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

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

A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...

A weather system refers to the movement of warm and cold air across the globe, usually in a recurring pattern. Systems can...

Indicates the amount of water the soil can absorb/retain through percolation. This capacity is around 7% in sandy soil and...

A deviation from the normal or expected value in atmospheric or climatic conditions, often used in meteorology to identify...

A mass of very cold, dry air that mostly originates over the Arctic Ocean.

A continental air mass is a large body of air that forms over land, characterized by dry conditions due to the lack of moisture...

Confluence refers to the area where two or more air streams or bodies of water meet and combine. In meteorology, it often...

A blizzard is a storm that lasts 3 hours or more, with persistent winds/frequent gusts of 35 mph or more along with significant...

Considerable cloudiness refers to weather conditions where a large portion of the sky is covered with clouds, but some clear...