What is Arctic Air?

The term 'cloudy' refers to weather conditions characterized by a significant amount of cloud cover in the sky. This may...

A sudden electrostatic discharge during a thunderstorm between electrically charged regions of a cloud, between clouds, or...

The occurrence of storms resulting from the horizontal advection of cold air at high levels or the horizontal advection of...

Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...

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

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

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

An instrument for measuring atmospheric pressure.

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

Local winds that blow from slopes to peaks as a result of the heating of the top slopes without being affected by general...