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

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

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

A weather front where two air masses meet but neither is strong enough to move the other, often resulting in prolonged periods...

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

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

Ball lightning appears during thunderstorms, taking the shape of glowing, electric orbs in the sky. It can appear in a variety...

A drainage wind that flows downhill due to gravity, often associated with cold air descending from elevated regions.

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

A very cold high pressure that originates over the Arctic Ocean.

A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...