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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

Nor'easter is a meteorological event commonly observed in the Northeastern United States and typically occurs during the...

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

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

Cloud condensation nuclei are tiny particles in the atmosphere, such as dust, salt, or pollutants, that provide surfaces...

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

Confluence refers to the area where two or more air streams or bodies of water meet and combine. In meteorology, it often...

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

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

The formation of ice crystals on surfaces when the temperature drops below freezing, typically overnight, causing potential...

CONQ is a meteorological abbreviation for significant convection observed in a specific area, often indicating unstable atmospheric...