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

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

Ice forms on the surface of highways in a very thin layer that is difficult to distinguish from the color of the asphalt...

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

A fixed potential temperature line on adiabats, or the process of thermodynamic changes within a system without any exchange...

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

A small, intense downdraft that produces damaging winds at the surface, typically lasting a few minutes and often associated...

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

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

The jet stream forming the boundary between tropical air and sub-tropical air, characterized by isothermal compression and...

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