Delhi had recorded the lowest minimum of the season that is 10.5°C (4 degrees below normal) on November 8. Since, then the temperatures have been increasing. Moreover, at present minimum temperatures are above normal by 3 degrees, although maximums are below normal. In fact, the minimum temperatures have increased in Delhi by a total of 7 degrees in the last 7 days.
Reason for the soaring minimum temperatures can be attributed to the approaching successive Western Disturbances due to which warm and humid winds from east and southeast direction, have been blowing over Delhi-NCR. Moreover, these winds were very light and thus provided no help in decreasing the already prevailing soaring pollution levels.
On November 13 and 14, the entire Delhi-NCR received scattered rains. The reason for these rains can be attributed to the formation of induced Cyclonic Circulation over North Rajasthan. During this, Safdarjung Observatory in Delhi recorded 7 mm rain which was the highest rainfall (in 24-hours span) received by Delhi since 2010 in the month of November.
Now, the induced Cyclonic circulation will fade away, therefore the weather will clear up. Due to recent rains, pollution has already decreased over Delhi region. We expect North-westerly cold winds from Jammu-Kashmir and Himachal Pradesh to commence from tomorrow which will help in reducing minimums by 3°C to 5°C during the next 2-3 days. This fall in temperature will mark the commencement of Winter season over Delhi.
Image Credits – The Indian Express
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