Delhi downpour not due to a cloudburst but was close to one: IMD

The Palam station reported a total of 106.6 mm of rainfall out of which 75.4 mm was between 2.30 and 5.30 am and 13.6 mm was between 5.30 and 8.30 am. Both stations recorded more than half the day’s rainfall in just three hours.

IMD chief Mrutyunjay Mohapatra said, “These do not warrant to be declared as cloudbursts, but it was very close to a cloudburst.”

The IMD defines a cloudburst as an extreme amount of precipitation in a short period (rainfall of 100 mm or more in an hour) which is rare as it occurs mainly because of orographic lift. In simple words, it refers to situations when moist air ascends over elevated terrain resulting in sudden condensation and precipitation.

Mohapatra also referred to observations at the Lodhi Road station as well as it logged 64 mm of rainfall between 5 am and 6 am and 89 mm between 6 am and 7 am.

In its statement, the IMD also said the impact of the heatwave was very high in the second half of May and in June. There were 10 to 18 above-normal heatwave days observed across Northwest India, including Delhi-NCR, and adjoining Central and East India.

The Southwest monsoon advanced entirely into Delhi on June 28. Regarding the active monsoon conditions, IMD officials said it will likely persist over Northwest India during the next four-five days.

There has been no significant rainfall observed in the Capital since last week, except for scattered showers in a few places, as per the weather bulletin.

The city remains on orange alert for Tuesday and Wednesday.

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