What is Relative Humidity?

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

Ice forms on the surface of highways in a very thin layer that is difficult to distinguish from the color of the asphalt...

A low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...

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 mass of very cold, dry air that mostly originates over the Arctic Ocean.

In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...

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

The jet stream forming the boundary between tropical air and sub-tropical air, characterized by isothermal compression and...

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

The state of the atmosphere when it contains the maximum amount of water vapor possible at a given temperature and pressure.