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

Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...

A small, intense downdraft that produces damaging winds at the surface, typically lasting a few minutes and often associated...

A cloud of irregular appearance, composed of irregular cloud fragments.

The branch of science dealing with the laws of motion of air or other gases.

A long, narrow region in the atmosphere that transport water vapor, like a river in the sky.

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

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

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

A strong, downward wind caused by a localized column of air sinking rapidly, often resulting in damage similar to that caused...

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