Most of East India is rain-deficient. Between June 1 and September 1, Bihar is rain deficient by 27% and Jharkhand is deficient by 37%. The weather in both states remained almost dry until the end of July with occasional light to moderate rain. The northern district of Bihar witnessed a few good spells of rain in the month of August. The weather of states has gone dry once again and rain deficiency is increasing.
A cyclonic circulation will develop over the Northwest Bay of Bengal soon and under its influence a low pressure area is expected to form. The low-pressure area will move in a westerly direction. A trough will be extending from this low-pressure area up to the northern parts of Bihar leading to the commencement of rain activities once again.
Initially, the weather activities will be over eastern parts of Bihar and Jharkhand. There will be a gradual increase in the intensity and spread of rain. By September 5th, we expect most parts of Bihar and Jharkhand to start receiving good rain. The intensity of rain may start decreasing after the 10th of September, but scattered showers will continue over both states at least until the first half of September.
This extended rain spell will be a boon for the farming communities who are eagerly waiting for rain.