write a forward on kerala flood2018 project
Answers
Cause
The Indian state of Kerala receives some of India’s highest rainfall during the monsoon season. However, during 2018 the state experienced its highest level of monsoon rainfall in decades. According to the India Meteorological Department (IMD), there was 2346.3 mm of rainfall, instead of the average 1649.55 mm.
Kerala received over two and a half times more rainfall over the average for August. Between August 1 and 19, the state received 758.6 mm of rainfall, compared to the average of 287.6 mm, or 164% more. This was 42% more than during the entire monsoon season.
The unprecedented rainfall was caused by a spell of low pressure over the region. There was a perfect confluence of the southwest monsoon wind system and the two low-pressure systems that formed over the Bay of Bengal and Odisha. The low-pressure regions pull in the moist south-west monsoon winds, increasing their speed, as they then hit the Western Ghats, travel skywards, and form rain-bearing clouds.
Kerala has 41 rivers flowing into the Arabian Sea, and 80 of its dams were opened after being overwhelmed. Water treatment plants were submerged and motors were damaged.