Dec. 7, 2021, 6:35 p.m.

By TWC
Tuesday, December 7: After a slow start to the month of December, the northeast monsoon rainfall activity over Southern Peninsular India is expected to pick up this week. Heavy showers have been particularly forecast over the state of Tamil Nadu starting Wednesday, December 8.According to the India Meteorological Department (IMD), isolated to scattered light to moderate rains are on the horizon over Coastal Andhra Pradesh, Kerala and Tamil Nadu on Wednesday and Thursday, December 8-9.

Tamil Nadu will especially experience isolated heavy falls during this 48-hour period as well.

Within the state, the IMD’s regional met centre in Chennai has predicted isolated heavy showers over the northern coastal districts of Cuddalore, Mayiladuthurai, Nagapattinam, Karaikal, Tiruvarur, Thanjavur and Pudukkotai, along with Puducherry on Wednesday. The rest of the districts will experience light to moderate rains. Come Thursday, the same conditions have been forecast across the northern interior districts of Kallakuruchi, Tiruvannamalai, Ariyalur and Perambalur, along with the southern coastal district of Toothukudi.
All the aforementioned districts will also be placed under a yellow watch, with the advisory urging residents to ‘be aware’ of the local weather situation. As for Chennai, the state capital, the likelihood of precipitation will steadily increase up to 24% on Wednesday with partly cloudy skies, and then to 53% on Thursday with a high possibility of morning thundershowers, according to The Weather Channel’s 10-day forecast. The daytime temperatures across the city will hover around 30°C, and drop down to 25°C at night. Meanwhile, since the beginning of the post-monsoon season on October 1, Tamil Nadu has experienced notable above-average rainfall. Between October 1 and December 6, the state has collectively recorded precipitation worth 679.7 mm—a 78% ‘large excess’ as compared to its long-term average for this period (381.1 mm). In the same time frame, the district of Chennai has recorded rainfall worth 1153.2 mm, marking a 71% ‘large excess’ compared to its 672.7 mm average.