What is Arctic Air?

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

A closed low, also known as a cut-off low, is a low-pressure system that is entirely isolated from the main atmospheric circulation...

The lowest level of a given cloud or cloud layer in the atmosphere, relative to the observer's position above the ground.

A cold core high is a high-pressure system with cold air at its center. These systems are typically associated with clear...

Frozen drizzle is a dangerous type of frozen rain. It’s a light rain that falls in very fine drops, which freezes on contact...

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

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

The heating of the Earth by the sun causes daily changes in both the direction and speed of the wind. During the day, ground...

A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...