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

A strong wind typically ranging from 34 to 40 knots (39 to 46 miles per hour) and often associated with rough seas and stormy...

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

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

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

A periodic warming of sea surface temperatures in the central and eastern Pacific Ocean, significantly influencing global...

Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.

A low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...

A rapidly rotating column of air extending from a thunderstorm to the ground, capable of causing significant damage.

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

An instrument that continuously records atmospheric pressure over time. It uses a barometer to measure pressure and creates...