Dark blue cloudy sky

What is Atmospheric River?

A long, narrow region in the atmosphere that transport water vapor, like a river in the sky.

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Glossary

A thin, white cloud layer that is intertwined or separate, arranged in regular order, and does not cast a shadow.

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

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

The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....

A cloud of irregular appearance, composed of irregular cloud fragments.

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

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

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

A sudden electrostatic discharge during a thunderstorm between electrically charged regions of a cloud, between clouds, or...

A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...