The onset of monsoon on the Kerala coast,signalling the arrival of the four-month rainfall season in India,is likely to happen on June 3 this year,the meteorological office said on Wednesday. This is two days behind what is considered to be the normal date of onset.
The meteorological office said that the Andaman Sea,south of Kerala coast,might receive rainfall slightly earlier than its normal date in the third week of May,but that would not result in an advance of monsoon northwards as well. The southwest monsoon normally advances over Andaman Sea around 20th May with a standard deviation of about a week. This year,under the influence of tropical cyclone Mahasen,currently located over the central Bay of Bengal,low-level cross-equatorial monsoon flow has appeared over south Andaman Sea and adjoining south Bay of Bengal, the Indian Meteorological Department said in a statement. Further strengthening and deepening of cross-equatorial flow during the next few days is likely to result in increased rainfall activity over the area. This may lead to advance of monsoon over Andaman Sea,slightly earlier than its normal date.
Last year,the onset of monsoon over Kerala coast was predicted to happen on June 1 but had a delayed arrival. Last month,the met department had forecast normal monsoon rainfall this season,predicting 98 per cent rains.