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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

The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....

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

Particles such as pollen, grass seeds, or dust in the air that cause allergies and are transported by winds.

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

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

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

The formation of ice crystals on surfaces when the temperature drops below freezing, typically overnight, causing potential...

Condensation is the process by which water vapor in the air cools and changes into liquid water. This process is crucial...

An elongated area of relatively low atmospheric pressure, often associated with unsettled weather conditions like storms...

Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.