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What is Warning?

A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening now, developing as we speak, and is minutes away. This weather hazard poses a threat to life and property.

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Glossary

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

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

A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.

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

Although it is also used for light winds, it is the general name given to the daily cyclical winds that occur mostly between...

A strong, downward wind caused by a localized column of air sinking rapidly, often resulting in damage similar to that caused...

An instrument used to measure the speed, force, and sometimes the direction of the wind. It can be cup or pressure tube anemometers....

Bright and dark rays with changing colors and contrast in the sky. These rays become visible due to the reflection of atmospheric...

Frozen drizzle is a dangerous type of frozen rain. It’s a light rain that falls in very fine drops, which freezes on contact...

A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...