Dark blue cloudy sky

What is Frost?

The formation of ice crystals on surfaces when the temperature drops below freezing, typically overnight, causing potential damage to plants and crops.

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Glossary

Ball lightning appears during thunderstorms, taking the shape of glowing, electric orbs in the sky. It can appear in a variety...

The term used for semi-stationary high-pressure centers such as the Azores and North Pacific Highs, which occur in the narrow...

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

A line of severe thunderstorms that can form along or ahead of a cold front, often producing strong winds and heavy rain.

The mass of air surrounding the earth and bound to it more or less permanently by the earth's gravitational attraction.

A small, intense downdraft that produces damaging winds at the surface, typically lasting a few minutes and often associated...

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

A type of low-altitude cloud that forms in uniform layers, often covering the entire sky and producing overcast conditions.

A middle cloud type within the B family in the international cloud classification. These are shaded clouds that can be white...

A measure of how hot it feels when relative humidity is combined with the actual air temperature, often referred to as the...