What is Arctic High?

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

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

Particles such as pollen, grass seeds, or dust in the air that cause allergies and are transported by winds.

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

A cloud of irregular appearance, composed of irregular cloud fragments.

The horizontal transport of any feature within the atmosphere due to the movement of air (wind). This includes phenomena...

The jet stream forming the boundary between tropical air and sub-tropical air, characterized by isothermal compression and...

The term used for turbulence occurring in the absence of clouds or cloud-like elements in the visible area. It is often observed...

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

Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.