Dark blue cloudy sky

What is Bow Echo?

An image on the weather radar that is convex to the direction of movement and resembles an arc shape, caused by mesoscale convective movements along a strong thunderstorm line.

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Glossary

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

A strong wind typically ranging from 34 to 40 knots (39 to 46 miles per hour) and often associated with rough seas and stormy...

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

The reflectance rate of a surface, indicating the amount of electromagnetic radiation reflected from the surface. It depends...

A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...

A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...

A cold core high is a high-pressure system with cold air at its center. These systems are typically associated with clear...

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

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