By Chris Spears
DENVER (CBS4) – It’s one of the many beautiful sights associated with rapidly changing weather, and when you see it, you better grab the camera fast.
That’s because a pileus cloud, or cap cloud, doesn’t last long and it changes shape fast due to the chaotic air below.
Pileus clouds are nature’s subtle way of saying a thunderstorm is growing at a rapid pace.
These clouds are made mostly of ice and form as air is forced up inside a building thunderstorm. They take on a smooth shape similar to a lenticular cloud.
The pileus cloud paves the way for a thunderstorm to grow taller and stronger, potentially, producing heavy rain and large hail.