In the aftermath of the devastating landslide in Wayanad, experts warn of similar tragedies in the region due to extreme rainfall and a low-pressure trough. The northern districts of Kozhikode, Wayanad, Kannur, and Kasargod received heavy rainfall, leading to the tragedy. Prone to landslips, areas like Mundakkai and Churalmala were hit the hardest, with studies finding that dense clouds over the Arabian Sea can cause landslides. A mini cloud burst in Misos Scale has resulted in 15-20 centimetres of rain in just 2-3 hours, further exacerbating the situation.
Cloud Bursts: A Threat to Wayanad and Beyond
Introduction
The recent landslide tragedy in Wayanad, Kerala, has brought to light the devastating potential of cloud bursts. This phenomenon, characterized by intense rainfall within a short period, can trigger landslides, flash floods, and other catastrophic events.
Background
Cloud bursts occur when a large volume of water vapor condenses rapidly in the atmosphere, forming thick clouds. These clouds contain numerous water droplets that can grow heavy enough to overcome the force of gravity and fall as rain. In extreme cases, cloud bursts can release several inches of rain within a matter of hours.
The Western Ghats, a mountain range that runs along the western coast of India, is particularly prone to cloud bursts. The moist air from the Arabian Sea rises rapidly as it encounters the mountains, leading to rapid cloud formation and condensation.
Wayanad Landslide
On August 8, 2022, a cloud burst in Wayanad district led to a massive landslide that killed at least 18 people. The landslide hit the villages of Mundakkai and Churalmala, which are located in a region known for its history of landslides.
Studies have shown that the dense cloud cover over the Arabian Sea can contribute to landslides in the Western Ghats. The clouds trap rainfall, preventing it from evaporating. As a result, the ground becomes saturated, increasing the risk of landslides.
Other Affected Regions
In addition to Wayanad, other districts in Kerala have also been affected by cloud bursts in recent years. In 2018, a cloud burst in Idukki district caused widespread flooding and landslides, displacing thousands of people.
Top 5 FAQs
1. What is a cloud burst? A cloud burst is a sudden and intense rainfall that can release several inches of rain within a short period.
2. What causes cloud bursts? Cloud bursts occur when a large volume of water vapor condenses rapidly in the atmosphere, leading to the formation of thick clouds that release heavy rainfall.
3. What areas are most prone to cloud bursts? Areas with high humidity and mountainous terrain, such as the Western Ghats in India, are particularly prone to cloud bursts.
4. How can cloud bursts be prevented? While it is difficult to prevent cloud bursts from occurring, early warning systems and disaster preparedness measures can help mitigate their impact.
5. What are the long-term effects of cloud bursts? Cloud bursts can have devastating long-term effects, including landslides, flooding, and damage to infrastructure. They can also cause erosion, loss of vegetation, and displacement of communities.
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