A low-pressure area earlier formed over the Bay of Bengal on 11th June and now lies over Coastal Odisha and adjoining parts of West Bengal and Jharkhand. The weather system also has its reach over parts of Bihar, Chhattisgarh, and East Uttar Pradesh. Wind pattern in association with the low pressure is influencing weather as far as East Madhya Pradesh, Maharashtra, and Telangana. Southwest monsoon has made an early advance to all these states and is in the process of covering the remaining parts.
Low pressure is a slow-moving system and is likely to meander over these parts for the next 4-5 days. Meteorologically, such systems influence a large area and persist for longer durations. Heavy rains have lashed many parts of Odisha, Chhattisgarh, West Bengal, and Jharkhand. Chief rainfall amounts being: Kolkata-34mm, Contai 55mm, Cuttack-44mm, Koraput-39mm, Durg-76mm, Raipur-30mm, Bokaro-23mm, Daltonganj-29mm, and Bhagalpur-56mm. Convergence of winds in the peripherals of the system has caused heavy rains over Uttar Pradesh, Maharashtra, Telangana and the significant amounts of rainfall are Bahraich-78mm, Fursatganj-31mm, Parbhani-73mm, Chandrapur-40mm, Nizamabad-64mm, and Adilabad-52mm.
The presence of a low-pressure area has strengthened the Arabian Sea westerly stream along the West Coast. Heavy rains have also lashed Kerala, Coastal Karnataka, Goa and Konkan region. Ratnagiri, Harnai, and Colaba have recorded 243mm, 54mm, and 17mm rainfall respectively. Other significant amounts being; Kozhikode-89mm, Karipur- 89mm, Mangalore-79mm, and Karwar-34mm.
In view of the persistence of low-pressure area without much of significant movement, vigorous to active monsoon conditions are likely over the eastern and central parts of the country. Heavy to very rains accompanied with lightning, thunderstorm and strong winds are likely over Bihar, Jharkhand, Chhattisgarh, Uttar Pradesh, West Bengal, and Odisha. Scattered heavy rains are also expected over Madhya Pradesh, Maharashtra, Kerala, Karnataka, Goa and Konkan. Conditions remain favorable for further advance of monsoon over central and northwestern parts of the country.