Odisha and Chhattisgarh are in the normal range category whereas Jharkhand is rain deficient. Between June 1 and August 11, Odisha has received at par rain. It has received 684.7 mm of rain against the normal of 686.8 mm. Chhattisgarh is surplus by 9% but Jharkhand has not received enough rainfall until now and it is deficient by 44%.
A number of low-pressure areas have developed over the Bay of Bengal during the month of July and during the first 10 days of August. Almost all the weather systems travelled across Odisha and South Chhattisgarh giving good rainfall over these States. Cyclonic circulation has formed over the North Bay of Bengal and adjoining parts of Engineering West Bengal.
Under its influence, a low-pressure area may develop around August 13. It is expected to travel in the West Northwest direction and may intensify into a well-marked low pressure. We expect moderate rain with few heavy spells to lash Odisha, Chhattisgarh, and parts of Jharkhand between August 13 and 15.
Intensity of rain will be more over Chhattisgarh and Odisha. However Southern districts of Jharkhand such as east and west Singhbhum, Jamshedpur, Khunti, Simdega, Gumla, Ranchi, Lohardaga, Bokaro and Lather may receive good rain. Next spell of intense rainfall is anticipated over these States around August 17 and 18.