Rain, snowfall bring in cold in north India: What is the reason behind it?

The wettest January in Delhi for 27 years, the lowest daytime temperature so far this season and the cleanest air in over 80 days – a host of weather records tumbled in the national capital on a cold, wet, overcast Sunday.
People in Delhi walk under umbrellas amid rainfall on Sunday.(ANI Photo)
People in Delhi walk under umbrellas amid rainfall on Sunday.(ANI Photo)
Published on Jan 10, 2022 09:03 AM IST
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By | Written by Amit Chaturvedi, Hindustan Times, New Delhi

The entire north India has been reeling under severe cold wave conditions, with mercury plunging to sub-zero levels in upper reaches of the Himalayas. Heavy rainfall has made the matters worse, bringing the day chill across the region.

The India Meteorological Department (IMD) has warned that widespread rain and snowfall is likely to continue today.

Also Read | These 4 states will see heavy rainfall from Jan 11

The IMD has predicted a fall of 3-5 degrees Celsius drop in minimum temperature over northwest India. The states and regions which will see a drop in minimum temperature are: Delhi, Punjab, Haryana, Chandigarh, Rajasthan and Madhya Pradesh.

Why is this happening?

IMD scientists said that two western disturbances are behind the wet spell over north India, which has given the region a steady chill. "There were two WDs in close succession which caused an extended wet spell over northwest India. The impact was higher because of moisture incursion from Arabian Sea. Over Central India, we are expecting confluence of winds from Arabian Sea and Bay of Bengal so there can be widespread and heavy rain over Madhya Pradesh. As the WD moves away, very cold northerly winds blowing from snowclad Himalayas are going to bring down minimum temperatures over northwest India," said M Mohapatra, the director general of IMD.

More snow on cards for the hills

The western Himalayan region is very likely to experience scattered to fairly widespread rainfall and/or snowfall till January 10, the IMD has said in its forecast. Parts of Himachal Pradesh, which have been seeing snowfall the past few days, may see more heavy snow or rain in the coming days, it further said.

Meanwhile, heavy rain lashed Delhi on Sunday, which led the minimum temperature to settle at 13.8 degrees Celsius, seven notches above normal.

Also Read | Delhi’s AQI remains in ‘satisfactory’ category

The weather department said the city received 8 mm rainfall in the last 24 hours as recorded at 8.30am, while the relative humidity recorded at 5.30pm was 95 per cent.

On Saturday, Delhi recorded its highest rainfall in a day for January in 22 years, yielding the city's best air quality in over two months even as the minimum temperature settled at 15 degrees Celsius, eight notches above normal.

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