What is Cirriform?

The mass of air surrounding the earth and bound to it more or less permanently by the earth's gravitational attraction.

Snow that rises to 8 feet or higher.

A type of cloud consisting mostly of small particles such as ice particles.

A type of low-altitude cloud that forms in uniform layers, often covering the entire sky and producing overcast conditions.

In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...

Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.

The branch of science dealing with the laws of motion of air or other gases.

A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...

A term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...

Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....