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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

A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...

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

A closed low, also known as a cut-off low, is a low-pressure system that is entirely isolated from the main atmospheric circulation...

The occurrence of storms resulting from the horizontal advection of cold air at high levels or the horizontal advection of...

A towering cloud that often reaches great altitudes and is associated with thunderstorms, heavy rain, and sometimes severe...

The temperature at which air becomes saturated with moisture and water vapor begins to condense into liquid form, leading...

A periodic warming of sea surface temperatures in the central and eastern Pacific Ocean, significantly influencing global...

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

Temperature scale, abbreviated as °C, found by accepting the freezing point of water at one atmospheric pressure as zero...

Convection is the vertical movement of air caused by temperature differences, where warm air rises and cool air sinks. It...