What is Hail?

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

A deviation from the normal or expected value in atmospheric or climatic conditions, often used in meteorology to identify...

The formation of fog when warm and moist air passes over a cool or cold surface or, conversely, when cold air passes over...

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

A large, organized thunderstorm with a rotating updraft, often producing severe weather such as tornadoes, hail, and heavy...

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

The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.

A distinct layer in a body of water where the temperature changes rapidly with depth, separating warmer surface water from...

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

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