Dark blue cloudy sky

What is Ball Lightning?

Ball lightning appears during thunderstorms, taking the shape of glowing, electric orbs in the sky. It can appear in a variety of colors, from blue to orange to yellow, and is sometimes accompanied by a hissing sound and an acrid odor.

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Glossary

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

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

The amount of water vapor present in the air, which can affect comfort levels and weather conditions.

Considerable cloudiness refers to weather conditions where a large portion of the sky is covered with clouds, but some clear...

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

The amount of radiation, heat, or light passing through or flowing from a unit area of a surface.

Anticyclones are areas of high atmospheric pressure that bring hot, dry weather in the summer and cold fronts in the winter.

Convection is the vertical movement of air caused by temperature differences, where warm air rises and cool air sinks. It...

An instrument for measuring atmospheric pressure.

A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...