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What is Weather?

Weather is the day-to-day meteorological conditions that happen in our atmosphere. Weather can change within minutes, which is why it can be difficult to forecast.

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Glossary

A cold core high is a high-pressure system with cold air at its center. These systems are typically associated with clear...

The process by which a solid changes directly into a gas without first becoming a liquid, such as ice turning into water...

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

An elongated area of relatively low atmospheric pressure, often associated with unsettled weather conditions like storms...

The mass of air surrounding the earth and bound to it more or less permanently by the earth's gravitational attraction.

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

The occurrence of storms resulting from the horizontal advection of cold air at high levels or the horizontal advection of...

The state of the atmosphere when it contains the maximum amount of water vapor possible at a given temperature and pressure.

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

Temperature scale, abbreviated as °C, found by accepting the freezing point of water at one atmospheric pressure as zero...