Posted Friday 13th Evening:

Weak monsoon conditions are currently in August over large parts of the country. The rains are weak along the West Coast, Rajasthan, Maharashtra and  Peninsula. 

Weak monsoon conditions will last till 15th August and Monsoon is expected thereafter to improve. 

An off shore trough is likely to form off East Coast, extending from Bangladesh to Andhra Pradesh. Embedded in this, a cyclonic circulation will form over Northwest Bay of Bengal on 15 th August. 

This  system will become more marked and also move inland .This may further travel deep over central parts and later  northern parts of the country.

Hence increase in the rainfall along Maharashtra, Goa & Karnataka coast after Monday 15th/16th.

Mumbai will also see simultaneous increase.