What is Arctic High?

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

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

A very cold high pressure that originates over the Arctic Ocean.

Condensation pressure deficit refers to the difference between the actual vapor pressure and the saturation vapor pressure...

A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.

The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...

Confluence refers to the area where two or more air streams or bodies of water meet and combine. In meteorology, it often...

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

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

The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.