Thiruvananthapuram/New Delhi: The South-west monsoon on Sundaay made a grand entry in Kerala, bringing copious rains and thus cheered the farming community of the state the Indian Meteorological Department said. The onset of southwest monsoon over Kerala heralds the beginning of rainy season in the Indian sub-continent and sowing of kharif crops like rice, pulses and oilseeds starts with the arrival of the first rains.


The onset of southwest monsoon over Kerala heralds the beginning of rainy season in the Indian sub-continent and sowing of kharif crops like rice, pulses and oilseeds starts with the arrival of the first showers..

All the major parameters showed the onset of SW monsoon over Kerala and conditions were favourable for its further advance into remaining parts of Arabian sea and some parts of
Karnataka and Tamil Nadu in the next two to three days, the IMD station here said.

"Southwest monsoon has set in over most parts of South Arabian Sea, Kerala, some parts of Tamil Nadu, South Bay of Bengal and south Andaman Sea," the weather office announced
here.

The arrival of monsoon which lasts till September almost matched IMD's forecast of its onset, station director K Santhosh said. Earlier this month, the IMD had said that monsoon would reach Kerala on May 31 with a model error of four days.

Rainfall record


More than 60 per cent of rain monitoring stations in Kerala registered rainfall in the last 24 hours ending at 0820 hrs.

The following stations recorded very heavy to heavy rainfall in cms: Kumarakom (Kottayam dt) 14, Cherthala (Alapuzha dt) 12, Irinjalakuda (Thrissur dt) 11, Mancompu (Alapuzha dt) and Kottayam 10 each, Haripad (Alapuzha dt)  9, Mudibidre (Dakshina Kannada dt), Kochi Airport, Aluwa (Ernakualam dt), Kayamkulam (Alapuzha dt) and Vaikom (Kottayam dt) 8 each and Kozhikode  7.

Rain or thundershowers would occur at most places over Kerala, Lakshadweep, at many places over Coastal Karnataka and at a few places over Tamil Nadu, Puducherry and South Interior Karnataka.  while Isolated rain or thundershowers may occur over North Interior Karnataka and Andhra Pradesh, the IMD said.

Conditions favourable for advance

Blowing o-f wind from western direction and persistent clouds over the Arabian Sea, Kerala Coast and over the Lakshadweep islands were some conditions that favoured the onset of the monsoon, the official said.

"Conditions are favourable for the advance of southwest monsoon over some more parts of the Arabian Sea, remaining parts of Kerala, some more parts of Tamil Nadu, south Bay of Bengal, Andaman Sea and some parts of Karnataka in the next 2-3 days," the India Meteorological Department said.

The IMD has also forecast that rainfall during the four month season was "most likely" to be normal this year at about 98 per cent of the Long Period Average with a model error of plus or minus five per cent.

Among other conditions, several international models monitoring El Nino-La Nina have indicated that temperature of sea surface over equatorial Pacific was warming up.

As per recent forecasts by international models, for  the period from June-August season, there was a very good chance for the neutral condition to continue -- a probability of 57 per cent -- against a 22 per cent probability for the re-emergence of La Nina conditions and a 22 per cent probability for the development of El Nino conditions.

IMD to monitor phenomena

IMD officials emphasised that they would keep a close watch on the phenomena to ensure that the country was well prepared in case of any major changes.

Scientists would also closely monitor the developments relating to Indian Ocean Dipole, which relates to anomalies in the sea surface temperatures between eastern and western parts of Indian Ocean.

Weather Warnings

Isolated heavy to very heavy rainfall will occur in Kerala and isolated heavy rainfall will occur in Lakshadweep during next 48 hours.

Strong onshore winds from westernly direction speed occasionally reaching 45-55 KMPH is likely along off Kerala coast and over Lakshadweep area during next 24 hours.

Squally weather with wind speed reaching 50 Kmph is likely to prevail along and off Kerala coast and Lakshadweep area during next 24 hours.

(JPN/Agencies)