The southwest monsoon has arrived in Kerala before its onset schedule, private agency Skymet Weather announced on Saturday, but India's official forecaster IMD said conditions are not yet ripe for the declaration.
Skymet Weather CEO Jatin Singh said all conditions such as rainfall, Outwave Longwave Radiation (OLR) value and wind speed have been met to declare the arrival of the southwest monsoon over Kerala.
"#JUSTIN Southwest #Monsoon2020 finally arrived on the mainland of India, #Monsoon arrived on Kerala before the actual onset date. All the onset conditions including rainfall, OLR value, wind speed, are met. Finally, the 4-month long festival begins for Indian. #HappyMonsoon (sic)," the private forecaster tweeted.
The onset of monsoon over Kerala marks the commencement of four-month rainy season in the country. The country receives 75 per cent of the rainfall from June to September.
Skymet had predicted that monsoon will hit Kerala on May 28 with an error margin of plus or minus 2 days. Whereas, the India Meteorological Department (IMD) had said the monsoon will make an onset over Kerala on June 5, four days after its normal onset date.
However, earlier this week, it said a cyclonic circulation in the Bay of Bengal will help in advancement of the monsoon and it could reach Kerala on June 1, its normal onset date.
IMD director general Mrutunjay Mohapatra said conditions are still not right to declare onset of monsoon over Kerala.