Dark blue cloudy sky

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

The term used for semi-stationary high-pressure centers such as the Azores and North Pacific Highs, which occur in the narrow...

A cloud that develops from Cirrus, completely or partially covering the sky, creating a halo effect, thin, sheet-like, milky...

The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...

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

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

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

A continental air mass is a large body of air that forms over land, characterized by dry conditions due to the lack of moisture...

A periodic cooling of sea surface temperatures in the central and eastern Pacific Ocean, often leading to altered global...

A sudden and rapid flow of snow masses accumulated on the slopes of mountainous areas under the influence of gravity or a...

Frozen drizzle is a dangerous type of frozen rain. It’s a light rain that falls in very fine drops, which freezes on contact...