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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

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

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

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

A cold core low is a low-pressure system where the coldest temperatures are found near the center. These systems are often...

A drainage wind that flows downhill due to gravity, often associated with cold air descending from elevated regions.

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

A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.

The trapping of heat in the Earth's atmosphere due to greenhouse gases, such as carbon dioxide and methane, which allows...

Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds...

The state of the atmosphere when it contains the maximum amount of water vapor possible at a given temperature and pressure.