India Meteorological Department (IMD) is expecting a ‘slight' increase in rainfall activity over interior south peninsular India from the weekend.
Scattered rain or thundershowers have also been forecast central India, which, along with peninsular interior, has been under the grip of lean phase over the past week or so.
HEAVY IN EAST
This is even as parts of northwest India, east India and the west coast would continue to witness fairly widespread rain or thundershowers.
Global models had earlier suggested that the monsoon may come out of the weak phase after a surplus run during most of June.
This, according to the European Centre for Medium-Range Weather Forecasts, would materialise in tandem with the heavy rain activity over east and northeast India lifting expectedly by Monday.
The rains have been triggered by a low-pressure area that sprung up over Uttar Pradesh a couple of days ago boosting the southeasterly flows from the Bay of Bengal.
A weather warning valid for the next two days said that isolated heavy to very heavy rainfall would occur over Uttar Pradesh, Bihar, sub-Himalayan West Bengal and Sikkim, Assam and Meghalaya.
HEAVIER TO EAST
It would be heavy over Nagaland, Manipur, Mizoram, Tripura and Arunachal Pradesh.
The 24 hours ending Thursday morning saw widespread rainfall being reported from Uttar Pradesh, Madhya Pradesh, Himachal Pradesh, Uttarakhand and the Northeastern States.
It was fairly widespread over Jharkhand, West Bengal, Sikkim, Jammu and Kashmir, east Rajasthan, Haryana and Delhi.
Scattered rainfall fell over Punjab, Chhattisgarh, Orissa, Maharashtra, Kerala and Karnataka and isolated over Gujarat, West Rajasthan and Andhra Pradesh.
SHIFT OF ‘PATCHES'
The Climate Prediction Centre of the US National Weather Services said in its outlook that ‘patches of weak precipitation' would settle across north and east India and to the equatorial Indian Ocean to the south of the peninsula.
Meanwhile, on Thursday, the seasonal trough at mean sea level passed through Amritsar, Karnal, Meerut, the centre of the low pressure area, Patna, Dhanbad and thence east-southeastwards to northeast Bay of Bengal.
WEEK FORMATIONS
Towards the northwest, the feeble western disturbance persisted over north Pakistan and adjoining Jammu and Kashmir.
This provided a setting for southeasterly monsoon winds to set up a rendezvous with northwesterlies associated with the trough precipitating rains
