Kerala floods: What causes flash flooding and why has it been so severe in India?

Since June, at least 360 people died due to a serious flood in Kashgar. This is the most serious natural disaster that hit a state in southern India for decades.

After over 80 dams were flooded with heavy rain, more than 1 million people were banished from the evacuation center and recovered.

Even in the provinces of Uttar Pradesh, West Bengal, Maharashtra, Gujarat, Assam and Nagaland, they are drowning due to floods, deaths due to landslides, or death caused by streams. Disturb the earth

At the same time, sudden floods at Raganello Canyon in Calabria's Pollinino National Park killed eleven Italian hikers.

This phenomenon occurs when a sudden pouring event proves to be so heavy that it can not cope with the large amount of water exposed to it, and it happens when it becomes saturated before it has the opportunity to drain.

In lowlands, it is common for floods to be caused by heavy rain caused by thunderstorms in dry soil and not accustomed to absorption.

In urban areas, this means that there is plenty of water to flood the sewers, the street blowing out like a river, carrying the garbage, in extreme cases lifting the car and taking it away.

In many cases, the river flood is a very slow process. It penetrates into the ground with sufficient rainfall to wait for the water level to rise and overflow before reaching the sea level.

As far as Kerala Island is concerned, the weather is part of the four monsoon rains that hit the Indian subcontinent each summer.

Regional authorities have been accused of exacerbating the situation by gradually opening up dams that adorn the state's complex river networks, waiting for them to fill up, then releasing excess water.

Water resources expert Himanshu Thakkar told the BBC:

The Indian Central Water Commission was also attacked because it did not introduce an alarm system for flood prediction

Kerala lacks a flood forecasting system: Kerala is vulnerable to heavy rains and floods, but lacks an adequate flood forecasting system. The Central Water Commission (CWC), the only flood prediction institution in India, lacks information on flood conditions in Kerala. As local people have no room in advance for the situation, this makes the situation even worse. CWC has set up a flood monitoring site in the state, but some of it will not work. Excessive release of water from the dam: More than 20 dams released large amounts of water and exacerbated the situation when Kerala already dealt with serious floods. Why did not you free water before? What does the authorities do before the monsoon arrives in India?

The Department of the Interior said on Monday the large flood of Kerala State was declared a serious disaster. Given the intensity and intensity of floods and landslides in Kerala State, this is a serious disaster for every practical purpose, "says officials from the Ministry of Home Affairs. This classification will allow the country to gain more money and other aid from the center. The Army, Navy and the NDRF team continued their rescue activities. The South Commander said on Monday 1,500 soldiers were rescuing and that people were locked up on the roof and the area that can not be accessed with the help of a defense helicopter was hanged. Sony also emphasized the large logistics problem that the army faces in rescuing people and trying to rescue them.

Natural disasters in India are largely related to India's climate, so they greatly lose their lives and wealth. Droughts due to heavy rain, flash floods, hurricanes, avalanches, landslides, and snowstorms are the biggest threats. Natural disasters can be caused by earthquakes, floods, volcanic eruptions, landslides, hurricanes, etc. To be classified as a disaster, it will have extensive environmental impacts and / or human losses and often cause economic losses. Other dangers frequently include summer sandstorms, which are usually tracked from north to south; they cause extensive material damage in northern India and deposit large amounts of dust from dry areas . Hail is also common in some parts of India, causing severe damage to traditional crops such as rice and wheat and more crops.