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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

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

A deviation from the normal or expected value in atmospheric or climatic conditions, often used in meteorology to identify...

The reflectance rate of a surface, indicating the amount of electromagnetic radiation reflected from the surface. It depends...

The term 'cloudy' refers to weather conditions characterized by a significant amount of cloud cover in the sky. This may...

The expected rate of temperature decrease in an adiabatically rising air parcel when there is no heat exchange with the environment....

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

Air laden with sand and dust, common in areas devoid of permanent vegetation, especially deserts.

The lowest level of a given cloud or cloud layer in the atmosphere, relative to the observer's position above the ground.

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

Ball lightning appears during thunderstorms, taking the shape of glowing, electric orbs in the sky. It can appear in a variety...