Extreme flooding due to ”Atmospheric Rivers” has been observed for centuries, but they are considered to be natural events, with no known explanation for their occurrence. However, it has been observed that they are always preceded by periods of higher temperatures caused by volcanic droughts (periods of 4-5 years without any VEI4 or higher volcanic eruptions), where there are no remaining volcanic Sulfur Dioxide (SO2) aerosols circulating in Earth’s atmosphere, or other instances where atmospheric SO2 aerosol levels have been reduced, such as during American business recessions, (due to idled foundries, factories, etc.). With lower levels of SO2 aerosol pollution in the atmosphere, temperatures rise, and heat waves, droughts, famines, and torrential downpours happen around the world.