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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

A condition in which the stratification of the atmosphere depends on both air temperature and pressure, and where surfaces...

Nor'easter is a meteorological event commonly observed in the Northeastern United States and typically occurs during the...

A sudden electrostatic discharge during a thunderstorm between electrically charged regions of a cloud, between clouds, or...

A low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...

The formation of ice crystals on surfaces when the temperature drops below freezing, typically overnight, causing potential...

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

A line of severe thunderstorms that can form along or ahead of a cold front, often producing strong winds and heavy rain.

A periodic warming of sea surface temperatures in the central and eastern Pacific Ocean, significantly influencing global...

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

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