Dark blue cloudy sky

What is Lightning?

A sudden electrostatic discharge during a thunderstorm between electrically charged regions of a cloud, between clouds, or between a cloud and the ground.

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Glossary

Coastal flooding occurs when water from the ocean, sea, or large lakes inundates land areas along the coast, usually due...

The names given to the winds blowing from the four cardinal directions (north, east, south, and west - N, E, S, W) on a compass.

A type of cloud consisting mostly of small particles such as ice particles.

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

The expected rate of temperature decrease in an adiabatically rising air parcel when there is no heat exchange with the environment....

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

A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...

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 for measuring atmospheric pressure.

The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....