What is Air Mass?

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

A weather system refers to the movement of warm and cold air across the globe, usually in a recurring pattern. Systems can...

A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...

A periodic cooling of sea surface temperatures in the central and eastern Pacific Ocean, often leading to altered global...

The names given to the winds blowing from the four cardinal directions (north, east, south, and west - N, E, S, W) on a compass.

The occurrence of storms resulting from the horizontal advection of cold air at high levels or the horizontal advection of...

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

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

An instrument for measuring atmospheric pressure.

A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...