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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 amount of radiation, heat, or light passing through or flowing from a unit area of a surface.

The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...

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

Thermodynamic changes occurring within a system without any exchange of heat with the surroundings. In the atmosphere, changes...

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

Snow that rises to 8 feet or higher.

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

The amount of water vapor present in the air, which can affect comfort levels and weather conditions.

A measurement determined by the wave lengths and sea conditions caused by the effect of wind, and by the movement of tree...

Confluence refers to the area where two or more air streams or bodies of water meet and combine. In meteorology, it often...