What is a Cloudburst? – BusinessTimes

A cloudburst is one of the most intense natural weather events, where a huge amount of rainfall occurs in a very short period, usually within an hour. Unlike normal showers, this sudden downpour often leads to flash floods, landslides, and major destruction, especially in mountainous terrains.

🌩️ Why Do Cloudbursts Happen Mostly in Mountain Regions?

Cloudbursts are most common in hilly and Himalayan areas because:

• Moist air masses get trapped against high mountains and rise quickly.

• As they ascend, they cool rapidly, causing sudden condensation.

• When these water-laden clouds are unable to move forward, they release rain violently over a small area.

👉 This is why states like Uttarakhand, Himachal Pradesh, Jammu & Kashmir, and Arunachal Pradesh frequently experience such events.

Causes of Cloudbursts

Several factors contribute to this extreme rainfall:

1. Orographic effect – Moist winds rise over mountains and cool suddenly.

2. Cumulonimbus clouds – Tall thunderclouds store massive water and burst.

3. Temperature variations – Hot air currents meet cold air, triggering rapid condensation.

4. Excess humidity – Monsoon moisture and local evaporation increase cloud instability.

5. Climate change factor – Rising greenhouse gases make the atmosphere hotter, allowing air to hold more moisture, which increases the intensity of sudden rain events.

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🌦️ Cloudburst vs Normal Rainfall

Major Cloudburst Incidents in India

• Kedarnath (2013) – One of the deadliest, triggering flash floods and landslides that killed thousands of pilgrims.

• Leh, Ladakh (2010) – Over 200 people lost their lives due to sudden torrential rains.

• Uttarkashi (2012 & 2021) – Heavy losses to life and property.

• Amarnath Yatra area (2022) – A Cloudburst near the holy cave killed more than a dozen devotees.

• Kishtwar, J&K (2025): A massive cloudburst in Chasoti village killed over 60 people, with many still missing.

• Uttarkashi & Dharali, Uttarakhand (2025): Cloudbursts triggered flash floods that destroyed homes, hotels, and left several dead and missing.

• Kullu, Himachal Pradesh (2025): Cloudburst-induced floods swept away vehicles, shops, and livestock, causing significant damage.

🛡️ Safety Guide: What To Do Before, During & After a Cloudburst Before

• Stay updated with weather alerts and avoid risky travel during the monsoon.

• Identify safe shelters in advance.

• Keep an emergency kit (torch, medicines, dry food, important documents).

During

• Move immediately to higher and safer ground.

• Avoid rivers, streams, and landslide-prone slopes.

• Do not attempt to cross waterlogged roads.

After

• Listen to official advisories before returning home.

• Watch out for landslides or damaged buildings.

• Offer help to affected neighbors and report missing persons.

Frequently Asked Questions (FAQs)

Q1. Can cloudbursts be prevented?
➡️ No, but their impact can be minimized by early warning systems, safe urban planning, and afforestation.

Q2. What is the biggest cloudburst in the world?
➡️ The 1970 Soviet Union cloudburst in Central Asia is often cited as one of the most devastating, leading to massive flash floods.

Q3. When did the Kedarnath cloudburst occur?
➡️ It happened in June 2013, causing catastrophic floods that destroyed Kedarnath town and nearby villages.

Q4. Can cloudbursts be predicted?
➡️ They are very difficult to predict precisely, but Doppler radars and advanced weather satellites can give short-term warnings in vulnerable zones.

Q5. Are greenhouse gases linked to cloudbursts?
➡️ Yes, rising global warming increases the moisture-holding capacity of air, making intense events like cloudbursts more frequent.

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