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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

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

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

Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....

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

A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...

The mass of air surrounding the earth and bound to it more or less permanently by the earth's gravitational attraction.

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

A tropical cyclone, also called a hurricane, is a severe tropical storm with wind speeds in excess of 74 mph. Known as a...

A fixed potential temperature line on adiabats, or the process of thermodynamic changes within a system without any exchange...

Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.