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

A measure of how hot it feels when relative humidity is combined with the actual air temperature, often referred to as the...

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

The situation where there is no advection because the constant pressure surfaces and temperature surfaces in the atmosphere...

Anticyclones are areas of high atmospheric pressure that bring hot, dry weather in the summer and cold fronts in the winter.

The amount of water vapor present in the air, which can affect comfort levels and weather conditions.

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

Condensation pressure deficit refers to the difference between the actual vapor pressure and the saturation vapor pressure...

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

A strong wind typically ranging from 34 to 40 knots (39 to 46 miles per hour) and often associated with rough seas and stormy...