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 line of severe thunderstorms that can form along or ahead of a cold front, often producing strong winds and heavy rain.

Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.

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

Perhaps you have come across them, maybe you are seeing them for the first time. These clouds, known as wave clouds, resemble...

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

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

The large-scale movement of air that distributes heat and moisture around the Earth, influencing weather patterns and climatic...

A deviation from the normal or expected value in atmospheric or climatic conditions, often used in meteorology to identify...

A fixed potential temperature line on adiabats, or the process of thermodynamic changes within a system without any exchange...

A sudden electrostatic discharge during a thunderstorm between electrically charged regions of a cloud, between clouds, or...