The southwest monsoon, which had remained weak from the second week of August, has once again climbed to an active phase over the State.
India Meteorological Department (IMD), in its bulletin on Sunday, said the State could expect heavy rainfall in isolated places for the next three days.
The numerical weather prediction models of the IMD suggested that the wet spell could extend into the Onam holidays scheduled to begin on September 14.
The State received widespread rainfall on Sunday, with Kudulu in Kasaragod district recording 6 cm of downpour during the 24 hours ending at 8.30 a.m. Thiruvananthapuram, Chengannur, Piravom, Irikkur, and Hosdurg received 3 cm of rainfall each.
Low pressure system
A low pressure system was hovering over west-central Bay of Bengal off Andhra Pradesh coast and the associated cyclonic circulation towered tall up to the mid-troposphere, wheeling the flow of southwest monsoon currents over Kerala and causing widespread rainfall.
This system is not forecast to strengthen further, but it might persist more or less over the same position over the Bay for three-four days.
Excess rainfall
The State has received 25 per cent more rainfall than the long period average monsoon rainfall for the period from June 1 to September 8.
Against a normal rainfall of 1,854.5 mm for the period, the actual rainfall received by the State came to 2,313.9 mm.
Meanwhile, the IMD, in its bulletin issued on Sunday, said conditions were becoming favourable for the commencement of the withdrawal of the monsoon from west Rajasthan and adjoining areas of northwest India during the next 24 hours.
