Dark blue cloudy sky

What is Jet Stream?

Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet cold air masses and impact weather conditions, air travel, and more.

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Glossary

Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.

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

The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.

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

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

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

A low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...

Considerable cloudiness refers to weather conditions where a large portion of the sky is covered with clouds, but some clear...

A tropical cyclone, also called a hurricane, is a severe tropical storm with wind speeds in excess of 74 mph. Known as a...

The large-scale movement of air that distributes heat and moisture around the Earth, influencing weather patterns and climatic...