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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...

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

A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...

Any form of water - liquid or solid - that falls from the atmosphere to the Earth's surface, including rain, snow, sleet,...

Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...

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

The horizontal transport of any feature within the atmosphere due to the movement of air (wind). This includes phenomena...

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

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

Weather is the day-to-day meteorological conditions that happen in our atmosphere. Weather can change within minutes, which...