What is Arctic Air?

A weather front where two air masses meet but neither is strong enough to move the other, often resulting in prolonged periods...

Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.

The amount of radiation, heat, or light passing through or flowing from a unit area of a surface.

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

The amount of water vapor present in the air, which can affect comfort levels and weather conditions.

In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...

The names given to the winds blowing from the four cardinal directions (north, east, south, and west - N, E, S, W) on a compass.

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

A mass of very cold, dry air that mostly originates over the Arctic Ocean.

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