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Monsoon to be below normal over north, south India: IMD

New Delhi | The overall monsoon across the country is “most likely” to be normal this season but it will be below normal over north and south India, the India Meteorological Department said in its forecast Friday.

The El-Nino phenomenon, generally believed to have its impact on monsoon, will continue during the rainy season. However, there is a possibility of these conditions to turn neutral during the later part of the rainfall season, the IMD said. The El-Nino is linked to the heating of Pacific waters.

Monsoon is likely to be below normal in July and normal in August. “Rainfall over the country as a whole for the 2019 southwest monsoon season is most likely to be normal,” the IMD said. It is likely to be 96 percent of the Long Period Average, the IMD said.

The LPA over the country as a whole from 1951-2000 is 89 centimeters. Anything between 96-104 per cent of the LPA is normal.

Monsoon is categorised as below normal if the LPA is between 90-96 percent and classified as deficient, if below that. Anything above 110 percent of the LPA is classified as excess.

Region-wise, the seasonal rainfall is likely to be 94 percent of LPA over north-west India, 100 percent of LPA over central India, 97 percent of LPA over southern peninsula and 91 percent of LPA over northeast India, all with a model error of plus or minus 8 percent.

The northwest India sub-division of the IMD covers the entire north India, while the central India subdivision encompasses states like Madhya Pradesh, Maharashtra, Goa, Gujarat and Chhattisgarh.

The northeast India subdivision covers states of West Bengal, Bihar, Odisha, Jharkhand and the entire northeast, while the southern peninsula covers the five states of the south and the Union Territory of Puducherry.

“The monthly rainfall over the country as whole is likely to be 95 percent of its LPA during July and 99 percent of LPA during August both with a model error of plus or minus 9 percent.

“The current weak El Nino conditions over Pacific are likely to continue during the monsoon season with some possibility of these conditions to turn to neutral ENSO conditions during the later part of the monsoon season,” the IMD said.

The monsoon is likely to make an onset over Kerala around June 6, five days after its normal onset date.

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