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

Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...

A closed low, also known as a cut-off low, is a low-pressure system that is entirely isolated from the main atmospheric circulation...

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

In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...

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

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

An anvil is a cloud mostly composed of ice particles. Otherwise known as a cumulonimbus cloud, an anvil has reached the stratospheric...

A strong, downward wind caused by a localized column of air sinking rapidly, often resulting in damage similar to that caused...

A very cold high pressure that originates over the Arctic Ocean.

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