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 measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....

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

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

A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...

A sudden and rapid flow of snow masses accumulated on the slopes of mountainous areas under the influence of gravity or a...

A sudden electrostatic discharge during a thunderstorm between electrically charged regions of a cloud, between clouds, or...

Snow that rises to 8 feet or higher.

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

A long, narrow region in the atmosphere that transport water vapor, like a river in the sky.

Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.