What is Air Mass?

An anvil is a cloud mostly composed of ice particles. Otherwise known as a cumulonimbus cloud, an anvil has reached the stratospheric...

A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.

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

A weather front where two air masses meet but neither is strong enough to move the other, often resulting in prolonged periods...

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

A thin, white cloud layer that is intertwined or separate, arranged in regular order, and does not cast a shadow.

Thermodynamic changes occurring within a system without any exchange of heat with the surroundings. In the atmosphere, changes...

A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...

The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.

Although it is also used for light winds, it is the general name given to the daily cyclical winds that occur mostly between...