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

An anvil is a cloud mostly composed of ice particles. Otherwise known as a cumulonimbus cloud, an anvil has reached the stratospheric...

A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...

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

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

A narrow band of strong winds in the upper atmosphere, typically flowing from west to east and influencing weather patterns.

Nor'easter is a meteorological event commonly observed in the Northeastern United States and typically occurs during the...

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

A weather watch means there is a risk of weather hazards in the near future, which could pose a threat to life/property....

A very cold high pressure that originates over the Arctic Ocean.