What is Arctic Air?

A towering cloud that often reaches great altitudes and is associated with thunderstorms, heavy rain, and sometimes severe...

A condition in which the stratification of the atmosphere depends on both air temperature and pressure, and where surfaces...

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

The term used for semi-stationary high-pressure centers such as the Azores and North Pacific Highs, which occur in the narrow...

The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.

A tropical cyclone, also called a hurricane, is a severe tropical storm with wind speeds in excess of 74 mph. Known as a...

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

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

Weather conditions are the components that comprise the state of the atmosphere. The six main weather conditions are temperature,...

Bright and dark rays with changing colors and contrast in the sky. These rays become visible due to the reflection of atmospheric...