What is the reason behind the devastating rainfall in Kenya?

The torrential rains and deadly floods that have hit Kenya since March have been some of the most catastrophic in the country in recent years. At least 169 people have died due to the heavy rains, with at least 91 missing, according to the latest government figures.

In the most tragic single event, at least 48 people were killed on Monday after water blew through a blocked river tunnel under a railway bridge in southwestern Kenya, causing a flash flood. The rain has displaced more than 190,000 people and damaged roads and other infrastructure.

The devastating rains are a result of a mix of factors, including the country’s seasonal weather patterns, human-caused climate change as well as natural weather phenomena.

Kenya and some other parts of eastern Africa have two main rainfall periods: the “long rains” season of March to May, and the “short rains” season of October to December. The “long rains” season is when most of the country’s average annual rainfall occurs and is often characterized by torrential rains.

The frequency, patterns, and intensity of rainfall in Kenya are influenced by naturally occurring climate systems like the Indian Ocean Dipole. The positive phase of the Indian Ocean Dipole causes heavy rainfall in areas west of the Indian Ocean, such as Kenya.

The Kenya Meteorological Department expects the “long rains” season to continue into June, with heavy downpours likely to occur in several regions. The department also warns of flooding in low-lying areas and landslides in steep slopes.

Overall, the ongoing floods in Kenya are likely a result of the positive Indian Ocean Dipole and climate change, leading to intense rainfall and devastating consequences for the country.