Scientists say that as the world has warmed by 0.7C, the atmosphere is able to hold 4% more moisture, which means more potential rain.

BBC: Extreme rainfall in UK 'increasing'

"Because the lake is generally warm and has a lot of moisture, we find that it generates this very big, what we call, convective potential energy, which generates a lot of cloudness and this unique nature of weather characterized by heavy thunderstorms which sometimes can be dangerous, " he explains.

CNN: Lethal weather on 'world's most dangerous lake'