Dark blue cloudy sky

What is Blocking Pattern?

Occurs when centers of high pressure and/or low pressure set up over a region in such a way that they prevent other weather systems from moving through.

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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...

An image on the weather radar that is convex to the direction of movement and resembles an arc shape, caused by mesoscale...

A condition in which the stratification of the atmosphere depends on both air temperature and pressure, and where surfaces...

The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.

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

A measure of how hot it feels when relative humidity is combined with the actual air temperature, often referred to as the...

Bright and dark rays with changing colors and contrast in the sky. These rays become visible due to the reflection of atmospheric...

A thin, white cloud layer that is intertwined or separate, arranged in regular order, and does not cast a shadow.

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

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