Dark blue cloudy sky

What is Relative Humidity?

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

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Glossary

A weather front formed when a cold front overtakes a warm front, lifting the warm air off the ground and resulting in a mix...

The temperature at which air becomes saturated with moisture and water vapor begins to condense into liquid form, leading...

Meteorology is the scientific study of the atmosphere and weather processes. It involves observing, analyzing, and forecasting...

Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds...

The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...

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

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

A measurement determined by the wave lengths and sea conditions caused by the effect of wind, and by the movement of tree...

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 strong wind typically ranging from 34 to 40 knots (39 to 46 miles per hour) and often associated with rough seas and stormy...