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

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

A type of low-altitude cloud that forms in uniform layers, often covering the entire sky and producing overcast conditions.

A weather front formed when a cold front overtakes a warm front, lifting the warm air off the ground and resulting in a mix...

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

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

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

A line of severe thunderstorms that can form along or ahead of a cold front, often producing strong winds and heavy rain.

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

Occurs when centers of high pressure and/or low pressure set up over a region in such a way that they prevent other weather...

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