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

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

A cold core low is a low-pressure system where the coldest temperatures are found near the center. These systems are often...

The formation of ice crystals on surfaces when the temperature drops below freezing, typically overnight, causing potential...

The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.

Bright and dark rays with changing colors and contrast in the sky. These rays become visible due to the reflection of atmospheric...

Particles such as pollen, grass seeds, or dust in the air that cause allergies and are transported by winds.

The horizontal transport of any feature within the atmosphere due to the movement of air (wind). This includes phenomena...

The amount of radiation, heat, or light passing through or flowing from a unit area of a surface.

A term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...

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