What is Air Mass?

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

A cloud that develops from Cirrus, completely or partially covering the sky, creating a halo effect, thin, sheet-like, milky...

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

The horizontal transport of any feature within the atmosphere due to the movement of air (wind). This includes phenomena...

Nimbostratus clouds are thick, dark, gray clouds associated with rainy and gloomy days that block the Sun. These clouds,...

An image on the weather radar that is convex to the direction of movement and resembles an arc shape, caused by mesoscale...

Cloud condensation nuclei are tiny particles in the atmosphere, such as dust, salt, or pollutants, that provide surfaces...

A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...

A sudden electrostatic discharge during a thunderstorm between electrically charged regions of a cloud, between clouds, or...

Confluence refers to the area where two or more air streams or bodies of water meet and combine. In meteorology, it often...