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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 small, intense downdraft that produces damaging winds at the surface, typically lasting a few minutes and often associated...

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

The amount of water vapor present in the air, which can affect comfort levels and weather conditions.

A middle cloud type within the B family in the international cloud classification. These clouds consist of water droplets...

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

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

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

An instrument for measuring atmospheric pressure.

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

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