As the southwest monsoon recedes, the Indian Meteorological Department (IMD) announced the arrival of northeast monsoon in Southern India bringing rains to parts of Tamil Nadu, Puducherry, Karaikal among others.

The Northeast monsoon is experienced more prominently in the southern regions comprising Tamil Nadu and Puducherry. Unlike other parts of the country, these regions depend on the northeast monsoons that occur between October and December.

Tamil Nadu receives over 48% of its annual rainfall through the northeast monsoon whereas only 35 % during the southwest monsoons which begin during June.

The northeast monsoon usual arrival date over Tamil Nadu and Southern parts of Andhra Pradesh is October 20, but the monsoons this year arrived four days early on October 16.

This year the arrival of southwest monsoon was delayed by over 20 days making it the most delayed monsoons ever. However, the delayed monsoon extended till October which usually begins withdrawal in September. Thus experts say the annual rainfall received was balanced with an extended monsoon.

Chennai is likely to receive more rainfall in the next 48 hours while the minimum and maximum temperatures are expected to hover around 25 and 31 degrees Celsius respectively.

On October 16, Tiruvallur district’s Poonamallee witnessed a record rainfall of 11 cms. Other areas that witnessed heavy rainfall include Ayikudi in Tirunelveli and Cholavaram in Tiruvallur.


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