A timelapse video shows a stunning shelf cloud moving across the sky in southern Brazil. The dramatic footage was filmed in Caxias do Sul. About ten million people face water rationing as severe ...

As Des Moines was hit with strong thunderstorms Tuesday, pictures of a "shelf cloud" start circulating social media. The images displayed what looked like low hanging clouds under more cloud ...

Mr Hayes said the phenomena — known as arcus or shelf clouds — was a sign to check your weather app for any active warnings. While the clouds weren't necessarily a cause for concern ...