There was, however, no relief from traffic chaos. Roads in large parts of the city were already waterlogged by the time people set out for work, leading to bottlenecks and snarls for commuters. that frustrated commuters.
Arriving 16 days after its normal date, this was Delhi’s most delayed monsoon onset since 2002, when the rain-bearing wind system had entered the capital on July 19. The IMD said the monsoon had covered not just Delhi-NCR but also the remaining parts of the country on Tuesday.
Between 7am and 8.30am, Safdarjung – Delhi’s base weather station – received 24.8mm of rainfall. It recorded another 28.1mm in the next nine hours, providing much-needed precipitation to the capital, which was in the “large deficient” rainfall category till Tuesday morning.
Met officials say more rain is expected on Wednesday, with light to moderate showers expected during the day. Conditions will remain ideal for rain throughout the week, the officials added.
“Conditions were favourable for monsoon’s arrival for the last 48 hours. On Tuesday, Delhi finally recorded rainfall. The monsoon has now covered the entire country. Similar rainfall activity is expected on Wednesday, while Thursday and Friday might see isolated drizzles across the city,” said a met official, adding that moderate rainfall was recorded across Delhi during both spells of rain.
The IMD classifies rainfall as “light” when it is between 2.5 and 15.5mm, as “moderate” when is it between 15.6 and 64.4mm, while it is classified as “heavy” when it exceeds 64.5mm in a single day. Lodhi road received the most rainfall on Tuesday, recording 19.4mm of rainfall till 8.30am and another 37.8mm in the next nine hours. Palam too recorded “moderate” rainfall, receiving 24.4mm till 8.30am, followed by a spell of 8.2mm in the next nine hours.
Delhi had a maximum temperature of only 30.9 degrees Celsius during the day, which is five degrees below normal. The Ridge station recorded the lowest maximum, at just 29.5 degrees Celsius. The IMD forecasts the maximum to hover around 33 degrees Celsius on Wednesday as well, with more rain expected to regulate the temperature and keep it below normal.
Till Tuesday, IMD data showed Delhi as a whole had only received 48.9mm of rainfall between June 1 and July 13, as opposed to a normal mark of 140.1mm, making it a deficit of 65%. At Safdarjung, the rain tally during this period was 67.6mm. However, Tuesday’s downpour and another spell on Wednesday is expected to bridge the gap somewhat.
IMD data in the last six decades shows that the longest wait for the monsoon to enter Delhi was in 1987, when it reached the capital on July 27, almost a whole month after its normal date. For the last two-three years, the normal date for the monsoon to reach Delhi is June 27. Earlier, the date was June 29.
Power cuts were also reported in areas such as Vasant Kunj, Harsh Vihar, Sagarpur, Mahavir Enclave, Badarpur, Karawal Nagar and Lajpat Nagar during the day, however discoms said the impact was temporary.
After Tuesday’s rain spell, Delhi’s overall Air Quality Index (AQI) was recorded at 80, according to the Central Pollution Control Board (CPCB). Experts say it should improve even further in the next 24 hours, with the rain washing away localised pollutants.
Watch Finally! Monsoon arrives in Delhi, so does waterlogging