Delhiites woke up to a sweltering day with high humidity to keep them company. However, the day took a pleasant turn around 5 in the evening as dark clouds covered the sky and a sudden squall soon gave way to a thundershower.
"The minimum temperature in the morning was 30.3 degrees Celsius, two notches above average for this time of the year. We had forecast a clear day and the maximum temperature to be around 44 degrees. However, in the afternoon as the humidity rose significantly from 69% to 92%, it falsified all forecasts," a Met department official said.
The official said when humidity and temperature rise significantly, it leads to thundery development and downpour due to the presence of lots of moisture.
The rainfall was recorded at 14.6mm and the temperature dropped to 25.7 degrees, which is two degrees below normal for this time of the year.
"At 4.30pm, the temperature was 43.2 degrees, which is three degrees above normal, and it suddenly dropped by nearly 18 degrees due to the thunderstorm," the official added.
The weatherman has predicted a partly cloudy sky with the possibility of light rain and storm in some areas for Friday.
The maximum and minimum temperatures are expected to be around 41 and 29 degrees, respectively.
In south Delhi, some traffic signals stopped functioning due to the rain. This led to the traffic police manually managing traffic at some junctions, which slowed down traffic movement.
The squall also affected flight movement. More than 24 flights had to be diverted and several others were delayed.
Storm uproots many trees
There were reports of trees falling prey to the thunderstorm.
A number of such incidents were reported from Dwarka, Model Town II, Ashok Vihar I, Bharat Nagar, Sultanpuri, Rohini Sector 15, Shalimar Bagh, Nangloi, Mukherjee Nagar, Jhandewalan, Paschim Vihar, Ashok Vihar, North Moti Bagh, Siri Fort and Ganesh Nagar.