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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

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

The term used for semi-stationary high-pressure centers such as the Azores and North Pacific Highs, which occur in the narrow...

A large, organized thunderstorm with a rotating updraft, often producing severe weather such as tornadoes, hail, and heavy...

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

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

A small, intense downdraft that produces damaging winds at the surface, typically lasting a few minutes and often associated...

Nor'easter is a meteorological event commonly observed in the Northeastern United States and typically occurs during the...

An image on the weather radar that is convex to the direction of movement and resembles an arc shape, caused by mesoscale...

A periodic cooling of sea surface temperatures in the central and eastern Pacific Ocean, often leading to altered global...

The heating of the Earth by the sun causes daily changes in both the direction and speed of the wind. During the day, ground...