As per the weather experts, Mumbai is receiving these heavy rains due to a Cyclonic Circulation over Madhya Maharashtra which is 5 km to 9 km above sea level.
The weather forecasting has predicted that the region is likely to receive more rainfall in the next two 2-3 days with the temperature oscillating between 24 degree Celsius and 32 degree Celsius.
According to Skymet, scattered rains accompanied with thunderstorm are likely to batter Delhi-NCR between September 13 to September 15.
Indian Meteorological Department on Wednesday had predicted 'Fairly widespread' to 'widespread rainfall' with isolated heavy to very heavy rainfall in the state of Kerala for the next three days.
Stating details of the overall monsoon in the country, it said, "The monsoon trough passes south of normal position and is active with two embedded cyclonic circulations: one over central Rajasthan and the other one over northwest Bay of Bengal and neighbourhood."
Strong winds, speed reaching 40-50 kmph, are likely to prevail over west-central and adjoining southwest Arabian Sea, North Arabian Sea and west-central Bay of Bengal.
With the rainfall bringing down the humidity level and the temperature, it also slowed traffic in major areas such as DND flyover, RK Puram and Barapullah flyover. Clouds covered the sky over the national capital for much of the day with a forecast of more rainfall.
The weather department has also predicted heavy rainfall at isolated places over South Interior Karnataka, Konkan and Goa this week.
The weather forecaster also said conditions are becoming favourable for further advance of Southwest Monsoon into remaining parts of Haryana, Punjab and some more parts of Rajasthan during the next 24 hours.