Isolated heavy rainfall spell over South Peninsular India is expected today and decrease significantly thereafter, according to the Indian Meteorological Department (IMD). A cyclonic circulation is likely to emerge into the northeast and adjoining east-central Bay of Bengal which will result in an increase in rainfall activity with isolated heavy spells over East India from October 2.
The weather forecasting agency said that a cyclonic circulation lies over West central Bay of Bengal off Andhra Pradesh coast and an east-west trough runs from cyclonic circulation over West central Bay of Bengal off Andhra Pradesh coast to Coastal Karnataka.
Under the influence of these systems, Coastal Andhra Pradesh and Yanam, Tamil Nadu, Puducherry and Karaikal are expected to receive widespread light to moderate rainfall with isolated heavy spells of rain on Saturday. IMD has made a similar forecast for East Madhya Pradesh, Chhattisgarh, Bihar, Sub-Himalayan West Bengal and Sikkim for October 4.
Odisha is likely to receive light to moderate rainfall with isolated heavy spells till October 4, with the possibility of very heavy rainfall in some places on October 3 and 4. Jharkhand and Gangetic West Bengal are expected to receive light to moderate rainfall during the next two to three days.