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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 scientific study of climate, focusing on the analysis of long-term weather patterns and trends over time.

The temperature at which air becomes saturated with moisture and water vapor begins to condense into liquid form, leading...

A closed low, also known as a cut-off low, is a low-pressure system that is entirely isolated from the main atmospheric circulation...

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

An anvil is a cloud mostly composed of ice particles. Otherwise known as a cumulonimbus cloud, an anvil has reached the stratospheric...

The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.

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

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

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 long, narrow region in the atmosphere that transport water vapor, like a river in the sky.