|The rainfall during August (till date) has been close to normal due to formation of low pressure area over the Bay of Bengal and their west-northwestward movement inland. It has resulted in decreasing the deficiency over northwest India. Detailed study on the above seasonal scale monsoon circulation anomalies and associated characteristics are monitored closely to examine their impacts on the ensuing rainfall during the remaining period of August and September, 2012.|
The deficiency to certain extent is attributed to the delayed onset and advance of monsoon over various parts of the country (in a range of 1-2 weeks). The lower frequency of the formation of principal rain bearing cyclonic weather systems (lows and depressions) over the Indian seas of Bay of Bengal and Arabian Seas during the current season (as against the average frequency of about 6-7, only one low pressure area formed so far) is seen to be the main contributing factor for the deficit rainfall distribution observed over the country.
The above information was given by the Minister of State in the Ministry of Planning, Science & Technology and Earth Sciences Dr. Ashwani Kumar to the Parliament today.