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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

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

Air laden with sand and dust, common in areas devoid of permanent vegetation, especially deserts.

A drainage wind that flows downhill due to gravity, often associated with cold air descending from elevated regions.

A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...

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

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

The situation where there is no advection because the constant pressure surfaces and temperature surfaces in the atmosphere...

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

The formation of fog when warm and moist air passes over a cool or cold surface or, conversely, when cold air passes over...

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