Parts of north Tamil Nadu will experience wet weather till Monday as thunderstorms are set to return over the region, according to the Meteorological Department.
As the earlier depression has moved to the Arabian Sea off the Maharashtra coast, some parts of the State particularly in the north, are likely to receive light to moderate rain, said officials.
Weather conditions may not be favourable at the moment for the onset of northeast monsoon, but the city can expect pre-monsoon spells as weathermen have forecast moderate showers accompanied by thunder and lightning over the city for the next two days, due to an atmospheric circulation. Weather enthusiasts said the city as well as parts of north Tamil Nadu may continue to receive spells till October 28 due to a convergence of opposing winds.
N Puviarasan, director, Area Cyclone Warning Centre, IMD, said due to an upper air circulation and convective activity, several northern Tamil Nadu districts such as Kancheepuram, Tiruvallur, Chengalpet, Villupuram, Kallakurichi, Cuddalore, Tiruvannamalai, Vellore, Ranipet, coastal district of Nagapattinam and eastern districts such as Dharmapuri, Salem and Krishnagiri are likely to receive light to moderate rain or thundershowers for the next 24 hours.
S. Balachandran, Deputy Director General of Meteorology, Chennai, said weather systems were forming continuously in the Bay of Bengal due to the delayed withdrawal of the southwest monsoon.
Another low pressure area is likely to form over the central Bay of Bengal around October 19 and is expected to move towards Andhra Pradesh. This may influence rain over north Tamil Nadu till October 20.