Conditions are becoming favourable for further advancement of Southwest Monsoon in remaining parts of Bay of Bengal and Sub Himalayan West Bengal and Sikkim and some parts of Gangetic West Bengal, Odisha, Jharkhand and Bihar.
According to the latest weather update by Skymet Meteorology Division in India, East India has been receiving continuous rain since the 12th of June and showers have been heavy in the last 48 hours. After 24 hours rain will increase and become widespread over terai region of east Uttar Pradesh, Bihar, Bengal, Jharkhand, Odisha and Chhattisgarh.
On Monday many places in West Bengal observed good rain – Burdwan and Coochbehar 16.6 mm, Darjeeling 25 mm, Srineketan 19 mm of rain. Balasore and Keonjhar in Odisha also received 13 mm and 67 mm of rain respectively. In Bihar, Purnea also received 16 mm of rain.
The official onset date of Monsoon in Kolkata is 10th of June but the presence of an El Nino and the absence of a strong Monsoon system in the Bay of Bengal led to the delay in Monsoon over Kolkata and Gangetic West Bengal. However, Sub Himalayan West Bengal has been witnessing good Monsoon showers and is surplus by 16%. It is the only region in the country, besides Andaman & Nicobar Islands and Rayalaseema, to record surplus rain so far.
According to the latest weather update by Skymet Meteorology Division in India, the cyclonic circulation in the Bay of Bengal will give a boost to the monsoon surge only over Northeast India, as against other parts East India as was expected earlier. Currently this weather system is moving towards Myanmar.
Weather models at Skymet suggest that Southwest Monsoon will cover entire West Bengal, Bihar and touch east Uttar Pradesh by the 21st of June.
Till now Kolkata has received over 100 mm of rain as opposed to the normal average of 283.5 mm in the month of June. Weather in Kolkata and Gangetic West Bengal will continue to be rainy this week, indicating that Monsoon is just round the corner.
