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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

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

Any form of water - liquid or solid - that falls from the atmosphere to the Earth's surface, including rain, snow, sleet,...

The lowest level of a given cloud or cloud layer in the atmosphere, relative to the observer's position above the ground.

A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...

The scientific study of climate, focusing on the analysis of long-term weather patterns and trends over time.

In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...

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

A tropical cyclone with sustained winds of at least 74 miles per hour, characterized by a central eye, strong winds, and...

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