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

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

An anvil is a cloud mostly composed of ice particles. Otherwise known as a cumulonimbus cloud, an anvil has reached the stratospheric...

The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.

A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...

A thermodynamic change process in the system without any exchange of heat or transfer of energy between systems. This process...

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

A term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...

A large body of air having similar horizontal temperature and moisture characteristics.

A weather front formed when a cold front overtakes a warm front, lifting the warm air off the ground and resulting in a mix...