Dark blue cloudy sky

What is Dew Point?

The temperature at which air becomes saturated with moisture and water vapor begins to condense into liquid form, leading to the formation of dew.

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Glossary

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

An image on the weather radar that is convex to the direction of movement and resembles an arc shape, caused by mesoscale...

The horizontal transport of any feature within the atmosphere due to the movement of air (wind). This includes phenomena...

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

Bright and dark rays with changing colors and contrast in the sky. These rays become visible due to the reflection of atmospheric...

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

A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...

A rapidly rotating column of air extending from a thunderstorm to the ground, capable of causing significant damage.

A distinct layer in a body of water where the temperature changes rapidly with depth, separating warmer surface water from...

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