After a break, the Southwest Monsoon has started reviving and rainfall activity has started to increase over south India, the India Meteorological Department said on Monday.

IMD Director General Mrutunjay Mohapatra said a low pressure is likely to form over the west-central Bay of Bengal off Odisha-north Andhra Pradesh coasts during the next 24 hours.

"There will be a revival of rainfall activity. Under the influence of this system, rainfall activity is likely to increase over the northern part of the southern peninsula and central India," Mohapatra said.

However, subdued rainfall activity is likely to continue over north India and Gujarat, the IMD said.

After heavy rains in the second half of July over several parts of the country, there was a lull in the rainfall activity.

The IMD said fairly widespread to widespread rainfall activity is likely over Gangetic West Bengal, Odisha, Bihar, Jharkhand, coastal Andhra Pradesh, Telangana, Madhya Pradesh, Chhattisgarh and Vidarbha during next five days.

Isolated heavy falls are likely over coastal Andhra Pradesh on August 17, Telangana on August 18 and 19, over Jharkhand from August 16-19, over the Gangetic West Bengal on August 16 and 17, sub-Himalayan West Bengal and Sikkim during August 16-20.

Rainfall activity over Madhya Pradesh will increase from August 17 to 19; over Chhattisgarh and Vidarbha from August 16 to 18. Isolated heavy to very heavy falls are also very likely over coastal Andhra Pradesh on August 16; Odisha and Telangana on August 16 and 17, and Vidarbha on August 18.

Fairly widespread to widespread rainfall activity is very likely over Maharashtra (except Vidarbha area) during next three days till August 19 with reduction thereafter.

Isolated heavy falls are very likely over these areas during August 16 and 17 heavy to very heavy falls are very likely on August 19.

Fairly widespread to widespread rainfall activity with isolated heavy falls are very likely to continue over northeast India and sub-Himalayan West Bengal and Sikkim during next 4-5 days.

Isolated heavy to very heavy falls are also very likely over Assam, Meghalaya on August 16 and 17, Arunachal Pradesh on August 17, and Nagaland, Manipur, Mizoram and Tripura on August 16.