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

An instrument used to measure the speed, force, and sometimes the direction of the wind. It can be cup or pressure tube anemometers....

A weather system refers to the movement of warm and cold air across the globe, usually in a recurring pattern. Systems can...

A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...

The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.

Snow that rises to 8 feet or higher.

Any form of water - liquid or solid - that falls from the atmosphere to the Earth's surface, including rain, snow, sleet,...

Confluence refers to the area where two or more air streams or bodies of water meet and combine. In meteorology, it often...

The state of the atmosphere when it contains the maximum amount of water vapor possible at a given temperature and pressure.

The heating of the Earth by the sun causes daily changes in both the direction and speed of the wind. During the day, ground...

The trapping of heat in the Earth's atmosphere due to greenhouse gases, such as carbon dioxide and methane, which allows...