The year 2021 commenced with severe cold wave conditions across northern plains. Delhi recorded 1.1 degrees minimum temperature, lowest of the season. On January 1st, minimums in Hisar and Churu dropped below the freezing point. The minimum recorded for Hisar was -1.2 degrees and Churu -0.2 degrees. Narnaul was freezing at 0.2 degrees.
By January 3rd, cold wave conditions disappeared from north-west Plains due to the approach of Western Disturbance and formation of an induced cyclonic circulation over Rajasthan. The Western Disturbance is preceded by a warm front, moreover, winds also change direction from north-west to east southeast leading to an increase in night temperatures. Minimum of Delhi increased to 9.9 on 3rd January and on January 7, it is 14.4 degree.
Another feeble Western disturbance is expected over Western Himalayas which will linger around for the next 48 hours. Therefore, the icy cold northwesterly winds will not continue for long and temperatures will not witness a significant drop. We expect temperatures across Northern Plains and western parts of the country to drop by January 10th. The next Western Disturbance will be around January 20th or 21st. Whenever there is a significant gap between to Western disturbances, cold and dry winds from north-west gets set in, leading to drop to in temperatures. That's why north-west India will not witness chilling cold until January 10 or 11. Temperatures will fall over north-west India but it will not be a steep drop. Chance of cold wave or severe cold wave to make a comeback seems to be slim.
