Dark blue cloudy sky

What is Precipitation?

Any form of water - liquid or solid - that falls from the atmosphere to the Earth's surface, including rain, snow, sleet, and hail.

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Glossary

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

Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....

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

A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...

An instrument used to measure the speed, force, and sometimes the direction of the wind. It can be cup or pressure tube anemometers....

An instrument for measuring atmospheric pressure.

The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.

The lowest level of a given cloud or cloud layer in the atmosphere, relative to the observer's position above the ground.

A condition in which the stratification of the atmosphere depends on both air temperature and pressure, and where surfaces...

A type of low-altitude cloud that forms in uniform layers, often covering the entire sky and producing overcast conditions.