There are several scientific theories on why this area saw double digits of rain in a four day stretch, one being the orographic effect. The orographic effect occurs when air masses are forced to ...

Orographic features—such as mountains and valleys—add another layer of complexity. These geographical characteristics can enhance rainfall through orographic lifting, leading to greater runoff ...

Orographic lifting, a process that occurs when hills or mountains force air to rise and cool, caused water vapor to condense and additional precipitation to form as it combined with Helene's ...