Explainer: What is a cloudburst?

Uneeba Zameer Shah
July 28, 2021

Islamabad has received 103mm rain in one-and-a-half-hour, so we cannot term it as cloudburst, says PMD director

Light and intermittent rains come as a blessing for people, but when an area receives heavy rains in the absence of a proper drainage system, it wreaks havoc and causes damage to infrastructure and takes lives with it due to the ensuing floods. A sudden, heavy downpour of this nature is called a cloudburst.

When Geo News approached Director Pakistan Meteorological Department (PMD) Sardar Sarfaraz and inquired whether cloudburst occurs due to a mixture of cold and hot winds, he said: "It depends in which areas is it raining. The topography of Islamabad and Northern areas is such that hot and cold winds meet there."

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The PMD director said we can see regular lightning occurring in these areas as winds are moving up and down simultaneously.

However, Islamabad has received 103mm rain in one-and-a-half-hour, so we cannot term it a cloudburst, Sarfaraz said.

"Cloudburst had occurred in Islamabad back in July 2001 when the capital had received 600-650mm rain within in a span of 8-10 hours. Now, when such a phenomenon occurs, we can term it as a cloudburst."


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