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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 situation where there is no advection because the constant pressure surfaces and temperature surfaces in the atmosphere...

A closed low, also known as a cut-off low, is a low-pressure system that is entirely isolated from the main atmospheric circulation...

Anticyclones are areas of high atmospheric pressure that bring hot, dry weather in the summer and cold fronts in the winter.

A strong wind typically ranging from 34 to 40 knots (39 to 46 miles per hour) and often associated with rough seas and stormy...

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

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

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

The term used for semi-stationary high-pressure centers such as the Azores and North Pacific Highs, which occur in the narrow...

A storm characterized by the presence of lightning and its acoustic effect on the Earth's atmosphere known as thunder.

A cloud of irregular appearance, composed of irregular cloud fragments.