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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 elongated area of relatively low atmospheric pressure, often associated with unsettled weather conditions like storms...

A cold core high is a high-pressure system with cold air at its center. These systems are typically associated with clear...

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

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 that continuously records atmospheric pressure over time. It uses a barometer to measure pressure and creates...

A term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...

Indicates the amount of water the soil can absorb/retain through percolation. This capacity is around 7% in sandy soil and...

Ball lightning appears during thunderstorms, taking the shape of glowing, electric orbs in the sky. It can appear in a variety...

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

The formation of fog when warm and moist air passes over a cool or cold surface or, conversely, when cold air passes over...