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

Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.

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

A large, organized thunderstorm with a rotating updraft, often producing severe weather such as tornadoes, hail, and heavy...

Weather intelligence is technology that provides predictive and actionable insights, allowing businesses to adapt to weather-related...

A tropical cyclone with sustained winds of at least 74 miles per hour, characterized by a central eye, strong winds, and...

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

The reflectance rate of a surface, indicating the amount of electromagnetic radiation reflected from the surface. It depends...

A cloud of irregular appearance, composed of irregular cloud fragments.

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

A large body of air having similar horizontal temperature and moisture characteristics.