfall in at least 14 years

Weather experts attribute the lack of rainfall this month to the development of three low-pressure areas over the northwest Bay of Bengal which pulled the monsoon trough over central India and did not let it move to the north for a long period.

PTI Reported By: PTI New Delhi Published on: August 29, 2022 20:50 IST
Monsoon clouds hover in the sky, in New Delhi
Image Source : PTI Monsoon clouds hover in the sky, in New Delhi

Highlights

  • August is slated to end with the lowest rainfall in Delhi in at least 14 years
  • The monsoon activity over northwest India will remain subdued for the next six to seven days
  • The deficit is likely to persist with subdued rains predicted for September

Delhi rainfall: With a good spell of rain unlikely over the next two days, August is slated to end with the lowest rainfall in Delhi in at least 14 years.

Weather experts attribute the lack of rainfall this month to the development of three low-pressure areas over the northwest Bay of Bengal which pulled the monsoon trough over central India and did not let it move to the north for a long period.

They said the monsoon activity over northwest India will remain subdued for the next six to seven days.

According to the India Meteorological Department (IMD) data, the Safdarjung Observatory, Delhi's primary weather station, has recorded a paltry 40 mm of rainfall against a normal of 222.9 mm so far this month.

Normally, the city gauges 247 mm of precipitation in August, the wettest month of the year. According to data available on the IMD website, the capital recorded 214.5 mm of rainfall in August last year, 237 mm in 2020, and 119.6 mm in 2019.

"Three low-pressure areas developed over the northwest Bay of Bengal in August which travelled across Odisha, Chhattisgarh, Madhya Pradesh, Rajasthan, and south Pakistan, giving good rains there.

"The LPAs kept the monsoon trough south of its normal position for a long time. Delhi and other parts of northwest India received rain only when the trough passed over the region while moving to the foothills of the Himalayas," said Mahesh Palawat, vice president (climate change and meteorology), Skymet Weather.

Usually, the trough is seen running through Sri Ganganagar, Delhi, Allahabad, Jharsuguda, Kolkata, and North Bay of Bengal. Palawat said the monsoon will remain subdued over northwest India over the next one week.

The IMD has also predicted subdued rainfall activity over northwest and central India during the next five days. The weather bureau had predicted normal to above normal rainfall in August over northwest India.

Overall, the Safdarjung Observatory has logged 350.8 mm of rainfall against a normal of 506.7 mm since June 1 – when the monsoon season usually starts — clocking a deficit of 31 per cent.

The deficit is likely to persist with subdued rains predicted for September. A bountiful monsoon had yielded 1,169.4 mm of rainfall last year, the third highest since 1901.

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