What is Arctic Air?

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

A closed low, also known as a cut-off low, is a low-pressure system that is entirely isolated from the main atmospheric circulation...

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

A periodic cooling of sea surface temperatures in the central and eastern Pacific Ocean, often leading to altered global...

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

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

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

A measure of how hot it feels when relative humidity is combined with the actual air temperature, often referred to as the...

Anticyclones are areas of high atmospheric pressure that bring hot, dry weather in the summer and cold fronts in the winter.

A cold core high is a high-pressure system with cold air at its center. These systems are typically associated with clear...