The India Meteorological Department on Monday announced the onset of the Northeast monsoon.

According to the Department, the South West monsoon has further withdrawn from the remaining parts of the country, Bay of Bengal and Arabian Sea. It withdrew from the entire country on October 21. Simultaneously, the North East monsoon rains commenced over Tamil Nadu, Kerala and adjoining areas of Andhra Pradesh and Karnataka on Monday.

“There is a well marked low lying 200 km east of Chennai,” said Y.E.A. Raj, Deputy Director-General of Meteorology, Regional Meteorological Centre, Chennai.

Isolated heavy to very heavy rain at a few places would occur over coastal Tamil Nadu, Puducherry, coastal Andhra Pradesh, Rayalaseema and Kerala during the next 48 hours. Isolated heavy rain may also occur over interior Tamil Nadu during the same period.

On Monday, observatories such as Nungambakkam, Meenambakkam, Sholavaram, Red Hills and DGP office recorded more than 7 cm of rain. Districts such as Krishnagiri, Perambalur, Ramanathapuram and Tanjavur have 15 per cent excess rainfall. Municipal Administration and Law Minister K.P.Munusamy on Monday organised a disaster preparedness meeting in Chennai.

Isolated heavy to very heavy rain forecast in coastal Tamil Nadu, Puducherry in next 48 hours