Rare clouds could be seen from parts of the Highlands on Saturday afternoon. Called Kelvin Helmholtz, they resemble rolling ocean waves and similar patterns have been seen by astronomers on ...

Kelvin-Helmholtz instability creates beautiful wave-like cloud patterns in the sky, or billow clouds. Different layers of the atmosphere can have different densities with air moving at different ...

I saw this cloud formation this afternoon in Calgary looking to the west. It's a first for me." Anne Wilkie posted on X. What she saw was a Kelvin-Helmholtz wave cloud, named after Hermann von ...

This causes the cloud to take on the shape of rolling waves. Called Kelvin Helmholtz clouds, or just wave clouds, these clouds are a sign of turbulence in the air. The cloud’s name comes from ...