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What is Heat Index?

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

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Glossary

Occurs when centers of high pressure and/or low pressure set up over a region in such a way that they prevent other weather...

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

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

The branch of science dealing with the laws of motion of air or other gases.

A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...

A drainage wind that flows downhill due to gravity, often associated with cold air descending from elevated regions.

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

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

The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.

A type of cloud consisting mostly of small particles such as ice particles.