What is Arctic Air?

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

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

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

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

A measurement determined by the wave lengths and sea conditions caused by the effect of wind, and by the movement of tree...

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

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

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

A periodic warming of sea surface temperatures in the central and eastern Pacific Ocean, significantly influencing global...

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