2020-12-15 18:58:58

 IBM Weather 
Tuesday, December 15: Following a brief period of largely dry weather, a fresh spell of rainfall, including isolated heavy showers, is set to lash the south Indian states of Tamil Nadu and Kerala for the remainder of this week, starting Wednesday, December 16.

According to the India Meteorological Department (IMD), a new easterly wave is set to affect the weather across south India by bringing fairly widespread thundershowers over Tamil Nadu, Puducherry, Karaikal, Kerala, Mahe, and Lakshadweep from Wednesday to Saturday, December 16-19.

Furthermore, isolated heavy falls are also expected over Tamil Nadu, Puducherry, and Karaikal during December 16-19.

In view of these predictions, the IMD has issued a yellow watch over the aforementioned states and territories on all four days, thereby urging the residents to ‘be aware’ of their respective local weather conditions.

IMD’s regional met centre in Chennai has forecast that the districts within the Northern Coastal subdivision of TN, especially the likes of Chengalpattu, Villupuram, Puducherry, Cuddalore, Mayiladurai, Nagapattinam, Karaikal, Tiruvarur, and Thanjavur are expected to receive isolated heavy rainfall.

As for Kerala, all the districts across the state may experience light to moderate showers, predicts IMD Thiruvananthapuram.

Following this rain spell, an even more intense round of showers appears to be on the cards, as the IMD has forecast heavy to very heavy falls raining down over Tamil Nadu on December 20-21.

Meanwhile, since the beginning of the post-monsoon season on October 1, a combination of several cyclones, low pressure systems, and the northeast monsoon has brought ample rainfall over the southern peninsular region of India.

The state of Tamil Nadu has recorded 432.2 mm precipitation between October 1 and December 14—5% more than the long-term average rainfall it records in this period. Kerala, on the other hand, has registered 357.6 mm rainfall, which marks a 26% deficit compared to its long-term average.