Dark blue cloudy sky

What is Cumulonimbus?

A towering cloud that often reaches great altitudes and is associated with thunderstorms, heavy rain, and sometimes severe weather like hail or tornadoes.

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Glossary

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

The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...

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

The expected rate of temperature decrease in an adiabatically rising air parcel when there is no heat exchange with the environment....

A measure of how hot it feels when relative humidity is combined with the actual air temperature, often referred to as the...

Nor'easter is a meteorological event commonly observed in the Northeastern United States and typically occurs during the...

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

The branch of science dealing with the laws of motion of air or other gases.

Condensation pressure deficit refers to the difference between the actual vapor pressure and the saturation vapor pressure...

The jet stream forming the boundary between tropical air and sub-tropical air, characterized by isothermal compression and...