CHENNAI: Light daytime breeze, moderate showers and an overcast weather, northeast monsoon may be back after a break as weathermen have forecast rainfall in coastal areas including Chennai at least for the next 48 hours due to a cyclonic circulation near Sri Lanka.
Private forecasters and bloggers said this time again, like cyclone Burevi, the weather conditions are favourable to bring more rainfall over southern districts till December 19 than over Chennai and its suburbs. For the next 48 hours, regions in and around Chennai are likely to receive light to moderate spells of rainfall over some areas with the skies being generally cloudy. Maximum and minimum temperatures will be around 29°C and 23°C.
According to IMD’s five-day forecast for the state, a few places over coastal TN may receive moderate rain or thundershower while there are chances of light to moderate spells or thundershower over a few places in the interior regions. Heavy rainfall is likely at isolated places over Thanjavur, Tiruvarur, Nagapattinam, Mayiladuthurai and Pudukottai between December 16 and 18. “Monsoon spells are back due to a, cyclonic circulation prevailing near east of Sri Lanka over the southwest Bay of Bengal,” IMD officials said. The circulation, while pulling all the easterly winds, could lead to wind convergence over the land resulting in convective rainfall along the coast and interior regions of the state.
While Chennai and its suburbs have so far recorded an excess of 42% rainfall since October 1 with 1027.1mm against a normal 725.6mm, Tamil Nadu has recorded 431.7mm against a normal 413.9mm with a 4% excess.
Some parts of southern Tamil Nadu started receiving rain on Tuesday evening. As of 10pm, Nagapattinam recorded traces, Pamban registered 25mm, Tondi 0.3mm and Tuticorin (3mm). Till 8pm, Tuticorin Port recorded 13.5mm, Tirunelveli 9mm, Sathankulam 4.5mm, Kovilpatti 5mm and Radhapuram 4mm till 7.30pm.
Skymet Weather on Tuesday said along with the circulation, there is a trough extending up to the south coast of Tamil Nadu. The trough and the easterly wave or an elongated region of relatively low pressure could bring rainfall activities along Tamil Nadu coast. “This may be the last heavy spell of rain over Tamil Nadu during this northeast monsoon season,” it said.
But there are chances of another spell over the state around December 25, said weather blogger Pradeep John. “It started raining over some parts in south Tamil Nadu on Tuesday evening. This time it could bring more rain to regions below Puducherry due to strong convergence shifting over that region. Models show there may be another round of spells around December 25 and there are also chances of rainfall over south Tamil Nadu even in January,” he said.
Source: https://timesofindia.indiatimes.com/city/chennai/chennai-monsoon-set-to-return-rain-likely-for-next-48-hours/articleshow/79750572.cms
