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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 long, narrow region in the atmosphere that transport water vapor, like a river in the sky.

In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...

The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.

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

Cloud condensation nuclei are tiny particles in the atmosphere, such as dust, salt, or pollutants, that provide surfaces...

A distinct layer in a body of water where the temperature changes rapidly with depth, separating warmer surface water from...

A continental air mass is a large body of air that forms over land, characterized by dry conditions due to the lack of moisture...

A tropical cyclone with sustained winds of at least 74 miles per hour, characterized by a central eye, strong winds, and...

Particles such as pollen, grass seeds, or dust in the air that cause allergies and are transported by winds.

A thick cloud of tiny water droplets suspended in the atmosphere near the Earth's surface, significantly reducing visibility.