An India Meteorological Department (IMD) until Monday has said that the regime of fairly widespread rain or snowfall would revisit the western Himalayan region as a fresh ‘active' western disturbance set in over the region.
Going forward, the European Centre for Medium Range Weather Forecasts sees even heavier weather being triggered over the northwest around February 20.
SYSTEM TO WATCH
This is a system to watch since it is shown as sparking widespread rain or thundershowers not just over northwest but also over practically the whole east of the country, the eastern coast and southern peninsular India.
This is likely to unfold as a weather system from the Bay of Bengal interacts with the western disturbance as it heads into the east of the country during February 18 to 25, according to an outlook by the US National Centres for Environmental Prediction.
Meanwhile, an IMD outlook on Wednesday evening saw the possibility of rain or thundershowers over the plains of northwest after the incoming ‘active' western disturbance impacts the hills during this weekend.
DROPS ANCHOR
An intervening feeble western disturbance has already dropped anchor over central Pakistan and adjoining Punjab on its way across the border into northwest India.
In the south, an easterly wave activity was apace, and would continue to be active for another three days, the IMD said.
Minimum temperatures have fallen by 2-4 degree Celsius over most parts of Uttar Pradesh and Gujarat and isolated pockets of Rajasthan, Haryana and north Madhya Pradesh.
This came about in the wake of a predecessor ‘active' westerly system having exited the region, letting cooler northwesterlies into the region.
ACTIVE IN EAST
This westerly system has since become active over the east of the country, raising mercury by 2-4 degree Celsius over most parts of Bihar, Madhya Pradesh, Jharkhand, West Bengal and the Northeastern States, the IMD said.
The lowest minimum temperature of 4.0 degree Celsius was recorded at Adampur (Punjab) in plains of the country on Tuesday.
Minimum temperatures are expected to fall by 1 to 2 deg Celsius over the plains of northwest India and by 2 to 3 deg Celsius C over central and adjoining east India during next two days.
Maximum temperatures would fall by 2-3 degree Celsius over east and adjoining central India during next two days.
OVERNIGHT RAIN
Isolated rainfall or snowfall has occurred over western Himalayan region, Arunachal Pradesh and Assam during the 24 hours ending Wednesday morning.