Dark blue cloudy sky

What is Cumulus?

Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds under the right conditions.

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Glossary

Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...

A small, intense downdraft that produces damaging winds at the surface, typically lasting a few minutes and often associated...

A deviation from the normal or expected value in atmospheric or climatic conditions, often used in meteorology to identify...

Anticyclones are areas of high atmospheric pressure that bring hot, dry weather in the summer and cold fronts in the winter.

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

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

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

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

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

The term used for turbulence occurring in the absence of clouds or cloud-like elements in the visible area. It is often observed...